Nippon Kayaku Kabushiki Kaisha

Nippon Kayaku Co., Ltd

Fumio Sakai

Kazuo Shiraishi

Yoshimasa Seo

Koichi Wada

Atsushi Sudo

Hideki Sugi

Hiroyoshi Nowatari

Akira Iwamoto

Tatsuhiko Kurakami

Toshitake Kojima

Tomoaki Kobayashi

Hitoshi Shimizu

Atsushi Umejima

Hideaki Miki

Atsusi Sudo

Yoshihisa Shikakura

An object of the present invention is to provide a process for stably producing a catalyst for methacrylic acid production exhibiting high activity and high performance. The process for producing a catalyst for methacrylic acid production of the invention is characterized in that the water content of the catalyst ingredient powder for use in molding, temperature and humidity of a molding step, humidity and temperature of a baking step are individually controlled in the case where molding is performed by a coating method using an Mo&#x2014;V&#x2014;P&#x2014;Cu-based hetero polyacid as an active ingredient and water or an alcohol and/or an aqueous solution of an alcohol as a binder.

Process for producing catalyst for methacrylic acid production and process for producing methacrylic acid

Producing acrolein and acrylic acid using a supported dual activity

Catalysts and process for the preparation thereof

A catalyst for the production of unsaturated aldehyde and unsaturated acid, obtained by loading a catalytically active component on a carrier and calcining the loaded catalyst, characterized by an average particle diameter of the catalyst of 4 to 16 mm, an average particle diameter of the carrier of 3 to 12 mm, a calcining temperature of 520 to 600.degree. C. and an amount of the catalytically active component loaded on the carrier of 5 to 80% by weight �weight of the catalytically active component)/(weight of the catalytically active component+weight of the carrier+weight of a strength improver)!, and a process for producing unsaturated aldehyde and unsaturated acid with the catalyst.

Catalyst and process for producing unsaturated aldehyde and unsaturated

An oxidation catalyst having the general formula:

Production of methacrolein and oxidation catalyst used therefor

Growing community of inventors

Gunma-ken, Japan

Fumio Sakai