Abstract
An interplay of metallic and acidic sites over zeolite-supported Pt catalysts (Pt-KL, Pt-NaY) has been reported to enhance, first of all, the isomerization selectivity. The acidic sites arose during the reduction of Pt by H[sub 2] and were probably weak since no sign of acid-catalyzed cracking was observed. It was of interest to test catalysts where the acidic and metallic functions were physically separated. EUROPT-1 (a well-characterized 6.3% Pt/SiO[sub 2] catalyst, abbreviated as EUROPT and also as EP) has been selected as the carrier of the metallic function and HY as the acidic catalyst. The present study is complementary to another one where the acidity of the support has been changed systematically. 11 refs., 2 figs., 2 tabs.
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