PHOTOCATALYST AND ITS PREPARATION

Japanese Patent JPH1099694

A

To provide a highly active photocatalyst which consists of a laminar composite compound such as K4Nb6O17 having a uniform composition and texture and to provide a method for preparing the photocatalyst.

The compound of group VA elements, a ligand and the compound of alkali metallic elements are mixed with a solvent and the mixture is agitated while heating it at 353-423 K. Esterification reaction is advanced and gelatification is caused. The mixture is heated at ≤620 K to remove excess solvent and/or an organic component and heat-treated at 600-800 K. Thereafter, the mixture is pulverized to produce precursor powder. Precursor powder is heat-treated at 773-1200 K to produce powder of a laminar compound consisting of the alkali metallic elements and the group VA elements. At least one kind selected from a group consisting of Ni, Pt, Ir, Ru and oxides thereof is carried on powder of the laminar compound at 0.1-5wt.% (in terms of metallic element).

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WO/2023/089353	NEW SURFACE ORGANOMETALLIC CHEMISTRY PROCESSES FOR IMPROVED NH3-SCR CATALYSTS

ARIMA MOMOKO
YAMASHITA YOICHI
YOSHIDA KIYOHIDE
KAKIHANA MASATO
DOUMEN KAZUNARI

JP28024096A

April 21, 1998

October 01, 1996

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RIKEN KK
KAKIHANA MASATO

B01J23/20; B01J23/648; B01J23/847; B01J35/02; C01B3/02; (IPC1-7): B01J35/02; B01J23/20; B01J23/648; B01J23/847; C01B3/02

Takaishi Tachibana

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