Electrochemical promotion by potassium of Rh-catalysed Fischer-Tropsch synthesis at high pressure

Andrew Urquhart, F.J. Williams, RM Lambert

Research output: Contribution to journalJournal articleResearchpeer-review


Rh-catalysed Fischer-Tropsch synthesis at high pressures exhibits reversible electrochemical promotion by potassium. At 473 K and 14 bar, 43 products were detected, comprising alkanes, alkenes and primary alcohols. Potassium increased selectivity towards alkenes and primary alcohols as a result of actual increases in the rates of formation of these products - an apparently unprecedented observation. Alkane formation was progressively suppressed by added alkali. These findings are discussed in terms of K-induced acceleration and retardation of possible rate limiting steps for alkene and alkane formation, respectively. Plausible mechanisms are discussed.
Original languageEnglish
Issue number1-2
Pages (from-to)137-141
Number of pages5
Publication statusPublished - 2005
Externally publishedYes

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