FIELD: chemistry; technological processes.
SUBSTANCE: invention relates to a method of producing catalyst precursor. Method comprises contacting a catalyst support material with a modifying component precursor in an impregnating liquid medium, optionally calcining modifying component containing catalyst support material at a temperature above 100 °C to obtain a modified catalyst support and introduction of cobalt (Co) precursor compound as an active catalyst component on and/or in (i) catalyst support material before contact of catalyst support material with precursor modifying component, (ii) modifying component containing material of catalyst support and/or (iii) modified catalyst support, by means of which a catalyst precursor is obtained. Liquid impregnation medium contains a mixture of water and organic liquid solvent for modifying component precursor, wherein solvent contains a liquid organic compound, which includes at least one heteroatom selected from oxygen or nitrogen, said mixture contains at least 2.5 % by volume of water, but less than 12 % by volume of water with respect to volume of liquid impregnation medium. Catalyst support material is selected from a group consisting of a catalyst support precursor, which can be turned into a catalyst support by calcining, wherein catalyst support is in form of metal oxide, which is a metal oxide selected from a group consisting of Al, Si, Ti, Mg, Zr and Zn, and catalyst support, selected from a group consisting of aluminium oxide in form of one or more aluminium oxides, silicon dioxide (SiO2), titanium dioxide (TiO2), magnesium oxide (MgO), zirconium oxide (ZrO2), zinc oxide (ZnO) and mixtures thereof. Modifying component precursor contains a compound of modifying component, selected from a group consisting of Si, Zr, Ti, Cu, Zn, Mn, Ba, Ni, Al, V, W, La and mixtures of two or more thereof, by means of which modifying component containing material of catalyst support is obtained. Invention also discloses a method of producing a catalyst and a method for synthesis of hydrocarbons.
EFFECT: invention increases amount of modifying component, which is deposited on support, and increases resistance to abrasion of modified support.
11 cl, 4 dwg, 7 tbl, 41 ex
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Authors
Dates
2016-12-20—Published
2012-11-30—Filed