Onestep preparation of
Mo-containing mesoporous composite and its catalytic performance

High Mo loading MoSiO_x mesoporous composite was synthesized in strongly alkaline media with addition of HAcac. XRD, N₂ adsorption-desorption, ICP-AES as well as Py-FTIR were used for characterization. The results show that MoSiOx composite possess regular pore structure, large pore size, very large pore volume and high specific surface area. Mo species is highly distributed in MoSiO_x with a loading higher than 6.3%. The acidic sites of L types contribute to the medium strong to strong acidity of MoSiO_x. Results of catalytic performances show that MoSiO_x has high diesel HDS activity, and the sulfur content in the treated diesel product is lower than 10 ×10^-6. Both NaOH and HAcac are key factors for MoSiO_x synthesis, and the amount of NaOH and HAcac adding should be controlled strictly.