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题名: Kinetics of acetic acid esterification with 2-ethoxyethanol over an Al-pillared clay catalyst
作者: Wang, YJ;  Li, WZ
关键词: Al-exchanged pillared clay catalyst ;  2-ethoxyethanol ;  esterification ;  kinetics
刊名: REACTION KINETICS AND CATALYSIS LETTERS
发表日期: 2004
卷: 83, 期:1, 页:195-203
收录类别: SCI
文章类型: Article
项目归属: 801
产权排名: 2;2
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The Al-pillared clay catalyst obtained by exposing activated clay powder to sulfuric acid and aluminium salts and calcining in air at 373-673 K, was found to be highly active for the title reaction. The results indicated that pillared layer clay of the mixed oxide has been employed as parent catalysts for their definite structure and special properties which can be modified by the substitution of L and B acid sites cations. Solid acid catalyst of Supported aluminium was found to be highly active and selective at the 373-473 K temperature range for heterogeneous esterification. The activity is mainly attributed to the Lewis (and a considerably small number of Bronsted) acid sites whose number and strength increased due to pillaring. The water produced in the esterification can be induced by Al3+, which makes the catalyst surface to form strong B acid. Their acidities are obtained by pH measurement. If only B acid sites are > 70%, and pH < 1 in the 2-ethoxyethanol, there exists an activity of esterification. The used catalyst gave identical results with that of the fresh one. X-ray diffraction spectra show that the composition and active phase of the used catalysts are the same as the fresh ones. The kinetic study of the reaction was carried out by an integral method of analysis. The kinetic equation of surface esterification is y = 2.36x - 0.98.
关键词[WOS]: FRIEDEL-CRAFTS ALKYLATION ;  MONTMORILLONITE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000224049400026
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/83019
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Shenyang Univ Technol, Sch Petrochem Engn, Liaoyang 111003, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Wang, YJ,Li, WZ. Kinetics of acetic acid esterification with 2-ethoxyethanol over an Al-pillared clay catalyst[J]. REACTION KINETICS AND CATALYSIS LETTERS,2004,83(1):195-203.
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