Catalytic Properties of Bimetallic Catalysts Based on Binary Complexes of Transition Metals in Fischer-Tropsch Synthesis | Sciact - CRIS-system of Boreskov Institute of Catalysis

Catalytic Properties of Bimetallic Catalysts Based on Binary Complexes of Transition Metals in Fischer-Tropsch Synthesis Full article

Journal

Chemistry for Sustainable Development
ISSN: 1817-1818

Output data

Year: 2007, Volume: 15, Number: 6, Pages: 673-683 Pages count : 11

Authors

Khassin A.A. ¹ , Pechenyuk S.I. ² , Domonov D.P. ² , Minyukova T.P. ¹ , Chermashentseva G.K. ¹ , Kustova G.N. ¹ , Plyasova L.M. ¹

Affiliations

1	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 5, Novosibirsk 630090 (Russia)
2	Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Centre of the Russian Academy of Sciences, Ul. Fersmana 26A, Apatity 184209 (Russia)

The possibility to prepare bimetallic catalysts Fe-Ni, Fe-Co and Co-Cu through thermolysis of binary complex salts involving a complex cation of one metal and a complex anion of other one is discussed, and their catalytic properties in Fischer-Tropsch synthesis are presented. Our study revealed that deposition of binary complex salts having composition [Ni(NH3)6]3[Fe(CN)6]2, [Co(NH3)6][Fe(CN)6] and [Co(NH3)6]2C2O4[Cu(C2O4)2]2 on to the surface of aluminium hydroxide and subsequent thermolysis of the obtained composition give the chance to have metallic particles of size 15-40 nm fixed on the surface of aluminium oxide. In the case of binary complexes Ni-Fe and Co-Fe, the formation of bimetallic particles of size 15-16 nm and respective structures FCC and BCC is observed. Break-up of complexes proceeds in several sequential exothermic stages. The catalytic properties of bimetallic particles Fe-Co of BCC structure, which are prepared by thermolysis of [Co(NH3)6][Fe(CN)6] + Al(OH)3 composition, differ essentially from the literature data for Co-Fe catalysts by the reduced activity of the prepared particles with respect to the secondary processes for hydrogenation of olefins. This feature manifests itself in the extremely high selectivity of the process in relation to olefines and its anomalous temperature dependence. A rise in the process pressure up to 10-20 atm leads to significant changes in catalytic properties of bimetallic Co-Fe catalysts, among them the loss of selectivity in relation to olefins and the decrease in the rate of secondary process of vapour conversion of CO. The pressure dependence of process passing character is caused by variation in structure of catalytically active component under the action of reagents.

Khassin A.A. , Pechenyuk S.I. , Domonov D.P. , Minyukova T.P. , Chermashentseva G.K. , Kustova G.N. , Plyasova L.M.
Catalytic Properties of Bimetallic Catalysts Based on Binary Complexes of Transition Metals in Fischer-Tropsch Synthesis
Chemistry for Sustainable Development. 2007. V.15. N6. P.673-683. РИНЦ

Хасин А.А. , Печенюк С.И. , Домонов Д.П. , Минюкова Т.П. , Чермашенцева Г.К. , Кустова Г.Н. , Плясова Л.М.
Каталитические свойства биметаллических катализаторов на основе двойных комплексов переходных металлов в синтезе Фишера – Тропша
Химия в интересах устойчивого развития. 2007. Т.15. №6. С.683-693. RSCI РИНЦ ANCAN

Submitted:	Oct 19, 2006
Accepted:	Oct 24, 2007

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