Effect of Co on HDS Activity of Alumina-supported Heteropolymolybdate

Abstract

The hydrotreating CoMo/c-Al 2 O 3 catalysts (12 wt% Mo and 0.7-5.0 wt% Co) have been prepared by impregnation. The CoMo catalysts obtained from Anderson heteropolyoxomolybdate (NH 4 ) 3 [Co(OH) 6 Mo 6 O 18 ]Á 7H 2 O has been investigated by nitrogen physisorption, XRD, UV-Vis DRS, FT-IR, and TPR. The results are discussed in relation to the catalytic activity for the thiophene and 1-benzothiophene reactions. The influence of Co content on both the phase composition and catalytic activity in the HDS reactions has been shown. The effect of Co on the activity in the HDS reactions depends on its previously loaded amount. It is the most pronounced with the catalyst having Co/Mo ratio equal to 0.27.

Secondary Synthesis of Microporous Heteroatoms Y Zeolite and their Hydrodesulfurization Properties for Model Fuel

“…Some kinds of catalysts have been reported for the removal of sulfur compounds from the diesel fuels, gasoline, jet fuels or model fuels. New kinds of support materials such as mixed oxides [6][7][8][9], zirconia [10], titania [11] and zeolite [12,13], novel catalytically active metals such as Co [14], Ru [15], Re, Pt, Pd [16,17] and new kinds of materials such as Mo nitride [18] and carbide [19] are strong candidates for future types of HDS catalysts with high performances.…”