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题名: Synthesis of strong acidic mesoporous materials by ultrasonic sol-gel method
作者: Xiong, GX;  Yao, N;  Han, W;  Sheng, SS;  Yang, WS
关键词: sol-gel method ;  mesoporous material ;  platinum ;  strong acidity ;  1-hexene ;  hydrolsomerization
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2005-09-01
卷: 26, 期:9, 页:759-764
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: Mesoporous materials with large pore size are much in demand for the reactions involving large molecules. However, their applications are limited by the weak acidity as compared with that of microporous zeolites. In this paper, a novel method was developed to synthesize strong acidic mesoporous materials. Cheap inorganic salts were used to synthesize Zr- and Ti-modified silica-alumina mesoporous materials and supported Pt electron-acid bifunctional mesoporous materials by ultrasonic sol-gel method without any types of templates or pore-regulating agents. The samples were characterized by pyridine adsorption and desorption, IR spectroscopy, XPS and H-2-TPR. Their catalytic performance was evaluated by using hydroisomerization reaction of 1-hexene. Pyridine adsorption-desorption and IR spectroscopy indicate that these samples have strong surface acidity. The XPS and H-2-TPR results suggest that the interactions between platinum and the supports exist in the samples. Hydroisomerization reaction of 1-hexene shows that the samples have high catalytic activity. It is concluded that their strong surface acidity results from the interactions between metal and the supports.
关键词[WOS]: METAL-OXIDES ;  ALUMINA ;  STABILITY ;  TEMPLATES ;  CATALYSTS ;  1-HEXENE ;  TITANIA
语种: 英语
WOS记录号: WOS:000232474800009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139738
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
2.Hong Kong Univ Sci & Technol, Dept Chem Engn, Kowloon, Hong Kong, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Xiong, GX,Yao, N,Han, W,et al. Synthesis of strong acidic mesoporous materials by ultrasonic sol-gel method[J]. CHINESE JOURNAL OF CATALYSIS,2005,26(9):759-764.
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