Abstract
A study is performed of 4% Mo/ZSM-5 (30) catalysts for methane aromatization prepared by solid-phase synthesis with mechanical mixing of a zeolite with MoO3 followed by calcination at 550°C. Zeolite etched with sodium hydroxide solutions and dealuminated with aluminum nitrate solutions is used as a support. Catalytic studies of the catalysts are conducted. The effect of treating the initial zeolite on the properties of catalysts in methane aromatization is determined. The effect subsequently treating a zeolite support has on the acid sites of a catalyst is confirmed by means of temperature-programmed reduction and the temperature-programmed desorption of NH3. The formation of molybdenum ions in the +5 oxidation state during catalysis and the presence of graphitized carbon deposits on a spent catalyst’s surface are confirmed by EPR and temperature-programmed oxidation.
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Original Russian Text © S.A. Mikhailov, O.N. Protasov, N.A. Mamonov, A.V. Kucherov, M.N. Mikhailov, L.M. Kustov, 2014, published in Zhurnal Fizicheskoi Khimii, 2014, Vol. 88, No. 3, pp. 401–408.
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Kucherov, A.V. Effect of the formation of secondary pores in zeolite ZSM-5 on the properties of molybdenum-zeolite catalysts for methane aromatization. Russ. J. Phys. Chem. 88, 386–392 (2014). https://doi.org/10.1134/S0036024414030170
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DOI: https://doi.org/10.1134/S0036024414030170