Method for preparing mcm-41-type catalyst

A method for preparing an MCM-41-type catalyst, comprising the steps of:

• (a) mixing tetraethoxysilane, cetyltrimethylammonium bromide, a metal compound, sulfonated tripropylene glycol methyl ether, sodium hydroxide and water, such that the cetyltrimethylammonium bromide and the sulfonated tripropylene glycol methyl ether form a micelle template, thereby obtaining a mixture solution containing the micelle template, the metal compound being present in an amount ranging from 0.03 mole to 0.10 mole based on 1.0 mole of the tetraethoxysilane, the sulfonated tripropylene glycol methyl ether being present in an amount ranging from 0.1 mole to 0.3 mole based on 1.0 mole of the cetyltrimethylammonium bromide;
• (b) adjusting a pH value of the mixture solution to range from 9.5 to 10.5, such that the metal compound of step (a) in the mixture solution is converted to a metal hydroxide compound which precipitates from the mixture solution, thereby obtaining a colloidal solution containing the metal hydroxide compound, the tetraethoxysilane of step (a), and the micelle template of step (a);
• (c) subjecting the colloidal solution to a heating treatment, such that the tetraethoxysilane of step (a) is hydrolyzed to form an ethoxy group-containing silicon hydroxide, and such that the ethoxy group-containing silicon hydroxide and the metal hydroxide compound of step (b) self-assemble to cover the micelle template of step (a), thereby forming a catalyst precursor;
• (d) subjecting the catalyst precursor to a washing process until a pH value of a washing liquid generated by the washing process ranges from 7.0 to 7.5, so as to obtain a washed catalyst precursor;
• (e) subjecting the washed catalyst precursor to a drying treatment so as to obtain a dried catalyst precursor;
• and
• (f) subjecting the dried catalyst precursor to a calcination treatment conducted at a temperature ranging from 300° C. to 500° C., so as to remove an organic substance containing the micelle template of step (a) from the dried catalyst precursor, thereby obtaining the MCM-41-type catalyst.