Synthesis, Characterization and Catalytic Oxidation Properties of Mesoporous Ti-HMS-1 Containing MFI Structure Unites

doi:10.3724/SP.J.1077.2007.00943

Abstract

Abstract: Ti-incorporated Ti-HMS-1 mesoporous molecular sieve was synthesized at ambient temperature by the assembly of
TS-1 precursors using dodecylamine (DDA) surfactant as template agent, and characterized by XRD, TEM, nitrogen adsorption, FT-IR, UV-Vis diffuse reflectance. The results show that Ti-HMS-1 prepared consists of the mesoporous structure with ''worm-like'' holes and MFI structure unites, and the Ti atoms are incorporated into the framework. After treated in the boiling water at 373K for 50h, Ti-HMS-1 remains most of the mesoporous structures, which indicates Ti-HMS-1 has higher hydrothermal stability as compared with Ti-HMS. For the oxidation of styrene using H₂O₂ as oxidant, the catalytic performance of Ti-HMS-1 is higher obviously than that of Ti-HMS or TS-1. The selectivity of Ti-HMS-1 to products is similar to that of Ti-HMS.

Key words: Ti-HMS-1 molecular sieve, synthesis, characterization, oxidation of styrene

CLC Number:

O643

MA Qian-Zhi,GUO Yang-Long,WANG Yan-Qin,GUO Yun,ZHANG Zhi-Gang,. Synthesis, Characterization and Catalytic Oxidation Properties of Mesoporous Ti-HMS-1 Containing MFI Structure Unites[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00943.

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Synthesis, Characterization and Catalytic Oxidation Properties of Mesoporous Ti-HMS-1 Containing MFI Structure Unites

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