Ni和Ru对CoP加氢脱硫催化剂催化性能的影响

以RuCl3·3H2O为Ru源、Ni(NO3)2 ·6H2O为Ni源,采用非平衡氢等离子体还原法分别制得掺入助剂Ru、Ni的体相CoP催化剂.XRD表征结果表明,Ru的掺入可以使Co、P的氧化物前体在较低电压下还原为CoP.对不同Ni、Ru掺入比例的体相催化剂在固定床上进行加氢脱硫(HDS)活性评价,以二苯并噻吩(DB...

EFFECT OF Ni/Ru ON THE HYDRODESULFURIZATION PERFORMANCE OF CoP CATALYST

CoP bulk catalysts containing Ru and Ni respectively were prepared by means of non-equilibrium hydrogen plasma reduction, with RuCl3·3H2O and Ni (NO3)2·6H2O as Ru source and Ni source, respectively. XRD characterization indicated that CoP catalysts could be obtained at a lower voltage by adding Ru promoter. The hydrodesulfurization (HDS) performance of CoP catalysts with various contents of Ru and Ni was evaluated in a fixed bed reactor using DBT as model compound. The results show that adding Ru and Ni can significantly improve the HDS activity of CoP catalyst, and the optimal adding rate for Ru and Ni is 0.10% and 5%, respectively. The optimal conversion of DBT over CoP catalyst with 0.10% Ru and CoP catalyst with 5% Ni was 92.0% and 79.8%, respectively, which were 33.2 and 21.0 percentage points higher than that of CoP catalyst without promoter. The incorporation of Ru enhances the hydrogenation function of CoP catalyst, and the role of Ni leads the reactions to favor direct-desulfurization (DDS) path.