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Principles of Fischer–Tropsch synthesis—Constraints on essential reactions ruling FT-selectivity

Paper ID Volume ID Publish Year Pages File Format Full-Text
54667 47019 2013 12 PDF Available
Title
Principles of Fischer–Tropsch synthesis—Constraints on essential reactions ruling FT-selectivity
Abstract

•Olefins in Fischer-Tropsch synthesis.•Basic reactions and active sites in hydrocarbon formation through Fischer-Tropsch synthesis.•Self-organization of Fischer-Tropsch with cobalt- and iron catalysts.•Constraints and frustrations as FT-principles.•Dynamic cobalt active sites in Fischer-Tropsch synthesis.

Fischer–Tropsch synthesis has been performed with iron- and cobalt catalysts at varied conditions, and selectivity determined for steady state and the initial time of selforganization. Product composition has been analyzed in detail with high temporal resolution. Using the kinetic model of non-trivial surface polymerization, information about elemental reactions and their role in the reaction mechanism has been attained.Among the ruling principles, distinct constraints appear to be essential, as frustration of methanation, of desorption of chains in relation to their prolongation and of paraffin formation in relation to olefin desorption. Spatial constraints on the growth sites appear to control linear growth in relation to chain branching and also branching probability in dependence of chain length.With cobalt, selectivity and respectively the structure of active sites appear to be dynamic, to develop under reaction conditions and to respond to changes of conditions. With carbided iron, selectivity and respectively active sites appear to be of static nature. Information about secondary olefin reactions is also obtained as important for producing olefins through Fischer–Tropsch synthesis.

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Keywords
Fischer–Tropsch synthesis; Product composition; Spatial constraints on sites; Reaction mechanism; Iron and cobalt as catalysts; Selforganization
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Principles of Fischer–Tropsch synthesis—Constraints on essential reactions ruling FT-selectivity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 214, 1 October 2013, Pages 140–151
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us