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Cobalt–Aluminum co-Precipitated Catalysts and Their Performance in the Fischer–Tropsch Synthesis Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169
Output data Year: 2001, Volume: 168, Number: 1-2, Pages: 193-207 Pages count : 15 DOI: 10.1016/S1381-1169(00)00529-X
Tags Alumina, Cobalt, Fischer-Tropsch, Metal-support interaction, Spinels
Authors Khassin Alexander A. 1 , Yurieva Tamara M. 1 , Kustova Galina N. 1 , Itenberg Izabella Sh. 1 , Demeshkina Margarita P. 1 , Krieger Tamara A. 1 , Plyasova Lyudmila M. 1 , Chermashenczeva Galina K. 1 , Parmon Valentin N. 1
Affiliations
1 Boreskov Institute of Catalysis, 5, Pr. Lavrentieva, Novosibirsk 630090, Russia

Abstract: Cobalt–aluminum catalysts were prepared using either Co2+ precipitation onto freshly prepared Mg–Al or Zn–Al hydrotalcite (promoted samples) or co-precipitation of Co2+ and Al3+ (non-promoted samples). The evolution of initial hydrotalcite structure was monitored during its calcination and reductive treatment. It has been shown that, at moderate temperatures, hydrotalcites results decomposition yields a Co oxide phase supported by a highly defective inverted spinel-like structure. Cations Co2+ enter the support structure, and occupy both tetrahedral and octahedral positions. Octahedron coordinated Co species are reduced at 580–620°C. After the reduction at 470–480°C catalyst phase composition shows Co0 supported on inverted spinel-like structure, which contains Co2+ in the octahedral coordination. Further reduction at 600°C transforms the support to ‘ideal’ spinel, which contains no octahedron coordinated Co2+. Chemical properties of the Co–Al catalysts, including their performance in the Fischer–Tropsch synthesis (FTS), were found to depend on the catalyst reduction temperature, and thus on the support structure. Metal-support interaction is supposed to explain the observed properties of metallic cobalt.
Cite: Khassin A.A. , Yurieva T.M. , Kustova G.N. , Itenberg I.S. , Demeshkina M.P. , Krieger T.A. , Plyasova L.M. , Chermashenczeva G.K. , Parmon V.N.
Cobalt–Aluminum co-Precipitated Catalysts and Their Performance in the Fischer–Tropsch Synthesis
Journal of Molecular Catalysis A: Chemical. 2001. V.168. N1-2. P.193-207. DOI: 10.1016/S1381-1169(00)00529-X publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Jun 21, 2000
Accepted: Nov 6, 2000
Published print: Mar 1, 2001
Published online: Mar 1, 2001
Identifiers:
publication_identifier.wos_identifier_type WOS:000167526500024
publication_identifier.scopus_identifier_type 2-s2.0-0035263483
publication_identifier.rinz_identifier_type 13375721
publication_identifier.accession_number_identifier_type 2001:167387
publication_identifier.chemical_accession_number_identifier_type 134:268533
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