The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 2023
Filed:
Sep. 12, 2019
Sinocat Environmental Technology Co., Ltd., Chengdu, CN;
Zhimin Liu, Chengdu, CN;
Xi Feng, Chengdu, CN;
Yanhua Zhang, Chengdu, CN;
Dong Zeng, Chengdu, CN;
Jie Wen, Chengdu, CN;
Ganxue Wu, Chengdu, CN;
Ruifang Wang, Chengdu, CN;
Kuan Wei, Chengdu, CN;
Yun Li, Chengdu, CN;
Qizhang Chen, Chengdu, CN;
Yaoqiang Chen, Chengdu, CN;
Sinocat Environmental Technology Co., Ltd., Sichuan, CN;
Abstract
A method for preparing a molecular sieve SCR (selective catalytic reduction) catalyst and a prepared catalyst therethrough. In the method, several molecular sieves are mixed and modified by transition metal or rare-earth metal via ion exchange, then loaded Fe by equivalent-volume impregnation, and loaded Cu by one or more liquid ion exchange. This present invention, combined with several techniques, such as modification of stable molecular sieve by transition and rare-earth metal, Fe loading by equivalent-volume impregnation and Cu loading by one or more liquid ion exchange, and after through stable and effective modification and loading control, the obtained catalyst material is coated on a carrier substrate via size mixing and coating process to be prepared into an integral catalyst.