The University of Tokyo

Asahi Kasei Kabushiki Kaisha

Mitsui Minings & Melting Co., Ltd.

Natsume Koike

Tatsuya Okubo

Keiji Itabashi

Shanmugam Palani Elangovan

Makoto Yoshida

Gosuke Oyama

Yuya Oka

An oxide catalyst to be used for gas-phase catalytic ammoxidation reaction of propane or isobutane, the oxide catalyst comprising a composite oxide, wherein the composite oxide comprises a catalytically active species to be isolated from the composite oxide using a hydrogen peroxide solution, and the catalytically active species has an average composition represented by the following formula (1) in STEM-EDX measurements; Formula:MoVSbNbWXO  (1)

Oxide catalyst and method for producing unsaturated nitrile

Provided is a mordenite zeolite which can be produced without using an organic structure-directing agent, and has superior multivalent metal cation exchange capability. The mordenite zeolite according to the present invention containing silicon, a divalent metal M and aluminum in a skeletal structure, wherein the mordenite zeolite has the following atomic ratios in the state of Na-form. The mordenite zeolite preferably has a BET specific surface area of 250 m/g or more and 500 m/g or less and a micropore volume of 0.07 cc/g or more and 0.25 cc/g or less in the state of Na-form or H-form. Si/(M+Al)=5 or more and 10 or less, M/(M+Al)=0.1 or more and less than 1, and Na/(M+Al)=1 or more and less than 2.

Mordenite zeolite and production method therefor

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Tokyo, Japan

Natsume Koike