Title:
METHOD FOR PREPARING HIGHLY ACTIVE PHOTOCATALYST AND METHOD FOR TREATING HYDROGEN SULFIDE ALLOWING RECOVERY OF HYDROGEN GAS WITH LOW ENERGY CONSUMPTION BY USE OF HIGHLY ACTIVE PHOTOCATALYST
Document Type and Number:
WIPO Patent Application WO/2002/018049
Kind Code:
A1
Abstract:
A method for preparing a highly active photocatalyst, characterized in that it comprises subjecting the surface of a zinc sulfide product to an oxidizing treatment with hydrogen peroxide to modify it. The oxidizing treatment is preferably carried out in an aqueous basic solution; and a method for treating hydrogen sulfide, characterized in that the highly active photocatalyst is added to an aqueous basic solution containing hydrogen sulfide to thereby recover hydrogen and sulfur. The above photocatalyst is a novel catalyst which exhibits high activity, is inexpensive and has a long useful life, and thus can be used for generating hydrogen from hydrogen sulfide efficiently with low energy consumption.
More Like This:
| JP2004277269 | METHOD FOR MANUFACTURING PARTIALLY SULFIDED TITANIUM OXIDE |
| WO/2005/066316 | SYSTEMS AND METHODS OF PRODUCING A CRUDE PRODUCT |
| JPS584579 | [Title of the Invention] The |
Inventors:
TOHJI KAZUYUKI (JP)
KASUYA ATSUO (JP)
KASUYA ATSUO (JP)
Application Number:
PCT/JP2001/007616
Publication Date:
March 07, 2002
Filing Date:
September 03, 2001
Export Citation:
Assignee:
JAPANESE SCIENCE AND TECHNOLOG (JP)
TOHJI KAZUYUKI (JP)
KASUYA ATSUO (JP)
TOHJI KAZUYUKI (JP)
KASUYA ATSUO (JP)
International Classes:
B01J27/04; B01J35/00; B01J35/02; B01J37/12; C01B3/06; C01B3/04; C01B17/05; C01B17/06; C01G9/08; (IPC1-7): B01J35/02; B01J27/04; C01B17/06; C01B3/04
Foreign References:
| JPS6265743A | 1987-03-25 | |||
| US6077497A | 2000-06-20 | |||
| US6017425A | 2000-01-25 |
Other References:
SHUUHEI SAKUMA ET AL.: "Atarashiii process ni yoru stratified handoutai; biruushi no chousei to sono hikari-shokubai tokusei", SHIGEN SOZAI '99 (KYOTO) KIKAKU HAPPYO, IPPAN HAPPYO (D) SHIRYO SOZAI PROCESSING, November 1999 (1999-11-01), pages 201 - 204, XP001055057
TATEO ARAI ET AL.: "Stratified handoutai birushi hikari-shokubai no kouzou to shokubai hannou kinou", SHIGEN SOZAI '99 (KYOTO) KIKAKU HAPPYOU, IPPAN HAPPYOU (D) SHIRYOU SOZAI PROCESSING, November 1999 (1999-11-01), pages 203 - 204, XP001055058
LINKOUS C.A.: "Photocatalytic production of hydrogen from hydrogen sulfide using semiconductor particulates", HYDROGEN ENERGY PROGRESS, vol. 2, no. 10, June 1994 (1994-06-01), pages 755 - 762, XP001055059
See also references of EP 1314478A4
TATEO ARAI ET AL.: "Stratified handoutai birushi hikari-shokubai no kouzou to shokubai hannou kinou", SHIGEN SOZAI '99 (KYOTO) KIKAKU HAPPYOU, IPPAN HAPPYOU (D) SHIRYOU SOZAI PROCESSING, November 1999 (1999-11-01), pages 203 - 204, XP001055058
LINKOUS C.A.: "Photocatalytic production of hydrogen from hydrogen sulfide using semiconductor particulates", HYDROGEN ENERGY PROGRESS, vol. 2, no. 10, June 1994 (1994-06-01), pages 755 - 762, XP001055059
See also references of EP 1314478A4
Attorney, Agent or Firm:
Koike, Akira (Toranomon 2-chome Mitato-ku, Tokyo, JP)
Download PDF:
Previous Patent: PHOTOCATALYST COMPRISING METAL OXYNITRIDE RESPONSIVE TO VISIBLE LIGHT
Next Patent: SELECTIVELY HEATABLE SUBSTANCE SUPPORT
Next Patent: SELECTIVELY HEATABLE SUBSTANCE SUPPORT