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Gas permeation parameters of mixed matrix membranes based on the polymer of intrinsic microporosity PIM-1 and the zeolitic imidazolate framework ZIF-8статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 30 апреля 2017 г.
- Авторы: Bushell A.F., Attfield M.P., Mason C.R., Budd P.M., Yampolskii Yu, Starannikova L., Rebrov A., Bazzarelli F., Bernardo P., Jansen J.C., Lanč M., Friess K.
- Журнал: Journal of Membrane Science
- Том: 427
- Номер: 1
- Год издания: 2013
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 48
- Последняя страница: 62
- DOI: 10.1016/j.memsci.2012.09.035
- Аннотация: Mixed matrix membranes(MMMs)based on the polymer of intrinsic microporosity PIM-1 and the zeolitic imidazolate framework ZIF-8 were prepared and their permeation and sorption properties investigated.Self-supported films with ZIF-8 contents up to 43vol% were studied using GC gas permeation apparatus and a McBain sorption microbalance.Permeability coefficients were determined for the following set of gases:He,H2, O2, N2, CO2, CH4. For‘‘as-cast’’films,an increase in ZIF-8 loading results inincreases in the permeability and diffusion coefficients as well as in the separation factors a(H2/N2), a(H2/CH4), a(He/N2), a(O2/N2) and a(CO2/CH4). For all ZIF-8 contents studied, permeability is enhanced by treatment with ethanol.Data points on several Robeson diagrams are located above the 2008 upper bound.Free volume in MMMs containing ZIF-8 was studied using positron annihilation lifetime spectroscopy(PALS)and radiothermoluminescence(RTL)methods.It was shown that the introduction of ZIF-8 nanoparticles into the PIM-1 matrix results in an increase in free volume which may be assumed to arise from a combination of the contributions cavities and of more loosely packed polymer chains at the bound are between ZIF-8 particles and the PIM-1 matrix.The results obtained for the PIM-1/ZIF-8 MMMs are compared with literature data for other MMMs.
- Добавил в систему: Ямпольский Юрий Павлович