IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0857738
(1992-03-26)
|
|
발명자
/ 주소 |
- Lachman Irwin M. (Corning NY) Patil Mallanagouda D. (Corning NY) Socha
- Jr. Louis S. (Painted Post NY) Swaroop Srinivas H. (Painted Post NY) Wusirika Raja R. (Painted Post NY)
|
| 출원인 / 주소 |
- Corning Incorporated (Corning NY 02)
|
| 인용정보 |
피인용 횟수 :
51 인용 특허 :
0 |
초록
▼
A catalyst system for the oxidation of hydrocarbons, carbon monoxide, and the reduction of nitrogen oxides is provided. The unique synergy of the catalyst system, a combination of molecular sieves and noble metals, provides a system that partially or entirely replaces the need for rhodium as a catal
A catalyst system for the oxidation of hydrocarbons, carbon monoxide, and the reduction of nitrogen oxides is provided. The unique synergy of the catalyst system, a combination of molecular sieves and noble metals, provides a system that partially or entirely replaces the need for rhodium as a catalyst in three way catalyst systems.
대표청구항
▼
A three way catalyst (TWC) system that can be used for the removal of hydrocarbons, carbon monoxide and oxides of nitrogen from waste gas, the TWC system comprising a substrate supporting a catalyst, the catalyst comprising a washcoat consisting of: (1) zeolite selected from the group consisting of
A three way catalyst (TWC) system that can be used for the removal of hydrocarbons, carbon monoxide and oxides of nitrogen from waste gas, the TWC system comprising a substrate supporting a catalyst, the catalyst comprising a washcoat consisting of: (1) zeolite selected from the group consisting of ZSM zeolite and silicalite, the zeolite mixed with high surface area oxide, and (2) salt solution of a noble metal, the noble metal selected from the group consisting of platinum and palladium, the washcoat being characterized in that substantially all of the noble metal is sited on the high surface area oxide such that both the noble metal and the zeolite are available to catalyze reactants in the waste gas most suited for their respective properties. The TWC system of claim 1, wherein the substrate is a ceramic honeycomb selected from a group consisting of: cordierite, mullite, alumina, lithium aluminosilicate, titania, zircon, feldspar, quartz, fused silica, clay, aluminum titanate solid solution, silicate, aluminate, zirconia, spinel, glass, glass-ceramic and a combination thereof. The TWC system of claim 1, wherein surface area oxide is selected from the group consisting of hydrolyzed aluminum alkoxide, aluminum chlorhydrate, silica, alumina, zirconia, spinel, silica and titania.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.