Abstract
1. The nonlinear nature of the dependence of the catalytic activity and the content of radioactive oxygen in type Y zeolites on the degree of exchange of sodium for copper was established; it can be explained by nonequivalence of the sites occupied by copper ions in the zeolite lattice. 2. The existence of activated adsorption of ethylene and carbon monoxide in the precatalytic region was demonstrated for zeolites containing copper in the oxidized state. At lower temperatures there is a physical adsorption, and the exchange of sodium for copper does not influence the heat of adsorption of ethylene. 3. After the removal of reactive oxygen from CuY zeolite, the adsorption of ethylene and carbon monoxide is substantially intensified, which may indicate stronger bonds of C2H4 and CO directly to the copper ion.
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