Abstract
A ruthenium catalyst supported on the cheap bentonite with high activity has been prepared by impregnation-hydrothermal method and characterized by TEM, XRD, and XPS. The catalytic performance for selective hydrogenation of benzene to cyclohexene was investigated. The effect of additives NaOH and ZnSO 4 on the catalytic performances was studied. It was demonstrated that both NaOH and ZnSO 4 could significantly enhance the selectivity to cyclohexene over Ru/bentonite catalyst. The influences of reaction temperature, pressure, amounts of catalyst and additives, and reaction time on the selective hydrogenation of benzene were studied in detail.
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