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《Chinese Journal of Catalysis》 2006-09
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Synthesis of TS-1 with High Catalytic Performance Using Inorganic SiO_2-TiO_2 Precursor

ZHANG Haijiao, LIU Yueming*, HE Mingyuan, WU Peng*(Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China)  
The inorganic SiO_2-TiO_2 precursor having Si-O-Ti bonds similar to those present in the titanium silicalite (TS-1) molecular sieve was prepared through spontaneous dispersion of Ti(SO_4)_2 on amorphous porous silica by thermal treatment. The precursor was used as the silica and titanium sources to synthesize TS-1 using tetrapropylammonium hydroxide as the template under hydrothermal crystallization conditions. Characterization by X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy indicated that the TS-1 sample with MFI structure was well crystallized and the Ti atoms were successfully incorporated into the framework. The catalytic activity of TS-1 for the hydroxylation of phenol with dilute hydrogen peroxide showed that the treatment temperature of the SiO_2-TiO_2 precursor obviously influenced the catalyst performance, and the proper treatment temperature was about 450 ℃.
【Fund】: 新世纪优秀人才支持计划;; 上海市浦江人才计划;; 国家自然科学基金(20473027);; 上海市科委(05DZ22306);; 国家重点基础研究发展计划(973计划)(2006CB202508);; 高等学校博士学科点专项科研基金(20050269013);; 华东师范大学2006年优秀博士研究生培养基金资助项目.
【CateGory Index】: O643.36
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