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 Scopus, Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 30 апреля 2017 г.

Работа с статьей


[1] Gas permeation parameters of mixed matrix membranes based on the polymer of intrinsic microporosity pim-1 and the zeolitic imidazolate framework zif-8 / A. F. Bushell, M. P. Attfield, C. R. Mason et al. // Journal of Membrane Science. — 2013. — Vol. 427, no. 1. — P. 48–62. 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. [ DOI ]

Публикация в формате сохранить в файл сохранить в файл сохранить в файл сохранить в файл сохранить в файл сохранить в файл скрыть