Nippon Kayaku Kabushiki Kaisha

Hitoshi Shimizu

Shigeo Takenaka

Hiroshi Hayami

Masanobu Ogawa

Fumio Sakai

Kenichiro Yamamoto

Yoshihisa Shikakura

A process for the production of aromatic nitrile having the formula (I) ##STR1## wherein X represents a chlorine, bromine, iodine or fluorine atom and n is 1 or 2, By contacting aromatic compound having the formula (II) ##STR2## wherein X and n are as defined above, with ammonia and molecular oxygen in the vapor phase in the presence of a catalyst having the following composition:

Process for the production of aromatic nitriles

An oxidation catalyst having the general formula:

Production of methacrolein and oxidation catalyst used therefor

The present invention relates to a production of 1,3-butadiene and methacrolein simultaneously by catalytic oxidation of mixed butenes composed of butene-1, cis-2-butene, trans-2-butene (unless otherwise mentioned, these three butenes will referred to as n-butenes hereinafter) and iso-butylene more particularly, this invention relates to a process for preparing 1, 3-butadiene and methacrolein simultaneously in high yields by oxidizing the mixed butenes mainly composed of n-butenes and isobutylene with molecular oxygen at an elevated temperature in the presence of a catalyst having the empirical formula:

Process for preparing 1,3-butadiene and methacrolein simultaneously

The present invention relates to a process for preparing acrylic acid by oxidizing acrolein and to an oxidation catalyst. More particularly, the present invention relates to a catalyst and a process for preparing acrylic acid by oxidizing acrolein or a mixed acrolein gas obtained by vapor phase oxidation of propylene with molecular oxygen in the presence of an oxidation catalyst of the empirical formula:

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Takasaki, Japan

Hitoshi Shimizu