METHOD FOR MODIFYING TITANIUM SILICON MOLECULAR SIEVES

摘要

The present invention belongs to the technical field of inorganic chemical synthesis, and relates to a method for modifying titanium silicon molecular sieves. The method is characterized in firstly pre-treating TS-1, then modifying the pre-treated TS-1 with a mixed liquid containing TPAOH and metal salts, and finally post-treating the modified TS-1. The method for modifying titanium silicon molecular sieves in the present invention is widely applicable, suitable for TS-1 molecular sieves synthetized by a variety of methods, especially TS-1 molecular sieves synthetized by an inexpensive system, and can improve the catalytic performance of TS-1 molecular sieves for propylene epoxidation reactions both in the gas phase and the liquid phase.