Abstract
X-ray diffraction and Mössbauer spectroscopy studies indicate that the thermal pretreatment of Pt−Sn catalysts supported on ZnAl2O4 and MgAl2O4 spinels, in the reduction medium leads to the formation of coarse-disperse particles of PtSn, Pt2Sn3 and PtSn2 alloys, which deactivate the catalysts.
Abstract
С помощьу методов рентгенографии и ЯГр спектроскопии установлено, что предварительная термообработка в восстановительной среде Pt−Sn катализаторов, нанесэнных на ZnAl2O2 и VgAl2O4 шпинели, приводит к образованию в них грубодисперсных частиц сплавов PtSn, Pt2Sn3 и PtSn2. В резулятате нроисходит дезактивация катализаторов.
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Pakhomov, N.A., Buyanov, R.A., Moroz, E.M. et al. Studies of the state and catalytic properties of platinum and tin in prereduced Pt−Sn/ZnAl2O4 and Pt−Sn/MgAl2O4 catalysts. React Kinet Catal Lett 14, 329–334 (1980). https://doi.org/10.1007/BF02073500
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DOI: https://doi.org/10.1007/BF02073500