2015 Fiscal Year Final Research Report
Development of high-performance catalyst using for the NOx purification of the exhaust gas with lean combustion by DME reductant
| Project/Area Number |
24550171
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental chemistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Keywords | 窒素酸化物浄化 / ジメチルエーテル / NO選択的還元 / 銀アルミナ触媒 / ディーゼル排ガス |
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| Outline of Final Research Achievements |
NOx is one of the typical pollutants of the global environment, the reduction and removal of NOx is a very important problem. Diesel vehicles is known in the points as the high heat efficiency, the energy-saving and low CO2 emissions. Since diesel vehicle is operating at excess air condition, the exhaust will contain a large amount of NOx and oxygen, it is impossible to purify NOx by using of the three-way catalyst as gasoline vehicles. The urea SCR device has been put into practical use as a post-treatment device for diesel NOx. It does not reach the still consummate technology because it has been left many problems.
In this study, we developed a new selective reduction method using dimethyl ether (DME) as a reducing agent, which is easier to use than the current urea SCR system, and aimed at the establishment of effective NOx post-processing method. The results showed that this method can be a new processing system.
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| Free Research Field |
触媒化学
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