Abstract:
Unsatd. aldehydes and acids were obtained by oxidn. of olefins using the improved catalyst I (X = Ce, Th, Mn, Pr, Nb, Ge, Cr, Y, Zr, Ru, Ga, Sn, In, Cu, La, Ta, W or their mixt., A = alkali metal, Tl or their mixt, D = Ni, Co, Mg, Zn, Cd, Ca, Sr, or their mixt., E = P, As, B, S, Al, or their mixt. 0
Abstract:
Very desirable oxidation catalysts are prepared by impregnating a catalytic oxide matrix containing at least cobalt and molybdenum, magnesium and molybdenum, nickel and mulybdenum, manganese and molybdenum with iron, bismuth, tellurium or a mixture thereof.
Abstract:
High per pass conversions to acrylonitrile and acrylic acid or methacrylonitrile and methacrylic acid and desirable commercial flexibility are realized by reacting propylene or isobutylene with molecular oxygen and about 0.1 to about 0.9 moles of ammonia per mole of olefin in the presence of two catalysts. The first catalyst is an ammoxidation catalyst, and the second catalyst is an oxidation catalyst.
Abstract:
Disclosed is a method for ammoxidizing C3 to C5 mono-olefins to a,b-mono-unsaturated acyclic nitriles having 3 to 5 carbon atoms and HCN by introducing such mono-olefins molecular oxygen and ammonia into a reaction zone into vapor phase contact with a solid ammoxidation catalyst, wherein the mol ratio of introduced molecular oxygen and ammonia to said introduced mono-olefin is at least 1.5 and 1.0, respectively, wherein said catalyst contains the elements and proportions indicated by the empirical formula: V1SbaMmNnOx where a = 0.5 to 2 M = one or more of: Sn, Ti, Fe, and Ga m = 0.05 to 3, usually at least 0.1 and at most 1 N = one or more of: W, Bi, Mo, Li, Mg, P, Zn, Mn, Te, Ge, Nb, Zr, Cr, Al, Cu, Ce, B n = 0.0 to 0.5, and wherein the preparation of the catalyst includes contacting in an aqueous dispersion a vanadium compound and an antimony compound while said vanadium is in solution.
Abstract:
Disclosed is a process for the vapor phase ammoxidation of a C3 to C5 paraffin to an alpha , beta -unsaturated nitrile having 3-5 C atoms, using a particulate bismuth-vanadium oxide catalyst containing at least one other specified element.
Abstract:
Bismuth cerium molybdate catalysts promoted with alkali metal and other optional ingredients provide high yields of acrylonitrile in the ammoxidation of propylene.
Abstract:
(5277) IMPREGNATING CATALYSTS An element selected from Groups IA, IB, IIB, IIIA and IIIB is incorporated into an iron bismuth molybdate oxide complex catalyst by impregnation.