Patent ID: 6096287
Filing Date: 2000-08-01
Classification: B01J,C01B

Abstract:
A process for preparing a crystalline material having a mesoporous structure comprising:(a) dissolving 2 to 10 parts by weight silica or silica in a mixture with metal salts and/or metal alkoxides in 100 parts by weight of 5 to 50% hydrogen fluoride solution,(b) adding the solution of step (a) to a solution of 2 to 10 parts by weight of a cationic surfactant and 20 to 30 parts by weight of concentrated ammonia solution in 100 parts by weight of distilled water to form a mixture,(c) aging said mixture of step (b) at a temperature of 25 to 80.degree. C. for 2 to 3 hours to form a product, and(d) calcining said product of step (c) at a temperature of 500 to 800.degree. C. for 4 to 6 hours to form said mesoporous material.