Polymorphic Mn/W/Na(K,Rb,Cs)/SiO2 catalysts for oxidative coupling of methane |
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| Authors: | A. A. Tyunyaev G. D. Nipan T. N. Kol’tsova A. S. Loktev V. A. Ketsko A. G. Dedov I. I. Moiseev |
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| Affiliation: | (1) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia;(2) Gubkin State Academy of Oil and Gas, Leninskii pr. 65, Moscow, 119991, Russia |
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| Abstract: | The phase composition of Mn/W/Na(K,Rb,Cs)/SiO2 composites-catalysts was determined by X-ray diffraction. Polymorphic transformations involving tridymite (a SiO2-based nonstoichiometric crystalline phase) were shown to be a reason for the high catalytic activity of Mn/W/Na(K,Rb,Cs)/SiO2 in heterogeneous oxidative coupling of methane. |
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