r掺杂硼铝酸盐PKU-5催化氧化苯甲硫醚的研究

Sulfoxide is an important organic intermediate in the field of fine chemicals synthesis. In this paper, Cr-PKU-5 aluminoborates with different Cr content were synthesized by roasting Cr-PKU-1 at higher temperature, and their catalytic performance were investigated with the oxidation of benzoyl sulfide to sulfoxide under the different reaction paremeters, such as Cr doping content, the amount of hydrogen peroxide, reaction temperature, solvents type and reaction interval. The experimental results indicate the optimal conversion (63.2%) and selectivity to sulfoxide (90.6%) were achived when reaction was performed under the following paramters: 338 K reaction temperature, 10 atom% Cr, substrate/oxidant=1:4, and DMF solvent.