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Diffuse reflectance spectroscopic studies of supported molybdenum oxide catalysts for propene metathesis

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Abstract

Diffuse reflectance spectra of 10 wt.% MoO3 supported on γ-Al2O3 and SiO2 have been measured after various steps of treatment. γ-Al2O3 was pretreated by 0.05 and 1.0 wt.% KOH. The comparison of spectral data and catalytic properties allows to predict the optimal oxidation state of molybdenum ions in surface clusters (approximately Mo5+), necessary to obtain supported MoO3 catalysts for propene metathesis with high activity and selectivity.

Abstract

Измерены спектры диффузного отражения окиси молибдена, нанесенной на γ-Al2O3 и SiO2 в количестве 10% вес. для различных стадий обработки этих систем. γ-Al2O3 была предварительно обработана 0,05% и 1,0% KOH. Сравнение полученных в настоящей работе спектральных данных и каталитических свойств этих систем позволяет сделать заключение об оптимальном окислительном состоянии ионов молибдена в поверхностных кластерах (∼ Mo5+), необходимом для получения нанесённых окисномолибденовых катализаторов диспропорционирования пропилена с высокой каталитической активностью и селективностью.

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References

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Authors and Affiliations

  1. Institute of Chemical Physics, Academy of Sciences of the USSR, Moscow, USSR

    R. K. Aliev, I. L. Tsytovskaya, A. A. Kadushin, K. N. Spiridonov & O. V. Krylov

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  1. R. K. Aliev
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  2. I. L. Tsytovskaya
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  3. A. A. Kadushin
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  4. K. N. Spiridonov
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  5. O. V. Krylov
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Aliev, R.K., Tsytovskaya, I.L., Kadushin, A.A. et al. Diffuse reflectance spectroscopic studies of supported molybdenum oxide catalysts for propene metathesis. React Kinet Catal Lett 8, 347–352 (1978). https://doi.org/10.1007/BF02068177

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  • DOI: https://doi.org/10.1007/BF02068177

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