Formation of Epoxycyclooctane during the Co-Oxidation of Cyclooctene and Alkylbenzenes

IF 0.7 Q4 ENGINEERING, CHEMICAL Catalysis in Industry Pub Date : 2024-05-27 DOI:10.1134/S2070050424700041
N. I. Kuznetsova, V. N. Zudin
{"title":"Formation of Epoxycyclooctane during the Co-Oxidation of Cyclooctene and Alkylbenzenes","authors":"N. I. Kuznetsova,&nbsp;V. N. Zudin","doi":"10.1134/S2070050424700041","DOIUrl":null,"url":null,"abstract":"<p>Cyclooctene and alkylbenzenes are subjected to co-oxidation in oxygen and a system of two catalysts. Radical catalyst Fe(acac)<sub>3</sub>/NHPI mediates the formation of alkylbenzene hydroperoxides, which are consumed in situ during the MoO<sub>3</sub>/SiO<sub>2</sub>-catalyzed epoxidation of cyclooctene. The chain oxidation rate is limited in cyclooctene and MoO<sub>3</sub>/SiO<sub>2</sub>, but radical catalyst Fe(acac)<sub>3</sub>/NHPI retains fairly high activity in the oxidation of alkylbenzene in hydroperoxide. It is found that isopropylbenzene is a better co-reducing agent than ethylbenzene because it ensures more vigorous and selective formation of epoxycyclooctane. At optimized amounts of components and a temperature of 80°C, selectivity toward epoxycyclooctane reaches 92 and 96% in ethylbenzene or isopropylbenzene, respectively, with more than 70% conversion of cyclooctene.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"16 2","pages":"141 - 151"},"PeriodicalIF":0.7000,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis in Industry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S2070050424700041","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0

Abstract

Cyclooctene and alkylbenzenes are subjected to co-oxidation in oxygen and a system of two catalysts. Radical catalyst Fe(acac)3/NHPI mediates the formation of alkylbenzene hydroperoxides, which are consumed in situ during the MoO3/SiO2-catalyzed epoxidation of cyclooctene. The chain oxidation rate is limited in cyclooctene and MoO3/SiO2, but radical catalyst Fe(acac)3/NHPI retains fairly high activity in the oxidation of alkylbenzene in hydroperoxide. It is found that isopropylbenzene is a better co-reducing agent than ethylbenzene because it ensures more vigorous and selective formation of epoxycyclooctane. At optimized amounts of components and a temperature of 80°C, selectivity toward epoxycyclooctane reaches 92 and 96% in ethylbenzene or isopropylbenzene, respectively, with more than 70% conversion of cyclooctene.

Abstract Image

Abstract Image

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
环辛烯和烷基苯的共氧化作用生成环氧环辛烷
摘要环辛烯和烷基苯在氧气和两种催化剂体系中发生共氧化反应。自由基催化剂 Fe(acac)3/NHPI 介导了烷基苯氢过氧化物的形成,这些氢过氧化物在 MoO3/SiO2 催化环辛烯环氧化过程中被就地消耗。环辛烯和 MoO3/SiO2 的链氧化速率有限,但自由基催化剂 Fe(acac)3/NHPI 在过氧化氢烷基苯氧化过程中保持了相当高的活性。研究发现,异丙苯是比乙苯更好的共还原剂,因为它能确保环氧环辛烷的形成更有活力和选择性。在各组分的最佳用量和 80°C 的温度下,乙苯或异丙苯对环氧环辛烷的选择性分别达到 92% 和 96%,环辛烯的转化率超过 70%。
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
Catalysis in Industry
Catalysis in Industry ENGINEERING, CHEMICAL-
CiteScore
1.30
自引率
14.30%
发文量
21
期刊介绍: The journal covers the following topical areas: Analysis of specific industrial catalytic processes: Production and use of catalysts in branches of industry: chemical, petrochemical, oil-refining, pharmaceutical, organic synthesis, fuel-energetic industries, environment protection, biocatalysis; technology of industrial catalytic processes (generalization of practical experience, improvements, and modernization); technology of catalysts production, raw materials and equipment; control of catalysts quality; starting, reduction, passivation, discharge, storage of catalysts; catalytic reactors.Theoretical foundations of industrial catalysis and technologies: Research, studies, and concepts : search for and development of new catalysts and new types of supports, formation of active components, and mechanochemistry in catalysis; comprehensive studies of work-out catalysts and analysis of deactivation mechanisms; studies of the catalytic process at different scale levels (laboratory, pilot plant, industrial); kinetics of industrial and newly developed catalytic processes and development of kinetic models; nonlinear dynamics and nonlinear phenomena in catalysis: multiplicity of stationary states, stepwise changes in regimes, etc. Advances in catalysis: Catalysis and gas chemistry; catalysis and new energy technologies; biocatalysis; nanocatalysis; catalysis and new construction materials.History of the development of industrial catalysis.
期刊最新文献
Use of Microalgae Biomass to Synthesize Marketable Products. Part 5: Production of Jet Fuel from Microalgae Biomass Use of Microalgae Biomass to Synthesize Marketable Products. Part 6: Production of Bioplastics from Microalgae Studying the Kinetic Laws of the Liquid-Phase Oxidation of sec-Butylbenzene in the Presence of N-Hydroxyphthalimide Dehydrogenation of n-Butane to Butadiene-1,3 on Aluminochromium Catalyst. Part 2: Formulating a Mathematical Model of the Reactor Experimental Studies and Mathematical Modeling of the Catalytic Conversion of Biodiesel Fuel to Synthesis Gas
×
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