Liquid-phase hydrogenation of thiophenes on palladium sulfide catalysts

Article abstract of DOI:10.1007/BF02755377

The hydrogenation of thiophene, benzothiophene, and their alkyl derivatives over sulfide-containing catalysts of different compositions was studied. Palladium sulfide catalysts were active for the hydrogenation of thiophenes of different structure in hydrocarbons at 220°-300°C and 3-9.5 MPa. Thiophenes and benzothiophenes were close in reactivity. An increase in palladium sulfide concentration in the catalyst increased the reaction rate per gram of the catalyst, but only slightly influenced the specific reaction rate of hydrogenation calculated per gram of palladium. The specific activity of palladium sulfide supported on aluminosilicate was an order of magnitude higher than that of palladium sulfide without a support and the catalysts supported on the aluminum oxide and carbon. The aluminosilicate-supported catalyst was also more selective.