| 简介 |
FIELD : chemistry.
SUBSTANCE : invention relates to methods of obtaining catalyst precursor, catalyst of Fischer-Tropsch synthesis and to method of Fischer-Tropsch synthesis itself. Method of obtaining precursor of catalyst of Fischer-Tropsch synthesis includes stages at which : (i) Fe (II) carboxilate solution is used, (ii) if molar ratio of carboxyl and carboxylate groups, which come into reaction or are capable of coming into reaction with iron, and Fe (II) in solution, used at stage (i), does not constitute, at least, 3 : 1, source of carboxyl or carboxilate group is added into the solution, for said molar ratio to constitute, at least, 3 : 1, until Fe (II) carboxylate oxidation is over at the following stage (iii), (iii) Fe (II) carboxylate is processed by oxidant to convert it into Fe (III) carboxilate solution in conditions, which exclude such oxidation simultaneously with dissolution of Fe(0), (iv) hydrolysis of Fe(III) carboxylate, obtained at stage (iii) and precipitation of one or several products of F(III) hydrolysis are carried out, (v) one or several products of hydrolysis, obtained at stage (iv) are reduced, and (vi) source of activator in form of soluble salt of transition metal and chemical activator in form of soluble salt of alkaline metal or alkaline-earth metal are added in the process pr after realisation of any of preceding stages to obtain precursor of catalyst of Fischer-Tropsch synthesis.
EFFECT : achievement of complete dissolution of Fe(0) in acidic solution, source of activator can be introduced before Fe(III) carboxylate hydrolysis.
15 cl, 7 dwg, 1 tbl, 14 ex |
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