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Structural Changes of Mo/ZSM-5 Catalysts During the Methane Dehydroaromatization

Z.R. Ismagilov, E.V. Matus, I.Z. Ismagilov, M.A. Kerzhentsev, V.I. Zailovskii, K.D. Dosumov, A.G. Mustafin
2009 Eurasian Chemico-Technological Journal  

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<p>The structure changes of Mo/ZSM-5 catalysts with different Mo content (2 and 10 wt. % Mo) and Si/Al atomic ratio (17, 30 and 45) during the methane dehydroaromatization have been investigated by X-ray powder diffractometry, N<sub>2</sub> adsorption and transmission electron microscopy. The treatment of Mo/ZSM-5 catalysts in reducing atmosphere (CH<sub>4</sub> or H<sub>2</sub>) at about 700 °C promotes development of mesoporous system. The pores are open to the exterior of the zeolite grain
more » ... d have an entrance diameter of ~ 4-10 nm. It is proposed that mesopore formation in Mo/ZSM-5 catalyst is connected with the dealumination of zeolite. The mesopore formation in the parent H-ZSM-5 zeolite by NaOH treatment does not improve the activity of /ZSM-5 catalyst.</p>
doi:10.18321/ectj20 fatcat:ff4u6aje5zarzo5regv3vuajhi
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Z.R. Ismagilov, E.V. Matus, I.Z. Ismagilov, M.A. Kerzhentsev, V.I. Zailovskii, K.D. Dosumov, A.G. Mustafin. "Structural Changes of Mo/ZSM-5 Catalysts During the Methane Dehydroaromatization." Eurasian Chemico-Technological Journal 12.1 (2009)