Chem Catalysis最新文献_第7页

Stability challenges of anion-exchange membrane water electrolyzers from components to integration level 阴离子交换膜水电解槽从组件到集成层面的稳定性挑战

IF 9.4

Chem Catalysis Pub Date : 2024-10-10 DOI: 10.1016/j.checat.2024.101145

Ziyu Fang, Chao Ye, Tao Ling, Huiping Ji, Chenbao Lu, Changchun Ke, Xiaodong Zhuang, Jieqiong Shan

{"title":"Stability challenges of anion-exchange membrane water electrolyzers from components to integration level","authors":"Ziyu Fang, Chao Ye, Tao Ling, Huiping Ji, Chenbao Lu, Changchun Ke, Xiaodong Zhuang, Jieqiong Shan","doi":"10.1016/j.checat.2024.101145","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101145","url":null,"abstract":"In the face of the imminent challenges of climate change, hydrogen holds the potential to replace fossil fuels as a green and sustainable energy resource. Anion-exchange membrane water electrolyzer (AEMWE) is a quickly rising technology for hydrogen production due to various advantages, including an inexpensive membrane, non-precious metal catalysts, compact size, easy integration with and adaptation to green power, etc. AEMWE involves a typical combination of electrocatalysts, an anion-exchange membrane, membrane electrode assembly, flow channel design, system integration, and green power fluctuation working condition adaptability. However, AEMWE suffers from unsatisfactory operational durability from both individual components and system integration levels, restricting its large-scale application. The development of highly durable AEMWE requires rational and systematic analysis and evaluation of each component for practical integration. This review discusses the durability-limiting factors and common strategies to improve stability based on each level of the AEMWE system, thus fostering future academic and industrial development of highly durable AEMWEs.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"2 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142398097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unlocking the potential for pseudo-molecular catalysts via understanding the activity of transition metal ionic species in zeolites 通过了解沸石中过渡金属离子物种的活性挖掘伪分子催化剂的潜力

IF 9.4

Chem Catalysis Pub Date : 2024-10-09 DOI: 10.1016/j.checat.2024.101130

Christian Schroeder, Maricruz Sanchez-Sanchez

引用次数: 0

Ruthenate perovskite with face-sharing motifs for alkaline hydrogen evolution 具有面共享结构的钌酸包晶用于碱性氢进化

IF 9.4

Chem Catalysis Pub Date : 2024-10-08 DOI: 10.1016/j.checat.2024.101132

Chuanhui Zhu, Hao Tian, Pengfei Tan, Bin Huang, Shuang Zhao, Guohong Cai, Chongyang Yuan, Mei-Huan Zhao, Meng Cao, Jianfa Zhao, Luchuan Shi, Fang Qi, Haili Song, Keke Huang, Shouhua Feng, Mark Croft, Changqing Jin, Shuk-Yin Tong, Man-Rong Li

{"title":"Ruthenate perovskite with face-sharing motifs for alkaline hydrogen evolution","authors":"Chuanhui Zhu, Hao Tian, Pengfei Tan, Bin Huang, Shuang Zhao, Guohong Cai, Chongyang Yuan, Mei-Huan Zhao, Meng Cao, Jianfa Zhao, Luchuan Shi, Fang Qi, Haili Song, Keke Huang, Shouhua Feng, Mark Croft, Changqing Jin, Shuk-Yin Tong, Man-Rong Li","doi":"10.1016/j.checat.2024.101132","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101132","url":null,"abstract":"One of the challenges in designing efficient electrocatalysts is rationalizing the impact of crystal and electronic structures on catalytic activity. Here, we synthesized four BaRuO3 polymorphs with different structures and investigated the d-d interaction stemming from face-sharing RuO6. The polymorph 9R-BaRuO3 has the highest percentage of face-sharing RuO6 octahedra and, therefore, the strongest d-d interaction; it shows the best activity and stability in catalyzing alkaline hydrogen evolution reactions (HER). Specifically, 9R-BaRuO3 displays a small Tafel slope of 30 mV dec−1 and a low overpotential of η10 < 51 mV. This performance is attributed to its high intrinsic activity delivered by the d-d interaction and is intimately related to the crystal structure. The micron-sized 9R-BaRuO3 powders are stable under industrial plasma spraying and carry a current density of 0.4 A/cm2 @ 1.74 V in commercial alkaline water electrolyzers. The results on catalytic activities and crystal structure provide insight for designing better electrocatalysts for practical applications.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"226 1-2 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142384658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electron-shuttle catalysis enables regioselective and stereospecific dialkylation of alkynes 电子穿梭催化实现了炔烃的区域选择性和立体特异性二烷基化反应

IF 9.4

Chem Catalysis Pub Date : 2024-10-08 DOI: 10.1016/j.checat.2024.101129

Zhiting Wang, Changqing Rao, Hanmin Huang

引用次数: 0

Benchmarking photocatalysts for dinitrogen photoreduction reaction 二氮光氧化反应光催化剂的基准测试

IF 9.4

Chem Catalysis Pub Date : 2024-10-02 DOI: 10.1016/j.checat.2024.101128

Po-Wei Huang, Danae A. Chipoco Haro, Hakhyeon Song, Andrew J. Medford, Marta C. Hatzell

引用次数: 0

Phosphorylation-condensation cascade for biocatalytic synthesis of C-nucleosides 磷酸化-缩合级联用于 C 核苷的生物催化合成

IF 9.4

Chem Catalysis Pub Date : 2024-10-02 DOI: 10.1016/j.checat.2024.101127

Andrej Ribar, Martin Pfeiffer, Bernd Nidetzky

{"title":"Phosphorylation-condensation cascade for biocatalytic synthesis of C-nucleosides","authors":"Andrej Ribar, Martin Pfeiffer, Bernd Nidetzky","doi":"10.1016/j.checat.2024.101127","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101127","url":null,"abstract":"C-nucleosides are important targets for synthesis as anti-infective agents and building blocks for therapeutic nucleic acids. Here, we show phosphorylation-condensation cascade reaction to produce pseudouridine 5′-phosphate (Ψ5P) from d-ribose (Rib) and uracil. Rib (∼1.0 M) was phosphorylated at O5 in aqueous acetyl phosphate (1.15 M) via ATP (5 mM) by coupled kinases. Using Ψ5P C-glycosidase, Rib5P intermediate (≥90% yield) was reacted with the mole equivalent of uracil, supplied as a solid, to give Ψ5P in quantitative yield. One-pot reaction optimized for reagent composition, automated pH control, and solid-liquid mass transfer yielded ∼2.2 g Ψ5P (productivity: 38 g/L/h) from 10-mL volume. Synthetic flexibility of the cascade reaction was shown with other pentoses (d-arabinose, 2-deoxy-Rib, d-xylose) and analogs of uracil (6-amino, 2-thio, 4-thio). Collectively, we show massive intensification (≥50-fold) of the pentose phosphorylation as well as the C–C bond-forming condensation step of the overall multienzyme cascade transformation for efficient C-nucleoside (monophosphate) synthesis.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"40 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142363180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cobalt-catalyzed enantioselective hydroetherification of alkenes and symmetric 1,3-diketones 钴催化的烯烃和对称 1,3-二酮的对映选择性氢醚化反应

IF 9.4

Chem Catalysis Pub Date : 2024-10-01 DOI: 10.1016/j.checat.2024.101126

Meihui Guan, Lihan Zhu, Yue Wang, Ge Zhang, Huanran Miao, Bei Chen, Qian Zhang

{"title":"Cobalt-catalyzed enantioselective hydroetherification of alkenes and symmetric 1,3-diketones","authors":"Meihui Guan, Lihan Zhu, Yue Wang, Ge Zhang, Huanran Miao, Bei Chen, Qian Zhang","doi":"10.1016/j.checat.2024.101126","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101126","url":null,"abstract":"Catalytic asymmetric hydroetherification of alkenes constitutes an efficient strategy toward enantioenriched oxygenated building blocks from readily available starting materials. However, the enantioselective intermolecular transformation of simple alkenes is particularly underdeveloped. Here, a Co(III)-hydride-mediated enantioselective olefin hydroetherification through radical-polar crossover H atom transfer has been described, with cyclic 1,3-diketone derivatives as O nucleophilic partners. This practical method is applicable for both styrenes and aliphatic alkenes with good functional group tolerance, enabling facile access to structurally diverse chiral vinylogous ester derivatives with excellent regio-, chemo-, and enantioselectivity. Theoretical studies have shown that the formation of alkyl Co(III) intermediates and the SN2-substitution of alkyl Co(IV) with nucleophiles have an effect on the stereoselectivity of the products. Additionally, the O–H···π interaction between the –OH moiety of substrate moiety and salen ligand plays a crucial role in determining unique asymmetric C–O bond chemoselectivity compared to the disfavored steric hindrance in C–C bond construction.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"44 Suppl 1 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142360491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photoenzymatic synthesis of C4 chemicals from biomass-derived furfural via fumaric semialdehyde 通过富马酸半醛从生物质来源的糠醛中光酶法合成 C4 化学物质

IF 9.4

Chem Catalysis Pub Date : 2024-10-01 DOI: 10.1016/j.checat.2024.101123

Jian Yu, Guang-Hui Lu, Yi He, Min-Hua Zong, Ning Li

引用次数: 0

Asymmetric bridge structure based on NiFe bimetallic sites for optimizing nitrate reduction reaction 基于 NiFe 双金属位点的不对称桥式结构，用于优化硝酸盐还原反应

IF 9.4

Chem Catalysis Pub Date : 2024-10-01 DOI: 10.1016/j.checat.2024.101122

Yuhu Zhou, Ping Deng, Jiechun Zhou, Gan Jia, Xiaoxuan Chen, Wei Wang, Shuang Zhao, Liang Chen, Wei Ye, Guoyang Zhou, Shiyu Du, Peng Gao

{"title":"Asymmetric bridge structure based on NiFe bimetallic sites for optimizing nitrate reduction reaction","authors":"Yuhu Zhou, Ping Deng, Jiechun Zhou, Gan Jia, Xiaoxuan Chen, Wei Wang, Shuang Zhao, Liang Chen, Wei Ye, Guoyang Zhou, Shiyu Du, Peng Gao","doi":"10.1016/j.checat.2024.101122","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101122","url":null,"abstract":"Achieving precise control and an accurate understanding of reaction processes that occur on catalysts at the molecular level is still challenging yet crucial to digging out ideal materials for the nitrate reduction reaction (NO3RR). Considering the representativeness of non-precious metal catalysts and the adjustability of their d electronic states, NiFe bimetallic nanocatalysts with various content ratios were synthesized to evaluate their positive characteristics on the electrochemical NO3RR. Eventually, the Ni0.7Fe0.3 sample inclined toward the cubic FeNi3 structure was proven to have the best electrocatalytic NO3RR performance: 13.61 mol g−1 h−1 ammonia production efficiency (APE) and 99.53% Faradaic efficiency (FE) under 1 M KNO3 and 47.94 mmol g−1 h−1 APE and 95.04% FE under 1 mM KNO3, superior to most reported electrocatalysts. Moreover, the above data outline the complete evolution of the distinct nitrogen-containing intermediate restricted by the NiFe-based asymmetric bridge structure.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"26 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142360490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resin 3D printing enables accessible electrochemical cell design 树脂三维打印实现无障碍电化学电池设计

IF 9.4

Chem Catalysis Pub Date : 2024-09-27 DOI: 10.1016/j.checat.2024.101120

Nicholas B. Watkins, Cyrus J.B.M. Fiori, Florian M. Grass, Jonas C. Peters, John M. Gregoire, Alexis T. Bell, Julia R. Greer, Max A. Saccone, Justin C. Bui

引用次数: 0