Gas separating hollow fibres from Poly(4-methyl-1-pentene): A new developmentстатьяИсследовательская статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 4 марта 2022 г.
Аннотация:This paper presents the results of a study of the gas transfer and selective properties of PMP hollow fibres (HFs) produced by melt spinning technology. The HFs are characterized by WAXD, SEM and DSC methods. Transport and separation properties have been determined in relation to N2, CO2, methane, butane and different mixtures in the temperature range from -10 to 80 degrees C. It has been shown that the permeance of methane in mixture with N2 and CO2 is similar to the pure methane transport, whereas the presence of butane changes PMP properties and influence transport of methane. An increase in the activity of butane in a mixture with methane led to a significant increase in the permeation flux of both butane and methane through the walls of the HFs. It was shown that PMP changes properties from methane-selective at low butane activities to butane -selective at higher butane activities. The changing of butane and methane permeance in a mixture was found well described by an exponential dependence on the activity of butane. The values of permeance parameters were determined by different methods and found to be in good agreement between each other. Discovered effect for methane/butane mixture transfer in PMP HFs allows to perform the simulation of hydrocarbons separation taking into account changing of membrane properties and discovering of promising areas and conditions of practical application for the new PMP HFs.