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学科主题: 物理化学
题名: Isopropylation of m-cresol with IPA using SO3H-functionalized ionic liquids as recoverable catalysts
作者: Liu XM(刘秀梅) ;  Wang C(王畅) ;  Yang M(杨淼) ;  Yan PF(颜佩芳) ;  UrsWelz-Biermann
会议名称: EUCHEM 2010 Conference on Molten Salts and Ionic Liquids
会议日期: 2010-3-14
出版日期: 2010-03-14
会议地点: 德国
通讯作者: Urs Welz-Biermann
部门归属: 二室
主办者: DECHEMA
摘要: SO3H functionalized ionic liquids (ILs) offered a new possibility for developing environmental friendly acid catalysts because it combined the advantages of liquid acids and solid acids, uniform acid sites, water and air stable, easy separation and reusable. In this paper,several SO3H-functionalized (ILs) (scheme 1) bearing an alkane sulfonic acid group attached to an acyclic trialkylammonium cation were synthesized and successfully applied as catalysts for the isopropylation of m-cresol with isopropyl alcohol. The ionic liquids were analyzed and identified by NMR (Varian INOVA 400 MHz) and ESI-MS (Q-TOF Micro Mecromous,VK) analysis. UV-Vis spectra were obtained by UV (SHIMADZU 2500). A qualitative analysis of the product was conducted using GC a Agilent 6890/5973 with a HP-5MS column; quantitative analysis was carried out on a GC Agilent 7890 equipped with a HP-5 column (30m×0.25mm). A series of SO3H functionalized ILs were successfully applied to catalyze isopropylation of m-cresol with IPA with more than 77% conversion of m-cresol and about 48% selectivity of 2I-5MP at 190℃; The sequence of the catalytic activity observed in the isopropylation was in good agreement with the Brønsted acidity order of theILs catalyst determined by the Hammett method. The reaction–separation–recycle process was quite convenient and theILs could be reused at least eight times without an obvious decrease in catalytic activity.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/114464
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Liu XM,Wang C,Yang M,et al. Isopropylation of m-cresol with IPA using SO3H-functionalized ionic liquids as recoverable catalysts[C]. 见:EUCHEM 2010 Conference on Molten Salts and Ionic Liquids. 德国. 2010-3-14.
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