PROCESS FOR THE SIMULTANEOUS PREPARATION OF ACRYLONITRILE AND ACRYLIC ACID

Title:

PROCESS FOR THE SIMULTANEOUS PREPARATION OF ACRYLONITRILE AND ACRYLIC ACID

Document Type and Number:

WIPO Patent Application WO/1998/022421

Kind Code:

A1

Abstract:

A process for the simultaneous preparation of acrylonitrile and acrylic acid in the process for the preparation of the nitrile or the acid by gas-phase catalytic oxidation of propane with ammonia and oxygen in the presence of a metal oxide catalyst containing as the essential components vanadium and at least one element selected among tellurium, antimony and molybdenum, characterized by regulating both the molar ratio of propane to ammonia and that of oxygen to ammonia each within the range of 2 to 10. Conducting the ammoxidation of propane at the selected molar ratios of propane to ammonia and oxygen to ammonia enables the simultaneous preparation of acrylonitrile and acrylic acid at a high total selectivity and in a high total yield. Further, the catalytic activity can be retained for a long period, so that the ammoxidation can be conducted efficiently and stably for a long period.

Inventors:

KAYOU ATSUSHI (JP)
IHARA TATSUYA (JP)

Application Number:

PCT/JP1997/004169

Publication Date:

May 28, 1998

Filing Date:

November 17, 1997

Export Citation:

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Assignee:

MITSUBISHI CHEM CORP (JP)
KAYOU ATSUSHI (JP)
IHARA TATSUYA (JP)

International Classes:

C07C51/215; C07C253/24; C07C255/08; (IPC1-7): C07C57/05; C07C253/24; C07C255/08

Foreign References:

JPH05293374A	1993-11-09
JPH0857319A	1996-03-05
JPH08225506A	1996-09-03
JPH0710801A	1995-01-13
JPH06199768A	1994-07-19
JPH05279313A	1993-10-26
JPH05213848A	1993-08-24
JPH05148212A	1993-06-15
JPH01268668A	1989-10-26
JPH09157241A	1997-06-17
JPH09104666A	1997-04-22
JPH09316023A	1997-12-09

Other References: