Radically Improved: OH radicals formed by quasi-equilibrated steps on oxide surfaces introduce homogeneous pathways that lead to higher rates and C 2 yields in oxidative methane coupling relative to those attained by CH4 activation with chemisorbed oxygen (see picture; O*: dissociated oxygen atom; R: abstractor). The reactivity of OH. leads to a weaker influence of the C-H bond energies on the relative rates of H abstraction from CH4, C2H6, and C 2H4.
- Hydrogen abstraction
- Oxidative coupling of methane
- Radical reactions
- Reaction mechanisms
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