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ESR line-shape analysis of MoO3·Al2O3 catalysts

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Abstract

Iterative least-squares line-shape fitting was applied to study the ESR spectra of MoO3·Al2O3 catalysts. The line-shape functions are Lorentzian in outgassed samples except for the sample richest in MoO3 (30 wt.%); simulation of the spectra of reduced catalysts conforms to Gaussian at low, and to Lorentzian line-shapes at high MoO3 concentrations.

Abstract

Итерационный подгон к форме кривой с помощью наименьших квадратов был использован для изучения спектров ЭПР катализаторов MoO3·Al2O3. Функции формы кривой для дегазированных образцов являются типа Лоренца за исключением образцов, богатых в MoO3 (30 вэс.%); симуляция спектров восстановленных катализаторов с низкими концентрациями MoO3 согласуется с гауссовскойформой линий; при высоких концентрациях, форма линий соответствует кривой Лоренца.

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References

  1. N. Giordano, J.C.J. Bart, A. Vaghi, A. Castellan, G. Martinotti: J. Catal.,36, 81 (1975).

    Article  CAS  Google Scholar 

  2. N. Giordano, A. Castellan, J.C.J. Bart, A. Vaghi, F. Campadelli: J. Catal.,37, 204 (1975).

    Article  CAS  Google Scholar 

  3. A. Abragam and B. Bleaney: Electron Paramagnetic Resonance of Transition Metal Ions, Chapter 9. Clarendon Press, Oxford 1970.

    Google Scholar 

  4. P.W. Anderson, P.R. Weiss: Rev. Modern Phys.,25, 269 (1953).

    Article  CAS  Google Scholar 

  5. C. Kittel, E. Abrahams: Phys. Rev.,90, 238 (1953).

    Article  CAS  Google Scholar 

  6. K.S. Seshadri, L. Petrakis: J. Phys. Chem.,74, 4102 (1970).

    Article  CAS  Google Scholar 

  7. M. Dufaux, M. Che, C. Naccache: J. Chim. Phys. Physicochim. Biol.,67, 527 (1970).

    Article  CAS  Google Scholar 

  8. G.K. Boreskov, V.A. Dzis'ko, V.M. Emel'yanova, Yu. N. Pecherskaya, V.B. Kazanskii: Dokl. Akad. Nauk SSSR,150, 829 (1963).

    CAS  Google Scholar 

  9. A.M. Stoneham: Fundamental Aspects of Dislocation Theory. Eds. J.A. Simons, R. de Wit and R. Bullough. Natl. Bur. Stands. Spec. Publ. 317, II, 1970.

  10. K.S. Seshadri, L. Petrakis: J. Catal.,30, 195 (1973).

    Article  CAS  Google Scholar 

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Author notes

  1. J. C. J. Bart

    Present address: Montedison Research Laboratories “G. Donegani”, Novara, Italy

Authors and Affiliations

  1. Montedison Research Center, Bollate, 20021, Milano, Italy

    F. Campadelli & J. C. J. Bart

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  1. F. Campadelli
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  2. J. C. J. Bart
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Campadelli, F., Bart, J.C.J. ESR line-shape analysis of MoO3·Al2O3 catalysts. React Kinet Catal Lett 3, 435–442 (1975). https://doi.org/10.1007/BF02097989

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