Solid for storing/releasing nitrogen oxides as well as nitrogen oxide storage catalyst
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 30, 2001
Grant Date -
N/A
app pub date -
Jul 10, 1998
filing date -
Jul 10, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An Ag-containing solid, such as Ag.sub.2 O, Ag.sub.2 CO.sub.3, and AgOH, is used for storing/releasing nitrogen oxides in an exhaust gas from an engine during controlled cycling of the .lambda.-value of the exhaust gas. The nitrogen oxides are stored at .lambda.-values of the gas greater than 1 in the Ag-containing solid and the nitrogen oxides are released at .lambda.-values of the gas less than or equal to 1 from the Ag-containing solid. The Ag-containing solid may include a precious metal or a microporous carrier, for example, ZrO.sub.2, SiO.sub.2, TiO.sub.2, Si--Al mixed oxide, and zeolites.
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