Activity of immobilized catalytic compounds in the oxidation of 1-octene with molecular oxygen

Abstract

Communications [1–3] have described the results of the studies of catalytic activity of a number of rhodium, palladium, iridium, and ruthenium complex compounds in the reaction of liquid-phase oxidation of 1-octene with molecular oxygen. In this communication we present the data on the catalytic properties of some of these metal complexes in an immobilized form. The principle of immobilization of metal complexes is based on the known ability of the transition metals (M) cyanides to act as metal-containing ligands coordinating to other transition metals (M') through the nitrogen atom of the cyanide groups to form M–CN– M' bridges [4–9]. The catalysts studied in this work were prepared by fixing a metal on the surface of the carrier (alumina), on which Ni(II) cyanide was preliminary applied. Thus, the data presented here characterize the catalytic activity of immobilized bimetallic compositions Ni–CN–M'Ln, where Ln is a set of the ligands forming the coordination sphere of the transition metal M'. As a quantitative characteristic of the catalytic activity of the compositions we used, as in [1, 2], the initial rate of oxidation of 1-octene (W0) determined from the curve of the rate of oxygen consumption extrapolated to zero time.