Iron-containing zeolites as catalysts of the profound oxidation of propylene

Abstract

1. The catalytic behavior of iron-containing zeolites in the reaction of profound oxidation of propylene was studied. It was found that the catalytic activity of zeolites of the NaX, NaY, CaX, and CaA types increases sharply with the replacement of Na+ or Ca2+ ions by the iron ion. 2. A change in the degree of exchange of Na+ or Ca2+ ions for the Fe3+ ion in zeolites of the X, Y, and CaA types influences the rate constant and the conversion of propylene. 3. The change in the catalytic activity of zeolites with the introduction of the iron is evidently associated with the nonequivalence of the cationic regions in the structures of the individual zeolites.