AN IMPROVED PROCESS FOR PREPARATION OF ACTIVE HEXAGONAL MESOPOROUS SILICA CATALYST

摘要

The present invention provides an improved process for preparation of active hexagonal mesoporous silica catalyst which comprises, preparing an aqueous mixture of a silica source, an organic solvent, an organic template and the cation containing species which is desired to substitute "si" isomorphously in the final product, under stirring conditions to obtain the hydrolyzed silica precursor by known method and further stirring to get homogeneous mixture, subjecting this homogenous mixture to a source of microwave radiation for a period ranging from 1 to 30 min, separating the solid from the reaction mixture by conventional methods, washing the solid thoroughly by an organic solvent, drying the solid at a temperature in the range 40 to 1200c, calcining the solid for a period ranging between 3 to 24 hours to obtain the said product, impregnating the calcined solid product using chloroplatinic acid as platinum source by conventional method .