Molecular sieve ssz-95
US-2015336091-A1 · Nov 26, 2015 · US
Oxidation catalyst for treating a natural gas emission
US2016236147A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016236147-A1 |
| Application number | US-201614996288-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 15, 2016 |
| Priority date | Feb 13, 2015 |
| Publication date | Aug 18, 2016 |
| Grant date | — |
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Abstract
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A catalytic material for treating an exhaust gas produced by a natural gas engine, which catalytic material comprises a molecular sieve and a platinum group metal (PGM) supported on the molecular sieve, wherein the molecular sieve has a framework comprising silicon, oxygen and optionally germanium, and has a content of heteroatom T-atoms is ≦about 0.20 mol %.
First claim
Opening claim text (preview).
1 . An oxidation catalyst for treating an exhaust gas produced by a natural gas (NG) engine, which oxidation catalyst comprises a catalytic material for treating the exhaust gas and a substrate, which catalytic material comprises a molecular sieve and a platinum group metal (PGM) supported on the molecular sieve, wherein the molecular sieve has a framework comprising silicon, oxygen and optionally germanium, and has a content of heteroatom T-atoms of ≦about 0.20 mol %. 2 . An oxidation catalyst according to claim 1 , wherein the catalytic material has a content of heteroatom T-atoms of ≦about 0.17 mol %. 3 . An oxidation catalyst according to claim 1 , wherein the heteroatom is selected from the group consisting of aluminium (Al), boron (B), gallium (Ga), titanium (Ti), zinc (Zn), iron (Fe), vanadium (V) and combinations of any two or more thereof. 4 . An oxidation catalyst according to claim 1 , wherein the framework comprises germanium in an amount of ≦about 10 mol %. 5 . An oxidation catalyst according to claim 1 , wherein the framework consists essentially of silicon, oxygen and heteroatom T-atoms. 6 . An oxidation catalyst according to claim 1 , wherein the molecular sieve does not have a content of heteroatom T-atoms. 7 . An oxidation catalyst according to claim 1 , wherein the molecular sieve is a zeolite. 8 . An oxidation catalyst according to claim 1 , wherein the molecular sieve has a SAR of ≧1200. 9 . An oxidation catalyst according to claim 1 , wherein the catalytic material has a total amount of the platinum group metal (PGM) of 0.01 to 30 wt %. 10 . An oxidation catalyst according to claim 1 , wherein the platinum group metal is selected from the group consisting of palladium (Pd), and a combination of platinum (Pt) and palladium (Pd). 11 . An oxidation catalyst according to claim 1 , wherein the catalytic material has a total amount of palladium of 0.1 to 20 wt %. 12 . An oxidation catalyst according to claim 1 , wherein the molecular sieve is in a particulate form and has a D50 of 0.1 to 20 microns, 13 . An oxidation catalyst according to claim 1 , wherein the substrate is a flow-through substrate or a filtering substrate. 14 . An oxidation catalyst according to claim 1 , wherein the catalytic material is dispersed in the substrate. 15 . An exhaust system comprising an oxidation catalyst according to claim 1 . 16 . An exhaust system according to claim 15 further comprising a sulfur trap. 17 . An exhaust system according to claim 16 comprising a first sulfur trap and a second sulfur trap, wherein the first sulfur trap and the second sulfur trap are arranged in parallel. 18 . An apparatus comprising an engine and an exhaust system according to claim 15 . 19 . An apparatus according to claim 18 , wherein the engine is a natural gas engine. 20 . An apparatus according to claim 19 , wherein the engine is a lean burn internal combustion engine.
Assignees
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Classifications
Beta zeolites · CPC title
Zeolite Beta · CPC title
of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively · CPC title
by catalytic processes · CPC title
Ceramic multi-channel monoliths, e.g. honeycombs · CPC title
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- What does patent US2016236147A1 cover?
- A catalytic material for treating an exhaust gas produced by a natural gas engine, which catalytic material comprises a molecular sieve and a platinum group metal (PGM) supported on the molecular sieve, wherein the molecular sieve has a framework comprising silicon, oxygen and optionally germanium, and has a content of heteroatom T-atoms is ≦about 0.20 mol %.
- Who is the assignee on this patent?
- Johnson Matthey Plc
- What technology area does this patent fall under?
- Primary CPC classification B01D53/944. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Aug 18 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).