The Mechanism of HDS Catalysis

IF 9.3 2区 化学 Q1 CHEMISTRY, PHYSICAL Catalysis Reviews-Science and Engineering Pub Date : 1995-08-01 DOI:10.1080/01614949508006446
A. N. Startsev
{"title":"The Mechanism of HDS Catalysis","authors":"A. N. Startsev","doi":"10.1080/01614949508006446","DOIUrl":null,"url":null,"abstract":"Introduction The mechanism of heterogeneous catalytic reactions is much more difficult to elucidate than that of homogeneous systems. Despite the facilities provided by physical methods for investigating the surface of solids, obtaining detailed information on the structure of the active component in real heterogeneous catalysts presents difficulties due to the nonuniform chemical composition of the surface species. Some of these surface species are totally inactive in catalysis, and others can catalyze the given chemical reaction by different pathways and according to different mechanisms. This results in a change of selectivity to the desired product and the appearance of intermediates and reaction by-products. Furthermore, the effect of the reaction medium on the catalyst gains importance during a catalytic process when, at high temperature and pressure, one type of surface species is transformed into another, thus changing the mechanism and direction of the catalyzed reaction. ∗ Telex: 133122 Sovet SU...","PeriodicalId":50986,"journal":{"name":"Catalysis Reviews-Science and Engineering","volume":null,"pages":null},"PeriodicalIF":9.3000,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"190","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Reviews-Science and Engineering","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1080/01614949508006446","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 190

Abstract

Introduction The mechanism of heterogeneous catalytic reactions is much more difficult to elucidate than that of homogeneous systems. Despite the facilities provided by physical methods for investigating the surface of solids, obtaining detailed information on the structure of the active component in real heterogeneous catalysts presents difficulties due to the nonuniform chemical composition of the surface species. Some of these surface species are totally inactive in catalysis, and others can catalyze the given chemical reaction by different pathways and according to different mechanisms. This results in a change of selectivity to the desired product and the appearance of intermediates and reaction by-products. Furthermore, the effect of the reaction medium on the catalyst gains importance during a catalytic process when, at high temperature and pressure, one type of surface species is transformed into another, thus changing the mechanism and direction of the catalyzed reaction. ∗ Telex: 133122 Sovet SU...
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
HDS催化机理研究
非均相催化反应的机理比均相催化反应的机理更难阐明。尽管物理方法为研究固体表面提供了便利,但由于表面物质的化学组成不均匀,获得实际非均相催化剂中活性成分结构的详细信息存在困难。这些表面物质有的完全不具有催化活性,有的则可以通过不同的途径,根据不同的机理催化给定的化学反应。这导致对期望产物的选择性改变以及中间产物和反应副产物的出现。此外,在高温高压催化过程中,当一种表面物质转化为另一种表面物质,从而改变催化反应的机理和方向时,反应介质对催化剂的影响就显得尤为重要。*电传:133122 Sovet SU…
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
CiteScore
22.30
自引率
2.80%
发文量
29
期刊介绍: Catalysis Reviews is dedicated to fostering interdisciplinary perspectives in catalytic science and engineering, catering to a global audience of industrial and academic researchers. This journal serves as a bridge between the realms of heterogeneous, homogeneous, and bio-catalysis, providing a crucial and critical evaluation of the current state of catalytic science and engineering. Published topics encompass advances in technology and theory, engineering and chemical aspects of catalytic reactions, reactor design, computer models, analytical tools, and statistical evaluations.
期刊最新文献
L-Proline: Unraveling its Reactivity and Mechanistic Insights as an Organocatalyst in Multi-Component Synthesis: A Comprehensive Review Zeolite Catalysts for Biomass Valorization: Tuning of active sites for promoting reactivity Best practices in catalyst screening Multi-metallic electrocatalysts as emerging class of materials: opportunities and challenges in the synthesis, characterization, and applications Challenges of heterogeneous catalytic wet air oxidation processes and potential applications on emerging contaminants loaded wastewater treatment
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1