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Indexed by:会议论文

Date of Publication:2001-01-01

Included Journals:Scopus

Volume:135

Page Number:165-

Abstract:Titanium silicalite (TS-1) containing trace aluminum was successfully synthesized using TPABr as template and silicon sol as silicon source. The synthesized TS-1 exhibited high activity and low selectivity for propylene oxide (PO) in the epoxidation of propylene with dilute H202. PO selectivity of about 90% was obtained by adjusting the pH value of the reaction mixture. However, extra amount of basic substance would make the utilization and the conversion of H202 decrease. The utilization of H202 increased after acid treatment for the low Si/Ti ratio TS-1, but the utilization of H202 remained unchanged for the high Si/Ti ratio TS-1 in the epoxidation of propylene. The as-synthesized TS-1 calcined between 540  C and 900  C showed high activity and thermal stability. This is an abstract of a paper presented at the 13th International Zeolite Conference (Montpellier, France 7/8-13/2001).