Title: Ammoxidation catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation
Application Number: 98124536 Application Date: 1998.10.15
Publication Number: 1216721 Publication Date: 1999.05.19
Approval Pub. Date: 2002.07.31 Granted Pub. Date: 2002.07.31
International Classifi-cation: B01J23/28;B01J27/057;C07C253/24;C07C255/08
Applicant(s) Name: Asahi Kasei Kogyo K. K. Address:
Inventor(s) Name: Satoru Komada;Kazuyuki Hamada
Attorney & Agent: liu jinhui
Abstract:
    An ammoxidation catalyst comprising a compound oxide which contains, in specific atomic ratios, molybdenum; barium; niobium; at least one element selected from tellurium and antimony; and at least one element selected from ytterbium, dysprosium, erbium, neodymium, samarium, lanthanum, praseodymium, europium, gadolinium, terbium, holmium, thulium, lutetium and scandium. By the use of the ammoxidation catalyst of the present invention, the ammonia-based yield of acrylonitrile or methacrylonitrile can be largely increased without sacrificing the propane- or isobutane-based yield of acrylonitrile or methacrylonitrile. Thus, the feed-stock ammonia can be efficiently utilized in the ammoxidation of propane or isobutane while achieving an efficient utilization of propane or isobutane.
Time: 14