Abstract
HPW–MCM-41 mesoporous materials were firstly prepared via introducing 12-tungstophosphoric acid (HPW) into MCM-41 with an open synthesis process. The characterization results indicated that the materials retained the mesoporous structure of MCM-41 and bulk HPW was highly dispersed into MCM-41. Catalytic tests showed that HPW–MCM-41 exhibited good catalytic properties for the oxidation of benzaldehyde to benzoic acid with aqueous hydrogen peroxide solution, in the absence of any organic solvent and co-catalysts. The sample containing 10wt% HPW with larger surface area and pore volume was found to be more active than the others under the same reaction conditions.
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