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Thermoanalytical and NMR investigation of NaBH4·2H2O thermolysis process

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A Correction to this article was published on 18 June 2019

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Abstract

The article describes the thermolysis process of sodium borohydride dihydrate in thermoanalytical experiments. The reaction was carried out without solid catalyst and with catalyst as cobalt boride Co2B. It has been found out that in both cases the process starts after the peritectic reaction of the starting compound and forms a liquid phase. The enthalpy of peritectic reaction is ΔHreact = 19 ± 2 kJ mol−1. When thermolysis proceeds in acetonitrile solution without a catalyst intermediate hydroxyborohydride NaBH3OH and/or Na(BH3)2OH is formed according to the NMR experiment data. The formation of similar complexes in the solid phase is confirmed by experiments on the oxidation of the thermolysis products. Thermolysis process with solid catalyst proceeds with an intense exothermic effect at lower temperatures. The kinetics of the non-catalytic process is described by the model of two consecutive reactions, and reaction with the solid catalyst model is approximated by two parallel reactions.

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  • 18 June 2019

    The Editor-in-Chief would like to alert readers that due to an administrative error, this article [1] has been republished in the same journal [2]. The correct citations for these articles should be from the original publication [1].

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Acknowledgements

This work was supported by the RFBR under Grant No. 15-03-0750.

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Authors and Affiliations

  1. Chemical faculty, Moscow State University, Moscow, Russia

    I. V. Arkhangelskii

  2. Institute General and Inorganic Chemistry RAS, Moscow, Russia

    V. P. Tarasov & G. Kirakosyan

  3. Institute of Problems of Chemical Physics RAS, Chernogolovka, Russia

    O. V. Kravchenko, M. V. Tsvetkov, M. V. Solovev, Yu. A. Dobrovolskii & A. V. Shihovzev

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  1. I. V. Arkhangelskii
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  2. V. P. Tarasov
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  3. O. V. Kravchenko
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  4. G. Kirakosyan
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  5. M. V. Tsvetkov
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  6. M. V. Solovev
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  7. Yu. A. Dobrovolskii
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  8. A. V. Shihovzev
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Correspondence to I. V. Arkhangelskii.

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Arkhangelskii, I.V., Tarasov, V.P., Kravchenko, O.V. et al. Thermoanalytical and NMR investigation of NaBH4·2H2O thermolysis process. J Therm Anal Calorim 131, 2833–2842 (2018). https://doi.org/10.1007/s10973-017-6821-3

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  • DOI: https://doi.org/10.1007/s10973-017-6821-3

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