Volumetric Properties of Binary and Ternary Solutions in the Water–Urea–Ammonium Sulfamate System

Kosova, D. A.; Voskov, A. L.; Uspenskaya, I. A.

doi:10.1007/s10953-016-0500-z

Cited by 2 publications

(1 citation statement)

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“…The study was based mainly on thermodynamic modeling and, according to the results of the physicochemical analysis, only the differential scanning calorimetry (DSC) data on the solidus–liquidus point were reported. In [ 23 ], the volumetric properties of this system were explored.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Study of the Ammonium Sulfamate–Urea Binary System

et al. 2023

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The physicochemical properties of binary systems are of great importance for the application of the latter. We report on the investigation of an ammonium sulfamate–urea binary system with different component ratios using a combination of experimental (FTIR, XRD, TGA/DSC, and melting point) and theoretical (DFT, QTAIM, ELF, RDG, ADMP, etc.) techniques. It is shown that, at a temperature of 100 °C, the system under study remains thermally and chemically stable for up to 30 min. It was established using X-ray diffraction analysis that the heating time barely affects the X-ray characteristics of the system. Data on the aggregate states in specified temperature ranges were obtained with thermal analysis and determination of the melting point. The structures of the ammonium sulfamate–urea system with different component ratios were optimized within the density functional theory. The atom-centered density matrix propagation calculation of the ammonium sulfamate–urea system with different component ratios was performed at temperatures of 100, 300, and 500 K. Regardless of the component ratio, a regular increase in the potential energy variation (curve amplitude) with an increase in temperature from 100 to 500 K was found.

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Section: Introductionmentioning

confidence: 99%