Exhaust treatment method and apparatus having particulate filters and scr
US-2024159174-A1 · May 16, 2024 · US
Lean NOx type exhaust gas purifying catalyst
US8992844B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8992844-B2 |
| Application number | US-201213821520-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 6, 2012 |
| Priority date | Apr 28, 2011 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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A lean NOx trap type exhaust gas purifying catalyst having a catalyst noble metal selected from a group consisting of platinum, palladium and rhodium, an inorganic oxide that carries the catalyst noble metal, and at least one NOx adsorbent one selected from a group of magnesium, barium, sodium, potassium and cesium. The inorganic oxide carrying palladium containing cerium in a CeO2-equivalent quantity in a range of 1 to 20 wt %, and at least one of aluminum and zirconium.
First claim
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The invention claimed is: 1. An exhaust gas cleaning system comprising: a lean NOx trap type exhaust gas purifying catalyst having a catalyst noble metal selected from a group consisting of platinum, palladium and rhodium, an inorganic oxide that carries the catalyst noble metal, and at least one NOx adsorbent one selected from a group of magnesium, barium, sodium, potassium and cesium, the inorganic oxide carrying palladium containing cerium in a CeO2-equivalent quantity in a ran…
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- B01D53/9422Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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- What does patent US8992844B2 cover?
- A lean NOx trap type exhaust gas purifying catalyst having a catalyst noble metal selected from a group consisting of platinum, palladium and rhodium, an inorganic oxide that carries the catalyst noble metal, and at least one NOx adsorbent one selected from a group of magnesium, barium, sodium, potassium and cesium. The inorganic oxide carrying palladium containing cerium in a CeO2-equivalent q…
- Who is the assignee on this patent?
- Naito Tetsuro, Hanaki Yasunari, Nakamura Masanori, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification B01D53/9422. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).