Title: Method for preparing propenoic acid
Application Number: 95121666 Application Date: 1995.11.14
Publication Number: 1130172 Publication Date: 1996.09.04
Approval Pub. Date: 2001.09.26 Granted Pub. Date: 2001.09.26
International Classifi-cation: B01J23/70;C07C57/055
Applicant(s) Name: Nippon Catalyst Co., Ltd. Address:
Inventor(s) Name: Tanimoto Michio;Mihara Ichiro;Kawakame Datsuo
Attorney & Agent: WU DAJIAN
Abstract:
    Acrylic acid can be produced efficiently by subjecting acrolein to catalytic gas-phase oxidation in the presence of a molybdenum/vanadium-based oxide catalyst prepared by using particular substances as the raw materials of the individual metal elements constituting the catalyst. A preferable example of such a catalyst is prepared by using, as the raw materials of vanadium, ammonium metavanadate and at least one vanadium oxide in which the valency of vanadium is larger than 0 but smaller than 5; as the raw material of copper, copper nitrate; and, as at least part of the raw material(s) of antimony, at least one antimony oxide in which the valency of antimony is larger than 0 but smaller than 5.
Time: 9