TY - JOUR
T1 - Mixed matrix membranes using SAPO-34/polyetherimide for carbon dioxide/methane separation
AU - Belhaj Messaoud, Souha
AU - Takagaki, Atsushi
AU - Sugawara, Takashi
AU - Kikuchi, Ryuji
AU - Oyama, S. Ted
N1 - Funding Information:
The support for this work was funded by the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan, and the Director, National Science Foundation, Division of Chemical, Bioengineering, Environmental, and Transport Systems (CBET) under Grant CBET-084316 .
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/6/25
Y1 - 2015/6/25
N2 - Abstract Mixed matrix membranes (MMMs) are hybrid materials prepared by dispersing inorganic particles in a polymeric matrix and are attracting increasing attention for the separation of CO2/CH4 mixtures. The zeolite SAPO-34 and polyetherimide were selected as the inorganic filler and the polymeric matrix for the synthesis of the supported MMMs. Two polymer solvents, dichloroethane (DCE) and N-methyl-2-pyrrolidone (NMP), were investigated for the preparation, and the DCE solvent resulted in a membrane with better CO2/CH4 selectivity. Various SAPO-34 amounts from 0 to 10 wt% were dispersed in the polymer precursor which was dissolved in DCE. The membrane with 5 wt% SAPO-34 content presented the highest performance with a CO2 permeance of 4 × 10-10 mol m-2 s-1 Pa-1 and a CO2/CH4 ideal selectivity of 60. Based on mixed gas permeances and time-lag measurements, the separation of CO2 and CH4 was found to be dominated by the difference in the gas solubilities. The SAPO-34 decreased CH4 transport by increasing its diffusion pathway. Particle agglomeration was observed at 10 wt% zeolite loading in the polymeric matrix.
AB - Abstract Mixed matrix membranes (MMMs) are hybrid materials prepared by dispersing inorganic particles in a polymeric matrix and are attracting increasing attention for the separation of CO2/CH4 mixtures. The zeolite SAPO-34 and polyetherimide were selected as the inorganic filler and the polymeric matrix for the synthesis of the supported MMMs. Two polymer solvents, dichloroethane (DCE) and N-methyl-2-pyrrolidone (NMP), were investigated for the preparation, and the DCE solvent resulted in a membrane with better CO2/CH4 selectivity. Various SAPO-34 amounts from 0 to 10 wt% were dispersed in the polymer precursor which was dissolved in DCE. The membrane with 5 wt% SAPO-34 content presented the highest performance with a CO2 permeance of 4 × 10-10 mol m-2 s-1 Pa-1 and a CO2/CH4 ideal selectivity of 60. Based on mixed gas permeances and time-lag measurements, the separation of CO2 and CH4 was found to be dominated by the difference in the gas solubilities. The SAPO-34 decreased CH4 transport by increasing its diffusion pathway. Particle agglomeration was observed at 10 wt% zeolite loading in the polymeric matrix.
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U2 - 10.1016/j.seppur.2015.04.017
DO - 10.1016/j.seppur.2015.04.017
M3 - Article
AN - SCOPUS:84929377804
SN - 1383-5866
VL - 148
SP - 38
EP - 48
JO - Separation and Purification Technology
JF - Separation and Purification Technology
M1 - 12299
ER -