Mitsubishi Chemical Corporation

Mitsubishi Chemical Industries Limited

Mitsubishi Kasei Corporation

Masakatsu Hatano

Masayoshi Murayama

Masumi Ito

Kenji Shima

Kazunori Oshima

Toru Koyama

Masayuki Otake

Yoichi Kageyama

Akio Nakanishi

Tatsuya Ihara

Mitsuharu Kobayashi

Atsushi Kayo

Hiroshi Takeo

Yoshio Kabata

Takao Kaneko

Kenichi Kiyono

Masayuki Shirado

Masayosi Murayama

A method for producing a polyoxyalkylene glycol by ring opening polymerization of a cyclic ether, wherein a zeolite (other than ZSM-5, ZSM-11 and Nu-5) is used as a catalyst.

Method for producing a polyoxyalkylene glycol and novel

A process for producing a vanadium-phosphorus oxide-containing catalyst precursor, which comprises (a) introducing into an organic solvent a vanadium alkoxide as a pentavalent vanadium compound and a phosphorus compound in the presence of a reducing agent capable of reducing the pentavalent vanadium compound to a tetravalent state, (b) hydrolyzing at least a part of the vanadium alkoxide before or after the introduction of the phosphorus compound, and (c) heating the vanadium-containing liquid medium obtained in step (b), in the presence of the phosphorus compound to reduce at least a part of vanadium to a tetravalent state.

Process for producing a vanadium-phosphorus oxide catalyst precursor

A process for producing a crystalline oxide of vanadium-phosphorus system, which comprises hydrothermally treating an aqueous medium containing (1) a tetravalent vanadium compound, (2) a pentavalent phosphorus compound, (3) a coordinate compound having at least two ligand atoms selected from the group consisting of oxygen atoms and nitrogen atoms and (4) a compound of at least one metal element selected from the group consisting of iron, nickel, cobalt and chromium, to form a crystalline oxide of vanadium-phosphorus system having an X-ray diffraction pattern shown in Table A:

Process for producing crystalline oxide of vanadium-phosphorus system

Disclosed herein is a process for producing a nitrile which comprises subjecting an alkane to a gas-phase catalytic oxidation reaction with ammonia in the presence of a complex oxide solid catalyst composed of molybdenum, vanadium, tellurium and niobium. According to the process of the present invention, it is possible to produce the objective nitrile at a high selectivity without using a halide, water, etc., moreover, at a relatively low temperature of about 350.degree. to 480.degree. C., particularly about 400.degree. to 450.degree. C.

Catalytic conversion of alkanes to nitriles, and a catalyst therefor

A catalystic composition suitable for producing acrylonitrile from propylene, ammonia and oxygen (or oxygen-containing gas), which composition is represented by the following formula:

Catalytic composition

There is disclosed a catalytic composition represented by the formula:

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Yokohama, Japan

Masakatsu Hatano