A kind of transition metal phosphide hydrogenation catalyst and preparation method thereof

Abstract

The invention relates to a transition metal phosphide hydrogenation catalyst and a preparation method thereof. An inorganic porous material is used as a carrier for loading active components and a metal cocatalyst; the active components comprise tungsten, nickel and phosphorus, the total weight of tungsten and nickel oxides is 1-60% of that of the catalyst, the molar ratio of the tungsten and nickel material is 1:10-10:1, and total molar ratio of the total amount of tungsten and nickel to phosphorus is 1:4-6:1; the metal catalyst is selected from the group consisting of cerium and / or titanium element; the content of the amorphous silicon aluminum material in the inorganic porous material is 3-75 wt.% of the carrier; the content of macroporous alumina is 10-80 wt.% of the carrier; the content of a mesoporous molecular sieve is 0-50 wt.% of the carrier; the content of a binder is 1-15 wt.% of the carrier; and the content of metal cocatalyst is 0.1-30 wt.% of the catalyst. The catalyst can effectively remove the sulfur-containing compounds and nitrogen-containing compounds in petroleum fractions, so as to reach the purpose of depth desulfurization and denitrification.

Description

technical field [0001] The invention relates to a distillate oil hydrodesulfurization and denitrogenation catalyst, in particular to a transition metal phosphide hydrogenation catalyst and a preparation method thereof. Background technique [0002] In the oil refining industry, hydrofining has become the preferred means of cleaning oil products, and its main purpose is to remove sulfur and nitrogen impurities in oil products. In the process of hydrofining, the traditional industrial catalysts are mainly Co-Mo, Ni-Mo, Ni-W, Ni-Mo-W, Co-Mo-Ni catalysts, which exist in the form of sulfide, sometimes Co-catalysts such as phosphorus will also be added to the catalyst. Although this type of catalyst has certain hydrodesulfurization and denitrogenation activities, with the current increasingly stringent environmental protection regulations and the increasing severity of crude oil, this type of traditional hydrogenation Catalysts can no longer meet the requirements, and it is urgen...

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Problems solved by technology

In the process of hydrofining, the traditional industrial catalysts are mainly Co-Mo, Ni-Mo, Ni-W, Ni-Mo-W, Co-Mo-Ni catalysts, which exist in the form of sulfide, sometimes Co-catalysts such as phosphorus will also be added to the catalyst. Although this type of catalyst has certain hydrodesulfurization and denitrogenation activities, with the current increasingly stringent environmental protection regulations and the increasing severity of crude oil, this type of traditional hydrogenation Catalysts can no longer meet the requirements, and it is urgent to develop more efficient hydrogenation catalysts

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