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Possible pathways for CO* + O2* reaction over gold including those cocatalyzed with water.54 Reactants and products are in yellow, and water as cocatalyst is in blue. Arrow colors mark four different mechanisms: purple, dissociative mechanism; orange, associative mechanism; blue, water catalyzed mechanism via dissociation of OOH*; green, water catalyzed mechanism via direct reaction of OOH* with CO*.
