CATALYST OF FISHER-TROPSH SYNTHESIS BASED ON COBALT COVERED WITH MESOPOROUS MATERIALS AND METHOD OF ITS PRODUCTION

摘要

FIELD: chemistry.;SUBSTANCE: Fischer-Tropsch synthesis catalyst based on cobalt covered with a mesoporous material and method for its production are described. The catalyst comprises a silica medium, rich in the surface-active component of cobalt and a selective promoter of zirconium; from the outside, the active component of cobalt and a selective promoter of zirconium is covered with a layer of shell mesoporous material. The production method includes obtaining silica media saturated with zirconium, obtaining the primary Fischer-Tropsch synthesis catalyst based on cobalt on the silica medium, the preparation of the solution precursor of the mesoporous materials, further immersion, crystallization, washing, drying, and calcining to obtain the Fischer-Tropsch synthesis catalyst based on cobalt with a coating of the mesoporous materials. The active ingredient is covered and protected by a layer of the mesoporous material shell, the thickness of the shell is regulated, the catalyst has a long lifetime, a high reactivity, and a good stability. The pore structure of the mesoporous materials provides a channel for diffusion of CO and H₂, the selectivity with respect to C₅⁺ is high, and the selectivity with respect to methane is low. The catalyst is particularly suitable for slurry bubble column reactors or hull reactors with continuous mixing.;EFFECT: increase in the catalyst activity.;22 cl, 7 dwg, 3 tbl, 8 ex