TY - JOUR
T1 - In situ FTIR investigation of acetic acid electrooxidation on carbon supported Pt-Sn based trimetallic catalysts
T2 - Influence of the nature of the third metal
AU - Beyhan, Seden
AU - Léger, Jean Michel
AU - Kadirgan, Figen
N1 - Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2014/12/1
Y1 - 2014/12/1
N2 - The effect of adding a third metal (Ni, Co, Pd, Rh) to Pt-Sn/C catalyst has been investigated for the adsorption and oxidation of acetic acid in acidic medium using in situ Fourier transform infrared (FTIR) spectroscopy. The results showed that the decomposition of acetic acid on the surface leads to the formation of different intermediate species and products such as acetate, acetyl, carbonate, CO and CO 2 . The reaction pathway of CO 2 production proceeds via the formation of acetyl or carbonate through surface acetate species. It has been found that the selectivity of the acetate was enhanced by the addition of any third metal. However, the presence of Pd or Co increases the relative intensity of IR band for CO 2 . This is probably due to success in facilitating of the C-C bond cleavage of acetyl. On the other hand, the conversion of acetate to carbonate is strongly affected by the adsorbed water, as is evident from the pronounced changes in the OH stretching region with the presence of Pd or Ni.
AB - The effect of adding a third metal (Ni, Co, Pd, Rh) to Pt-Sn/C catalyst has been investigated for the adsorption and oxidation of acetic acid in acidic medium using in situ Fourier transform infrared (FTIR) spectroscopy. The results showed that the decomposition of acetic acid on the surface leads to the formation of different intermediate species and products such as acetate, acetyl, carbonate, CO and CO 2 . The reaction pathway of CO 2 production proceeds via the formation of acetyl or carbonate through surface acetate species. It has been found that the selectivity of the acetate was enhanced by the addition of any third metal. However, the presence of Pd or Co increases the relative intensity of IR band for CO 2 . This is probably due to success in facilitating of the C-C bond cleavage of acetyl. On the other hand, the conversion of acetate to carbonate is strongly affected by the adsorbed water, as is evident from the pronounced changes in the OH stretching region with the presence of Pd or Ni.
KW - Acetic acid electrooxidation
KW - FTIR spectroscopy
KW - PtSn-based trimetallic catalyst
UR - http://www.scopus.com/inward/record.url?scp=84912061813&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2014.10.051
DO - 10.1016/j.apsusc.2014.10.051
M3 - Article
AN - SCOPUS:84912061813
SN - 0169-4332
VL - 321
SP - 426
EP - 431
JO - Applied Surface Science
JF - Applied Surface Science
ER -