Use of mixed oxides as oxygen storage components
US-2017021340-A1 · Jan 26, 2017 · US
Oxygen storage materials
US10052615B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10052615-B2 |
| Application number | US-201415039893-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 25, 2014 |
| Priority date | Nov 29, 2013 |
| Publication date | Aug 21, 2018 |
| Grant date | Aug 21, 2018 |
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Abstract
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The present invention is concerned with oxygen storage materials. In particular an oxygen storage material (OSM) is proposed which comprises a certain mixed oxide as the oxygen storage component. The oxygen storage material can be used in conventional manner in three-way catalysts or NOx-storage catalysts for example.
First claim
Opening claim text (preview).
The invention claimed is: 1. Catalytic oxygen storage material comprising a catalytically active metal selected from the group consisting of Cu, Ag, Au, Pt, Pd, Rh, Ru, Ir and mixtures thereof and further a binary, ternary or higher mixed oxide consisting of the formula (M1) a (M2) b (M3) c (M4) d (M5) e (M6)f(M7) g O x wherein 0≤a, b, c, d, e, f, g≤20 and x adapts a value to compensate the positive charge originating from the metal cations M1-M7 being selected from the group consisting of Fe, Mn, V, W, Nb, Ta, and Mo; and wherein the mixed oxide is supported on a high surface area refractory metal oxide support having a surface area of at least 50 m 2 /g. 2. Oxygen storage material according to claim 1 , wherein a is from >0-20, b is from >0-20, c is from 0-5 and d, e, f, g is from 0-5. 3. Oxygen storage material according to claim 1 , wherein M1-M5 are selected from the group consisting of Fe, Mn, V, Nb and W. 4. Oxygen storage material according to claim 1 , wherein the storage capacity of the material is at least 8.000 μg O 2 /mmol oxygen storage component. 5. Three-way catalyst, cDPF, oxidation catalyst or NOx-storage catalyst comprising the oxygen storage material according to claim 1 . 6. Exhaust treatment system comprising one or more of the catalysts of claim 5 . 7. Process for treating exhaust gas from combustion engines, wherein the exhaust gas is brought into contact with one or more of the catalysts of claim 5 under conditions effective to mitigate noxious pollutants in the exhaust.
Assignees
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Classifications
- B01J23/898Primary
with vanadium, tantalum, niobium or polonium · CPC title
O2-storage component incorporated in the catalyst · CPC title
Manganese · CPC title
Vanadium · CPC title
Alumina · CPC title
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- What does patent US10052615B2 cover?
- The present invention is concerned with oxygen storage materials. In particular an oxygen storage material (OSM) is proposed which comprises a certain mixed oxide as the oxygen storage component. The oxygen storage material can be used in conventional manner in three-way catalysts or NOx-storage catalysts for example.
- Who is the assignee on this patent?
- Umicore Ag & Co Kg
- What technology area does this patent fall under?
- Primary CPC classification B01J23/898. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 21 2018 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).