Patent ID: 7785563
Filing Date: 2010-08-31
Classification: B01J,C01B

Abstract:
1. A method of preparing a microporous crystalline molecular sieve materials having mesoporous skeleton, characterized in that a meso-SDA (structural-directing agent) is added into a gel composition for the synthesis of a molecular sieve containing a micro-SDA to form an organic-inorganic composite gel structure, wherein said meso-SDA is selected from the group consisting of an organosilane having the following formula (1), an organophosphonic acid having the following formula (2), and a silica precursor organo-functionalized with said organosilane or organophosphonic acid: wherein X represents a hydrolysable group selected from the group consisting of hydroxyl, halide and alkoxy, and wherein R represents a C 2-30 alkyl or alkenyl group, wherein the alkyl group may have a substituent selected from the group consisting of hydroxyl, halide, thiol, amino, cyano, nitro, amide, carboxylic acid, sulphonic acid, glycidyl, aryl and heteroaryl and may have 1 to 3 heteroatoms selected from the group consisting of N, O, S and Si in alkyl chain.