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题名: Methane dehydroaromatization on Mo/HMCM-22 catalysts: effect of SiO2/Al2O3 ratio of HMCM-22 zeolite supports
作者: Liu, L;  Ma, D;  Chen, HY;  Zheng, H;  Cheng, MJ;  Xu, YD;  Bao, XH
通讯作者: 包信和
关键词: methane dehydroaromatization ;  HMCM-22 zeolite ;  Mo/HMCM-22 catalyst ;  SiO2/Al2O3 ratio ;  Bronsted acidity
刊名: CATALYSIS LETTERS
发表日期: 2006-04-01
DOI: 10.1007/s10562-006-0023-0
卷: 108, 期:1-2, 页:25-30
收录类别: SCI
文章类型: Article
部门归属: 5,3
项目归属: 502,302
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: HMCM-22 zeolite with variable SiO2/Al2O3 ratios has been successfully synthesized and used as support of molybdenum based catalyst in methane dehydroaromatization. Effect of SiO2/Al2O3 ratio on the catalytic performance of Mo/HMCM-22 catalysts was studied, and results show that methane conversion and benzene selectivity increase with the decrease of SiO2/Al2O3 ratio, and reach maximum on Mo/HMCM-22 catalyst with SiO2/Al2O3 ratio of 25. Further increasing SiO2/Al2O3 ratio results a decrease of activity and benzene selectivity. Al-27 MAS NMR spectroscopy and NH3-TPD techniques were applied to characterize the structure-property relationship of the catalyst. The catalytic performance of Mo/HMCM-22 catalysts in methane dehydroaromatization has been correlated with the Bronsted acidity of HMCM-22 zeolite supports, which may promote not only the methane activation on the Mo carbide sites of Mo/HMCM-22 catalysts, but also further oligomerization of the CHx surface species towards aromatics products in the reaction.
关键词[WOS]: MO-BASED CATALYSTS ;  BIFUNCTIONAL CATALYSIS ;  MOLYBDENUM CATALYSTS ;  ACID SITES ;  AROMATIZATION ;  BENZENE ;  CONVERSION ;  MO/HZSM-5 ;  MCM-22 ;  DEALUMINATION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000236368700006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98057
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

Recommended Citation:
Liu, L,Ma, D,Chen, HY,et al. Methane dehydroaromatization on Mo/HMCM-22 catalysts: effect of SiO2/Al2O3 ratio of HMCM-22 zeolite supports[J]. CATALYSIS LETTERS,2006,108(1-2):25-30.
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