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An Effect of the Reagent Concentration in the Flow of a Gas Mixture on the Parameters of the Combustion Wave of CaH2 in SiF4

  • Inorganic Chemistry
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Abstract

The dependence has been investigated of the maximum temperature in the reaction front, the linear velocity of the combustion wave of CaH2 in a mixture of gases SiF4 and H2 with the formation of SiH4, and the conversion of calcium hydride on the initial mass concentration of silicon tetrafluoride. The experimental data have been obtained in a vertical flow reactor with forced gas filtration in the range of SiF4 mass fractions of 0.7–0.98. The results of the experiment have been compared with the data of calculation according to the classical physical and mathematical model of the exothermic reaction wave propagation in a porous medium during gas blowing. The similarities and differences have been established between the experimental and calculated values of the maximum temperature in the reaction front, the linear velocity of the combustion wave propagation, and the conversion of the solid-phase reagent.

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Notes

  1. Termodinamicheskie svoistva individual’nykh veshchestv: Sprav. (Thermodynamic Properties of Individual Substances, Handbook), Glushko, V. P., Ed., Moscow: Nauka, 1978, vol. 1, p. 31.

  2. Termodinamicheskie svoistva individual’nykh veshchestv: Sprav. (Thermodynamic Properties of Individual Substances, Handbook), Glushko, V. P., Ed., Moscow: Nauka, 1979, vol. 2, p. 246.

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Funding

The work was carried out according to the R&D Program of the state assignment No. 0095-2019-0008.

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Authors and Affiliations

  1. Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, 603951, Nizhny Novgorod, Russia

    A. Yu. Lashkov, A. D. Bulanov & O. Yu. Troshin

  2. Lobachevsky State University of Nizhny Novgorod, 603950, Nizhny Novgorod, Russia

    A. D. Bulanov & O. Yu. Troshin

Authors
  1. A. Yu. Lashkov
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  2. A. D. Bulanov
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  3. O. Yu. Troshin
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Correspondence to A. Yu. Lashkov.

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Translated from Zhurnal Prikladnoi Khimii, No. 2, pp. 146–152, January, 2021 https://doi.org/10.31857/S004446182102002X

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Lashkov, A.Y., Bulanov, A.D. & Troshin, O.Y. An Effect of the Reagent Concentration in the Flow of a Gas Mixture on the Parameters of the Combustion Wave of CaH2 in SiF4. Russ J Appl Chem 94, 136–142 (2021). https://doi.org/10.1134/S1070427221020026

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  • DOI: https://doi.org/10.1134/S1070427221020026

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