Chem Catalysis最新文献_第6页

Highly diastereoselective and enantioselective cyclopropanation of alkenes catalyzed by a chiral iridium(III) porphyrin complex 手性卟啉铱络合物催化烯烃的高度非对映选择性和非对映选择性环丙化反应

IF 9.4

Chem Catalysis Pub Date : 2025-02-11 DOI: 10.1016/j.checat.2024.101262

Sheng-Yu Li, Shanshan Yuan, Xiao-Ming Zhao, Qunlong Wang, Jieping Zhu, Sheng-Cai Zheng

引用次数: 0

Anodic reactions matter for cathodic electrocarboxylation with CO2 用CO2进行阴极电羧化反应时，阳极反应很重要

IF 9.4

Chem Catalysis Pub Date : 2025-02-11 DOI: 10.1016/j.checat.2025.101263

Jialu Li, Jinqi Xiong, Minghao Sun, Fengwang Li

{"title":"Anodic reactions matter for cathodic electrocarboxylation with CO2","authors":"Jialu Li, Jinqi Xiong, Minghao Sun, Fengwang Li","doi":"10.1016/j.checat.2025.101263","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101263","url":null,"abstract":"Carbon dioxide (CO2) electrocarboxylation presents a promising solution for converting harmful emissions into valuable products, which aligns with the broader goal of establishing a sustainable, carbon-neutral economy. The field has seen significant progress in the electrochemical synthesis of carboxylic acids and related compounds, which are widely used in the pharmaceutical and chemical industries. This review emphasizes the primary obstacles hindering the practical application of electrocarboxylation, most notably the reliance on sacrificial anodes and the inefficiencies associated with traditional reactor designs. It provides a discussion of recent progress and innovative strategies aimed at overcoming these barriers. Specifically, the review examines sacrificial-anode methods and the challenges they pose, such as the need for frequent replenishment and issues with cathode passivation. It also explores strategies for avoiding anode consumption, which include using electrolytes or additives as sacrificial agents and employing paired electrolysis. Furthermore, the potential of microfluidic reactors in enhancing the efficiency of CO2 electrocarboxylation is highlighted, given their capacity to offer precise control over reaction conditions. The review concludes with a perspective on the future of the field by identifying areas that are ripe for additional research and development to ensure the industrial viability of CO2 electrocarboxylation.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"87 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385276","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

Corrosion-induced CoCu microwire arrays for efficient electroreduction of 5-hydroxymethylfurfural 腐蚀诱导CoCu微线阵列用于5-羟甲基糠醛的高效电还原

IF 9.4

Chem Catalysis Pub Date : 2025-02-10 DOI: 10.1016/j.checat.2024.101259

Bin Zhu, Jie Yang, Qiuge Wang, Xiao Yu, Shilin Fan, Weiping Xie, Jian Zhang, Chunlin Chen

{"title":"Corrosion-induced CoCu microwire arrays for efficient electroreduction of 5-hydroxymethylfurfural","authors":"Bin Zhu, Jie Yang, Qiuge Wang, Xiao Yu, Shilin Fan, Weiping Xie, Jian Zhang, Chunlin Chen","doi":"10.1016/j.checat.2024.101259","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101259","url":null,"abstract":"The intersection of corrosion engineering for constructing high-performance electrocatalysts and the efficient upgrading of biomass represents two vibrant, sustainable research themes that promise exciting outcomes when combined. In this study, we achieve the highly selective hydrogenation of 5-hydroxymethylfurfural (HMF) to 2,5-bis(hydroxymethyl)furan (BHMF) over corrosion-induced CoCu microwire arrays on copper foam (CoCuMW/CF). An HMF conversion of 95.7% and a BHMF yield of 85.4% can be achieved in the electrochemical process. Mechanistic investigations indicate that the reaction pathway is primarily governed by the Langmuir-Hinshelwood (L-H) mechanism. Density functional theory (DFT) calculations reveal that the CoCu interface exhibits lower free energy barriers for the hydrogenation steps of HMF, which significantly enhances the catalytic performance and BHMF selectivity. The induction of corrosion enhances the electrochemical hydrogenation performance of the copper-based electrocatalyst, which holds significant value in reducing catalyst costs and accelerating the application of HMF electrohydrogenation.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"12 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143375286","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

Soluble polymer microenvironments promote photocatalytic hydrogen peroxide production and self-Fenton reactions 可溶性聚合物微环境促进光催化过氧化氢生成和自芬顿反应

IF 9.4

Chem Catalysis Pub Date : 2025-02-07 DOI: 10.1016/j.checat.2024.101260

Jie Fu, Shuhua Chen, Xinlin Liu, Haoyue Yang, Yeping Xie, Qiao Zhang, Jinxing Chen, Muhan Cao

{"title":"Soluble polymer microenvironments promote photocatalytic hydrogen peroxide production and self-Fenton reactions","authors":"Jie Fu, Shuhua Chen, Xinlin Liu, Haoyue Yang, Yeping Xie, Qiao Zhang, Jinxing Chen, Muhan Cao","doi":"10.1016/j.checat.2024.101260","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101260","url":null,"abstract":"Photocatalytic hydrogen peroxide (H2O2) production is a promising green technology, but it typically relies on costly sacrificial agents to enhance charge separation and catalytic efficiency. Waste polymers offer a cost-effective alternative, effectively addressing waste management and resource utilization challenges. Herein, we employ waste polymer polyvinyl alcohol (PVA) as a sacrificial agent for photocatalytic H2O2 production, avoiding the harsh and complex hydrolysis process of polyesters and polyolefins. Importantly, the unique structure of PVA creates a localized microenvironment with abundant hydroxyl groups, significantly increasing the H2O2 yield compared with those of conventional sacrificial agents. Additionally, the introduction of iron ions triggers a photo-self-Fenton (PSF) reaction. The hydroxyl groups on the PVA chain facilitate strong interactions with iron species, thereby enhancing the Fe3+/Fe2+ redox cycle and enabling the simultaneous removal of both PVA and other pollutants. This approach offers a novel and sustainable pathway for the direct utilization of polymer waste.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"36 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258620","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

Ligand-enabled, Ni-catalyzed dicarbofunctionalization of alkenyl alcohols 配体激活的镍催化烯醇的二碳功能化

IF 9.4

Chem Catalysis Pub Date : 2025-02-07 DOI: 10.1016/j.checat.2024.101261

Li-Qin She, Dao-Ming Wang, Yichen Wu, Peng Wang

引用次数: 0

Allylgermane synthesis via facile and general nickela-electrocatalyzed electrophile coupling 通过易和一般镍电催化亲电偶联合成烯丙基日耳曼

IF 9.4

Chem Catalysis Pub Date : 2025-02-06 DOI: 10.1016/j.checat.2024.101257

Haifeng Chen, Cai Zhai, Chen Zhu, Magnus Rueping

引用次数: 0

Tuning surface chemistry of inverse catalysts ZnOxHy/Pt(111) without site blocking ZnOxHy/Pt（111）反相催化剂的表面化学调整

IF 9.4

Chem Catalysis Pub Date : 2025-02-06 DOI: 10.1016/j.checat.2024.101258

Kaustubh J. Sawant, Junxian Gao, Jeffrey T. Miller, Zhenhua Zeng, Dmitry Zemlyanov, Jeffrey P. Greeley

引用次数: 0

Modeling electrochemical nitrogen reduction 模拟电化学氮还原

IF 9.4

Chem Catalysis Pub Date : 2025-01-22 DOI: 10.1016/j.checat.2024.101239

Árni Björn Höskuldsson, Yasufumi Sakai, Egill Skúlason

引用次数: 0

Hydrogen peroxide photosynthesis from water and air using a scaled-up 1-m2 flow reactor 过氧化氢在水和空气中进行光合作用，使用放大的1平方米流动反应器

IF 9.4

Chem Catalysis Pub Date : 2025-01-21 DOI: 10.1016/j.checat.2024.101238

Xiaoshan Zheng, Rito Yanagi, Zhenhua Pan, Chong Zhou, Tian Liu, Baoliang Chen, Kenji Katayama, Shu Hu, Chiheng Chu

{"title":"Hydrogen peroxide photosynthesis from water and air using a scaled-up 1-m2 flow reactor","authors":"Xiaoshan Zheng, Rito Yanagi, Zhenhua Pan, Chong Zhou, Tian Liu, Baoliang Chen, Kenji Katayama, Shu Hu, Chiheng Chu","doi":"10.1016/j.checat.2024.101238","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101238","url":null,"abstract":"Particulate photocatalysis (PC) has shown great potential in sustainable chemical synthesis. Until now, developing a scalable PC system remains a major challenge hurdling the practical application of hydrogen peroxide (H2O2) photosynthesis. Here, we report a flexible hydrophobic photocatalyst sheet based on visible-light-responsive bismuth vanadate (BiVO4) photocatalysts with (λ < 520 nm) to achieve flow-transport-dependent cascade photocatalytic H2O2 production. Using dissolved oxygen from the air and deionized water or tap water, the flexible sheets showed solar-to-chemical conversion (STC) efficiency of 0.11%. These BiVO4 photocatalyst sheets were arranged in a 4 × 4-panels array in a 1-m2 flow-by reactor and achieved 1-month outdoor stability under diurnal solar cycles. We utilized this solar-produced H2O2 solution for disinfection, achieving >99.9% inactivation of a coronavirus surrogate in 60 min. Techno-economic analysis (TEA) shows that at 2% STC efficiency, the cost becomes comparable to commercial approaches due to the elimination of transportation, storage, and deployment costs.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"45 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142991221","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

Synergistic integration of atomic-scale Ni-N sites and Ni nanoparticles for enhanced protonation in pH-universal electrochemical CO2 reduction 原子尺度的Ni- n位点和Ni纳米粒子协同集成在ph -通用电化学CO2还原中增强质子化

IF 9.4

Chem Catalysis Pub Date : 2025-01-21 DOI: 10.1016/j.checat.2024.101237

Xi Cao, Shan Ren, Zijuan Yu, Qikui Fan, Qian Lv, Rui Yu, Ang Li, Jian Yang, Junjie Mao

{"title":"Synergistic integration of atomic-scale Ni-N sites and Ni nanoparticles for enhanced protonation in pH-universal electrochemical CO2 reduction","authors":"Xi Cao, Shan Ren, Zijuan Yu, Qikui Fan, Qian Lv, Rui Yu, Ang Li, Jian Yang, Junjie Mao","doi":"10.1016/j.checat.2024.101237","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101237","url":null,"abstract":"The development of efficient and stable electrocatalysts for CO2 reduction is crucial for sustainable CO production. This study introduces a catalyst where Ni nanoparticles and isolated Ni-N sites are supported on mesoporous nitrogen-doped carbon nanotubes (Ni@N-CNTs), which demonstrates exceptional performance in pH-universal environments. The Ni@N-CNTs catalyst achieves a remarkable CO Faradaic efficiency (FE) of about 95% at a current density of 1,200 mA cm−2 in neutral and alkaline flow cells. Notably, it also maintains high FE (>90%) at current densities ranging from 100 to 900 mA cm−2 in acidic environments. Furthermore, in membrane electrode assembly (MEA), it achieves over 90% CO FE at 700 mA cm−2 with prolonged stability. The catalyst can continuously produce CO with 97.5% purity in a practical setting, highlighting its potential for industrial applications. Mechanism studies indicate that the unique interaction between Ni-N and Ni nanoparticles in the Ni@N-CNTs catalyst optimizes the protonation step, enhancing CO formation.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"45 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142991174","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