2018
DOI: 10.1590/0001-3765201820170221 View full text |Buy / Rent full text
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Abstract: An asymmetric membrane of polysulfone (PSf) was synthesized by phase inversion method. Permeation experiments were carried out between 2 to 5 bar pressure, and at temperatures 20 to 45°C. The denseselective layer of PSf membrane presents regular thickness (about 5 µm), and was not possible to observe the formation of macrovoids in porous layer. The CO 2 permeability through membrane was 18.8 Barrer at 35°C and 2 bar pressure, and this relationship between the pressure and the CO 2 permeability was described ad… Show more

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“…This is a common behavior of glassy polymers [ 31 , 32 ]. Biondo et al [ 33 ] reported a decrease in CO 2 permeability when the pressure increased for PSF and it was explained that the behavior was typical for a dual-mode model. Figure 10 shows the ideal CO 2 /CH 4 selectivity of the membranes incorporated with different NH 2 KIT-6 loadings.…”
Section: Resultsmentioning
“…The ideal CO2/N2 selectivity increased due to an increase in the CMBs' affinity toward CO2 via the OH and the amine group's presence. The observation indicates that the mesoporosity of DPC and DPC-NH2 were not blocked by the polymer chains penetration and the high molecular dimensions difference between the CO2 and N2 molecules [44]. The 2 wt% DPC and DPC-NH2 incorporated in the CMBs resulted in about 32% and 33% increments of the ideal CO2/N2 selectivity, respectively.…”
Section: Gas Performance Measurementmentioning
“…Separation and recovery of CO 2 have been recognized as the significant environmental subject to reduce global warming caused by CO 2 emission from industries. Various CO 2 capture and recovery methods based on adsorption, absorption, membrane have been developed. Amine‐based chemisorption process is one of the major practical methods of the CO 2 recovery due to its process simplicity and processing scale merit.…”
Section: Introductionmentioning