Permeation of supercritical CO2 through perfluoroelastomers; The Journal of Supercritical Fluids; Vol. 126

Permeation of supercritical CO2 through perfluoroelastomers; The Journal of Supercritical Fluids; Vol. 126

Chi tiết về thư mục
Parent link:	The Journal of Supercritical Fluids Vol. 126.— 2017.— [13 р.]
Tác giả của công ty:	Национальный исследовательский Томский политехнический университет (ТПУ) Энергетический институт (ЭНИН) Кафедра автоматизации теплоэнергетических процессов (АТП)
Tác giả khác:	Legro J. K. Ch. Zhan Klod Chislan, Mialdun A. Aliaksandr, Strizhak P. A. Pavel Alexandrovich, Shevtsova V. Valentina
Tóm tắt:	Title screen This study aims to investigate the one-component permeation of carbon dioxide through two commercial perfluoroelastomers, Kalrez 6375 and Kalrez 7090, in long-duration tests (more than 30 days). The permeation rate in the cells filled with supercritical CO2 (SC-CO2) at the initial pressure of about pin = 41 MPa has been analyzed by measuring the pressure decrease over time at the constant temperature of about 334 K. These measurements have revealed two distinct regimes of permeation which are separated by a local maximum at p ∼ 12.5 MPa. In the lower pressure regime, the molar flux of the permeant linearly slows down with the pressure decrease. The high-pressure regime is characterized by a pressure independent molar flux of SC-CO2 through the elastomer. Considering the solution-diffusion model of permeation, we have developed a theoretical model describing the mass transport of CO2 through the elastomer at three different time scales. Its comparison with experimental observations provides insight into the fundamental aspects determining the membrane transport properties (diffusion, sorption, permeability). Application of the results for the plane sheet model to the realistic geometry of the sealing rings is discussed.
Ngôn ngữ:	Tiếng Anh
Được phát hành:	2017
Những chủ đề:	труды учёных ТПУ электронный ресурс диоксиды мембраны диффузия водопроницаемость сорбция supercritical carbon dioxide kalrez membrane diffusion permeability sorption
Truy cập trực tuyến:	https://doi.org/10.1016/j.supflu.2017.02.022
Định dạng:	Điện tử Chương của sách
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=655364

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