EXHAUST GAS PURIFICATION CATALYST APPARATUS USING SELECTIVE REDUCTION CATALYST, EXHAUST GAS PURIFICATION METHOD, AND DIESEL AUTOMOBILE MOUNTED WITH EXHAUST GAS PURIFICATION CATALYST APPARATUS
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Apr 18, 2013
app pub date -
May 9, 2011
filing date -
Jun 24, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An exhaust gas purification catalyst apparatus is arranged with an oxidation catalyst (DOC) having a noble metal component for oxidizing a nitrogen oxide (NO) in exhaust gas discharged from a diesel engine, a reducing agent spraying means for supplying a reducing agent selected from an urea component or an ammonia component, and a selective reduction catalyst (SCR) for reducing the nitrogen oxide (NOx) by making contacted with the reducing agent, in this order from the upstream side of a flow passage of exhaust gas. The selective reduction catalyst (SCR) does not comprise the noble metal component and includes zeolite or a crystal metal aluminophosphate; and further, a trap means for collecting the noble metal component volatilized from the oxidation catalyst (DOC) is arranged between the oxidation catalyst (DOC) and the selective reduction catalyst (SCR), or the like.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully