TY - JOUR
T1 - Reactions of ethanol over metal oxides
AU - Idriss, H.
AU - Seebauer, E. G.
N1 - Funding Information:
E.G.S. gratefully acknowledges a Sloan Foundation Fellowship. This work was partially supported by the National Science Foundation under a Presidential Young Investigator Award.
PY - 2000/3/1
Y1 - 2000/3/1
N2 - The reaction of ethanol over a series of oxides (Fe2O3, Fe2O3/CaO, Fe3O4, TiO2, CaO, and SiO2) has been investigated. The main reaction product in all cases is acetaldehyde, with secondary products acetone and ethyl acetate. At 473 K, the rate constant k decreases according to the series Fe2O3 > Fe3O4 > CaO > TiO2 >> SiO2. Titration of basic sites by CO2 adsorption at room temperature shows that the reaction rate can be successfully normalised by basic site density for oxides that adsorb CO2 except for CaO. Acetone production, presumably via acetate ketonization, is highest over TiO2 while ethyl acetate formation, by Tishchenko reaction, is highest over Fe2O3. (C) 2000 Elsevier Science B.V.
AB - The reaction of ethanol over a series of oxides (Fe2O3, Fe2O3/CaO, Fe3O4, TiO2, CaO, and SiO2) has been investigated. The main reaction product in all cases is acetaldehyde, with secondary products acetone and ethyl acetate. At 473 K, the rate constant k decreases according to the series Fe2O3 > Fe3O4 > CaO > TiO2 >> SiO2. Titration of basic sites by CO2 adsorption at room temperature shows that the reaction rate can be successfully normalised by basic site density for oxides that adsorb CO2 except for CaO. Acetone production, presumably via acetate ketonization, is highest over TiO2 while ethyl acetate formation, by Tishchenko reaction, is highest over Fe2O3. (C) 2000 Elsevier Science B.V.
KW - Ethanol
KW - Metal oxides
KW - Reactions
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U2 - 10.1016/S1381-1169(99)00297-6
DO - 10.1016/S1381-1169(99)00297-6
M3 - Article
AN - SCOPUS:0034145087
SN - 1381-1169
VL - 152
SP - 201
EP - 212
JO - Journal of Molecular Catalysis A: Chemical
JF - Journal of Molecular Catalysis A: Chemical
IS - 1-2
ER -