Abstract
The synergetic effect between Ni2P/Al2O3 and MoS2/Al2O3 catalysts on their performance in the hydrodenitrogenation of quinoline was proved by a simplified experimental design and explained by the remote control model through a migration of hydrogen spillover. The results indicated that the synergism factor of Ni2P and MoS2 is slightly higher than that of NiSx and MoS2; it decreases with the increase of reaction temperature. Since the spillover hydrogen with Ni2P can increase the amount of hydrogenation active sites of MoS2, the hydrogenation rate of 1,2,3,4-tetrahydroquinoline and 5,6,7,8-tetrahydroquinoline to decahydroquinoline over the Ni2P/Al2O3 and MoS2/Al2O3 catalyst system is then greatly enhanced; as a result, Ni2P is a superior promoter for MoS2 catalyst for hydrodenitrogenation.
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