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题名: An improved catalytic cracking of n-hexane via methanol coupling reaction over HZSM-5 zeolite catalysts
作者: Chang, FX;  Wei, YX;  Liu, XB;  Qi, Y;  Zhang, DZ;  He, YL;  Liu, ZM
通讯作者: 刘中民
关键词: coupling transformation ;  mechanism ;  pulse-reaction ;  activation energy ;  Si/Al ratio
刊名: CATALYSIS LETTERS
发表日期: 2006-02-01
DOI: 10.1007/s10562-005-9626-0
卷: 106, 期:3-4, 页:171-176
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
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The coupling transformation of n-hexane and methanol over HZSM-5 has been investigated with a pulse-reaction system. In the temperature range of 400-500 degrees C, kinetic data was collected and reaction order was determined. Compared with the pure n-hexane cracking, the increased rate constant and the lowered apparent activation energy clearly demonstrate an improvement of n-hexane activation using methanol as co-reactant and an increased contribution of faster bimolecular mechanism to the n-hexane transformation due to methanol introduction. Similarly, the results of coupling transformation performed over HZSM-5 with different Al content further confirm the transition between reaction mechanisms of n-hexane on account of the introduction of methanol. Moreover, the further investigation suggests that the enhancement of n-hexane activation and the change of reaction mechanism are attributed to the presence of intermediate species evolved from methanol. Thus, a proposed reaction pathway of n-hexane activation with methanol as co-reactant was put forward.
关键词[WOS]: REACTION-MECHANISMS ;  ACIDIC CATALYSTS ;  TO-HYDROCARBONS ;  SURFACE METHOXY ;  DIMETHYL ETHER ;  CONVERSION ;  MOLECULES ;  SAPO-34
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000234923400014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93679
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, Beijing Grad Sch, Dalian 116023, Peoples R China

Recommended Citation:
Chang, FX,Wei, YX,Liu, XB,et al. An improved catalytic cracking of n-hexane via methanol coupling reaction over HZSM-5 zeolite catalysts[J]. CATALYSIS LETTERS,2006,106(3-4):171-176.
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