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Features of Phase Formation during “Dry” Neutralization in the System Na2CO3–H2O–HxAn

  • Inorganic Synthesis and Industrial Inorganic Chemistry
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Abstract

It was found that during the “dry” neutralization of mono- (acetic) and polybasic (orthophosphoric, citric, sulfuric) acids (HxAn) in the Na2CO3–H2O–HxAn system with a molar ratio Na2CO3/HxAn = 1.5–10.5 at the interface, sodium sesquicarbonate (Na2CO3·NaHCO3·2H2O) crystallizes as a result of decomposition of Na2CO3, dissolution of the resulting CO2 in the surface liquid layer and its interaction with CO32– anions with the formation of an equimolar amount of HCO3– anions. The hydrated salts formed during the process (phosphates, acetates, citrates, and sodium sulfates) play the role of binders during the aggregation of particles into granules of a 0.106–1.00 mm size.

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Authors and Affiliations

  1. Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, 220072, Minsk, Belarus

    A. I. Sumich

  2. Belarusian State Technological University, 220006, Minsk, Belarus

    L. S. Eshchenko

Authors
  1. A. I. Sumich
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  2. L. S. Eshchenko
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Correspondence to A. I. Sumich.

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Additional information

Translated from Zhurnal Prikladnoi Khimii, No. 7, pp. 829–834, January, 2021 https://doi.org/10.31857/S0044461821070033

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Sumich, A.I., Eshchenko, L.S. Features of Phase Formation during “Dry” Neutralization in the System Na2CO3–H2O–HxAn. Russ J Appl Chem 94, 884–889 (2021). https://doi.org/10.1134/S1070427221070041

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  • DOI: https://doi.org/10.1134/S1070427221070041

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