Collect. Czech. Chem. Commun. 1992, 57, 781-787

Catalytic Properties of Fluorine Modified SmNa-Y Zeolites

Stanisłav Kowalaka, Maria Pawłowskaa and Kenneth J. Balkus, Jr.b

a A. Mickiewicz University, Faculty of Chemistry, 60-780 Poznań, Poland
b University of Texas at Dallas, Dept. of Chemistry, Richardson, Texas 75083-0688, U.S.A.


It is known that mild fluorination of zeolites, including those modified with polyvalent cations, increases their activity for acid catalyzed reactions. In this study we report the reactivity of fluorine modified Sm(III) exchanged zeolite NaY. Mild fluorination of SmNaY reduces the activity of strong protonic acid sites and increases the contribution of weak aprotic acid centres. Results for cumene cracking and toluene disproportionation as well as for 1-hexene isomerization are reported.