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X-ray study of Re/Al2O3 and Re+Pt/Al2O3 catalysts using synchrotron radiation

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Abstract

Uning synchrotron radiation, LIII rhenium absorption spectra have been studied for Re/Al2O3 and Re+Pt/Al2O3 catalysts obtained by impregnation. For individual rhenium compounds a linear dependence between the shift of absorption edge and the state of rhenium oxidation has been found. The absorption spectra of reduced catalysts are significantly broadened as compared with those of individual compounds of the same valency. This points to the presence of rhenium compounds in different oxidation states.

Abstract

С использованием синхротронного излучения изучены LIII-спектры поглощения рения, входящего в состав катализаторов Re/Al2O3 и Re+Pt/Al2O3, полученных методом пропитки. Для индивидуальных соединений рения найдена линейная зависимость сдвига края поглощения от степени окисления рения. Спектры поглощения восстановленных катализаторов значительно уширены по сравнению со спектрами индивидуальных соединений той же валентности. Это указывает на присутствие в образце соединений рения с различной степенью окисления.

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Authors and Affiliations

  1. Institute of Catalysis and Institute of Nuclear Physics, 630090, Novosibirsk, USSR

    Yu. I. Yermakov, B. N. Kuznetsov, I. A. Ovsyannikova, A. N. Startsev, S. B. Erenburg, M. A. Sheromov & L. A. Mironenko

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  1. Yu. I. Yermakov
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  2. B. N. Kuznetsov
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  3. I. A. Ovsyannikova
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  4. A. N. Startsev
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  5. S. B. Erenburg
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  6. M. A. Sheromov
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  7. L. A. Mironenko
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Yermakov, Y.I., Kuznetsov, B.N., Ovsyannikova, I.A. et al. X-ray study of Re/Al2O3 and Re+Pt/Al2O3 catalysts using synchrotron radiation. React Kinet Catal Lett 7, 309–313 (1977). https://doi.org/10.1007/BF02062461

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  • DOI: https://doi.org/10.1007/BF02062461

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