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Dispersity and reducibility of the molybdenum oxide phase in SiO2, SiO2−Al2O3 and γ-Al2O3 supported molybdena catalysts

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Abstract

XRD, isothermal and temperature-programmed reduction (TPR) experiments were carried out with SiO2, SiO2−Al2O3 and γ-Al2O3 supported catalysts. Molybdena is in a more disperse state on supports containing more alumina and it is more reducible on SiO2−Al2O3 than on SiO2 or γ-Al2O3. TPR curves were shown to reflect connections between reduction kinetics and dispersity.

Abstract

Рентгено-дифракционные, изотермические и ТПР эксперименты проводили с катализаторами, нанесенными на SiO2, SiO2−Al2O3 и γ-Al2O3. Окись молибдена находится в более диспергированном состоянии на носителях, содержащих больше алюминия, и более восстанавливаема на SiO2−Al2O3 нежели на SiO2 или γ-Al2O3. Кривые ТПВ отражают связь между кинетикой реакции и дисперсией.

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Authors and Affiliations

  1. Central Research Institute for Chemistry of the Hungarian Academy of Sciences, P.O. Box 17, Budapest, Hungary

    J. Valyon

  2. Technical University “Carl Schorlemmer”, Leuna-Merseburg, Merseburg, GDR

    M. Henker & K. -P. Wendlandt

Authors
  1. J. Valyon
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  2. M. Henker
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  3. K. -P. Wendlandt
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Valyon, J., Henker, M. & Wendlandt, K.P. Dispersity and reducibility of the molybdenum oxide phase in SiO2, SiO2−Al2O3 and γ-Al2O3 supported molybdena catalysts. React Kinet Catal Lett 38, 265–272 (1989). https://doi.org/10.1007/BF02062117

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  • DOI: https://doi.org/10.1007/BF02062117

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