A kinetic study of the liquid-phase hydrogenation of citral on Au/TiO2 and Pt-Sn/TiO2 thin films in capillary microreactors
Data(s) |
31/05/2011
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Resumo |
The kinetics of the liquid-phase hydrogenation of citral (3,7-dimethyl-2,6-octadienal) on Au/TiO2 and Pt-Sn/TiO2 thin films was studied in the temperature range 313-353 K and citral concentrations of 0.25-10.0 mol m(-3). The thin films were deposited onto the inner walls of silica capillaries with internal diameter of 250 mu m. First-order dependence on hydrogen pressure and near zero order dependence on citral concentration were observed for the initial rate of citral hydrogenation over the Pt-Sn/TiO2 and Au/TiO2 thin films. The Au/TiO2 catalyst prevents citronellal formation. The highest yield of unsaturated alcohols was obtained on the Pt-Sn/TiO2 film at a reaction temperature of 343 K, liquid residence time of 30 min and a citral conversion of 99%. (C) 2011 Elsevier B.V. All rights reserved. |
Identificador | |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/restrictedAccess |
Fonte |
Protasova , L N , Rebrov , E , Skelton , H E , Wheatley , A E H & Schouten , J C 2011 , ' A kinetic study of the liquid-phase hydrogenation of citral on Au/TiO2 and Pt-Sn/TiO2 thin films in capillary microreactors ' APPLIED CATALYSIS A-GENERAL , vol 399 , no. 1-2 , pp. 12-21 . DOI: 10.1016/j.apcata.2011.03.021 |
Palavras-Chave | #/dk/atira/pure/subjectarea/asjc/1500/1503 #Catalysis #/dk/atira/pure/subjectarea/asjc/1500/1508 #Process Chemistry and Technology |
Tipo |
article |