Matches in SemOpenAlex for { <https://semopenalex.org/work/W3103520179> ?p ?o ?g. }
- W3103520179 endingPage "110761" @default.
- W3103520179 startingPage "110761" @default.
- W3103520179 abstract "Effective and economical carbon dioxide-methane separation (CO2/CH4) is highly desirable in several industries such as sweetening natural gases and renewable natural gas (RNG) from biogas and landfills. Among the different separation technologies, membrane separation has been shown to have lower cost of production and lower CH4 losses. In this study, Zeolitic Imidazole Frameworks (ZIF-8) crystals with sizes varying from 45 nm to 450 nm were synthesized and incorporated in the polymer of intrinsic microporosity, PIM-1, to form mixed matrix membranes (MMMs). The structure, morphology, and physicochemical properties of the MMMs were characterized by 1H NMR, FTIR, XRD, TGA, and SEM. ZIF-8 crystal size was controlled using the concentration of sodium formate. The influence of the ZIF-8 crystal size on MMMs was studied by sorption, gas permeability, and aging of the membranes. The MMMs with ZIF-8 crystals of 120 nm particle diameter yielded the greatest improvement in gas transport properties; the CO2/CH4 selectivity-CO2 permeability was 11.4 and 9700 Barrer compared to PIM-1 with 6.4 and 9300 Barrer respectively. The former is near the Robeson 2008 upper bound, while PIM-1 is on the 1991 upper bound. After 40 days of aging, selectivity increased and permeability decreased; the changes were parallel to the Robeson upper bounds indicating increased polymer packing and diffusivity selectivity." @default.
- W3103520179 created "2020-11-23" @default.
- W3103520179 creator A5003209165 @default.
- W3103520179 creator A5034826455 @default.
- W3103520179 creator A5060143310 @default.
- W3103520179 creator A5067137863 @default.
- W3103520179 creator A5074200293 @default.
- W3103520179 creator A5075034087 @default.
- W3103520179 creator A5080465345 @default.
- W3103520179 creator A5070202811 @default.
- W3103520179 date "2021-01-01" @default.
- W3103520179 modified "2023-10-03" @default.
- W3103520179 title "Effect of incorporating different ZIF-8 crystal sizes in the polymer of intrinsic microporosity, PIM-1, for CO2/CH4 separation" @default.
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