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题名: Hydrothermal synthesis of V-MCM-41 mesoporous molecular sieves and synthesis mechanism
作者: Xu Junqiang;  Chu Wei;  Chen Muhua;  Luo Shizhong;  Zhang Tao
关键词: MCM-41 mesoporous molecular sieve ;  vanadium ;  hydrothermal synthesis ;  mechanism ;  characterization
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2006-08-01
卷: 27, 期:8, 页:671-677
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 ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: V-MCM-41 mesoporous materials were synthesized by the hydrothermal method using cetyltrimethylammonium bromide (CTAB) as the template and industrial Na2O center dot 3.3SiO(2) as the silica source, which is much cheaper than conventional organic precursors. The effects of synthesis conditions on the structure of V-MCM-41 were investigated and the synthesis mechanism was studied by N-2 adsorption. The results indicated that many factors affected the synthesis, including the molar ratio of Si source and CTAB, pH value, crystallization temperature and time, aging time, calcination atmosphere, and feeding mode. The most important factors involved crystallization temperature, pH value, and molar ratio of Si to CTAB. X-ray diffraction results showed that the samples had a highly ordered hexagonal structure. Fourier transform infrared and ultraviolet visible spectra provided strong evidence that most vanadium ions were incorporated into the framework of mesoporous siliceous MCM-41.
关键词[WOS]: CATALYTIC-PROPERTIES ;  MCM-41 ;  VANADIUM ;  EPOXIDATION ;  STABILITY ;  SILICA ;  IRON
语种: 英语
WOS记录号: WOS:000240609300007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140254
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.Sichuan Univ, Coll Chem Engn, Chengdu 610065, Sichuan, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Xu Junqiang,Chu Wei,Chen Muhua,et al. Hydrothermal synthesis of V-MCM-41 mesoporous molecular sieves and synthesis mechanism[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(8):671-677.
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