SILICA-CARRYING PHOTOCATALYST AND ITS PRODUCTION METHOD

Japanese Patent JP2005013870

A

To solve the problem that when silica is deposited on a photocatalyst with large activity by a sol gel process in order to improve resolving efficiency of a harmful substance, silica not being deposited is produced at the same time, thereby making it difficult to control the amount of the silica deposited on the photocatalyst.

In a production method of a silica-carrying photocatalyst, the photocatalyst is suspended or is immersed in an organosilicon compound and an organic solvent. The organic solvent is evaporated by agitating obtained suspension to adsorb the organosilicon compound on a photocatalyst surface. Then the adsorbed organosilicon compound is changed to silicon oxide by adding distilled water thereto and applying photoirradiation and then silicon oxide adsorbed photocatalyst is calcined. The silocon oxide-carrying photocatalyst carries silica particulates obtained by photodeposition and calcination of the organosilicon compound on the photocatalyst particle surface.

JPH09232096	ELECTRIFICATION PREVENTING METHOD, AND ELECTRIFICATION PREVENTIVE COMPOSITE MATERIAL
WO/1994/026791	PROCESS FOR THE PREPARATION OF A CATALYST SUPPORT, CATALYST FOR OLEFIN POLYMERIZATION AND PROCESS FOR THE POLYMERIZATION OF OLEFINS WITH SAID CATALYST
WO/2004/113259	METHOD OF PRODUCING FORMALDEHYDE BY MEANS OF SELECTIVE METHANE OXIDATION

TANAKA KEIICHI
SEGAWA MOMOYO
YOSHIDA KAZUAKI

JP2003182062A

January 20, 2005

June 26, 2003

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TANAKA KEIICHI

B01J21/08; B01J35/02; B01J37/02; B01J37/34; C02F1/72; C02F1/32; (IPC1-7): B01J35/02; B01J21/08; B01J37/02; B01J37/34; C02F1/32; C02F1/72

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