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Your search keyword '"Barbin, Nikolay M."' showing total 11 results
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11 results on '"Barbin, Nikolay M."'

1. Change of properties of fullerene C50 under thermal action in carbon-nitrogen system.

Author

Barbin, Nikolay M., Yakupova, Lidiya V., Terentev, Dmitriy I., and Kuanyshev, Valery Т.

Subjects
*GAS phase reactions, *CONDENSED matter, *NITROGEN deficiency, *THERMAL stability, *CHEMICAL reactions
Abstract

In order to study the thermal stability of fullerene С50 in a nitrogen atmosphere during the transition from the condensed phase to the gas phase and further reactions in the vapor phase, the method of thermodynamic modeling is used. The study was carried out with an excess and deficiency of nitrogen. Based on the results of the calculation, the chemical reactions in the С50−N2 system are compiled and the temperature intervals are distinguished for each reaction. In this work, a comparative study of the thermal stability intervals of C50 fullerenes in the condensed and gas phases was carried out. This study is one of series of papers on the properties of nanoparticles in a nitrogen atmosphere. [ABSTRACT FROM AUTHOR]

Published
2024
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11. Comparative Thermodynamic Analysis of the Behavior of C60 and C28 Fullerenes when Heated in an Inert Medium

Author

Barbin, Nikolay M., Dan, Vasiliy P., Terentyev, Dmitriy I., and Alexeev, Sergey G.

Abstract

The structural changes of condensed fullerenes C60 and C28 at a temperature increase from 200 K to 2000 K have been studied by computational methods using the TERRA software for carbon-argon systems. The processes of destruction of fullerenes C60 and C28 molecules are presented, and the temperature ranges of their thermal stability are determined: up to 1000 K and up to 400 K, respectively. The following thermophysical parameters of the C60-Ar and C28-Ar systems are considered: specific volume, entropy, total enthalpy, total internal energy, equilibrium specific heat, molar mass of the gas phase, gas constant, and mass fraction of the condensed phase. A comparative analysis of their changes with increasing temperature is carried out. The results obtained in the course of thermodynamic modeling are similar to the results of a full-scale experiment conducted under similar conditions. In the future, the obtained data can be used to determine the explosive and fire-hazardous properties of fullerenes as a dispersed solid.

Published
2020

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