Influence of Cesium in Pt/NaCsβ on the Physico-Chemical and Catalytic Properties of the Pt Clusters in the Aromatization ofn-Hexane
作者： T. Bécue , F.J. Maldonado-Hodar , A.P. Antunes , J.M. Silva , M.F. Ribeiro
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摘要: Various Pt/NaCsβ catalysts with decreasing Na/Cs ratios and a Pt/KL sample taken as reference catalyst for aromatization ofn-hexane, have been prepared by exchange of NaCsβ KL zeolites in Pt tetraammine solution then calcination reduction. The increase the Cs content zeolitic support results decrease cyclohexane adsorption capacities. Pt/Csβ samples show similar behaviors which strongly differ from those Na-containing terms (i) reducibility ions after calcination, (ii) shape FTIR spectra CO adsorbed on clusters reduction, (iii) catalytic activity these conversion ofn-hexane. In particular, selectivity to is much higher than ones. reasons specific are discussed.
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