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Identifying Brønsted acid site functions in pore mouth catalysis for alkane hydroisomerization 确定孔口催化烷烃加氢异构化过程中的布氏酸位点功能
IF 9.4
Chem Catalysis Pub Date : 2024-08-15 DOI: 10.1016/j.checat.2024.101088
{"title":"Identifying Brønsted acid site functions in pore mouth catalysis for alkane hydroisomerization","authors":"","doi":"10.1016/j.checat.2024.101088","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101088","url":null,"abstract":"In this issue of Chem Catalysis, Hao et al. describe the role of Brønsted acid sites near the pore mouth region of ZSM-5 in Pt/Al2O3-ZSM-5 catalysts f…","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"31 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142023070","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
Electrified membranes for sustainable water decontamination 用于可持续水净化的电化膜
IF 9.4
Chem Catalysis Pub Date : 2024-08-15 DOI: 10.1016/j.checat.2024.101081
Yanbiao Liu
{"title":"Electrified membranes for sustainable water decontamination","authors":"Yanbiao Liu","doi":"10.1016/j.checat.2024.101081","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101081","url":null,"abstract":"<p>By integrating the advantages of electrochemistry and membrane separation, electrified membranes have emerged as a next-generation technology for the mitigation of environmental pollution. In this issue of <em>Chem Catalysis</em>, Zhang and colleague report on an electrified reduced graphene oxide membrane for effective water purification via electrochemical activation of peroxymonosulfate. This innovative technology demonstrates robust performance in the destruction of a range of organic contaminants with minimal energy requirements.</p>","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"10 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142023134","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
Selective electrochemical H2O2 production by a molecular copper catalyst: A crucial relation between reaction rate and mass transport 分子铜催化剂的选择性电化学 H2O2 生产：反应速率与质量传输之间的重要关系
IF 9.4
Chem Catalysis Pub Date : 2024-08-05 DOI: 10.1016/j.checat.2024.101069
{"title":"Selective electrochemical H2O2 production by a molecular copper catalyst: A crucial relation between reaction rate and mass transport","authors":"","doi":"10.1016/j.checat.2024.101069","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101069","url":null,"abstract":"<p>Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) generation via electrochemical oxygen reduction is a sustainable production method for this bulk chemical. However, the selectivity of molecular catalysts for electrochemical H<sub>2</sub>O<sub>2</sub> generation has hardly been investigated in a systematic manner, and it is unknown if their stability is sufficient for H<sub>2</sub>O<sub>2</sub> generation in bulk electrolysis. This study answers these questions using the copper-based Cu(tmpa) (tmpa = tris(2-pyridylmethyl)amine) complex. Since the selectivity of H<sub>2</sub>O<sub>2</sub> production originates from the relative rates of oxygen and H<sub>2</sub>O<sub>2</sub> reduction, we show that substrate availability and catalyst concentration are key descriptors to tune the selectivity. Consequently, we can control the Faradaic efficiency to H<sub>2</sub>O<sub>2</sub> (FE<sub>H2O2</sub>) in bulk electrolysis, and micromolar concentrations of Cu(tmpa) are sufficient for H<sub>2</sub>O<sub>2</sub> production with an FE<sub>H2O2</sub> of more than 50% over 8 h. Additionally, we show that Cu(tmpa) has a great electrochemical stability and is able to generate H<sub>2</sub>O<sub>2</sub> in various electrolytes.</p>","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"190 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141892197","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
Application of monoamine oxidase in organic synthesis 单胺氧化酶在有机合成中的应用
IF 9.4
Chem Catalysis Pub Date : 2024-07-29 DOI: 10.1016/j.checat.2024.101068
{"title":"Application of monoamine oxidase in organic synthesis","authors":"","doi":"10.1016/j.checat.2024.101068","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101068","url":null,"abstract":"<p>Monoamine oxidase (MAO), as one of the efficient and green biocatalysts, could efficiently convert amines into imines, with the participation of the cofactor flavin adenine dinucleotide (FAD) and oxygen. In particular, MAOs from <em>Aspergillus niger</em> (MAO-N) have been extensively engineered, which gradually develop into a class of catalysts in the fabrication of diverse N-heterocycles, adapted to various types of substrates including but not limited to pyridine, indole, pyrrole, and tetrahydroisoquinoline. This review provides an overview of the utilization of MAO in organic synthesis, including the conversion of amines to carbonyl compounds, kinetic resolution of racemic amines, conversion of achiral amines into achiral imines and chiral imines, and so on. The high selectivity and activity of MAO render it a highly promising candidate for synthetic applications, with significant potential in the synthesis of drug molecules in particular.</p>","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"356 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141795072","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
Direct quantification of electrochemical CO2 reduction products with an improved DEMS setup 利用改进的 DEMS 设置直接量化电化学二氧化碳还原产物
IF 9.4
Chem Catalysis Pub Date : 2024-07-23 DOI: 10.1016/j.checat.2024.101065
{"title":"Direct quantification of electrochemical CO2 reduction products with an improved DEMS setup","authors":"","doi":"10.1016/j.checat.2024.101065","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101065","url":null,"abstract":"<p>The analytical tools to quantify CO<sub>2</sub>RR products are often slow and have high limits of detection. As a result, researchers are forced to extend the duration of their experiments to accumulate sufficient product and surpass these detection limits. This slows down research considerably, and the research scope often remains limited. To help speed up CO<sub>2</sub>RR catalyst studies, we have developed a new differential electrochemical mass spectrometer (DEMS) setup and cell design that enables the quantification of major gaseous and liquid products significantly faster than conventional analytical techniques. Special attention was given to the hydrodynamics of the cell to avoid mass transfer limitations and the calibration of the setup to accurately quantify the major CO<sub>2</sub> reduction products. As proof of concept of the methodology, the products formed during CO<sub>2</sub>RR on a polycrystalline Ag and Cu electrode in a 0.1-M KHCO<sub>3</sub> electrolyte at different potentials were measured and quantified.</p>","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"24 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141754635","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
Photocatalytic conversion of lignin into aromatic monomers with adsorbents of radical species from water dissociation 利用水解离自由基吸附剂将木质素光催化转化为芳香族单体
IF 9.4
Chem Catalysis Pub Date : 2024-07-23 DOI: 10.1016/j.checat.2024.101066
{"title":"Photocatalytic conversion of lignin into aromatic monomers with adsorbents of radical species from water dissociation","authors":"","doi":"10.1016/j.checat.2024.101066","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101066","url":null,"abstract":"<p>Photocatalytic conversion of lignin into aromatic monomers by cleaving interunit C–O bonds is a promising approach to reduce reliance on fossil fuel resource. However, industrial implementation is hindered by insufficient reaction efficiency and selectivity for target monomers. This study addresses these challenges by applying adsorbent-mediated catalysis and developing a quaternary Cd<sub><em>x</em></sub>Zn<sub>1–<em>x</em></sub>In<sub>2</sub>S<sub>4</sub> photocatalyst. This catalyst utilizes radical species from photocatalytic water dissociation to promote the cleavage of aryl ether C–O bonds in lignin model compounds, achieving nearly complete conversion with over 90% selectivity for target aromatic monomers. This is a significant improvement over the 50% or less conversion and selectivity performed by water-free photocatalytic system. The study shows that H∗ and ∗OH from water dissociation can modify the catalytic microenvironment and reaction kinetics, increasing the energy barrier for side reactions and enhancing hydrogen transfer efficiency. Therefore, the target C–O cleavages can be remarkably promoted while the oxy-dehydrogenation side reactions can be impeded.</p>","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"100 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141754280","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
Electrochemical reduction of nitrate to ammonia: From fundamental understanding to practical applications 硝酸盐电化学还原成氨：从基本认识到实际应用
IF 9.4
Chem Catalysis Pub Date : 2024-07-23 DOI: 10.1016/j.checat.2024.101060
{"title":"Electrochemical reduction of nitrate to ammonia: From fundamental understanding to practical applications","authors":"","doi":"10.1016/j.checat.2024.101060","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101060","url":null,"abstract":"<p>Ammonia is not only an important raw material for industry and agriculture but also a carbon-free energy carrier with high energy density. Traditional ammonia synthesis relies on the Haber-Bosch process under extreme conditions, leading to substantial energy consumption and greenhouse gas emissions. Electrochemical reduction of nitrate (NO<sub>3</sub><sup>−</sup> reduction reaction [RR]) to ammonia can simultaneously produce valuable ammonia and eliminate nitrate pollution from the environment and has therefore attracted global attention. In this paper, we summarize recent progress in the field of NO<sub>3</sub><sup>−</sup>RR, including the reaction mechanism, electrocatalyst development, reactor designs, and practical applications. New coupling reactions for removing NO<sub>3</sub><sup>−</sup> together with other contaminants are also introduced briefly. Finally, the future prospect of NO<sub>3</sub><sup>−</sup>RR, particularly the critical requirement to enable practical application of the technique, is put forward. This paper provides a timely summary of the research progress and offers important guidance for researchers in the field of environmental remediation and clean energy.</p>","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"51 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141754636","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
Key engineering design aspects of photo-assisted electrochemical reactors for water treatment 用于水处理的光辅助电化学反应器的关键工程设计问题
IF 9.4
Chem Catalysis Pub Date : 2024-07-18 DOI: 10.1016/j.checat.2024.101031
{"title":"Key engineering design aspects of photo-assisted electrochemical reactors for water treatment","authors":"","doi":"10.1016/j.checat.2024.101031","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101031","url":null,"abstract":"<p>Ashley Hesterberg Butzlaff (environmental engineer at the US Environmental Protection Agency) and Mohamed Ateia Ibrahim (environmental engineer and group leader at the US Environmental Protection Agency and adjunct assistant professor at Rice University) delve into the pivotal role of reactor design parameters and tools in advancing the performance and scalability of photo-assisted electrochemical systems for water treatment. These insights highlight the necessity of precise reactor design in optimizing efficiency, ensuring scalability, and ultimately transforming water-purification technologies.</p>","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"60 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141726467","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
Confining volatile boron oxide species for stable oxidative dehydrogenation of propane 封闭挥发性氧化硼物种以实现丙烷的稳定氧化脱氢反应
IF 9.4
Chem Catalysis Pub Date : 2024-07-18 DOI: 10.1016/j.checat.2024.101067
{"title":"Confining volatile boron oxide species for stable oxidative dehydrogenation of propane","authors":"","doi":"10.1016/j.checat.2024.101067","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101067","url":null,"abstract":"<p>The leaching of active boron centers is a key concern for boron oxide catalysts in oxidative dehydrogenation of propane (ODHP). In this issue of <em>Chem Catalysis</em>, Xie et al. report that construction of a porous Al<sub>2</sub>O<sub>3</sub> nano-wall on supported boron oxide catalysts can confine volatile boron species for stable ODHP.</p>","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"24 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141726475","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
New insights on selectivity control beyond catalyst factors for CO2 electroreduction 二氧化碳电还原催化剂因素之外的选择性控制新见解
IF 9.4
Chem Catalysis Pub Date : 2024-07-18 DOI: 10.1016/j.checat.2024.101055
{"title":"New insights on selectivity control beyond catalyst factors for CO2 electroreduction","authors":"","doi":"10.1016/j.checat.2024.101055","DOIUrl":"https://doi.org/10.1016/j.checat.2024.101055","url":null,"abstract":"<p>The catalyst and its surrounding microenvironment jointly determine the performance of electrocatalytic CO<sub>2</sub> reduction reactions. In a recent issue of <em>Chem Catalysis</em>, Takanabe and co-workers showed that microkinetic studies on factors beyond the catalyst offer valuable guidance for optimizing the performance of copper-based catalysts under industrial conditions.</p>","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"340 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141726472","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
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