Abstract: A mixed metal oxide catalyst for selective hydrogenation of dienes comprising a Group VIII metal, a trivalent metal, a Group IA metal, a Group IVB metal, a Group IIB metal, two Group VIB metals and SiO2—Al2O3 as balance. The catalyst comprises 10-40 wt % of Group VIII metal, 5-30 wt % of trivalent metal, 0.1-8 wt % of Group IA metal, 0.1-8 wt % of Group IVB metal, 0.1-30 wt % of Group IIB metal, 5-50 wt % of two Group VIB metals and 10-30 wt % of SiO2—Al2O3, based on the catalyst in terms of oxide, and has 150-300 m2/g of specific surface area, 0.4-0.8 ml/g of pore volume.

Abstract: A mixed metal oxide catalyst for selective hydrogenation of dienes comprising a Group VIII metal, a trivalent metal, a Group IA metal, a Group IVB metal, a Group IIB metal, two Group VIB metals and SiO2-Al2O3 as balance. The catalyst comprises 10-40 wt % of Group VIII metal, 5-30 wt % of trivalent metal, 0.1-8 wt % of Group IA metal, 0.1-8 wt % of Group IVB metal, 0.1-30 wt % of Group IIB metal, 5-50 wt % of two Group VIB metals and 10-30 wt % of SiO2-Al2O3, based on the catalyst in terms of oxide, and has 150-300 m2/g of specific surface area, 0.4-0.8 ml/g of pore volume.

Abstract: An unsupported multi-metallic layered catalyst which comprises two or more Group VIB metals, one Group VIII metals, and one divalent metal, is used in ultra-deep hydrodesulfurization of diesel. And on oxide basis, it comprises 1-50 wt % Group VIII metals, 1-50 wt % divalent metals, and 5-60 wt % two Group VIB metals. Under hydrodesulfurization conditions, it can reduce sulfur content (in the form of 4, 6-DMDBT) of diesel from 500 wppm to less than 10 wppm. Besides, it also lowers the cost of catalysts.