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1. 发明专利

AU2049592A PORE IMPREGNATED CATALYST DEVICE 未知
公开(公告)号：AU2049592A
公开(公告)日：1993-01-28
申请号：AU2049592
申请日：1992-07-24
申请人： CORNING INCORPORATED
发明人： IRWIN MORRIS LACHMAN , MALLANAGOUDA DYAMANAGOUDA PATIL , SRINIVAS HOSDURG SWAROOP , RAJA RAO WUSIRIKA , PATRICIA ANN BEAUSEIGNEUR
IPC分类号： B01J23/40 , B01J23/56 , B01J23/63 , B01J35/04 , B01J35/10 , B01J37/02 , B01J37/08

2. 发明专利

AU635709B2 CATALYTICALLY ACTIVE MATERIALS 未知
公开(公告)号：AU635709B2
公开(公告)日：1993-04-01
申请号：AU3815089
申请日：1989-07-14
申请人： CORNING INCORPORATED
发明人： IRWIN MORRIS LACHMAN , MALLANAGOUDA DYAMANAGOUDA PATIL , JIMMIE LEWIS WILLIAMS , RAJA RAO WUSIRIKA
IPC分类号： B01D53/86 , B01D53/94 , B01J21/16 , B01J23/30 , B01J23/50 , B01J23/74 , B01J23/745 , B01J23/80 , B01J23/84 , B01J23/847 , B01J23/85 , B01J23/86 , B01J23/89 , B01J29/89 , B01J35/02 , B01J35/04 , B01J37/00 , B01J37/08 , B01J37/14
摘要： This invention is directed to the preparation of articles exhibiting catalytic activity and, in particular, to articles which are exceptionally suitable for catalytically converting gases from organically fueled power plants, internal combustion engines, and other fluid and gaseous catalysis. The inventive articles comprise a unitary composite structure consisting essentially of a catalytically active precious metal and/or a base metal which, the base metals in particular, become catalytically active upon oxidation. The catalysts are integrally combined with a supporting porous sintered structure of metal or ceramic.

3. 发明专利

AU8898991A MULTI-STAGE TWC SYSTEM 未知
公开(公告)号：AU8898991A
公开(公告)日：1992-11-26
申请号：AU8898991
申请日：1991-12-11
申请人： CORNING INCORPORATED
发明人： WILLIAM PETER ADDIEGO , SRINIVAS HOSDURG SWAROOP , JIMMIE LEWIS WILLIAMS , RAJA RAO WUSIRIKA
IPC分类号： B01D53/94 , B01J23/63 , B01J29/44 , B01J29/74 , F01N3/10 , F01N3/28
摘要： Multi-stage catalytic systems and methods are provided for converting NOx, CO, and hydrocarbons in a mixture, to innocuous products. The systems include first and second stages, each with substrate and catalyst. The mixture is contacted with the first stage for conversion of the major portion of the NOx and a portion of the CO and hydrocarbons. The output is contacted with the second stage to for conversion of CO and hydrocarbons. In one system, the first stage catalyst consists essentially of rhodium and a zeolite; the second stage catalyst comprises a noble metal including platinum and/or palladium, and a support. The mixture has a mole ratio of reducing to oxidizing agents of at least 0.8. Low ammonia is generated. In another system, the first stage substrate is made of material capable of being heated to at least 150 C in no more than about 20 seconds, has heating means for doing same, and is at this temperature at least part of the time of contact with the mixture. The first stage catalyst comprises a support and rhodium with optionally platinum and/or palladium. The second stage catalyst comprises a support, and platinum and/or palladium, and optionally rhodium. Most of the rhodium is in the first stage; most of the platinum and/or palladium is in the second stage. At least 70% by volume of the NOx, CO, and hydrocarbons is converted. The weight ratio of Pt and/or Pd:Rh in each system is at least about 15:1.

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