Iron nickel Fischer-Tropsch synthetic catalyst and preparation thereof

Abstract

The invention discloses a Fischer-Tropsch synthesis iron-based catalyst containing nickel, wherein Fe:Ni:K:Cu:SiO2 equals to 100:0.01-40:0.1-15:0.1-15:2-50. Solution containing metals of iron, nickel and copper and soda solution are carried out coprecipitation, which is adopted by the invention, after precipitation paste and solution containing silicon are carried out size mixing, serum acquired is transferred into a spray dryer for drying and molding, and then baking is carried out to obtain the catalyst. The catalyst of the invention is suitable for low temperature Fischer-Tropsch synthesisreaction and has the advantages of good activity and selectivity, high product conversion rate, mild reaction conditions, etc.; in addition, the preparation process of the invention is simple and thecatalyst prepared has better granularity and intensity, which is suitable for a process of slurry-bed Fischer-Tropsch reaction.

Description

technical field

[0001] The invention relates to a Fischer-Tropsch synthesis iron-based catalyst, in particular to a nickel-containing Fischer-Tropsch synthesis iron-based catalyst. Background technique

[0002] In 1923, the Kaiser Wilhekm Coal Research Institute in Germany used alkali-added iron scraps as a catalyst in F. Fischer and H. Tropsch. Under the conditions of temperature 400-450 ° C and pressure 10-15 Mpa, CO and H 2 The reaction produces a mixed liquid of hydrocarbons and oxygenates. From 1925 to 1926, the two men used iron or cobalt catalysts to obtain hydrocarbon products that hardly contained oxygen-containing compounds at normal pressure and 250-300°C. Since then, the synthesis gas (CO and H 2 ) The method of synthesizing hydrocarbon or alcohol fuel under catalysis is called Fischer-Tropsch synthesis.

[0003] There are two types of catalysts for Fischer-Tropsch synthesis in industry, namely iron-based catalysts and cobalt-based catalysts, and the research ...