Subject Area物理化学
Simple synthesis of mesoporous TiO2 and its application for methanol selective oxidation to dimethoxymethane
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); Wenjie Shen
Conference Namethe 14th International Congress on Catalysis
Conference Date2008-7-13
Conference Place韩国
Alternative Title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
Funding Organizationthe international association of catalysis societies and the Korean institute of chemical engineers
AbstractMesoporous 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.
Document Type会议论文
Corresponding AuthorWenjie Shen
Recommended Citation
GB/T 7714
Zhan ES,Liu JL,Chen JL,et al. Simple synthesis of mesoporous TiO2 and its application for methanol selective oxidation to dimethoxymethane[C],2008:280/1.
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