MA Shu-qi, LI Gang, WANG Xiang-sheng, JIN Chang-zi, LIU Min, GUO Xin-wen. 钛硅分子筛催化1-丁烯环氧化研究[J]. Journal of Fuel Chemistry and Technology, 2005, 33(04): 509-512.
Citation:
MA Shu-qi, LI Gang, WANG Xiang-sheng, JIN Chang-zi, LIU Min, GUO Xin-wen. 钛硅分子筛催化1-丁烯环氧化研究[J]. Journal of Fuel Chemistry and Technology, 2005, 33(04): 509-512.
MA Shu-qi, LI Gang, WANG Xiang-sheng, JIN Chang-zi, LIU Min, GUO Xin-wen. 钛硅分子筛催化1-丁烯环氧化研究[J]. Journal of Fuel Chemistry and Technology, 2005, 33(04): 509-512.
Citation:
MA Shu-qi, LI Gang, WANG Xiang-sheng, JIN Chang-zi, LIU Min, GUO Xin-wen. 钛硅分子筛催化1-丁烯环氧化研究[J]. Journal of Fuel Chemistry and Technology, 2005, 33(04): 509-512.
Department of Catalytical Chemistry and Engineering, Dalian University and Technology, Dalian 116012, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
1-Butylene epoxidation was catalyzed by microporous titanosilicate molecular sieves TS-1 synthesized by different methods and mesoporous titanosilicate molecular sieves Ti-HMS, using dilute hydrogen peroxide solution as oxidant. The effect of the Si/Ti molar ratio of the catalyst TS-1 and Ti-HMS on their performance was investigated. Conventional TS-1 has smaller crystal size and higher activity than that of TS-1 synthesized by using TPABr as template or the method of gas-solid phase. The TS-1 synthesized by using TPABr as template exhibits the highest selectivity to 1, 2-epoxybutane (BO). With the increase of Ti content in molecular sieves, the conversion of H2O2 increases. The catalytic activity of mesoporous Ti-HMS is lower than that of TS-1, and large amount of H2O2 is decomposed in 1-butylene epoxidation. The primary reason for low activity of Ti-HMS in 1-butylene epoxidation is that Ti-HMS has poorer hydrophobicity property than TS-1.