Nitto Chemical Industry Co., Ltd.

Shigeru Saito

Yutaka Sasaki

Yoshimi Nakamura

Hiroshi Utsumi

Kiyoshi Moriya

Tomio Nakamura

A process for producing acrylonitrile by the vapor-phase catalytic ammoxidation of propylene, which comprises (I) reacting propylene, a molecular oxygen-containing gas and ammonia in the presence of a catalyst expressed by the following empirical formula

Process for production of acrylonitrile

A process for preparing acrylonitrile from propylene, which comprises contacting a mixture of propylene, molecular oxygen and ammonia in the vapor phase at a temperature of about 380.degree. to about 500.degree. C. and a pressure of about atmospheric pressure to about 3 Kg/cm.sup.2 -G with a catalyst composition comprising active components of the following empirical formula

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Fuchu, Japan

Shigeru Saito