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Valence states and solubility limits in ternary iron-tin-antimony mixed oxide catalysts

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Abstract

The electrical conductivity study of a series of ternary Fe−Sn−Sb mixed oxides with 5 at. % Fe has shown that iron dissolves in the structure of SnO2 as ferric ions and, consequently creates acceptor centers which compensate the doping effect of Sb5+ ions simultaneously dissolved, thus increasing the maximum dissolution of pentavalent antimony and shifting thereby the apparition limit of Sb3+ ions towards higher Sb contents.

Abstract

При исследовании злектропрводимости серии тройных смесей окислов Fe−Sn−Sb c 5 ат. %-ым содержанием Fe было обнаружено, что железо растворяется в структуре SnO2 в форме ионов железа, тем самым создавая акцепторные центры, компенсирующие допинг эффект ионов Sb5+, растворяющихся одновременно с ним. Таким образом, повышается максимум растворения пятивалентной сурьмы и происходит смещение появления лимита ионов Sb3+ в сторону более высоких содержаний Sb.

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Benaïchouba, B., Herrmann, J.M. Valence states and solubility limits in ternary iron-tin-antimony mixed oxide catalysts. React Kinet Catal Lett 22, 209–213 (1983). https://doi.org/10.1007/BF02064834

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  • DOI: https://doi.org/10.1007/BF02064834

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