Patent ID: 6770258
Filing Date: 2004-08-03
Classification: B01J,C01B,C10G

Abstract:
A method for forming the mesoporous aluminosilicate composition which comprises:(a) reacting a sodium silicate solution at basic pH with a sodium aluminate solution at silicon to aluminum ratio between about 1000 to 1 and 1 to 1 and aging the mixture at 25 to 200Â° C. for periods of up to 48 hours to form zeolite seeds; (b) diluting the reaction mixture from (a) with water and reacting the resultant mixture with a surfactant containing an onium ion; (c) acidifying the mixture obtained from (b) with a protonic acid to obtain a mixture with an OHâˆ’/(Si+Al) ratio in the range of 0.10 to 10; (d) aging the mixture from step (c) at a temperature between 80 and 200Â° C. to obtain a precipitate of the composition; and (e) separating the composition from the mixture of step (d).