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题名: A mechanistic investigation of the coupled reaction of n-hexane and methanol over HZSM-5
作者: Chang, Fuxiang;  Wei, Yingxu;  Liu, Xianbin;  Zhao, Yinfeng;  Xu, Lei;  Sun, Ying;  Zhang, Dazhi;  He, Yanli;  Liu, Zhongmin
通讯作者: 刘中民
关键词: coupled reaction ;  n-hexane ;  methanol ;  ZSM-5 ;  mechanism
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2007-09-10
DOI: 10.1016/j.apcata.2007.06.005
卷: 328, 期:2, 页:163-173
收录类别: SCI
文章类型: Article
部门归属: 8
项目归属: 803
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: The coupled reaction of n-hexane and methanol was studied and compared with the reactions of individual reactants over HZSM-5 zeolite catalyst. The catalytic reaction test results and the temperature-programmed surface reaction (TPSR) results showed an improvement of the initial n-hexane activity when methanol was used as co-reactant. The FT-IR analysis indicated that methanol was adsorbed on acid sites prior to n-hexane and immediately transformed into surface methoxy groups. These species acted as the active sites for the conversion of n-hexane and improved the initial activity of n-hexane by bimolecular hydride transfer. The catalytic test also suggested that alkenes resulting from the transformation of methanol further enhance the conversion of n-hexane, in addition to the improvement by metboxy groups. A faster conversion of methanol was also observed in the coupled system, which highlights a bidirectional promotion effect of the coupled reaction. A reaction mechanism is proposed to explain all observations. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: NONCLASSICAL CARBONIUM-IONS ;  CATALYTIC CRACKING ;  ZEOLITE CATALYSTS ;  SURFACE METHOXY ;  DIMETHYL ETHER ;  LIGHT OLEFINS ;  HYDROCARBON CRACKING ;  CHEMICAL IONIZATION ;  ACIDIC CATALYSTS ;  TO-HYDROCARBONS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000249173300009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98749
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, Nat Gas Utilizat & Appl Catalysis Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Chang, Fuxiang,Wei, Yingxu,Liu, Xianbin,et al. A mechanistic investigation of the coupled reaction of n-hexane and methanol over HZSM-5[J]. APPLIED CATALYSIS A-GENERAL,2007,328(2):163-173.
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