Title:
AFI-CHA MIXED CRYSTAL MOLECULAR SIEVE AND NH 3-SCR CATALYST USING SAME AS CARRIER, AND PREPARATION METHODS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/228652
Kind Code:
A1
Abstract:
Disclosed are an AFI-CHA mixed crystal molecular sieve and an NH 3-SCR catalyst using the same as a carrier, and the preparation methods therefor. The AFI-CHA mixed crystal molecular sieve is composed of an AFI-type SAPO-5 molecular sieve and a CHA-type SAPO-34 molecular sieve, and the crystal grains are mixed crystal grains of AFI and CHA. The mixed crystal molecular sieve is synthesized by a hydrothermal synthesis method, and can be obtained by changing the structure-directing agent, the heating rate and the roasting temperature in a preparation process. Copper is loaded on the basis of the mixed crystal molecular sieve to prepare copper-based NH3-SCR catalyst and corresponding monolithic catalyst; and the mixed crystal molecular sieve significantly improves the catalytic activity and hydrothermal stability of the catalyst.
Inventors:
XU HAIDI (CN)
LIN QINGJIN (CN)
CHEN YAOQIANG (CN)
WANG YUN (CN)
FENG XI (CN)
WANG JIANLI (CN)
ZHAO MING (CN)
JIAO YI (CN)
LIN QINGJIN (CN)
CHEN YAOQIANG (CN)
WANG YUN (CN)
FENG XI (CN)
WANG JIANLI (CN)
ZHAO MING (CN)
JIAO YI (CN)
Application Number:
PCT/CN2020/089513
Publication Date:
November 19, 2020
Filing Date:
May 10, 2020
Export Citation:
Assignee:
UNIV SICHUAN (CN)
International Classes:
B01J29/85; B01D53/94
Domestic Patent References:
| WO2011061835A1 | 2011-05-26 |
Foreign References:
| CN110227540A | 2019-09-13 | |||
| CN104828842A | 2015-08-12 | |||
| CN107744830A | 2018-03-02 | |||
| CN101983103A | 2011-03-02 | |||
| CN106607087A | 2017-05-03 |
Attorney, Agent or Firm:
CHENGDU TIANSHANGMING PATENT AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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