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Thermal decomposition of chromium(VI)-oxide supported on silica

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Abstract

During temperature programmed heating of Cr6+-oxide supported on dispersed silica up to three peaks of oxygen release with maxima at 670, 750 and 920 K are observed in dependence on chromium content and surface area of the silica. The peaks are related to three different kinds of unstable Cr6+-oxide existing besides stable Cr6+-surface compounds.

Abstract

В ходе температурно-программированного нагрева окиси Cr6+, нанесенной на диспергированный силикат, наблюдали три лика выделения кислорода при 670, 750 и 920 К взависимости от содержания хрома и площади поверхности окиси кремния. Пики относят ктрем нестбильной окиси Cr6+, существующим наряду со стабильными поверхностными соединениями Cr6+.

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Authors and Affiliations

  1. Zentralinstitut für physikalische Chemie, Akademie der Wissenschaften der DDR, 1199, Berlin-Adlershof, DDR

    W. Hill & G. Öhlmann

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  1. W. Hill
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  2. G. Öhlmann
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Hill, W., Öhlmann, G. Thermal decomposition of chromium(VI)-oxide supported on silica. React Kinet Catal Lett 38, 289–294 (1989). https://doi.org/10.1007/BF02062120

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  • DOI: https://doi.org/10.1007/BF02062120

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