000			02066nam a2200301Ia 4500
003			MX-MdCICY
005			20250626080924.0
040			_cCICY
090			_aB-3529
245	1	0	_aDevelopment of high performance carbon molecular sieve membranes via tuning the side groups on PI precursors
490	0		_aJournal of Membrane Science, 688, p.122124, 2023
500			_aArtículo
520	3		_aIn the current study, three 6FDA1/BPDA1-based polyimides (PIs) containing different diamine moieties (DMB, TCDB, TFDB) were selected to prepare CMS membranes (CMSMs), providing a systematic study of PIs with different side group functionalization. The resultant CMSMs were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectra, and CO2 absorption measurements. Pure gas (N2, O2, CH4, CO2) and mixed gas (CO2/CH4) permeability tests were also conducted. The resultant CMSMs exhibited attractive gas separation performance. Compared to DMB-based PI, TFDB-based with trifluoromethyl (-CF3) side groups exhibited ultra-high permeability (PCO2 = 14938 Barrer, PO2 = 3146 Barrer) and moderate selectivity (αCO2/CH4 = 20.3, αO2/N2 = 4.5), while CMSMs prepared from PI with chlorine functionalization showed higher gas permeability (PCO2 = 6031 Barrer, PO2 = 1311 Barrer) and selectivity (αCO2/CH4 = 46.2, αO2/N2 = 6.5). The results indicated that side group functionalization on PIs exerts a considerable influence on the gas permeation properties of CMSMs.
650	1	4	_aCARBON MOLECULAR SIEVE MEMBRANE
650	1	4	_aGAS SEPARATION
650	1	4	_aPOLYIMIDE
650	1	4	_aSIDE GROUP
700	1	2	_aXin, J.
700	1	2	_aZhou, X.
700	1	2	_aHuo, G.
700	1	2	_aZhang, Z.
700	1	2	_aZhang, Y.
700	1	2	_aKang, S.
700	1	2	_aLi, N.
856	4	0	_uhttps://drive.google.com/file/d/17hlpB9ec_9WaOPR9g5Oc7n0j9zRcDdBQ/view?usp=drive_link _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
942			_2Loc _cREF1
008			250602s9999 xx |||||s2 |||| ||und|d
999			_c55501 _d55501