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学科主题: 物理化学
题名: Determination of different acid sites in Beta zeolite for anisole acylation with acetic anhydride
作者: Wei, Huijuan1, 2;  Liu, Kefeng1, 2;  Xie, Sujuan1;  Xin, Wenjie1;  Li, Xiujie1;  Liu, Shenglin1;  Xu, Longya1
通讯作者: 徐龙伢
关键词: Beta zeolite ;  Acylation ;  Methoxyacetophenone ;  Acidity ;  External surface
刊名: JOURNAL OF CATALYSIS
发表日期: 2013-11-01
DOI: 10.1016/j.jcat.2013.07.010
卷: 307, 页:103-110
收录类别: SCI
文章类型: Article
部门归属: DNL08
项目归属: DNL0804
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Catalytic roles of the acid sites in Beta zeolite for the acylation of anisole (AN) with acetic anhydride were investigated. There existed obvious difference between the Beta zeolite acidity modified with inorganic alkali cation (K+) and that modified with organic base (2,4-dimethylquinoline, 2,4-DMQ). With the increase in K+ loadings, the Beta zeolite showed decreases in both total acid strength and acylation performance. Strong acid sites played the predominant role in the AN acylation. Whereas the modifier of 2,4-DMQ mainly poisoned the Bronsted acid sites and kept the Lewis acid sites almost intact. Over the Beta zeolite poisoned by 2,4-DMQ the AN conversion (X-AN) versus the concentration of Bronsted acid sites (CB) could be represented by two linear expressions, namely X-AN = 37.53C(B) - 0.20 (when 0.0053 <= C-B <= 0.0167 mmol/g) and X-AN = 2.68C(B) + 0.38 (when 0.0167 < C-B <= 0.0857 mmol/g). (C) 2013 Published by Elsevier Inc.
关键词[WOS]: FRIEDEL-CRAFTS ACYLATION ;  DIFFERENT PORE SYSTEMS ;  H-BEA ZEOLITE ;  CATALYTIC ROLE ;  HETEROGENEOUS CATALYSTS ;  EXTERNAL SURFACE ;  TRANSFORMATION ;  ACETYLATION ;  DEACTIVATION ;  CHLORIDES
语种: 英语
WOS记录号: WOS:000327903900011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117610
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Wei, Huijuan,Liu, Kefeng,Xie, Sujuan,et al. Determination of different acid sites in Beta zeolite for anisole acylation with acetic anhydride[J]. JOURNAL OF CATALYSIS,2013,307:103-110.
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