Environmental Engineering Reference
In-Depth Information
TABLE 7.3 Energetic Data for the Bi-Pt(111) [Blais et al., 2002] and As-Pt(111) [Blais et al., 2001] Oxidation Processes
in 0.5 M H
2
SO
4
Solution
E
p
(V vs. SHE)
DS
0
(J/mol K)
DG
0
(kJ/mol)
DH
0
(kJ/mol)
a
DH
f
0
(kJ/mol)
a
dE
an
/dT
(mV/K)
dE
cat
/dT
(mV/K)
Bi-Pt(111)
0.60
20.288
20.237
56, 46
116 (SHE)
133, 129
2439, 2443
As-Pt(111)
b
0.55
0.355
0.536
0.543
0.726
2103, 2155
2157, 2210
160 (SHE)
191, 184
174, 166
2666, 2674
2684, 2691
a
DH
0
and DH
f
0
are the enthalpies of formation of the surface hydroxide according to (7.14) and (7.18), respectively.
b
For As, the different values of dE/dT are due to the splitting of the peak into two peaks with slightly different temperature dependences.
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