Environmental Engineering Reference
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Figure 11.8 (a) SNIFTIR spectra of the species coming from methanol adsorption and oxi-
dation at a Pt/C electrode; 0.1 M HClO 4 þ 0.1 M CH 3 OH; 25 8C. (b) SNIFTIR spectra of
the species coming from ethanol adsorption and oxidation on a Pt/C electrode; 0.1 M
HClO 4 þ 0.1 M C 2 H 5 OH; 25 8C.
of an adsorbed acetyl species (CH 3 CHO ads ), which can then lead to the formation of
acetaldehyde and acetic acid as final products. The acetyl species can also be disso-
ciated at the electrode surface, and, after reaction with adsorbed OH coming from
water, may produce CO 2 . This acetyl species has already been proposed in the case
of bulk Pt [Perez et al., 1989].
The addition of Sn to Pt increases the activity of ethanol electro-oxidation
and single DEFC performance [Rousseau et al., 2006; Zhou et al., 2004a; Vigier
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