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题名: Development of hierarchical MCM-49 zeolite with intracrystalline mesopores and improved catalytic performance in liquid alkylation of benzene with ethylene
作者: Gao, Ningning1;  Xie, Sujuan1;  Liu, Shenglin1;  Xin, Wenjie1;  Gao, Yang1;  Li, Xiujie1;  Wei, Huijuan1, 2;  Liu, Hui1, 2;  Xu, Longya1, 3
关键词: Hierarchical porosity ;  Intracrystalline mesopores ;  MWW ;  Desilication ;  Alkylation
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2015-08-01
DOI: 10.1016/j.micromeso.2015.03.009
卷: 212, 页:1-7
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Hierarchical MCM-49 zeolite with intracrystalline mesopores was prepared through post-treating the conventional MCM-49 zeolite in hexadecyltrimethylammonium bromide (CTAB) and NaOH mixed solution. N-2 adsorption and desorption, XRD, TEM, XRF, ICP and Py-IR techniques were applied to characterize the obtained samples. It was found that uniform intracrystalline mesopores were distributed in the MCM-49 crystals, and the intracrystalline meso-porosity could be modified by changing the post-treatment conditions such as CTAB concentration, NaOH concentration, temperature and time. Based on the characterization results upon the hierarchical MCM-49 zeolite samples obtained by post-treating different time, the formation of intracrystalline mesopores in MCM-49 zeolite was proposed, which followed a CTAB micelle directed desilication mechanism. By virtue of the intracrystalline mesopores, the hierarchical MCM-49 zeolite prepared under proper post-treatment condition exhibited superior stability than the conventional MCM-49 zeolite in liquid alkylation of benzene with ethylene. (C) 2015 Elsevier Inc. All rights reserved.
关键词[WOS]: DIFFERENT ALUMINUM CONTENT ;  HIGH-SILICA ZEOLITES ;  ALKALINE-SOLUTIONS ;  ZSM-5 ZEOLITE ;  DESILICATION ;  MECHANISM ;  DISPROPORTIONATION ;  DISSOLUTION ;  MORDENITE
语种: 英语
WOS记录号: WOS:000355037800001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146238
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, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Gao, Ningning,Xie, Sujuan,Liu, Shenglin,et al. Development of hierarchical MCM-49 zeolite with intracrystalline mesopores and improved catalytic performance in liquid alkylation of benzene with ethylene[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2015,212:1-7.
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