Further support for the two-mechanisms hypothesis of Fischer–Tropsch synthesis

The hypothesis of two incompatible mechanisms of chain growth finds strong support by detailed interpretation of CH 2N 2 co-feeding experiments and the selectivity of branched hydrocarbons. Deviations of the carbon number distribution from the strict superposition of two ASF distributions are interp...

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Bibliographic Details
Published in:Applied catalysis. A, General General, 2010-02, Vol.374 (1), p.120-125
Main Authors: Gaube, J., Klein, H.-F.
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Exact sciences and technology
Fischer–Tropsch synthesis
General and physical chemistry
Mechanisms
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:The hypothesis of two incompatible mechanisms of chain growth finds strong support by detailed interpretation of CH 2N 2 co-feeding experiments and the selectivity of branched hydrocarbons. Deviations of the carbon number distribution from the strict superposition of two ASF distributions are interpreted by the subsequent chain growth of readsorbed 1-alkenes via the mechanism characterized by CH 2-insertion. The recently proposed hypothesis of two incompatible mechanisms of chain growth based on CH 2- and CO-insertion is furthermore supported by a detailed interpretation of the 13CH 2N 2 co-feeding experiments of Maitlis and co-workers and of the selectivity of branched hydrocarbons. The carbon number distribution is discussed considering in particular the role of readsorption and incorporation of 1-alkenes and its subsequent chain growth.
ISSN:0926-860X
1873-3875
DOI:10.1016/j.apcata.2009.11.039