Preparation process of selective reduction catalyst for lean-burn gasoline motor car exhausted gas nitrogen oxide
Title：
Preparation process of selective reduction catalyst for lean-burn gasoline motor car exhausted gas nitrogen oxide
Application Number：
 200510086550
Application Date：
 2005/09/30
Announcement Date：
 2006/04/26
Pub. Date：
Publication Number：
 1762585
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 B01J 23/50, B01J 37/025, B01D 53/94
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Kang Shoufang, Li Junhua, Fu Lixin
Key Words：
 lean-burn gasoline motor car, exhausted gas, nitrogen oxide, selective reduction, catalyst
Abstract：
 The preparation method for catalyst to selective reduce nitrogen oxide in tail gas from gasoline vehicle comprises: with quasi-thin diaspore dry powder as material, nitric acid as peptizer and urea as dispersant, grinding to obtain aluminum solution; dipping the 200-800 pores/inch2 cordierite honeycomb ceramic carrier into said solution, taking out to dry and form Al2O3 coat; excessive immersing into silver nitrate solution, taking out to calcine and obtain the product. This catalyst has high catalytic conversion rate to NOx special at low temperature, solves the difficulty that it is hard to remove NOx on oxygen-enriched condition, and has well environmental benefit.
Claim：
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Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







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