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1.

Вид документа : Статья из журнала
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Koverda V. P.
Заглавие : Hydrate formation in layers of gas-saturated amorphous ice [Электронный ресурс]
Место публикации : Chemical Engineering Science. - 2015. - Vol. 130. - С. 135-143
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0009250915002043
Примечания : Bibliogr. : p. 142-143 (44 ref.). - 23.12.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): amorphous ice --gas hydrates --carbon dioxide
Аннотация: Layers of amorphous ice saturated with methane, ethane, propane and carbon dioxide were obtained by condensation of molecular beams of rarefied vapor and gas on a substrate cooled with liquid nitrogen. The amorphous state of such objects at low temperatures is stabilized by the high viscosity and the small value of the stationary nucleation rate of the crystal phase. Their heating in condition of high metastability is accompanied by spontaneous explosive crystallization, which leads to the formation of gas hydrates. Glass-transition and crystallization temperatures were determined by changes in their dielectric properties under heating. An increase in the gas content in layers of amorphous ice causes an increase in the crystallization temperature without any significant changes in the glass transition temperature. At atmospheric pressure in a liquid n-pentane medium the retention of gas hydrates was observed up to temperatures close to 273. K. Self-preservation ensured the retention of hydrates in a metastable state at temperatures exceeding considerably their equilibrium dissociation temperatures. Samples of gas hydrates obtained at a maximum gas flow rate during the deposition contained up to 15 mass % of methane, 12 mass % of ethane, 13 mass % of propane, and 23 mass % of carbon dioxide
\\\\expert2\\nbo\\Chemical Engineering Science\\2015, v.130, p.135-143.pdf
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2.

Вид документа : Статья из журнала
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Koverda V. P.
Заглавие : Hydrate formation in layers of gas-saturated amorphous ice [Электронный ресурс]
Место публикации : Chemical Engineering Science. - 2015. - Vol. 130. - С. 135-143
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0009250915002043
Примечания : Bibliogr. : p. 142-143 (44 ref.). - 23.12.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): amorphous ice --gas hydrates --carbon dioxide
Аннотация: Layers of amorphous ice saturated with methane, ethane, propane and carbon dioxide were obtained by condensation of molecular beams of rarefied vapor and gas on a substrate cooled with liquid nitrogen. The amorphous state of such objects at low temperatures is stabilized by the high viscosity and the small value of the stationary nucleation rate of the crystal phase. Their heating in condition of high metastability is accompanied by spontaneous explosive crystallization, which leads to the formation of gas hydrates. Glass-transition and crystallization temperatures were determined by changes in their dielectric properties under heating. An increase in the gas content in layers of amorphous ice causes an increase in the crystallization temperature without any significant changes in the glass transition temperature. At atmospheric pressure in a liquid n-pentane medium the retention of gas hydrates was observed up to temperatures close to 273. K. Self-preservation ensured the retention of hydrates in a metastable state at temperatures exceeding considerably their equilibrium dissociation temperatures. Samples of gas hydrates obtained at a maximum gas flow rate during the deposition contained up to 15 mass % of methane, 12 mass % of ethane, 13 mass % of propane, and 23 mass % of carbon dioxide
\\\\expert2\\nbo\\Chemical Engineering Science\\2015, v.130, p.135-143.pdf
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3.

Вид документа : Статья из журнала
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Koverda V. P.
Заглавие : Properties of gas hydrates formed by nonequilibrium condensation of molecular beams [Электронный ресурс]
Место публикации : High Temperature. - 2014. - Vol. 52, № 6. - С. 830-839
Систем. требования: http://download.springer.com/static/pdf/706/art%253A10.1134%252FS0018151X14050046.pdf?auth66=1427190695_f46e11cc1867f9174e766f05ba570465&ext=.pdf
Примечания : Bibliogr. : p. 838-839 (36 ref.). - 24.03.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): glass-transition --amorphous solids--aqueous-solutions
Аннотация: 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
\\\\expert2\\nbo\\High Temperature\\2014, v. 52, N 6, p.830-839.pdf
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4.

Вид документа : Статья из журнала
Шифр издания : 53/F 76
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Skokov V. N., Koverda V. P.
Заглавие : Formation of gas hydrate during crystallization of ethane-saturated amorphous ice [Электронный ресурс]
Место публикации : Russian Journal of Physical Chemistry A. - 2014. - Vol.88, №10. - С. 1706-1711
Систем. требования: http://download.springer.com/static/pdf/529/art%253A10.1134%252FS0036024414100124.pdf?auth66=1413195106_461536f990f951d6de37a1434a475230&ext=.pdf
Примечания : Bibliogr. : p. 1710-1711 (24 ref.). - 13.10.2014
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): amorphous ice--crystallization --vitrification
Аннотация: Layers of ethane-saturated amorphous ice were prepared by depositing molecular beams of water and gas on a substrate cooled with liquid nitrogen. The heating of the layers was accompanied by vitrification (softening) followed by spontaneous crystallization. Crystallization of condensates under the conditions of deep metastability proceeded with gas hydrate formation. The vitrification and crystallization temperatures of the condensates were determined from the changes in their dielectric properties on heating. The thermal effects of transformations were recorded by differential thermal analysis. The crystallization of the amorphous water layers was studied by electron diffraction. Formation of a metastable packing with elements of a cubic diamond-like structure was noted
\\\\expert2\\nbo\\Russian Journal of Physical Chemistry A, Focus on Chemistry\\2014, V.88, N 10, p.1706.pdf
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5.

Вид документа : Статья из журнала
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Koverda V. P.
Заглавие : Properties of gas hydrates formed by nonequilibrium condensation of molecular beams [Электронный ресурс]
Место публикации : High Temperature. - 2014. - Vol. 52, № 6. - С. 830-839
Систем. требования: http://download.springer.com/static/pdf/706/art%253A10.1134%252FS0018151X14050046.pdf?auth66=1427190695_f46e11cc1867f9174e766f05ba570465&ext=.pdf
Примечания : Bibliogr. : p. 838-839 (36 ref.). - 24.03.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): glass-transition --amorphous solids--aqueous-solutions
Аннотация: 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
\\\\expert2\\nbo\\High Temperature\\2014, v. 52, N 6, p.830-839.pdf
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6.

Вид документа : Статья из журнала
Шифр издания : 53/F 76
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Skokov V. N., Koverda V. P.
Заглавие : Formation of gas hydrate during crystallization of ethane-saturated amorphous ice [Электронный ресурс]
Место публикации : Russian Journal of Physical Chemistry A. - 2014. - Vol.88, №10. - С. 1706-1711
Систем. требования: http://download.springer.com/static/pdf/529/art%253A10.1134%252FS0036024414100124.pdf?auth66=1413195106_461536f990f951d6de37a1434a475230&ext=.pdf
Примечания : Bibliogr. : p. 1710-1711 (24 ref.). - 13.10.2014
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): amorphous ice--crystallization --vitrification
Аннотация: Layers of ethane-saturated amorphous ice were prepared by depositing molecular beams of water and gas on a substrate cooled with liquid nitrogen. The heating of the layers was accompanied by vitrification (softening) followed by spontaneous crystallization. Crystallization of condensates under the conditions of deep metastability proceeded with gas hydrate formation. The vitrification and crystallization temperatures of the condensates were determined from the changes in their dielectric properties on heating. The thermal effects of transformations were recorded by differential thermal analysis. The crystallization of the amorphous water layers was studied by electron diffraction. Formation of a metastable packing with elements of a cubic diamond-like structure was noted
\\\\expert2\\nbo\\Russian Journal of Physical Chemistry A, Focus on Chemistry\\2014, V.88, N 10, p.1706.pdf
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7.

Вид документа : Статья из журнала
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Koverda V. P.
Заглавие : Preparation of gas hydrates by nonequilibrium condensation of molecular beams [Электронный ресурс]
Место публикации : Technical Physics Letters . - 2013. - Vol.39, №9. - С. 783-786
Систем. требования: http://www.scopus.com/record/display.url?eid=2-s2.0-84884767082&origin=resultslist&sort=plf-f&src=s&st1=Faizullin&st2=M.+Z.
Примечания : Bibliogr. : p. 786 (16 ref.). - 26.06.2014
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): carbon dioxide--crystallization temperatures--dielectric properties
Аннотация: Layers of amorphous ice saturated with carbon dioxide were prepared by the deposition of molecular beams of water and gas onto a substrate cooled with liquid nitrogen. Their heating is accompanied by glass transition (softening) and subsequent spontaneous crystallization. The glass transition and crystallization temperatures were determined from the change in dielectric properties during heating. The heat effects of the transformations were detected using differential thermal analysis. The crystallization of amorphous layers under conditions of deep metastability leads to the formation of crystalline hydrates. The avalanche nucleation of crystallization sites captures the gas molecules; therefore, they are not displaced by the movement of the crystallization front
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8.

Вид документа : Статья из журнала
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Koverda V. P.
Заглавие : Formation of clathrate hydrates under crystallization of gas-saturated amorphous ice
Место публикации : International Journal of Heat and Mass Transfer. - 2013. - Vol.65. - С. 649-654
Примечания : Bibliogr. : p. 654 (42 ref.)
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): clathrate hydrate--kinetics--methane
Аннотация: Layers of methane-saturated amorphous ice were obtained by deposition of molecular beams of water and gas on a substrate cooled with liquid nitrogen. Their heating is accompanied by glass transition (softening) and subsequent spontaneous crystallization. The avalanche-type initiation of crystallization centers captures the gas molecules and does not lead to their displacement by the motion of the crystallization front. Under crystallization of amorphous water-gas condensates in conditions of deep metastability the formation of gas hydrates takes place. Glass-transition and crystallization temperatures of the condensates were determined by changes in their dielectric properties under heating. The method of differential thermal analysis has been used to investigate the kinetics of crystallization of amorphous water layers. Properties that characterize the water crystallization kinetics have been determined on the basis of the obtained data on the dependence of the crystallization temperature on the heating rate
\\\\expert2\\NBO\\International Journal of Heat and Mass Transfer\\2013, v.65, p.649-654.pdf
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9.

Вид документа : Статья из журнала
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Koverda V. P.
Заглавие : Preparation of gas hydrates by nonequilibrium condensation of molecular beams [Электронный ресурс]
Место публикации : Technical Physics Letters . - 2013. - Vol.39, №9. - С. 783-786
Систем. требования: http://www.scopus.com/record/display.url?eid=2-s2.0-84884767082&origin=resultslist&sort=plf-f&src=s&st1=Faizullin&st2=M.+Z.
Примечания : Bibliogr. : p. 786 (16 ref.). - 26.06.2014
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): carbon dioxide--crystallization temperatures--dielectric properties
Аннотация: Layers of amorphous ice saturated with carbon dioxide were prepared by the deposition of molecular beams of water and gas onto a substrate cooled with liquid nitrogen. Their heating is accompanied by glass transition (softening) and subsequent spontaneous crystallization. The glass transition and crystallization temperatures were determined from the change in dielectric properties during heating. The heat effects of the transformations were detected using differential thermal analysis. The crystallization of amorphous layers under conditions of deep metastability leads to the formation of crystalline hydrates. The avalanche nucleation of crystallization sites captures the gas molecules; therefore, they are not displaced by the movement of the crystallization front
Найти похожие

10.

Вид документа : Статья из журнала
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Koverda V. P.
Заглавие : Formation of clathrate hydrates under crystallization of gas-saturated amorphous ice
Место публикации : International Journal of Heat and Mass Transfer. - 2013. - Vol.65. - С. 649-654
Примечания : Bibliogr. : p. 654 (42 ref.)
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): clathrate hydrate--kinetics--methane
Аннотация: Layers of methane-saturated amorphous ice were obtained by deposition of molecular beams of water and gas on a substrate cooled with liquid nitrogen. Their heating is accompanied by glass transition (softening) and subsequent spontaneous crystallization. The avalanche-type initiation of crystallization centers captures the gas molecules and does not lead to their displacement by the motion of the crystallization front. Under crystallization of amorphous water-gas condensates in conditions of deep metastability the formation of gas hydrates takes place. Glass-transition and crystallization temperatures of the condensates were determined by changes in their dielectric properties under heating. The method of differential thermal analysis has been used to investigate the kinetics of crystallization of amorphous water layers. Properties that characterize the water crystallization kinetics have been determined on the basis of the obtained data on the dependence of the crystallization temperature on the heating rate
\\\\expert2\\NBO\\International Journal of Heat and Mass Transfer\\2013, v.65, p.649-654.pdf
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