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学科主题: 物理化学
题名: Simple synthesis of mesoporous TiO2 and its application for methanol selective oxidation to dimethoxymethane
作者: Zhan ES(展恩胜) ;  Liu JL(刘俊龙) ;  Chen JL(陈俊利) ;  Huang XM(黄秀敏) ;  Shen WJ(申文杰)
会议名称: the 14th International Congress on Catalysis
会议日期: 2008-7-13
出版日期: 2008-07-13
会议地点: 韩国
其他题名: 介孔TiO2的合成及其在甲醇氧化制二甲氧基甲烷反应中的应用
通讯作者: Wenjie Shen
部门归属: 五室
主办者: the international association of catalysis societies and the Korean institute of chemical engineers
摘要: Mesoporous TiO2 was prepared by hydrolysis of Ti(OBu)4 without template. The material was further used to support VOx species as effective catalyst for methanol selective oxidation-condensation to dimethoxymethane (DMM). XRD patterns of both the as prepared TiO2 material and the VOx/TiO2 catalyst show pure anatase phase, but no V2O5 diffraction peaks even for 20% V2O5 loading was detected in the final catalyst. N2 adsorption-desorption isotherms of both samples displayed type Ⅳ isotherms with H2-like hysteresis loop,indicating the presence of mesoporous structure. The BET surface areas of the mesoporous TiO2 and the VOx/TiO2 catalyst are 290m2/g and 126m2/g, respectively, and the pore size are 2-4nm and 4-15nm. When used for methanol oxidation-condensation, the VOx/TiO2 catalyst showed 55% conversion of methanol and 85% selectivity of dimethoxymethane (DMM). This high yield of DMM (47%) could be attributed to a combined effect of the high surface area of meso-structured TiO2 which leads to a high dispersion of VOx species and the modification with Ti(SO4)2 for generating suitable acidic sites.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/112892
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Zhan ES,Liu JL,Chen JL,et al. Simple synthesis of mesoporous TiO2 and its application for methanol selective oxidation to dimethoxymethane[C]. 见:the 14th International Congress on Catalysis. 韩国. 2008-7-13.
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