Mitsubishi Gas Chemical Company, Inc.

Yuzi Onda

Masao Saito

Tetsuo Aoyama

Susumu Naito

Kengo Tsukahara

Hidetaka Kiga

Kinichi Mizuno

Koichi Abe

Kumiko Kato

Noriko Takahashi

The present invention relates to a catalyst which comprises a vanadium oxide, a chromium oxide, a molybdenum oxide and a boron oxide supported on a silica carrier. This catalyst is suitable for use in the production of aromatic nitriles from alkyl-substituted aromatic compound by the catalytic reaction of a gas mixture containing an alkyl-substituted aromatic compound, ammonia and oxygen or a gas containing molecular oxygen over a catalyst. The present invention further relates to a process for producing the aromatic nitriles using said catalyst.

Catalyst for producing aromatic nitriles

Catalyst and process for producing aromatic nitriles

A process for producing an acyloxynaphthoic acid represented by the general formula ##STR1## wherein R.sub.1 represents a hydrogen atom or an alkyl group, which comprises

Process for producing acyloxynaphthoic acids

Dimethylformamide mg.multidot.produced by reaction of monomethylamine and trimethylamine at a molar ratio of trimethylamine to monomethylamine of 0.1-10, with carbon monoxide in the presence of 1-500 mg. atom of at least one of iodine, bromine, iodides and bromides as a catalyst in term of halogen per one mole of raw material methylamines at a temperature of 100.degree.-350.degree. C. under a pressure of at least 50 kg/cm.sup.2 gage. Dimethylformamide is produced in a very high yield with a high selectivity from monomethylamine and trimethylamine having less demand among three species of methylamines formed from methanol and ammonia.

Process for producing dimethylformamide

Dimethyl formamide is produced in high yield with high selectivity by reaction of monomethyl formamide with trimethylamine and carbon monoxide in the presence of a catalyst such as halogen elements, halides, inorganic acids, solid acids and metal carbonyls at a temperature of 150.degree. to 300.degree. C under a pressure of 20 kg/cm.sup.2 gage or higher.

Process for producing dimethyl formamide

Growing community of inventors

Niigata, Japan

Yuzi Onda