Method for producing tungsten trioxide powder for photocatalyst, tungsten trioxide powder for photocatalyst, and photocatalyst product
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 23, 2011
Grant Date -
May 6, 2010
app pub date -
Mar 11, 2008
filing date -
Mar 23, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for producing a tungsten trioxide powder for a photocatalyst according to the present invention is characterized by comprising a sublimation step for obtaining a tungsten trioxide powder by subliming a tungsten metal powder or a tungsten compound powder by using inductively coupled plasma process in an oxygen atmosphere, and a heat treatment step for heat-treating the tungsten trioxide powder obtained in the sublimation step at 300° C. to 1000° C. for 10 minutes to 2 hours in an oxidizing atmosphere. A tungsten trioxide powder which is obtained by the method for producing a tungsten trioxide powder for a photocatalyst according to the present invention has excellent photocatalytic performance under visible light.
First Claim
Family
International Classification(s)
- C22B:PRODUCTION OR REFINING OF METALS
- C23C:COATING METALLIC MATERIAL; COATING MATERIAL WITH M....
- H05B:ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE ....
- B01J:CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, CO....
- B22F:WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES F....
- H05H:PLASMA TECHNIQUE
- H01T:SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS....
- C01G:COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLAS....
- C22F:CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS MET....
- [Classification Symbol]
- [Patents Count]
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