Liquid-phase hydrogenation of thiophenes on palladium sulfide catalysts |
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Authors: | A A Zirka A V Mashkina |
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Institution: | (1) Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, 630090 Novosibirsk, Russia |
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Abstract: | Palladium sulfide catalysts are active for the hydrogenation of thiophenes of different structure in hydrocarbons at 22O-30O‡C
and 3.0-9.5 MPa. Thiophenes and benzothiophenes are close in reactivity. An increase in palladium sulfide concentration in
the catalyst leads to an increase in the reaction rate per 1 g of the catalyst but has only a slight effect on the specific
reaction rate of hydrogenation calculated per 1 g of Pd. The specific activity of palladium sulfide supported on aluminosilicate
is one order of magnitude higher than that of PdS without a support and the catalysts supported on the aluminum oxide and
carbon. The aluminosilicate-supported catalyst is also more selective. |
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