Method and system for the purification of exhaust gas from an internal combustion engine
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United States of America Patent
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Feb 7, 2017
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Apr 30, 2015
app pub date -
Apr 27, 2012
filing date -
Apr 27, 2012
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Abstract
The invention provides a method and system for the purification of exhaust gas from an internal combustion engine, comprising a filter and a SCR catalyst. The filter is periodically regenerated increasing the temperature of the exhaust gas up to 850° C. and the water vapor content up to 100% by volume. The SCR catalyst comprises a hydrothermally microporous stable zeolite and/or zeotype having the AEI type framework and being promoted with copper.
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