Previous metal modified catalyst for fischer-tropsch synthesis and preparation method thereof

Abstract

The invention provides a previous metal modified catalyst for fischer-tropsch synthesis and a preparation method thereof .Silicon oxide serves as a catalyst carrier, cobalt serves as an active ingredient, zirconium and lanthanum serve as carrier modified auxiliaries, rhenium, ruthenium, rhodium and platinum serve as precious metal auxiliaries, and the mass percentage of the components is 100%; the active ingredient accounts for 10-40%; the carrier modified auxiliaries account for 0.2-3.2%; the precious metal auxiliaries account for 0.05-2.0%; the balance is the catalyst carrier .The preparation method of the precious metal modified catalyst includes the following steps of 1 preparation of raw materials; 2, processing of the catalyst carrier; 3, modification of the catalyst carrier; 4, drying; 5, calcination; 6, preparation of the catalyst, and the previous metal modified catalyst is obtained .The previous metal modified catalyst has important use significance and is high in selectivity, high in stability, high in additional value, high in mechanical strength, small in catalyst damage rate and long in service life, the preparation method which is reasonable in step and convenient to operate is provided, and industrialized production prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, and relates to a preparation method and molding technology of an industrial catalyst carrier, in particular to a noble metal modified catalyst for synthesizing heavy hydrocarbons from synthesis gas Fischer-Tropsch and a preparation method thereof. Background technique [0002] Syngas (H 2 / CO) The method of synthesizing liquid hydrocarbons by catalytic reaction is called "Fischer-Tropsch Synthesis". Fischer-Tropsch synthesis technology and the subsequent product refining process can convert synthesis gas into clean fuels and other high value-added chemical raw materials and products on a large scale, and synthesis gas can be derived from coal, natural gas, shale gas, coal bed methane, Catalytic conversion technology of raw materials such as biomass. As the world's petroleum resources are increasingly shrinking, this path of non-petroleum technology to synthesize bulk chemical raw m...

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Problems solved by technology

However, the cost of the Fischer-Tropsch synthesis catalyst is relatively high; in addition, the Fischer-Tropsch synthesis Co-based catalyst has higher requirements on the strength of the catalyst to prevent the catalyst from being broken and causing the blockage of the reaction tube and the increase in the pressure difference of the reactor.