IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0089898
(2006-03-02)
|
등록번호 |
US-7785563
(2010-09-20)
|
우선권정보 |
KR-10-2005-0097161(2005-10-14) |
국제출원번호 |
PCT/KR2006/000720
(2006-03-02)
|
§371/§102 date |
20080909
(20080909)
|
국제공개번호 |
WO07/043731
(2007-04-19)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Korea Advanced Institute of Science and Technology
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
10 |
초록
▼
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
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.
대표청구항
▼
The invention claimed is: 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 o
The invention claimed is: 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: RSiX3 or R2SiX2 or R3SiX (1) RP(═O)X3 or R2P(═O)X2 or R3P(═O)X (2) wherein X represents a hydrolysable group selected from the group consisting of hydroxyl, halide and alkoxy, and wherein R represents a C2-30 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. 2. The method according to claim 1, wherein the method comprises the following steps:(a) adding said meso-SDA into a gel composition of synthesizing a molecular sieve containing a micro-SDA, a silicon source and an aluminum source;(b) subjecting the resulted material obtained in the above step (a) to crystallization by a hydrothermal reaction, a microwave reaction, or a dry-gel synthesis; and (c) removing selectively organic materials from the resulted material obtained in the above step (b) by calcinating or chemical treatment. 3. The method according to claim 1, wherein said silica precursor organo-functionalized with an organosilane or organophosphonic acid is prepared by reacting an organosilane having formula (1) or an organophosphonic acid having formula (2) with a silica precursor selected from the group consisting of silicate ion, colloidal fumed silica, silica gel and precipitated silica. 4. The method according to claim 1, wherein said gel composition for the synthesis of a molecular sieve further contains a meso-SDSA (meso-Structure Directing Supplement Agent) which is selected from the group consisting of alcohol, surfactants, high molecular-weight materials, biomaterials and inorganic salts. 5. The method according to claim 1, wherein said micro-SDA is selected from the group of consisting of tetramethylammonium, tetraethylammonium and tetrapropylammonium. 6. The method according to claim 1, wherein said meso-SDA is used in an amount of 0.01 about 0.50 mol %, based on the amount of SiO or its precursor. 7. The method according to claim 1, wherein said molecular sieve has the same chemical composition with aluminosilicate, silicate, titanosilicate, aluminophosphate, silicoaluminophosphate or borosilicate.
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