TY - JOUR
T1 - CO2/N2 separation using alumina supported membranes based on new functionalized ionic liquids
AU - Sánchez Fuentes, Cinthia E.
AU - Guzmán-Lucero, Diego
AU - Torres-Rodriguez, Miguel
AU - Likhanova, Natalya V.
AU - Bolaños, Juan Navarrete
AU - Olivares-Xometl, Octavio
AU - Lijanova, Irina V.
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - In the present work, supported liquid membranes based on three ionic liquids (ILs) (1-(2-aminoethyl)-3-methylimidazolium trifluoromethanesulfonate ([AEMIm]Tf), 1-(2-aminoethyl)-3-methylimidazolium tetrafluoroborate ([AEMIm]BF4) and trioctylmethylammonium anthranilate ([TOMA])), used as mobile phases, were studied in the separation of carbon dioxide from nitrogen. The IL chemical structures and thermal properties were confirmed by spectroscopic techniques and thermogravimetric analysis (TGA), respectively. The IL homogeneous distribution of the impregnation on alumina tubular supports was determined by scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX). Permeation tests were carried out using pure gases at 30 °C and 1 bar. The amino-functionalized ILs, two of them in the cation, [AEMIm]BF4 and [AEMIm]Tf, and the other one in the anion, [TOMA]An, reacted with CO2, leading to the formation of carbamates. [TOMA]An, which has the amine group at the anionic part, showed the best permselectivity, reaching a selectivity of 70.
AB - In the present work, supported liquid membranes based on three ionic liquids (ILs) (1-(2-aminoethyl)-3-methylimidazolium trifluoromethanesulfonate ([AEMIm]Tf), 1-(2-aminoethyl)-3-methylimidazolium tetrafluoroborate ([AEMIm]BF4) and trioctylmethylammonium anthranilate ([TOMA])), used as mobile phases, were studied in the separation of carbon dioxide from nitrogen. The IL chemical structures and thermal properties were confirmed by spectroscopic techniques and thermogravimetric analysis (TGA), respectively. The IL homogeneous distribution of the impregnation on alumina tubular supports was determined by scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX). Permeation tests were carried out using pure gases at 30 °C and 1 bar. The amino-functionalized ILs, two of them in the cation, [AEMIm]BF4 and [AEMIm]Tf, and the other one in the anion, [TOMA]An, reacted with CO2, leading to the formation of carbamates. [TOMA]An, which has the amine group at the anionic part, showed the best permselectivity, reaching a selectivity of 70.
KW - Alumina support
KW - CO separation
KW - Carbamate stability
KW - Permselectivity
KW - Supported ionic liquid membrane
UR - http://www.scopus.com/inward/record.url?scp=85016403850&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2017.03.031
DO - 10.1016/j.seppur.2017.03.031
M3 - Artículo
SN - 1383-5866
VL - 182
SP - 59
EP - 68
JO - Separation and Purification Technology
JF - Separation and Purification Technology
ER -