COMPLEX OXIDE AND METHOD FOR PRODUCING THE SAME, AND CATALYST, METHOD AND APPARATUS FOR PURIFYING NITROGEN OXIDE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Dec 22, 2011
app pub date -
Aug 23, 2007
filing date -
Aug 25, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Provided are a complex oxide useful as a catalyst that has superior heat resistance and is able to remove a nitrogen oxide in the presence of ammonia; a method for producing the same; a nitrogen-oxide removal catalyst, which contains the complex oxide as an active ingredient; a method for removing a nitrogen oxide using the same; and an apparatus including the catalyst. The complex oxide containing cerium oxide, titanium oxide, zirconium oxide, and sulfate (sulfate ion: SO.sub.4.sup.2-) and having the cerium oxide content of 15 to 30 percent by weight and the sulfate content of 1.6 percent by weight or more, is superior in catalytic activity (ability to remove a nitrogen oxide in the presence of ammonia) and thermal stability. Accordingly, a complex oxide that is composed of cerium oxide, titanium oxide, zirconium oxide, and sulfate and have the cerium oxide content of 15 to 30 percent by weight and the sulfate content of 1.6 percent by weight or more is useful for removing a nitrogen oxide.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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