TY - JOUR
T1 - Adsorption and oxidation of acetaldehyde on carbon supported Pt, PtSn and PtSn-based trimetallic catalysts by in situ Fourier transform infrared spectroscopy
AU - Beyhan, Seden
AU - Léger, Jean Michel
AU - Kadirgan, Figen
PY - 2013
Y1 - 2013
N2 - The adsorption and oxidation of acetaldehyde on carbon supported Pt, Pt90Sn10 and Pt80Sn10M10 (M = Ni, Co, Rh, Pd) catalysts have been investigated by using in situ Fourier transform infrared (FTIR) spectroscopy. The result revealed that Pt 90Sn10/C catalyst is not very efficient for the conversion of acetaldehyde to CO2 due to the weak adsorption of acetaldehyde in the presence of Sn. However, the addition of a third metal to Pt - Sn facilitates the C-C bond cleavage of acetaldehyde. It seems that acetaldehyde is adsorbed dissociatively on the surface of Pt80Sn10Ni 10/C, Pt80Sn10Co10/C, Pt 80Sn10Rh10/C catalysts, producing CH 3 and CHO adsorbate species, which can be further oxidized to CO 2. However, the pathway forming CO2 for Pt 80Sn10Pd10/C catalyst mainly originates from the oxidation of CH3CO species. Thus, the presence of third metal in the PtSn catalyst has a strong impact upon the acetaldehyde adsorption behaviour and its reaction products.
AB - The adsorption and oxidation of acetaldehyde on carbon supported Pt, Pt90Sn10 and Pt80Sn10M10 (M = Ni, Co, Rh, Pd) catalysts have been investigated by using in situ Fourier transform infrared (FTIR) spectroscopy. The result revealed that Pt 90Sn10/C catalyst is not very efficient for the conversion of acetaldehyde to CO2 due to the weak adsorption of acetaldehyde in the presence of Sn. However, the addition of a third metal to Pt - Sn facilitates the C-C bond cleavage of acetaldehyde. It seems that acetaldehyde is adsorbed dissociatively on the surface of Pt80Sn10Ni 10/C, Pt80Sn10Co10/C, Pt 80Sn10Rh10/C catalysts, producing CH 3 and CHO adsorbate species, which can be further oxidized to CO 2. However, the pathway forming CO2 for Pt 80Sn10Pd10/C catalyst mainly originates from the oxidation of CH3CO species. Thus, the presence of third metal in the PtSn catalyst has a strong impact upon the acetaldehyde adsorption behaviour and its reaction products.
KW - Acetaldehyde oxidation
KW - In situ infrared spectroscopy
KW - Platinum-tin catalyst
KW - Trimetallic catalyst
UR - http://www.scopus.com/inward/record.url?scp=84879292778&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2013.05.112
DO - 10.1016/j.jpowsour.2013.05.112
M3 - Article
AN - SCOPUS:84879292778
SN - 0378-7753
VL - 242
SP - 503
EP - 509
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -