PHOTOCATALYST PARTICLE BODY AND PRODUCTION THEREOF

Japanese Patent JP3768629

B2

PROBLEM TO BE SOLVED: To form a coating film which can prevent photo-deterioration, on the surface of a photocatalyst particle and suppress the decrease of the quantity of light due to the coating film by depositing SiO2 on the surface of the photocatalyst particle by hydrolysis of an alkoxysilane.
SOLUTION: This photocatalyst particle is added to a liquid containing an alkoxysilane such as tetreamethoxysilane, tetraethoxysilane, tetraisopropoxysilane, etc., water, and an alcoholic solvent such as methyl alcohol, ethyl alcohol, propyl alcohol, etc., sufficiently stirred as to be evenly dispersed, and then hydrolysis reaction is carried out. After that, the treated photocatalyst particle is separated from the liquid containing the alkoxysilane, water, and the alcoholic solvent and the separated particle is heated to form a SiO2 coating. Consequently, occurrence of photo-deterioration of paper, high molecular polymer, etc., carrying the photocatalyst particle can be prevented and the decrease of the quantity of light die to the coating can be suppressed.

WO/2024/028341	CATALYST FOR THE PRODUCTION OF 1,3-BUTADIENE COMPRISING AN ALUMINIUM-CONTAINING SUPPORT WITH HIGH FAVOURABLE WEIGHT HOURLY SPACE VELOCITY
WO/2005/003072	PROCESS AND CATALYST FOR THE PREPARATION OF ALDONIC ACIDS
JP3694537	PRODUCTION OF MIXED OXIDE POWDERS USED IN CATALYST FOR REMOVAL OF NITROGEN OXIDES

Kotaro Shimobayashi

JP34337396A

April 19, 2006

December 24, 1996

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NITTO DENKO CORPORATION

B01J37/02; B01J33/00; C01B33/12; B01J35/02; C09D7/12; (IPC1-7): B01J33/00; B01J35/02; B01J37/02; C01B33/12; C09D7/12

JP8266898A
JP8164334A
JP9225322A

Takao Suzuki
Koichi Kajisaki
Yuzo Ozaki
Toshihiko Taniguchi

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