Investigation on Ru–Pd/Al2O3 Catalyst for Deep Removal of Sulfur Compounds Potentially Used in the Process of Selective Hydrogenation of Benzene to Cyclohexene

Abstract A series of Ru and Ru–Pd supported samples on deep desulfurization, especially thiophene-like compounds, were prepared by wet impregnation method. It indicated that the suitable Ru content on the support could be 1.5 wt % (Ru(1.5)/Al 2 O 3 ) under used experimental conditions. The effects of Pd on Ru(1.5)/Al 2 O 3 sample showed that the suitable content of Pd was probably 0.3 wt % (Ru(1.5)–Pd(0.3)/Al 2 O 3 ), and its breakthrough sulfur capacity could be reached to 1.244 g S /kg Cat . XPS and SEM characterization over fresh and used samples of Ru(1.5)–Pd(0.3)/Al 2 O 3 indicated that it had good stable structure. Furthermore, it indicated that the adsorption isotherm model of Freundlich equation was well fitted the experimental data ( R 2 = 0.989) and the parameters of Freundlich equation were obtained by linear regression.