发明授权
US4963521A Exhaust-gas catalyst with reduced tendency to store sulfur oxides and to
emit hydrogen sulfide and process for preparing the catalyst
失效
具有减少存储硫氧化物并排放硫化氢的倾向的废气催化剂和用于制备催化剂的方法
- 专利标题： Exhaust-gas catalyst with reduced tendency to store sulfur oxides and to emit hydrogen sulfide and process for preparing the catalyst
- 专利标题（中）： 具有减少存储硫氧化物并排放硫化氢的倾向的废气催化剂和用于制备催化剂的方法
-
申请号： US345721申请日： 1989-05-01
-
公开(公告)号： US4963521A公开(公告)日： 1990-10-16
- 发明人: Bernd Engler , Edgar Koberstein , Egbert Lox
- 申请人： Bernd Engler , Edgar Koberstein , Egbert Lox
- 申请人地址： DEX Frankfurt
- 专利权人： Degussa Aktiengesellschaft
- 当前专利权人： Degussa Aktiengesellschaft
- 当前专利权人地址： DEX Frankfurt
- 优先权： DEX3830318 19880907
- 主分类号： B01D53/86
- IPC分类号： B01D53/86 ; B01D53/94 ; B01J23/56 ; B01J23/63
摘要：
A catalyst for purifying the exhaust gases of internal combustion engines by means of oxidation and reduction with a reduced tendency to store sulfur oxides and to emit H.sub.2 S contains active Al.sub.2 O.sub.3 as carrier which is charged with CeO.sub.2 and optionally with ZrO.sub.2 as well as with platinum, and/or palladium, and optionally rhodium and also contains in addition 0.7 to 20% by weight B.sub.2 O.sub.3 relative to Al.sub.2 O.sub.3.