Ammoxidation catalyst for use in producing acrylonitrile or meth

Details Ammoxidation catalyst for use in producing acrylonitrile or meth Ammoxidation catalyst for use in producing acrylonitrile or meth

1998-10-15

2000-03-28

Niebling, John F.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502215, 502305, 502311, 502321, 502353, 558323, B01J 2322, B01J 2328

Patent

active

060431865

ABSTRACT:
An ammoxidation catalyst comprising a compound oxide which contains, in specific atomic ratios, molybdenum; vanadium; 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.

REFERENCES:
patent: 5049692 (1991-09-01), Hatano et al.
patent: 5231214 (1993-07-01), Ushikubo et al.
patent: 5472925 (1995-12-01), Ushikubo et al.
Gabriele Centi et al. Applied Catalysis A: General 157 (1997) pp. 143-172.

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