Regularities of solid-phase interaction of tin and molybdenum oxides: Catalytic properties

Iranian Journal of Catalysis

مقاله 1، دوره 9، شماره 1، خرداد 2019، صفحه 1-9   

نوع مقاله: Articles

نویسندگان

Kien Cuong Dao¹؛ Alexander Aleksandrovich Il’in¹؛ Ruslan Nikolaevich Rumyantsev^{* 1}؛ Ulyana Sergeevna Uzhevskaya¹؛ Alexander Papvlovich Il’in¹؛ Taisiya Andreevna Rumyantseva²

¹Department of Inorganic Technology, Ivanovo State University of Chemistry and Technology, Sheremetievskiy Ave., 7, Ivanovo, 153000, Russia.

²Department of Technology of Fine Organic Synthesis, Ivanovo State University of Chemistry and Technology, Sheremetievskiy Ave., 7, Ivanovo, 153000, Russia.

چکیده

The interaction in the system of SnO₂ and h-MoO₃ prepared by their joint mechanical activation in a roller-ring vibratory mill was investigated. A series of catalysts was prepared with SnO₂: h-MoO₃ molar ratio 1:1; 1:2.3; 2.3:1 and 5.7:1. The catalysts were characterized by various techniques including X-ray phase, X-ray diffraction (XRD) and synchronous thermal analysis, scanning electron microscopy (SEM), BET method. An important effect of the introduction of molybdenum atoms into the structure of SnO₂ was lattice defect. Heat treatment of the mechanically activated mixture at a temperature of 600–750  resulted in obtaining crystalline Sn(MoO₄)₂. The catalytic activity of the samples was investigated by the oxidative dehydrogenation of methanol. The results reported that varying the SnO₂:MoO₃ ratio allows adjusting the selectivity of the methanol conversion process over methyl formate and dimethyl ether.

کلیدواژه‌ها

Solid solution؛ SnO2؛ h-MoO3؛ Sn(MoO4)2؛ Mechanical activation, Catalytic properties

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