Properties of gas hydrates formed by nonequilibrium condensation of molecular beams / Faizullin M. Z.,Vinogradov A. V.,Koverda V. P. // HIGH TEMPERATURE. - 2014. - V. 52, l. 6. - P. 830-839.

ISSN/EISSN:

0018-151X / 1608-3156

Type:

Article

Abstract:

Low-temperature crystallization of amorphous materials has been analyzed theoretically taking into account nonstationary nucleation. The kinetics of crystallization of amorphous water layers, formed by depositing molecular beams on a substrate cooled by liquid nitrogen, has been investigated by differential thermal analysis. The conditions of gas hydrate formation in low-temperature amorphous-ice layers saturated with carbon dioxide have been studied. The glass-transition and crystallization temperatures of the gas hydrates have been determined from the change in dielectric properties upon heating. Under the deep-metastability conditions, crystallization of water-gas layers leads to the formation of crystallohydrates. Gas molecules are captured by the avalanche-like nucleation of crystallization centers and, therefore, are not displaced by the moving crystal-melt interface. Gas-hydrate samples formed in nonequilibrium water-gas layers are convenient for studying their thermophysical properties.

Author keywords:

GLASS-TRANSITION; AQUEOUS-SOLUTIONS; AMORPHOUS SOLIDS; METHANE HYDRATE; WATER; CRYSTALLIZATION; TEMPERATURE; NUCLEATION; MIXTURE; SIMULATION

DOI:

10.1134/S0018151X14050046

Web of Science ID:

ISI:000346405400008

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	NOV
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1608-3156
Keywords-Plus	GLASS-TRANSITION; AQUEOUS-SOLUTIONS; AMORPHOUS SOLIDS; METHANE HYDRATE; WATER; CRYSTALLIZATION; TEMPERATURE; NUCLEATION; MIXTURE; SIMULATION
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	faizullin@itp.uran.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}12-08-00017-a, 14-08-31007 mol\_a]; Basic Research Program of the Ural Branch, Russian Academy of Sciences {[}12-T-2-1002]
Funding-Text	This study was supported by the Russian Foundation for Basic Research, project nos. 12-08-00017-a and 14-08-31007 mol\_a, and the Basic Research Program of the Ural Branch, Russian Academy of Sciences, project no. 12-T-2-1002.
Number-of-Cited-References	36
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	6
Journal-ISO	High Temp.
Doc-Delivery-Number	AW6WE