Preparation of dicarboxylic anhydrides

Details Preparation of dicarboxylic anhydrides Preparation of dicarboxylic anhydrides

1978-02-27

1979-09-11

Ford, John M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30760

Patent

active

041675169

ABSTRACT:
A catalyst complex useful for the partial oxidation of alkanes to the corresponding anhydrides, e.g., converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase, comprising as components vanadium, phosphorus, oxygen, Nb, Cu, Mo, Ni, Co and Cr and one or more of Y, Sm, Tb or Eu. Preferred are those compositions containing in addition one or more of Ce, Nd, Ba, Hf, U, Ru, Re, Li or Mg.

REFERENCES:
patent: 3156705 (1964-11-01), Kerr
patent: 3297587 (1967-01-01), Scherhag et al.
patent: 3875220 (1975-04-01), White et al.
patent: 3956181 (1976-05-01), Grasselli et al.
patent: 3980585 (1976-09-01), Kerr et al.
patent: 4056487 (1977-11-01), Kerr

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