Investigation of the catalytic conversions of acetone on cationic forms of faujasite and mordenite

Abstract

1. At 200–450° and a pressure of 30 atm, type-Y zeolites, containing cations of metals of groups I, II, and the rare earth elements are active in the hydrogenation of acetone. A correlation of the activity of the catalysts with the value of the electrostatic potential of the anions (e/r2) was noted. 2. The activity of samples of NaHY and NaHM, produced by decationization of Na forms of zeolites and recationization of NH4Y and NH4M, increases with increasing concentration of Na+ cations, which indicates the participation of these cations in hydrogenation reactions. 3. The catalytic properties of decationized and recationized forms of mordenite of the same composition do not differ. NaHY zerolites, produced by recationization of NH4Y, are more active than HNaY prepared by decationization of NaY, which is evidently due to the different arrangement of the Na+ ions in the structure of the indicated catalysts.