Mixed oxide catalyst of k, cs, ce, cr, co, ni, fe, bi and mo...

Details Mixed oxide catalyst of k, cs, ce, cr, co, ni, fe, bi and mo... Mixed oxide catalyst of k, cs, ce, cr, co, ni, fe, bi and mo...

B - Operations, Transporting

01

J

B01J 37/00 (2006.01) B01J 23/00 (2006.01) B01J 23/887 (2006.01) C07C 253/26 (2006.01) C07C 255/08 (2006.01) B01J 27/057 (2006.01) B01J 27/185 (2006.01) B01J 27/192 (2006.01) B01J 35/02 (2006.01)

Patent

CA 2507182

A catalyst comprising a complex of catalytic oxides comprising potassium, cesium, cerium, chromium, cobalt, nickel, iron, bismuth, molybdenum, wherein the relative ratios of these elements is represented by the following general formula Aa KbCsc Ced Cre Cof Nig Xh Fei Bi j Mo12 Ox wherein A is Rb, Na, Li, TI, or mixtures thereof, X is P, Sb, Te, B, Ge, W, Ca, Mg, a rare earth element, or mixtures thereof, a is about O to about 1, b is about 0.01 to about 1, c is about 0.01 to about 1, d is about 0.01 to about 3, e is about 0.01 to about 2, f is about 0.01 to about 10, g is about 0.1 to about 10, h is about 0 to about 4, i is about 0.1 to about 4, j is about 0.05 to about 4, x is a number determined by the valence requirements of the other elements present, and wherein the catalyst is substantially free of manganese and zinc. The catalyst is useful in processes for the ammoxidation of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile and mixtures thereof, respectively.

L'invention concerne un complexe d'oxydes catalytiques comprenant du potassium, du césium, du cérium, du chrome, du cobalt, du nickel, du fer, du bismuth, du molybdène, les rapports relatifs entre ces éléments étant représentés par la formule développée suivante : A¿a? K¿b ?Cs¿c ?Ce¿d? Cr¿e?Co¿f? Ni¿g ?X¿h ?Fe¿i ?Bi¿j? Mo¿12? O¿x . ?Dans ladite formule, A représente Rb, Na, Li, T1, ou des mélanges de ceux-ci, X représente P, Sb, Te, B, Ge, W, Ca, Mg, un élément des terres rares, ou des mélanges de ceux-ci, a vaut environ O à environ 1, b vaut environ 0.01 à environ 1, c vaut environ 0.01 à environ 1, d vaut environ 0.01 à environ 3, e vaut environ 0.01 à environ 2, f vaut environ 0.01 à environ 10, g vaut environ 0.1 à environ 10, h vaut environ 0 à environ 4, i vaut environ 0.1 à environ 4, j vaut environ 0.05 à environ 4, x est un nombre déterminé par les exigences de valence des autres éléments présents. Ledit catalyseur est sensiblement exempt de manganèse et de zinc. Il est utile dans les procédé d'ammoxydation d'une oléfine choisie dans le groupe constitué de propylène, isobutylène ou des mélanges de ceux-ci, respectivement sur de l'acrylonitrile, du méthacrylonitrile et des mélanges de ceux-ci.

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