Fundamentals of enhanced oxygen releasability of Mn-Na2WO4/SiO2 through cofed water for efficient oxidative coupling of methane in a chemical looping mode

Jianshu Li,Juan Chen,Anna Zanina,Yuming Li,Changchun Yu,Mengxi Liu,Guoqing Cui,Yajun Wang,Mingxia Zhou,Evgenii V. Kondratenko,Guiyuan Jiang

Journal of Catalysis（2023）

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摘要

•The performance of Mn-Na2WO4/SiO2 catalysts in CL-OCM can be significantly improved by cofed water.•Water does not alter the scheme of product formation but influences their kinetics.•Water facilitates the releasability of lattice oxygen.•The role of MnOx and Na2WO4 is shown by in situ XRD and UV–vis spectroscopy.

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关键词

Chemical looping,Oxidative coupling of methane,Cofed water,Oxygen species,Mobility,Water effect,Mn-Na2WO4/SiO2

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