Synthesis of Ti-containing MCM41 using Ti(SO_4)_2 as Ti source

摘要

A simple and economic method was developed to synthesize Ti-containing MCM41 from titanium sulphate as Ti source, sodium metasilicate as Si source and cetyltrimethylammonium bromide (CTABr) as template. The resultant materials were characterized by using XRD, FT-IR, N_2 adsorption isotherms, HRTEM, ICP, and LRS techniques. It was revealed that the atoms of titanium were incorporated into the framework of MCM41 for the samples with Ti/Si mol ratios below 1/20. Small amount of titanium oxides that highly dispersed onto the wall of MCM41 were detected while the Ti/Si mol ratios up to 1/10. The prepared materials exhibited high catalytic activity in the oxidation of aromatic compounds.