CN1876230A - Purification catalyst for natural gas and auto tail gas - Google Patents
Purification catalyst for natural gas and auto tail gas Download PDFInfo
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- CN1876230A CN1876230A CN 200510026527 CN200510026527A CN1876230A CN 1876230 A CN1876230 A CN 1876230A CN 200510026527 CN200510026527 CN 200510026527 CN 200510026527 A CN200510026527 A CN 200510026527A CN 1876230 A CN1876230 A CN 1876230A
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- gas
- tail gas
- porous ceramics
- purification catalyst
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Abstract
The tail-gas purifying catalysis for a natural-gas vehicle comprises the porous ceramic carrier coated active constituent as 20-40g/L CeO2, 1.6-3.2g/L Pd and 0.1-0.5g/L La. Compared to prior art, this invention optimized content of noble metal, and improves oxidation for CH4.
Description
Technical field
The present invention relates to automobile, relate in particular to the automobile that uses gas fuel, particularly a kind of purification catalyst for natural gas and auto tail gas.
Background technology
In the prior art; a large amount of uses along with automobile; vehicle exhaust has caused serious harm to environment for human survival; in order to solve the contradiction between development of automobile and the environmental protection; people begin to use gas-fueled vehicles; but still there is the insufficient tail gas pollution that waits of burning in gas-fueled vehicles, so people have developed the catalyst that can reduce the tail gas pollution of gas-fueled vehicles again.But existing catalyst is not good to the oxidation effectiveness of the methane in the tail gas, causes the tail gas clean-up effect not fully up to expectations.
Summary of the invention
The purpose of this invention is to provide a kind of purification catalyst for natural gas and auto tail gas, described this purification catalyst for natural gas and auto tail gas will solve in the prior art catalyst to the technical problem that oxidation effectiveness is not good, tail gas clean-up is satisfactory for result of the methane in the tail gas.
This purification catalyst for natural gas and auto tail gas of the present invention is made up of porous ceramics carrier and catalytic active component, on described porous ceramics carrier, be coated with catalytic active component, calculate with every liter of porous ceramics carrier, contain the CeO of 20/L～40g/L in the described catalytic active component
2And 1.6g/L～3.2g/L metal Pd.
Further, be coated with on described porous ceramics carrier and also contain metal La in the catalytic active component, calculate with every liter of porous ceramics carrier, the content of described metal La is 0.1g/L～0.5g/L.
The present invention and prior art are compared, and its effect is actively with tangible.The present invention has optimized the content of precious metals pd in catalyst, has improved the oxidation effectiveness of methane greatly.
Description of drawings
Fig. 1 is the graph of a relation of catalyst content of the present invention and methane conversion.
The specific embodiment
A kind of purification catalyst for natural gas and auto tail gas is made up of porous ceramics carrier and catalytic active component, on described porous ceramics carrier, be coated with catalytic active component, on described porous ceramics carrier, be coated with catalytic active component, calculate with every liter of porous ceramics carrier, contain CeO2 and the 1.6g/L～3.2g/L metal Pd of 20/L～40g/L in the described catalytic active component.
Further, be coated with on described porous ceramics carrier and also contain metal La in the catalytic active component, calculate with every liter of porous ceramics carrier, the content of described metal La is 0.1g/L～0.5g/L.
As shown in Figure 1, when the content of precious metals pd was 1.6g/l to 3.2g/l, the conversion ratio of methane conversion almost can be near 100%.
Claims (2)
1. purification catalyst for natural gas and auto tail gas, form by porous ceramics carrier and catalytic active component, on described porous ceramics carrier, be coated with catalytic active component, it is characterized in that: calculate with every liter of porous ceramics carrier, contain the CeO of 20/L～40g/L in the described catalytic active component
2And 1.6g/L～3.2g/L metal Pd.
2. purification catalyst for natural gas and auto tail gas as claimed in claim 1, it is characterized in that: on described porous ceramics carrier, be coated with and also contain metal La in the catalytic active component, calculate with every liter of porous ceramics carrier, the content of described metal La is 0.1g/L～0.5g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510026527 CN1876230A (en) | 2005-06-07 | 2005-06-07 | Purification catalyst for natural gas and auto tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510026527 CN1876230A (en) | 2005-06-07 | 2005-06-07 | Purification catalyst for natural gas and auto tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1876230A true CN1876230A (en) | 2006-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510026527 Pending CN1876230A (en) | 2005-06-07 | 2005-06-07 | Purification catalyst for natural gas and auto tail gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN1876230A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111604050A (en) * | 2020-04-28 | 2020-09-01 | 中国汽车技术研究中心有限公司 | Preparation and application of spongy natural gas engine tail gas catalyst |
-
2005
- 2005-06-07 CN CN 200510026527 patent/CN1876230A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111604050A (en) * | 2020-04-28 | 2020-09-01 | 中国汽车技术研究中心有限公司 | Preparation and application of spongy natural gas engine tail gas catalyst |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |