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学科主题: 物理化学
题名: Modification of nanocrystalline HZSM-5 zeolite with tetrapropylammonium hydroxide and its catalytic performance in methanol to gasoline reaction
作者: He Yingping1;  Liu Min1;  Dai Chengyi1;  Xu Shutao2;  Wei Yingxu2;  Liu Zhongmin2;  Guo Xinwen1
通讯作者: Liu Min ;  Guo Xinwen
关键词: Nanocrystalline HZSM-5 ;  Zeolite ;  Tetrapropylammonium hydroxide ;  Methanol to gasoline
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2013-06-01
DOI: 10.1016/S1872-2067(12)60579-8
卷: 34, 期:6, 页:1148-1158
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: DNL12
项目归属: DNL1201
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
资助者: 2,4
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Nanocrystalline ZSM-5 zeolite was modified with tetrapropylammonium hydroxide (TPAOH) solution. The effect of the TPAOH treatment time on the catalytic performance of HZSM-5 was investigated in methanol to gasoline (MTG) reaction. The modified samples were characterized using X-ray diffraction, scanning electron microscopy, Al-27 and Si-29 magic-angle spinning nuclear magnetic resonance spectroscopy, X-ray photoelectron spectroscopy, N-2 adsorption, and NH3 temperature-programmed desorption. The HZSM-5 structure was basically unchanged after modification, but the relative crystallinity increased and the crystal morphology was more regular. The Brunauer-Emmett-Teller surface area, the micropore surface area, the surface Si/Al ratio, and the amount of strong acid sites increased; this might be caused by desilication and dealumination, and secondary crystallization of the zeolite during the treatment. The stability of the catalyst was significantly improved after modification, as reflected by the increased lifetime from 70 h to above 170 h in MTG reaction. The catalyst lifetime increased with increasing TPAOH treatment time. Hydrogen transfer reactions became faster and led to more isoparaffins and less olefins in the liquid products. (c) 2013, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词[WOS]: NAOH
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000320747400012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119080
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.Dalian Univ Technol, Sch Chem Engn, Dept Catalysis Chem & Engn, State Key Lab Fine Chem, Dalian 116024, Liaoning, Peoples R China
2.Dalian Univ Technol, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
He Yingping,Liu Min,Dai Chengyi,et al. Modification of nanocrystalline HZSM-5 zeolite with tetrapropylammonium hydroxide and its catalytic performance in methanol to gasoline reaction[J]. CHINESE JOURNAL OF CATALYSIS,2013,34(6):1148-1158.
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