Rate and Selectivity Enhancements Mediated by OH Radicals in the Oxidative Coupling of Methane Catalyzed by Mn/Na 2 WO 4 /SiO 2 | Zendy

Takanabe Kazuhiro | Zendy; Iglesia Enrique | Zendy

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Rate and Selectivity Enhancements Mediated by OH Radicals in the Oxidative Coupling of Methane Catalyzed by Mn/Na 2 WO 4 /SiO 2

Author(s) -

Takanabe Kazuhiro,

Iglesia Enrique

Publication year - 2008

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.200802608

Subject(s) - oxidative coupling of methane , radical , methane , catalysis , chemistry , oxygen , reactivity (psychology) , selectivity , oxide , homogeneous , oxygen atom , atomic oxygen , photochemistry , inorganic chemistry , coupling (piping) , atom (system on chip) , oxidative phosphorylation , molecule , materials science , organic chemistry , physics , thermodynamics , medicine , alternative medicine , pathology , computer science , metallurgy , embedded system , biochemistry

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 CH 4 activation with chemisorbed oxygen (see picture; O*: dissociated oxygen atom; R: abstractor). The reactivity of OH . leads to a weaker influence of the CH bond energies on the relative rates of H abstraction from CH 4 , C 2 H 6 , and C 2 H 4 .

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