title: Mechanistic role of water on the rate and selectivity of Fischer-Tropsch synthesis on ruthenium catalysts.
abstract: Water increases Fischer-Tropsch synthesis (FTS) rates on Ru through H-shuttling processes. Chemisorbed hydrogen (H*) transfers its electron to the metal and protonates the O-atom of CO* to form COH*, which subsequently hydrogenates to *HCOH* in the kinetically relevant step. H2 O also increases the chain length of FTS products by mediating the H-transfer steps during reactions of alkyl groups with CO* to form longer-chain alkylidynes and OH*.
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California, 94720 (USA) http://iglesia.cchem.berkeley.edu/
authors.forename: David D
authors.initials: DD
authors.lastname: Hibbitts
authors.forename: Brett T
authors.initials: BT
authors.lastname: Loveless
authors.forename: Matthew
authors.initials: M
authors.lastname: Neurock
authors.forename: Enrique
authors.initials: E
authors.lastname: Iglesia
keywords: Fischer-Tropsch synthesis; density functional calculations; heterogeneous catalysis; hydrogenation; kinetics