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Kinetics of ethylene polymerization on the catalyst Cr(π-C3H5)3/SiO2 and determination of the number of propagation centers

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Abstract

The kinetics of ethylene polymerization on a catalyst prepared by reacting tris (π-allyl) chromium with silica have been studied. The rate of polymerization is first order with respect to the monomer concentration; the activation energy is5+1 kcal/mol. The number of propagation centers and the propagation rate constant (1.8×103 1/mol s at 50°C) have been determined using radioactive quenching agents (CH3OT,14CO).

Abstract

Изучена кинетика полимеризации этилена на катализаторе, полученном при взаимодействии трис-π-аллилхрома с силикагелем. Установлено, что скоростъ полимеризации имеет первый порядок по моноеру, энергия активации составляет5+1 ккал/молъ, С исполъзованием радиоактивных инчибиторов (CH3OH3, C14O) определено число центров роста и константа скорости роста (1,8.103 л/молъ сек, 50°).

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Authors and Affiliations

  1. Institute of Catalysis, Novosibirsk, USSR

    V. A. Zakharov, E. A. Demin & Yu. I. Yermakov

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  1. V. A. Zakharov
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  2. E. A. Demin
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  3. Yu. I. Yermakov
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Zakharov, V.A., Demin, E.A. & Yermakov, Y.I. Kinetics of ethylene polymerization on the catalyst Cr(π-C3H5)3/SiO2 and determination of the number of propagation centers. React Kinet Catal Lett 1, 261–265 (1974). https://doi.org/10.1007/BF02070891

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  • DOI: https://doi.org/10.1007/BF02070891

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