State of Silicotungstic Acid in Aqueous Solutions in the Presence of Inorganic Salts as Probed by NMR Spectroscopy

A. V. Sulimov; A. L. Balashov; A. V. Ovcharova; T. A. Ryabova

doi:10.1134/S0036023618080223

State of Silicotungstic Acid in Aqueous Solutions in the Presence of Inorganic Salts as Probed by NMR Spectroscopy

Authors: Sulimov A.V.¹, Balashov A.L.¹, Ovcharova A.V.¹, Ryabova T.A.¹
Affiliations:
1. Nizhny Novgorod State Technical University
Issue: Vol 63, No 8 (2018)
Pages: 1097-1099
Section: Physical Chemistry of Solutions
URL: https://bakhtiniada.ru/0036-0236/article/view/168930
DOI: https://doi.org/10.1134/S0036023618080223
ID: 168930

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Abstract

The state of silicotungstic acid (STA) in the presence of inorganic salts (Fe₂(SO₄)₃, SnCl₂, and SnSO₄) in aqueous solutions was studied by ¹⁸³W NMR spectroscopy. Silicotungstic acid was found to retain its structure, and no new heteropoly compounds were formed. This finding proves the enhanced stability of STA toward complex formation at high acidities.