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Formation of hexagonal MoO3 upon the decomposition of silica-supported ammonium paramolybdate

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Abstract

Upon the decomposition of silica-supported ammonium paramolybdate, hexagonal MoO3 is formed at 300–350 °C. Irreversible transformation of hexagonal to rhombic MoO3 is observed with increasing calcination temperature. The hexagonal MoO3 structure is probably stabilized by the insertion of ammonium and silicon ions into the lattice of molybdenum trioxide.

Abstract

В процессе разложения парамолибдата аммония, нанесенного на силикагель, в интервале температур 300–359 °C наблюдается образование структуры гексагональной трехокиси молибдена. При повышении температуры прокаливания происходит необратимый переход гексагональной MoO3 в ромбическую форму. Гексакональная структура MoO3, вероятно, стабилизируется вхождением ионов кремния и аммония в решетку MoO3.

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References

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Authors and Affiliations

  1. Institute of Catalysis, Novosibirsk, USSR

    I. P. Olenkova, D. V. Tarasova, G. N. Kustova, G. I. Aleshina & E. L. Mikhailenko

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  1. I. P. Olenkova
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  2. D. V. Tarasova
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  3. G. N. Kustova
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  4. G. I. Aleshina
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  5. E. L. Mikhailenko
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Olenkova, I.P., Tarasova, D.V., Kustova, G.N. et al. Formation of hexagonal MoO3 upon the decomposition of silica-supported ammonium paramolybdate. React Kinet Catal Lett 9, 221–225 (1978). https://doi.org/10.1007/BF02068928

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  • DOI: https://doi.org/10.1007/BF02068928

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