公开(公告)号：US20240116033A1

公开(公告)日：2024-04-11

申请号：US18539373

申请日：2023-12-14

申请人： TIANJIN RESEARCH INSTITUTE FOR WATER TRANSPORT ENGINEERING, M.O.T.

发明人： Mingyu GUO ,  Yidan HUANG ,  Boqun LIU ,  Shaoping CUI ,  Shipei DONG ,  Siqi CHEN ,  Bin LIU ,  Yingjie ZHAO ,  Fang LIN ,  Zhonghua TIAN ,  Junjie ZHAO ,  Wei YE ,  Yanjie WEI ,  Zhipeng ZHANG

IPC分类号： B01J23/00 ,  B01D53/94 ,  B01J35/57 ,  B01J37/00 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  F01N3/20 ,  F01N3/28

CPC分类号： B01J23/002 ,  B01D53/9418 ,  B01J35/57 ,  B01J37/0018 ,  B01J37/0213 ,  B01J37/0236 ,  B01J37/04 ,  B01J37/08 ,  F01N3/2066 ,  F01N3/2803 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20776 ,  B01D2255/40 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2258/012 ,  B01J2523/47 ,  B01J2523/55 ,  B01J2523/69 ,  F01N2330/30 ,  F01N2370/02

摘要： The present invention relates to the technical field of catalyst preparation, disclosing a preparation method and application of a coated vanadium-tungsten-titanium oxide monolithic SCR catalyst. The method includes the steps of mixing a vanadium oxide precursor, a tungsten oxide precursor, titanium dioxide, an inorganic adhesive, an organic adhesive and a macromolecular surfactant with deionized water and stirring them to obtain a thick liquid; adding a pH adjuster to the thick liquid to make its pH 1.5-4.5; impregnating a cordierite honeycomb carrier in the thick liquid to obtain a preliminarily-impregnated catalyst and dried and calcined the preliminarily-impregnated catalyst to obtain a finished catalyst. The method has advantages such as simple operation, easy repetition and short time-consuming, so it can be applied to exhaust gas post-treatment of a marine diesel engine, and provide a good choice for catalysts used to denitrify medium and high temperature exhausted gas from marine engines.