The imine reductase AoIRED from Amycolatopsis orientalis (Uniprot R4SNK4) catalyzes the NADPH-dependent reduction of a wide range of prochiral imines and iminium ions, predominantly with (S)-selectivity and with ee’s of up to >99%. AoIRED displays up to 100-fold greater catalytic efficiency for 2-methyl-1-pyrroline (2MPN) compared to other IREDs, …Dry reforming of methane (DRM) can convert greenhouse gases (CO2 and CH4) into value-added syngas (CO and H2), which is one of the promising approaches to achieve carbon neutrality. Designing coking resistant catalysts is still a challenge for an efficient DRM reaction. Here, we developed an efficient binary Mo–Ni catalyst through elucidating the promotional role of Mo in boosting the coking ... ACS Catalysis is a monthly peer-reviewed scientific journal established in 2011 by the American Chemical Society. The journal covers research on all aspects of …Low-temperature dry reforming of methane (DRM) can avoid the sintering of nickel and reduce the cost of the process. However, inefficient activation of CO2 and oxidization of Ni0 hamper the catalytic performance of Ni-based catalysts at low temperatures. Herein, a Ni/ZrO2 catalyst was prepared and used in the DRM reaction, …Photocatalytic CO2 reduction is an ideal strategy to reduce greenhouse effects and realize carbon neutralization. Constructing active sites with specific designs is highly desired and challenging to achieve with high activity and selectivity of photoreduction. Herein, our studies find that a series of Bi-based materials with different compositions, …When Pt10 clusters on an iron oxide surface are heated, they first become covered in lattice oxygen and are subsequently encapsulated by an iron oxide conglomerate. Surprisingly, even the encapsulated clusters are mobile and thus undergo sintering into small, immobile nanoparticles. The authors would like to acknowledge the …Ni is the one of most efficient active sites for triggering urea electrooxidation (UOR); however, ’it is hard to achieve higher activity and stability with only the Ni site. To address issues such as dehydrogenation, C–N bond breakage, and catalyst poisoning caused by carbonaceous fragments simultaneously, manipulating a pathway via building …ACS Catalysis focuses on original research into heterogeneous catalysis, molecular catalysis, and biocatalysis – taking in a wide range of disciplines from the life sciences and organometallics to photochemistry and electrochemistry, drug discovery, materials science, environmental protection, polymers, and energy and fuels. For Librarians & Account Managers. ACS & Open Access. Matthew J. McKay. [email protected] Having access to mild and operationally simple techniques for attaining carbohydrate targets will be necessary to facilitate advancement in biological, medicinal, and pharmacological research. Even with the abundance of elegant reports for generating ...Seawater electrolysis is an attractive approach for producing clean hydrogen fuel in scenarios where freshwater is scarce and renewable electricity is abundant. However, chloride ions (Cl–) in seawater can accelerate electrode corrosion and participate in the undesirable chlorine evolution reaction (CER). This problem is especially acute in acidic …Nature Catalysis - Multiple ... van der Hoeven, J. E. S. et al. Entropic control of HD exchange rates over dilute Pd-in-Au alloy nanoparticle catalysts. ACS Catal. 11, …The imine reductase AoIRED from Amycolatopsis orientalis (Uniprot R4SNK4) catalyzes the NADPH-dependent reduction of a wide range of prochiral imines and iminium ions, predominantly with (S)-selectivity and with ee’s of up to >99%. AoIRED displays up to 100-fold greater catalytic efficiency for 2-methyl-1-pyrroline (2MPN) compared to other IREDs, …Ohio Electric Motors indicates that the main difference between AC and DC motors is the power source. AC motors are powered by an alternating current while DC motors use a direct c...Fischer-Tropsch synthesis (FTS) provides a nonpetroleum route for the production of value-added α-olefins from syngas. However, regulating the product distribution to promote the formation of long-chain α-olefins while maintaining low selectivity to C1 byproducts (CO2 and CH4) remains a great challenge. Herein, a series of alkali …The electrochemical urea oxidation reaction (UOR) on Ni has recently attracted much attention as part of the global effort to produce hydrogen from waste. Fe addition to Ni (hydro)oxides results in a significant enhancement of the rate of the oxygen evolution reaction (OER), and a similar role of Fe in the UOR has often been claimed. In …Glycosyltransferases (GTs) catalyze the formation of glycosidic bonds in carbohydrates and glycoconjugates, with various outcomes depending not only on the acceptor molecules they bind but also on the type of glycosidic bond they form (C–O, C–N, C–S, or C–C). Here we show that the glucosyltransferase UGT1 from the indigo plant …In this Review, we present the recent progress in ARA featuring diverse carbonyl and amine partners employing transition metal-catalysts. This Review provides an organized and critical discussion on catalyst engineering and evolution, expanding susbstrate scope and mechanistic insights.The design of electrocatalysts capable of selectively reducing nitrate to ammonia is gaining interest as a means of transforming waste into fertilizers. However, most prior investigations of prototypical electrocatalysts, such as polycrystalline Pd and Pt, have focused on unraveling the mechanisms responsible for the selective reduction of nitrate to nitrogen …Developing a cost-effective and highly efficient electrocatalyst with superior catalytic activity is crucial for clean and green water splitting, including the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER), and the oxygen reduction reaction (ORR). The single-atom catalyst (SAC) is a breakthrough in industrial catalysis …We report here selective reduction of CO to acetate using Cu–Pd bimetallic electrocatalysts. High activity and selectivity are demonstrated for CO-to-acetate conversion with >200 mA/cm 2 in geometric current density and >65% in Faradaic efficiency (FE). An asymmetrical C–C coupling mechanism is proposed to explain the composition …Formation and evolution of active hydrogen species from H2 on a metal oxide is of great importance in many hydrogenation reactions, while understanding the nature of surface hydrogen species remains a great challenge. Herein, high-vacuum-based transmission infrared spectroscopy coupled with temperature-programmed desorption …Taking 50 years of effort, ambient pressure X-ray photoelectron spectroscopy (APXPS) has become a useful characterization tool for studies in heterogeneous catalysis and electrocatalysis. This achievement is realized not by mere improvement of instrumentation but through interactions between the desire to explore new scientific …This article describes the discovery and development of a palladium-catalyzed asymmetric C–H olefination of 2-hydroxybiaryls. The strategy allows a direct assembly of optically active, axially chiral 2-substituted-2′-hydroxybiaryls from readily available precursors and demonstrates that the native hydroxy unit of the substrates can work as an efficient …Enzymatic catalysis is a complex process that can involve multiple conformations of the enzyme:substrate complex and several competitive reaction pathways, resulting in a multi-dimensional free energy landscape. The study of enzymatic activity often requires deep knowledge of the system to establish the catalytic mechanism and identify …It remains challenging to achieve nanoparticles with uniform size and dispersion or single atoms with identical coordination structure, although various methods have been developed to synthesize carbon-supported nanostructured catalysts. Typically, in the synthesis of vinyl chloride (VCM) by acetylene hydrochlorination, a limited …Read research published in the ACS Catalysis Vol. 13 Issue 22 on ACS Publications, a trusted source for peer-reviewed journals.When it comes to cooling your home, there are several options available in the market. Two of the most popular types of air conditioners are portable ACs and window ACs. In this ar...Bimetallic Au–Pd alloy nanoparticles (NPs) dispersed on nanohybrid three-dimensionally ordered macroporous (3DOM) La0.6Sr0.4MnO3 (LSMO) perovskite catalysts were fabricated via the l-lysine-mediated colloidal crystal-templating and reduction routes. The obtained AuPd/3DOM LSMO samples possess a nanovoid-like 3DOM construction with …Self-assembly of short de novo designed peptides gives rise to catalytic amyloids capable of facilitating multiple chemical transformations. We show that catalytic amyloids can efficiently hydrolyze paraoxon, which is a widely used, highly toxic organophosphate pesticide. Moreover, these robust and inexpensive metal-containing materials can be easily …When you purchase a Goodman air conditioner, you want to make sure that you are covered in the event of an issue. One way to do this is by registering your Goodman AC warranty. Thi...ACS Catalysis (2015), 5 (2), 1283-1302 CODEN: ACCACS; ISSN: 2155-5435. (American Chemical Society) A review. The chem. of nickel N-heterocyclic carbene complexes is a research area that has blossomed over the last 10 years, and a large no. of new complexes with a variety of architectural motifs are now known.ACS Catalysis (2021), 11 (3), 1242-1247 CODEN: ACCACS; ISSN: 2155-5435. ( American Chemical Society ) The manipulation of photoelectrodes' electron-hole pairs toward low recombination is the fundamental strategy to achieve high solar-to-hydrogen conversion efficiency in photoelectrochem. Published by American Chemical Society. Enzymatic degradation of polyethylene terephthlate (PET) by polyester hydrolases is currently subject to intensive research, as it is considered as a potential eco-friendly recycling method for plastic waste. However, the substrate-binding mode and the molecular mechanism of enzymatic PET hydrolysis are ...Jan 29, 2021 · Synergistic effects have been discussed extensively in bimetallic heterogeneous catalysis, but it remains unclear how the effects function at the atomic scale. Here, we report a dual single-atom catalyst (DSAC) Ir1Mo1/TiO2 displaying much greater catalytic chemoselectivity (>96%, at 100% conversion) than comparable single-atom catalysts (SACs) Ir1/TiO2 (38%, at 87% conversion) and Mo1/TiO2 (no ... ACS Catalysis 2024, Article ASAP. Di Chao, Tong-Xin Liu, Pengling Zhang, Shilu Xia, Panting Yang, Mengjiao Huang, Qingfeng Liu, Guisheng Zhang. Interrupted N-Heterocyclic Carbene-Catalyzed Radical Coupling Strategy: A Versatile Platform for Alkylation and Arylation of [60]Fullerene.An efficient method for the construction of 12-membered heterocycles with a trifluoromethyl group (3) was achieved via a nondecarboxylative Pd-catalyzed [6 + 6] annulation of six-membered trifluoromethyl benzo[d][1,3]oxazinones (1) with four-membered vinyl oxetanes (2). A variety of relatively large heterocycles 3 featuring a stereogenic …In this Perspective article, we review different strategies in multicatalysis that bring distinct challenges and opportunities. We divide this overarching field into three main categories: cooperative, domino, and relay catalysis. Each category is described along with representative examples to highlight its features.21 Sept 2021 ... ACS Science Talks features a series of lectures by many researchers in different diverse fields of chemistry from around the world.Jul 18, 2022 · Plastic waste triggers a series of concerns because of its disruptive impact on the environment and ecosystem. From the point of view of catalysis, however, end-of-life plastics can be seen as an untapped feedstock for the preparation of value-added products. Thus, the development of diversified catalytic approaches for plastics valorization is urgent. Previous reviews of this field have ... That reaction requires two steps with a palladium catalyst (J. Org. Chem. 2021, DOI: 10.1021/acs.joc.1c01073). Chirik’s group has also published studies in …ACS Catalysis, ACS Central Science, ACS Chemical Biology, ACS Chemical Health ... Catalysts for Autothermal Cracking of n-Hexane.” Load More. ‹ All Videos.Herein, we describe the design and development a new nickel pincer complex that catalyzes the direct coupling of primary alkyl halides with terminal alkynes at ...Bimetallic Au–Pd alloy nanoparticles (NPs) dispersed on nanohybrid three-dimensionally ordered macroporous (3DOM) La0.6Sr0.4MnO3 (LSMO) perovskite catalysts were fabricated via the l-lysine-mediated colloidal crystal-templating and reduction routes. The obtained AuPd/3DOM LSMO samples possess a nanovoid-like 3DOM construction with …For Librarians & Account Managers. ACS & Open Access. Matthew J. McKay. [email protected] Having access to mild and operationally simple techniques for attaining carbohydrate targets will be necessary to facilitate advancement in biological, medicinal, and pharmacological research. Even with the abundance of elegant reports for generating ... Ni is the one of most efficient active sites for triggering urea electrooxidation (UOR); however, ’it is hard to achieve higher activity and stability with only the Ni site. To address issues such as dehydrogenation, C–N bond breakage, and catalyst poisoning caused by carbonaceous fragments simultaneously, manipulating a pathway via building …Here, we proposed a computation-driven strategy to optimize structures of enzymes via simulation-based iterative saturation mutagenesis (ISM), aiming to stabilize the spatial effects of the TS with a TSA as a placeholder. This approach was applied to redesign structures of chitinase in order to increase its catalytic activity. After three ...ACS Catalysis focuses on original research into heterogeneous catalysis, molecular catalysis, and biocatalysis – taking in a wide range of disciplines from the life sciences and organometallics to photochemistry and electrochemistry, drug discovery, materials science, environmental protection, polymers, and energy and fuels. ACS Catalysis (2016), 6 (12), 8239-8247 CODEN: ACCACS; ISSN: 2155-5435. (American Chemical Society) The electrochem. redn. of carbon dioxide (CO2) to ethanol (C2H5OH) and ethylene (C2H4) using renewable electricity is a viable method for the prodn. of these com. vital chems. Copper (Cu) and its oxides are by far the most effective ...8 Aug 2016 ... Research from PhD candidate Garrett Chado and Professors Mark Stoykovich and Joel Kaar has been highlighted on the August 2016 cover of ACS ...May 2, 2022 · ACS Catalysis (2021), 11 (14), 8929-8941 CODEN: ACCACS; ISSN: 2155-5435. ( American Chemical Society ) Developing a cost-effective and highly efficient electrocatalyst with superior catalytic activity is crucial for clean and green water splitting, including the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER), and the ... Call for Papers: Sustainable Catalysis. Martin Sugden. Jan 12, 2024. 2 min read. Read the latest stories around cutting-edge chemistry published in ACS …A Virtual Issue focused on “Blurring the Lines Between Catalysis Subdisciplines.” ACS Catalysis continues to strive for topical breadth across …Abstract. Transition metals can assemble to form multinuclear complexes by engaging in direct metal-to-metal interactions. Metal–metal covalent bonds provide a large perturbation in electronic structure, relative to mononuclear metal ions, and the unique properties of these dinuclear fragments can be harnessed in a broad range of …In this Perspective article, we review different strategies in multicatalysis that bring distinct challenges and opportunities. We divide this overarching field into three main categories: cooperative, domino, and relay catalysis. Each category is described along with representative examples to highlight its features.Read research published in the ACS Catalysis Vol. 13 Issue 6 on ACS Publications, a trusted source for peer-reviewed journals. Whether you’re good at taking tests or not, they’re a part of the academic life at almost every level, from elementary school through graduate school. Fortunately, there are some t...Jun 3, 2021 · Metal–organic frameworks (MOFs) as electrocatalysts for oxygen evolution reaction (OER) typically suffer from fast degradation under harsh electrolyte conditions, impeding their practical use in industrial electrolyzers. Besides, the evolution of catalytic centers in MOFs and the related influence on their performance along the progress of reaction have rarely been studied. Here, we report a ... Mar 25, 2022 · ACS Catalysis (2017), 7 (5), 3540-3547 CODEN: ACCACS; ISSN: 2155-5435. ( American Chemical Society ) Developing highly efficient and affordable noble-metal-free catalysts toward the hydrogen evolution reaction (HER) is an important step toward the economical prodn. of hydrogen. Bimetallic Au–Pd alloy nanoparticles (NPs) dispersed on nanohybrid three-dimensionally ordered macroporous (3DOM) La0.6Sr0.4MnO3 (LSMO) perovskite catalysts were fabricated via the l-lysine-mediated colloidal crystal-templating and reduction routes. The obtained AuPd/3DOM LSMO samples possess a nanovoid-like 3DOM construction with …Professor Mary P. Watson from the University of Delaware is the 2023 ACS Catalysis Lectureship winner for her innovative and impactful contributions to …Don't fear your next interview—conquer it. This post originally appeared at LinkedIn. Follow the author here. Most people’s biggest job-hunting fear is being put on the spot by odd...Mar 25, 2020 · We herein report the fabrication of a bifunctional iron nanocomposite catalyst, in which two catalytically active sites of Fe–Nx and Fe phosphate, as oxidation and Lewis acid sites, were simultaneously integrated into a hierarchical N,P-dual doped porous carbon. As a bifunctional catalyst, it exhibited high efficiency for direct oxidative cleavage of alkenes into ketones or their oxidation ... University of California Santa Barbara. United States. E-mail: [email protected]. Journal Scope. ACS Catalysis is dedicated to publishing original research on heterogeneous catalysis, molecular catalysis, and biocatalysis.Wide-ranging coverage includes life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. To highlight some of the many contributions that helped to catapult ACS Catalysis to becoming one of the premier catalysis journals, we have overviewed …This article describes the discovery and development of a palladium-catalyzed asymmetric C–H olefination of 2-hydroxybiaryls. The strategy allows a direct assembly of optically active, axially chiral 2-substituted-2′-hydroxybiaryls from readily available precursors and demonstrates that the native hydroxy unit of the substrates can work as an efficient directing group for the C–H ... Published by American Chemical Society. Enzymatic degradation of polyethylene terephthlate (PET) by polyester hydrolases is currently subject to intensive research, as it is considered as a potential eco-friendly recycling method for plastic waste. However, the substrate-binding mode and the molecular mechanism of enzymatic PET hydrolysis are ...15 Jun 2021 ... Raffaella becomes an Associate Editor in ACS Catalysis! ... Raffaella joins the editorial team of ACS Catalysis. Raffaella will handle manuscripts ...ACS Catalysis is a monthly peer-reviewed scientific journal established in 2011 by the American Chemical Society. The journal covers research on all aspects of heterogeneous, homogeneous, and biocatalysis. The editor-in-chief is Cathleen Crudden, who assumed the position in early 2021. May 11, 2022 · Formation and evolution of active hydrogen species from H2 on a metal oxide is of great importance in many hydrogenation reactions, while understanding the nature of surface hydrogen species remains a great challenge. Herein, high-vacuum-based transmission infrared spectroscopy coupled with temperature-programmed desorption has been applied to study surface hydrogen species over ZnO and ZnCrOx ... Chiral oxazolidinones are a class of important heterocyclic compounds in pharmaceutical chemistry due to their biological activity. Halohydrin dehalogenase-catalyzed epoxide ring-opening reaction with cyanate offers an attractive approach to the synthesis of chiral oxazolidinones, but the α/β-regioselectivity and stereoselectivity are …Jul 10, 2022 · Herein, we report a photoexcited base-metal-catalyzed selective desaturation of aliphatic amides and imides. The reaction is catalyzed by a base-metal cobalt complex under visible-light irradiation. This transformation can be efficiently processed at room temperature and enables the synthesis of valuable cyclic and acyclic enamides and enimides from abundant chemicals. Density functional ... Ni is the one of most efficient active sites for triggering urea electrooxidation (UOR); however, ’it is hard to achieve higher activity and stability with only the Ni site. To address issues such as dehydrogenation, C–N bond breakage, and catalyst poisoning caused by carbonaceous fragments simultaneously, manipulating a pathway via building …Copper-Catalyzed Synthesis of Masked (Hetero)Aryl Sulfinates. Stereoselective Synthesis of Either. 1155 Sixteenth Street N.W. About ACS Publications. ACS & Open Access. ACS Publications Blog. Journals A-Z. ACS Publishing Center. 2024-02-15T07:54:50.884-08:00.The electrochemical urea oxidation reaction (UOR) on Ni has recently attracted much attention as part of the global effort to produce hydrogen from waste. Fe addition to Ni (hydro)oxides results in a significant enhancement of the rate of the oxygen evolution reaction (OER), and a similar role of Fe in the UOR has often been claimed. In …Anionic ligands containing a nonbonded lone pair (i.e., amido, thiolate) are well-known to cooperate with a metal center in bifunctional catalytic reactions. An NHC CoII(κ3-SNS) imine–dithiolate complex (Co-3) effects the selective hydroboration of aldehydes (vs ketones) in 4–30 min at a 1 mol % loading in benzene (NHC = 2,5 …ACS Catalysis Highlights Its Most Cited Papers from Around the Globe: Italy and Switzerland Christopher W. Jones ACS Catalysis 2020, 10, 5, 3514-3515 (Editorial) …CO hydrogenation to isobutyl alcohol is a promising route for CO transformation to high value-added products. However, the formation mechanism of isobutyl alcohol is complex, and its synthesis requires complex catalysts and harsh reaction conditions, which hinders the identification of active sites. 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It remains challenging to achieve nanoparticles with uniform size and dispersion or single atoms with identical coordination structure, although various methods have been developed to synthesize carbon-supported nanostructured catalysts. Typically, in the synthesis of vinyl chloride (VCM) by acetylene hydrochlorination, a limited …. Verizon outrage
florida mugshots orange countyMar 7, 2023 · Fischer-Tropsch synthesis (FTS) provides a nonpetroleum route for the production of value-added α-olefins from syngas. However, regulating the product distribution to promote the formation of long-chain α-olefins while maintaining low selectivity to C1 byproducts (CO2 and CH4) remains a great challenge. Herein, a series of alkali metal-promoted Ru/SiO2 catalysts were synthesized to ... Electrochemical conversion of industrial nitrate wastewater to valuable ammonia (NH3) is an attractive method for nitrate removal and NH3 production. However, the energy efficiency is limited by the high reaction overpotential and poor selectivity. Herein, we demonstrate a tandem electrode composed of hierarchical Cu nanowires shelled with …Metal-catalyzed cross-coupling reactions are extensively employed in both academia and industry for the synthesis of biaryl derivatives for applications to both medicine and material science. Application of these methods to prepare tetra-ortho-substituted biaryls leads to chiral atropisomeric products that introduce the opportunity to use catalyst control to …ConspectusThe hydrogenative conversion of both CO and CO2 into high-value multicarbon (C2+) compounds, such as olefins, aromatic hydrocarbons, ethanol, …A general iron-catalyzed methylation has been developed using methanol as a C1 building block. This borrowing hydrogen approach employs a Knölker-type (cyclopentadienone)iron carbonyl complex as catalyst (2 mol %) and exhibits a broad reaction scope. A variety of ketones, indoles, oxindoles, amines, and sulfonamides undergo mono- or dimethylation …graminicola as a representative member of a large uncharacterized subgroup of AA5_2. Through recombinant production and detailed kinetic analysis, we ...Climate change has prompted scientists to search for possible ways of reducing CO2 emissions or even capturing it from the atmosphere. Catalytic reduction of CO2 into value-added chemicals has been put forward as a viable strategy. While thermocatalytic routes of producing CO, methanol, methane, and higher hydrocarbons …Light olefin selectivity reaches as high as 81.6% with CO conversion 35.5% at Si/Al ratio = 0.011. A higher Si/Al ratio gives a stronger acid strength and higher acid density, which leads to a reduced ratio of olefins/paraffins (O/P) and an increased C 3 /C 2 ratio in the products. This could be attributed to the enhanced secondary reactions of ...Key similarities and differences of Pd and Ni in catalytic systems are discussed. Overall, Ni and Pd catalyze a vast number of similar C–C and C–heteroatom bond-forming reactions. However, the smaller atomic radius and lower electronegativity of Ni, as well as the more negative redox potentials of low-valent Ni species, often provide …Choosing the right air conditioning unit is extremely important, especially if you live in an area that gets really hot during the summer months or if it’s hot all year round. The ...Aug 5, 2022 · Metal–organic frameworks (MOFs) and coordination polymers (CPs) are potential candidates for high-performance photocatalysts because of their high tunability of electronic and structural properties. For example, MOFs and CPs having a high specific surface area (∼1000 m2 g–1) have been applied as visible-light-driven photocatalysts for CO2 reduction and water splitting. Herein, we show a ... 21 Sept 2021 ... ACS Science Talks features a series of lectures by many researchers in different diverse fields of chemistry from around the world.If you're visiting Palma, Mallorca, you'll want to check out this AC Hotel property for its prime location, good service, and great value. We may be compensated when you click on p...Herein, we report a photoexcited base-metal-catalyzed selective desaturation of aliphatic amides and imides. The reaction is catalyzed by a base-metal cobalt complex under visible-light irradiation. This transformation can be efficiently processed at room temperature and enables the synthesis of valuable cyclic and acyclic enamides and …Perspectives in ACS Catalysis bring you a critical assessment of developing and established fields of research. Reviews in ACS Catalysis are comprehensive, …Mar 7, 2023 · Fischer-Tropsch synthesis (FTS) provides a nonpetroleum route for the production of value-added α-olefins from syngas. However, regulating the product distribution to promote the formation of long-chain α-olefins while maintaining low selectivity to C1 byproducts (CO2 and CH4) remains a great challenge. Herein, a series of alkali metal-promoted Ru/SiO2 catalysts were synthesized to ... Aug 5, 2022 · Here, we proposed a computation-driven strategy to optimize structures of enzymes via simulation-based iterative saturation mutagenesis (ISM), aiming to stabilize the spatial effects of the TS with a TSA as a placeholder. This approach was applied to redesign structures of chitinase in order to increase its catalytic activity. After three ... Aug 1, 2022 · Electrochemical reduction of CO2 to produce fuels and chemicals is one of the most valuable approaches to achieve a carbon-neutral cycle. Recently, a diversity of catalysts have been developed to improve their intrinsic activity and efficiency. However, the dynamic evolution process and the in situ construction behavior of electrocatalysts under the working conditions are typically ignored ... It results in impressive bifunctional catalytic activities for both HER and OER and consequently enables a highly efficient water electrolyzer with a current ...8 Aug 2016 ... Research from PhD candidate Garrett Chado and Professors Mark Stoykovich and Joel Kaar has been highlighted on the August 2016 cover of ACS ...Associate Editor Jingguang Chen elected to NAE. Congratulations to ACS Catalysis Associate Editor, Professor Jingguang Chen (Columbia University), for his 2024 election to the National Academy of Engineering for discovering new catalysts and synchrotron techniques to connect catalytic and electrocatalytic mechanisms under reaction conditions. Dec 3, 2021 · Progress and Opportunities in Photochemical Enzymology of Oxidoreductases. Brandon L. Greene *. ACS Catalysis 2021, 11, 23, 14635-14650 (Perspective) Publication Date (Web): November 19, 2021. Abstract. Anionic ligands containing a nonbonded lone pair (i.e., amido, thiolate) are well-known to cooperate with a metal center in bifunctional catalytic reactions. An NHC CoII(κ3-SNS) imine–dithiolate complex (Co-3) effects the selective hydroboration of aldehydes (vs ketones) in 4–30 min at a 1 mol % loading in benzene (NHC = 2,5 …CO2 hydrogenation over Fe-based catalysts is a promising pathway to mitigate emissions of this greenhouse gas and provides a possibility for crude-oil-free production of chemicals and fuels. Understanding of (i) the role of crystalline phases or/and surface species in the working catalysts, (ii) the factors affecting their formation under …Selective oxidation of H2S to sulfur is an efficient process for industrial applications and environmental requirement to reduce the residual H2S in the Claus technology to an ultralow content (<0.1 ppm) before releasing the off-gas into the atmosphere. Recently, numerous research studies have been devoted to the development of highly active, selective and …Developing efficient noble-metal-free catalysts for the electrochemical N2 reduction reaction (NRR) under ambient conditions shows promise in fertilizer production and hydrogen storage. Here, as a proof-of-concept prototype, we design and implement an Fe–N/C–carbon nanotube (CNT) catalyst derived from a metal–organic framework and …The synthesis of steroid drugs by multistage modifications of the steroidal core is challenging since site-specific and selective modification is essentially required, which is often difficult or complicated for chemocatalysis. For example, the synthesis of Trenbolone (3), a versatile anabolic–androgenic steroid, relies on a four-step chemical …Self-assembly of short de novo designed peptides gives rise to catalytic amyloids capable of facilitating multiple chemical transformations. We show that catalytic amyloids can efficiently hydrolyze paraoxon, which is a widely used, highly toxic organophosphate pesticide. Moreover, these robust and inexpensive metal-containing materials can be easily …DC current is direct current, which means electricity only flows in one direction; AC current is alternating current, which means it flows in both directions. Batteries run on DC c...Fischer-Tropsch synthesis (FTS) provides a nonpetroleum route for the production of value-added α-olefins from syngas. However, regulating the product distribution to promote the formation of long-chain α-olefins while maintaining low selectivity to C1 byproducts (CO2 and CH4) remains a great challenge. Herein, a series of alkali …If you're visiting Palma, Mallorca, you'll want to check out this AC Hotel property for its prime location, good service, and great value. We may be compensated when you click on p...Converting renewable biomass into value-added chemicals is a promising strategy to reduce the dependence on fossil fuels. The development of efficient, stable, and cost-effective nonprecious metal catalytic materials is significant for biomass upgrading. Herein, the 5-hydroxymethylfurfural (HMF) dehydrogenation kinetics on the NiCo2 nanowire is tuned …Included among the many challenges regarding renewable energy technology are improved electrocatalysts for the oxygen evolution reaction (OER). In this study, we report a novel bifunctional electrocatalyst based on a highly dense CoOx catalyst by introducing CeOx. The CoOx catalyst is fabricated by two-step electrodeposition, …Herein, we have highlighted the role of DCC-driven stable porous cages as catalysts where catalysis occurs via the activation of the encapsulated substrates. As a result, in many cases these hosts result in better yields and stereoselectivity compared to conventional reactions without cages. This perspective presents the use of dynamic …However, their utilization in synthetic photocatalysis, especially in the direct functionalization of C (sp 3 )–H bonds, remains underexplored. Herein, we report mesoporous graphitic carbon nitride (mpg-CN) as a heterogeneous organic semiconductor photocatalyst for direct arylation of C (sp 3 )–H bonds in combination with nickel catalysis.The rational design of high-performance electrocatalysts requires a detailed understanding of dynamic changes in catalyst properties, including oxidation states, surface area, and morphology under realistic working conditions. Oxide-derived Cu catalysts exhibit a remarkable selectivity toward multicarbon products for the electrochemical CO …The covalent organic framework COFbpyMn imposes mechanical constraints on the catalytically active centers, preventing the formation of Mn dimeric species, which results in a catalytic enhancement regarding the molecular counterpart. This study supports the importance of well-defined single-atom catalysis and the rational design of catalytic reticular materials. View the article. Hydrogen bond-based organocatalysts rely on networks of attractive noncovalent interactions (NCIs) to impart enantioselectivity. As a specific example, aryl pyrrolidine substituted urea, thiourea, and …Aug 1, 2022 · Electrochemical reduction of CO2 to produce fuels and chemicals is one of the most valuable approaches to achieve a carbon-neutral cycle. Recently, a diversity of catalysts have been developed to improve their intrinsic activity and efficiency. However, the dynamic evolution process and the in situ construction behavior of electrocatalysts under the working conditions are typically ignored ... graminicola as a representative member of a large uncharacterized subgroup of AA5_2. Through recombinant production and detailed kinetic analysis, we ...Covalent Attachment of Cobalt Bis (Benzylaminedithiolate) to Reduced Graphene Oxide as a Thin-Film Electrocatalyst for Hydrogen Production with Remarkable Dioxygen Tolerance. Virginia A. Larson. and. Nicolai …ACS Catal. Website Demos & Tutorials. For Librarians & Account Managers. , and. , , and. 2024-02-11T07:44:30.911-08:00. Read the latest ASAP articles from the ACS Catalysis on ACS Publications, a trusted source for peer-reviewed journals.Artificial enzymes, usually created by incorporating one or two abiological catalytic species into protein hosts, are becoming promising tools for biocatalysis. However, they are still far behind natural enzymes due to their limited active sites with low activity and selectivity. Here, we proposed a polymeric approach to generate artificial enzymes by …Are you preparing for the RSCIT exam? Want to boost your chances of success on the online test? Look no further. In this article, we will provide you with some valuable tips and tr...Further oxidation of the complex forms {Ru V (O) (t5a-κ-N 2 O) (py) 2 } ( 2V (O) (κ-N 2 O)), which is a very efficient water oxidation catalyst, reaching a TOF MAX value of 9400 s –1 at pH 7.0, as measured via foot of the wave analysis. The key to fast kinetics for the catalytic oxidation of water to dioxygen by 2V (O) (κ-N 2 O) is due not ...CO2 hydrogenation over Fe-based catalysts is a promising pathway to mitigate emissions of this greenhouse gas and provides a possibility for crude-oil-free production of chemicals and fuels. Understanding of (i) the role of crystalline phases or/and surface species in the working catalysts, (ii) the factors affecting their formation under …Alternating current generators, typically referred to as AC generators, generally work on the same principle as direct current generators.The basic function of a generator is to co...The most promising approach to mitigating the greenhouse effect and tackling the energy crisis is to convert carbon dioxide into valuable liquid fuels through artificial photosynthesis. Nevertheless, most photocatalysts have poor product selectivity, low catalytic performance, and poor cycling stability. Herein, we synthesized novel UiO …Acidic oxygen evolution reaction (OER) catalysts face the fundamental challenge of the trade-off between activity and durability that has not yet been well addressed. Herein, we integrate high activity of nanoparticles and good stability of bulk materials into a “macro-nano” catalyst through two-dimensional self-assembling of …The key of syngas (a mixture of CO and H2) chemistry lies in controlled dissociative activation of CO and C–C coupling. We demonstrate here that a bifunctional catalyst of partially reducible manganese oxide in combination with SAPO-34 catalyzes the selective formation of light olefins, which validates the generality of the OX-ZEO (oxide …Read research published in the ACS Catalysis Vol. 13 Issue 6 on ACS Publications, a trusted source for peer-reviewed journals.ConspectusThe hydrogenative conversion of both CO and CO2 into high-value multicarbon (C2+) compounds, such as olefins, aromatic hydrocarbons, ethanol, …Herein, we disclose a Ni-catalyzed 1,1-difunctionalization of unactivated terminal alkenes that enables the incorporation of two different heteroatom motifs across an olefin backbone, thus streamlining the access to α-aminoboronic acid derivatives from simple precursors. The method is characterized by its simplicity and generality across a …ACS Catalysis 2024, Article ASAP. Di Chao, Tong-Xin Liu, Pengling Zhang, Shilu Xia, Panting Yang, Mengjiao Huang, Qingfeng Liu, Guisheng Zhang. Interrupted N-Heterocyclic Carbene-Catalyzed Radical Coupling Strategy: A Versatile Platform for Alkylation and Arylation of [60]Fullerene.Are you getting ready to take your DMV written test? If so, you’re probably feeling a little overwhelmed. After all, the written test is an important part of getting your driver’s ...Chiral oxazolidinones are a class of important heterocyclic compounds in pharmaceutical chemistry due to their biological activity. Halohydrin dehalogenase-catalyzed epoxide ring-opening reaction with cyanate offers an attractive approach to the synthesis of chiral oxazolidinones, but the α/β-regioselectivity and stereoselectivity are …Marriott has announced the opening of the AC Hotel by Marriott St. Julian's in the sunny island nation of Malta in southern Europe. We may be compensated when you click on product ...Included among the many challenges regarding renewable energy technology are improved electrocatalysts for the oxygen evolution reaction (OER). In this study, we report a novel bifunctional electrocatalyst based on a highly dense CoOx catalyst by introducing CeOx. The CoOx catalyst is fabricated by two-step electrodeposition, …Electrocatalytic hydrogenation is increasingly studied as an alternative to integrate the use of recycled carbon feedstocks with renewable energy sources. However, the abundant empiric observations available have not been correlated with fundamental properties of substrates and catalysts. In this study, we investigated electrocatalytic hydrogenation of a homologues series of carboxylic acids ... The transformation of CO2 into a single product is a critical scientific challenge because of the difficulty associated with targeted activation and conversion of CO2 by heterogeneous catalysts. Herein, we present an atomic-scale dispersed Co–N species anchored Co@C hybrid structure (entitled as Co@CoN&C) that regulates …Dr. Buonsanti is an expert in catalysis and materials chemistry focusing on the design and use of nanomaterials to drive chemical, electrochemical, and …Mar 1, 2022 · Dual-metal-site catalysts (DMSCs) have emerged as a frontier in heterogeneous catalysis, while the underlying relationships connecting their dual-site synergistic effects on catalytic performance remain unclear. Here we present a comprehensive first-principles study of O2 activation and CO oxidation on a series of N-coordinated DMSCs. We discovered that the N3-coordinated-adjacent dual-metal ... Check out the latest edition of the ACS Catalysis on ACS Publications, a trusted source for peer-reviewed journals. Production of formate or CO from electrochemical CO2 reduction reactions (eCO2RRs) represents a promising way to utilize CO2 with future low-carbon electricity to produce value-added chemicals and fuels. Herein, a series of Cu–Sn composite catalysts were designed for eCO2RRs. The reduction products could be tuned selectively from …In this Perspective article, we review different strategies in multicatalysis that bring distinct challenges and opportunities. We divide this overarching field into three main categories: cooperative, domino, and relay catalysis. Each category is described along with representative examples to highlight its features.Mar 25, 2022 · ACS Catalysis (2017), 7 (5), 3540-3547 CODEN: ACCACS; ISSN: 2155-5435. ( American Chemical Society ) Developing highly efficient and affordable noble-metal-free catalysts toward the hydrogen evolution reaction (HER) is an important step toward the economical prodn. of hydrogen. May 5, 2023 · When Pt10 clusters on an iron oxide surface are heated, they first become covered in lattice oxygen and are subsequently encapsulated by an iron oxide conglomerate. Surprisingly, even the encapsulated clusters are mobile and thus undergo sintering into small, immobile nanoparticles. The authors would like to acknowledge the graphic designer, Vera Hiendl. View the article. Feb 2, 2021 · Her research at Queens University is diverse, spanning materials chemistry, main group catalysis, and transition metal-based catalysis. Crudden has served as an associate editor for ACS Catalysis ... A general iron-catalyzed methylation has been developed using methanol as a C1 building block. This borrowing hydrogen approach employs a Knölker-type (cyclopentadienone)iron carbonyl complex as catalyst (2 mol %) and exhibits a broad reaction scope. A variety of ketones, indoles, oxindoles, amines, and sulfonamides undergo mono- or dimethylation …Oct 7, 2022 · The Investigation of a Switchable Iridium Catalyst for the Hydrogenation of Amides: A Case Study of C–O Versus C–N Bond Scission. Anne K. Ravn. and. Nomaan M. Rezayee *. ACS Catalysis 2022, 12, 19, 11927-11933 (Letter) Publication Date (Web): September 16, 2022. Abstract. Fischer-Tropsch synthesis (FTS) provides a nonpetroleum route for the production of value-added α-olefins from syngas. However, regulating the product distribution to promote the formation of long-chain α-olefins while maintaining low selectivity to C1 byproducts (CO2 and CH4) remains a great challenge. Herein, a series of alkali …Most people use the term AC condenser to refer to the part of the air conditioning system that sits outside the home, even though this part of the system has more components that j...For Librarians & Account Managers. ACS & Open Access. Matthew J. McKay. [email protected] Having access to mild and operationally simple techniques for attaining carbohydrate targets will be necessary to facilitate advancement in biological, medicinal, and pharmacological research. Even with the abundance of elegant reports for generating ...We report the selective hydroxylation of small alkanes with H2O2 catalyzed by an artificial P450 peroxygenase system generated from engineered cytochrome P450BM3 variants in assistance with dual-functional small molecule (DFSM), in which DFSM acts as a general acid–base co-catalyst for activating H2O2. This peroxygenase …Professor Kazunari Domen has devoted his research career in catalysis to development of water splitting photocatalysts, mechanocatalytic water splitting, transition metal oxide mesoporous materials, transmission infrared spectroscopy, infrared reflection absorption spectroscopy (IRAS), time-resolved infrared laser spectroscopy, surface …CO hydrogenation to isobutyl alcohol is a promising route for CO transformation to high value-added products. However, the formation mechanism of isobutyl alcohol is complex, and its synthesis requires complex catalysts and harsh reaction conditions, which hinders the identification of active sites. Herein, we efficiently …Key similarities and differences of Pd and Ni in catalytic systems are discussed. Overall, Ni and Pd catalyze a vast number of similar C–C and C–heteroatom bond-forming reactions. However, the smaller atomic radius and lower electronegativity of Ni, as well as the more negative redox potentials of low-valent Ni species, often provide …graminicola as a representative member of a large uncharacterized subgroup of AA5_2. Through recombinant production and detailed kinetic analysis, we ...Dry reforming of methane (DRM) can convert greenhouse gases (CO2 and CH4) into value-added syngas (CO and H2), which is one of the promising approaches to achieve carbon neutrality. Designing coking resistant catalysts is still a challenge for an efficient DRM reaction. Here, we developed an efficient binary Mo–Ni catalyst through elucidating the promotional role of Mo in boosting the coking ... 1,3,4-Oxadiazolines can be activated by triplet energy transfer catalysis under visible-light irradiation. The generated carbenes react with electron-poor olefins, giving valuable spirocyclopropanes. Mechanistic investigations, both theoretical and experimental, uncover plausible pathways and highlight the importance of the triplet energy transfer steps. View …Dry reforming of methane (DRM) can convert greenhouse gases (CO2 and CH4) into value-added syngas (CO and H2), which is one of the promising approaches to achieve carbon neutrality. Designing coking resistant catalysts is still a challenge for an efficient DRM reaction. Here, we developed an efficient binary Mo–Ni catalyst through elucidating the promotional role of Mo in boosting the coking ... . 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