Title:
PHOTODECOMPOSITION CATALYST AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3782835
Kind Code:
B2
Abstract:
PURPOSE: To produce the catalyst capable of efficiently exerting its catalytic effect with sunlight by using a metallic oxide as the semiconductor in a photodecomposition catalyst produced through enclosing a semiconductor excitable with sunlight within a cation- or anion-exchange layer compound.
CONSTITUTION: This catalyst is produced by enclosing a semiconductor excitable with sunlight within a cation- or anion-exchange layer compound to form a clathrate compound, wherein a metallic oxide is used as the semiconductor. At this time, a salt compound contg. a metallic ion and the cation-exchange layer compound are subjected to ion exchange with each other and thereafter the resulting metallic ion- containing compound is decomposed, or a sol of a metallic compound and a cation- exchange layer compound are subjected to ion exchange with each other to enclose the metallic oxide in the spaces among the layers of the layer compound. Alternatively, a chelating agent contg. a Fe3+ ion and an anion-exchange layer compound are subjected to ion exchange with each other and thereafter oxidized with an aq. solution contg. an oxidizing agent to form a clathrate compound through enclosing iron oxide in the spaces among the layers of the anion-exchange layer compound. Accordingly, by using the catalyst, the photodecomposition of water or reduction of carbon dioxide is efficiently performed.
Inventors:
Tsugio Sato
Okuji Waki
Kiyohide Yoshida
Okuji Waki
Kiyohide Yoshida
Application Number:
JP32168194A
Publication Date:
June 07, 2006
Filing Date:
November 30, 1994
Export Citation:
Assignee:
Otsuka Chemical Holdings Co., Ltd.
International Classes:
B01J23/745; B01J21/06; C01B3/04; B01J23/20; B01J31/08; B01J35/02; B01J37/30; H01L31/00; (IPC1-7): B01J35/02; B01J21/06; B01J23/20; B01J31/08; B01J37/30; C01B3/04; H01L31/00
Domestic Patent References:
| JP59112841A | ||||
| JP8089799A | ||||
| JP62068547A | ||||
| JP6001734A |
Other References:
佐藤次雄,層間包接光触媒の合成と光-化学エネルギー変換,表面(表面談話会・コロイド懇話会),表面談話会/コロイド懇話会 広信社,1993年,Vol.31,No.3,252-260
佐藤次雄、外2名,CdSおよびFe2O3包接層状ニオブ酸化合物とその光触媒特性,日本化学会第62回講演予稿集II,日本化学会,1991年,62,675
Hirokazu MIYOSHI et al.,Photochemical Properties of Iron Oxide Incorporated in Clay Interlayers,Journal of the Chemical Society, Faraday Transactions 1,1989年,Vol. 85,1873-1880
Hiroshi YONEYAMA et al.,Photocatalytic Activities of Microcrystalline TiO2 Incorporated in Sheet Silicates of Clay,Journal of Physical Chemistry,1989年,Vol.93,4833-4837
Akihiko KUDO et al.,Photocataltic Decomposition of Water over NiO-K4Nb6O17 Catalyst,Journal of Catalysis,1988年,Vol. 111,67-76
佐藤次雄,層間包接光触媒の合成と光-化学エネルギー変換,表面(表面談話会・コロイド懇話会),表面談話会/コロイド懇話会 広信社,1993年,Vol.31,No.3,252-260
佐藤次雄、外2名,CdSおよびFe2O3包接層状ニオブ酸化合物とその光触媒特性,日本化学会第62回講演予稿集II,日本化学会,1991年,62,675
Hirokazu MIYOSHI et al.,Photochemical Properties of Iron Oxide Incorporated in Clay Interlayers,Journal of the Chemical Society, Faraday Transactions 1,1989年,Vol. 85,1873-1880
Hiroshi YONEYAMA et al.,Photocatalytic Activities of Microcrystalline TiO2 Incorporated in Sheet Silicates of Clay,Journal of Physical Chemistry,1989年,Vol.93,4833-4837
Akihiko KUDO et al.,Photocataltic Decomposition of Water over NiO-K4Nb6O17 Catalyst,Journal of Catalysis,1988年,Vol. 111,67-76
佐藤次雄、外2名,CdSおよびFe2O3包接層状ニオブ酸化合物とその光触媒特性,日本化学会第62回講演予稿集II,日本化学会,1991年,62,675
Hirokazu MIYOSHI et al.,Photochemical Properties of Iron Oxide Incorporated in Clay Interlayers,Journal of the Chemical Society, Faraday Transactions 1,1989年,Vol. 85,1873-1880
Hiroshi YONEYAMA et al.,Photocatalytic Activities of Microcrystalline TiO2 Incorporated in Sheet Silicates of Clay,Journal of Physical Chemistry,1989年,Vol.93,4833-4837
Akihiko KUDO et al.,Photocataltic Decomposition of Water over NiO-K4Nb6O17 Catalyst,Journal of Catalysis,1988年,Vol. 111,67-76
佐藤次雄,層間包接光触媒の合成と光-化学エネルギー変換,表面(表面談話会・コロイド懇話会),表面談話会/コロイド懇話会 広信社,1993年,Vol.31,No.3,252-260
佐藤次雄、外2名,CdSおよびFe2O3包接層状ニオブ酸化合物とその光触媒特性,日本化学会第62回講演予稿集II,日本化学会,1991年,62,675
Hirokazu MIYOSHI et al.,Photochemical Properties of Iron Oxide Incorporated in Clay Interlayers,Journal of the Chemical Society, Faraday Transactions 1,1989年,Vol. 85,1873-1880
Hiroshi YONEYAMA et al.,Photocatalytic Activities of Microcrystalline TiO2 Incorporated in Sheet Silicates of Clay,Journal of Physical Chemistry,1989年,Vol.93,4833-4837
Akihiko KUDO et al.,Photocataltic Decomposition of Water over NiO-K4Nb6O17 Catalyst,Journal of Catalysis,1988年,Vol. 111,67-76
Attorney, Agent or Firm:
Takaishi Tachibana
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