Environmental Engineering Reference
In-Depth Information
Figure 18.18
O
2
chemistry of biomimetic ORR catalysts.
5cO
2
with 2 equivalents of CoCp
2
)? (ii) How can these results be translated to electro-
catalytic reduction in aqueous electrolytes?
Reactivity of compounds 1 and 2c with O
2
is remarkably different from that of 5c,
5cCo, and 8 (Fig. 18.18). Metalloporphyrin 2c binds O
2
reversibly at room tempera-
ture under anhydrous conditions to produce a diamagnetic ferric - superoxo/Cu
I
adduct as demonstrated by resonance Raman spectroscopy using
16
O
2
and
18
O
2
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