Patent Number: 7,785,563

Title: Method of the preparation of microporous crystalline molecular sieve possessing mesoporous frameworks

Abstract: The present invention relates to a method of preparing a microporous crystalline molecular sieve having mesoporous skeleton, comprising following steps: (a) adding a meso-SDA (meso-Structure Directing Agent) into a gel composition of synthesizing molecular sieve, (b) subjecting the mixture obtained in the above step (a) to crystallization by a hydrothermal reaction, a microwave reaction, a dry-gel synthesis, etc., and (c) removing selectively organic materials from the resulted material obtained in the above step (b) by a calcination or a chemical treatment. Molecular sieve having mesoporous skeleton synthesized by the present invention exhibits, as compared with conventional zeolite, a good molecule diffusion ability and a greatly improved catalytic activity.

Inventors: Ryoo; Ryong (Daejeon, KR), Choi; Minkee (Kangwon, KR)

Assignee: Korea Advanced Institute of Science and Technology

International Classification: C01B 39/04 (20060101)

Expiration Date: 8/31/12018