Sumitomo Titanium Corporation

Sumitomo Metal Industries, Inc.

Sumitomo Sitix Corporation

Osaka Titanium Technologies Co., Ltd.

Munetoshi Watanabe

Tadashi Ogasawara

Haruhiko Kajimura

Yasuhiro Masaki

Kazuomi Azuma

Takashi Onishi

Yoshitake Natsume

Katsuhiro Nishihara

Katsumi Okada

Michiyasu Takahashi

Tadashi Yao

Shiji Shimosaki

Tsuyoshi Sakaguchi

Kouji Oda

Sadanobu Nagaoka

Masamichi Kato

Toshiharu Iwase

Titanium oxide-based photocatalysts which contain a metal halide in titanium oxide and which are prepared from titanium oxide and/or its precursor, which may optionally be heat treated, by contact with a reactive gas containing a metal halide of the formula MXor MOX(wherein M=a metal, X=a halogen, and n=an integer) with heating stably develop a high photocatalytic activity with visible light irradiation. The photocatalysts may subsequently be stabilized by contact with water or by heat treatment, and/or promoted by contact with a heteropoly acid and/or an isopoly acid so as to include a metal complex in the titanium oxide. Photocatalysts prepared in this manner exhibit novel ESR features. The present invention also provides methods for preparing these photocatalysts, a photocatalyst dispersion and a photocatalytic coating fluid containing such a photocatalyst, and photocatalytic functional products and methods for their manufacture using the photocatalyst.

Titanium oxide photocatalyst, process for producing the same and application

Provided are a porous sintered compact suitable for a filter, a power feeder in a polymer electrolyte membrane type water electrolyzer, a current collector in a solid polymer fuel cell and in addition a liquid dispersion plate, especially an ink dispersion plate for an ink jet printer ink and the like. A titanium powder sintered compact made of a plate-like porous compact is obtained by sintering spherical powder made of titanium or a titanium alloy produced by means of a gas atomization method. A void ratio in the range of from 35 to 55% is realized by filling without applying a pressure and sintering without applying a pressure.

Titanium powder sintered compact

A sintered object of silicon monoxide for use as a material for forming silicon oxide thin films is provided of which the evaporation residue as determined by subjecting a sample thereof to thermogravimetry at a heating temperature of 1,300&#xb0; C. and in a vacuum atmosphere, namely at a pressure of not higher than 10 Pa, is not more than 4% by mass relative to the sample before measurement. This sintered object can be produced by sintering SiO particles having a particle diameter of not smaller than 250 &#x3bc;m, either after press forming thereof or during press forming thereof, in a non-oxygen atmosphere. This sintered object is high in evaporation rate and, when it is used as a material for film formation, an improvement in productivity in producing silicon oxide thin films can be expected. Thus, it can be widely applied in forming silicon oxide thin films useful as electric insulating films, mechanical protection films, optical films, barrier films of food packaging materials, etc.

Sintered object of silicon monoxide and method for producing the same

Color development method of metallic titanium and black and colored

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Suita, Japan

Munetoshi Watanabe