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Temperature and pressure dependence of gas permeation in amine-modified PIM-1       
Yazarlar
Doç. Dr. Bekir SATILMIŞ
Ahi Evran Üniversitesi, Türkiye
Marek Lanc
Alessio Fuoco
Carmen Rizzuto
Elena Tocci
Paola Bernardo
Gabriele Clarizia
Elisa Esposito
Marcello Monteleone
Marcela Dendisova
Karel Friess
Peter M. Budd
Johannes C. Jansen
Özet
Polymers of intrinsic microporosity (PIMs) are among the most promising candidates for the development of novel polymeric gas separation membranes for processes such as carbon capture and storage, natural gas treatment and biogas upgrading. As one of the approaches to optimize their performance, PIMs are functionalized by CO2-philic groups to improve the CO2 separation by the enhancement of specific noncovalent interactions. In this work, we show the preparation of amine-PIM from the archetypal PIM-1, using borane dimethyl sulphide complexes in order to control the degree of conversion. The PIM-1 to amine-PIM-1 conversion was characterized by ATR-IR and NMR analysis. The influence of the amine moiety on the gas transport behaviour was investigated by two complementary techniques: gas permeation measurements by the time lag method and analysis of the sorption kinetics and the equilibrium sorption isotherms by the gravimetric method. Both techniques show that permeability decreases with increasing degree of conversion. The trends in the indirectly calculated solubility confirm those of direct analysis, although quantitative comparison of the two shows fundamental differences. A pressure and temperature study on a fully converted sample indicates that the solution-diffusion model should be expressed in concentration dependent transport parameters to be correct. The experimental work was supported by quantum mechanics studies and by molecular dynamics simulations to confirm the selective non-covalent interaction of CO2 with the amino groups.
Anahtar Kelimeler
Carbon dioxide | Gas separation | Gas sorption | Molecular modelling | Polymer of intrinsic microporosity
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF MEMBRANE SCIENCE
Dergi ISSN 0376-7388
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 06-2018
Cilt No 555
Sayı 1
Sayfalar 483 / 496
Doi Numarası 10.1016/j.memsci.2018.03.039
Makale Linki https://www.sciencedirect.com/science/article/pii/S0376738818302138?via3Dihub