High active and high stable catalyst of ferro manganese Fischer-Tropsch synthesis and preparation method

Abstract

A Fe-Mn catalyst with high activity and stability for Fischer-Tropsch synthesis contains Fe, Mn, Ca, K and SiO2. It is prepared through codepositing of the assistant containing Fe, Mn and Ca, silicon sol and ammonia water, feeding the deposit slurry and the catalyst slurry prepared from potassium carbonate solution in drier, drying and calcining.

Description

Technical field:

[0001] The invention belongs to a preparation method of a catalyst, in particular to a preparation method of an iron-manganese catalyst with high activity and high stability used in Fischer-Tropsch synthesis. technical background:

[0002] Fischer-Tropsch synthesis refers to synthesis gas (CO+H 2 ) catalyzes the reaction of synthesizing hydrocarbon liquid fuels on a catalyst. Since the 1950s, the large-scale industrialization of coal-based synthetic liquid fuels has been realized in Sasol Company in South Africa (Dry, M.E., Catalysis Today, 1990, 6(3) 183-206) . Fischer-Tropsch synthesis usually uses iron-based catalysts, and the reactors used include fixed-bed reactors, fluidized-bed reactors and slurry-bed reactors. Due to the high production efficiency of the slurry bed reactor, the catalyst is easy to load and unload, and the low H 2 Coal-based syngas with a CO / CO ratio shows great technical advantages and is currently the most important synthetic liq...