Mixed-gas CO2/CH4 and CO2/N2 separation with sulfonated PEEK membranes

被引:83
作者
Khan, Asim Laeeq [2 ]
Li, Xianfeng [1 ]
Vankelecom, Ivo F. J. [2 ]
机构
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Lab FEMFC Key Mat & Technol, Dalian 116023, Peoples R China
[2] Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, Fac Bioengn Sci, B-3001 Louvain, Belgium
关键词
Poly(ether ether ketone); Gas separation; Sulfonation; Plasticization; CONCENTRATED SULFURIC-ACID; PROTON-EXCHANGE MEMBRANES; SEGMENTED BLOCK-COPOLYMERS; MODEL-COMPOUND SULFONATION; FILM COMPOSITE MEMBRANES; TRANSPORT PROPERTIES; ROOM-TEMPERATURE; POLYPHENYLENE OXIDE; POLYMER MEMBRANES; PERMEATION;
D O I
10.1016/j.memsci.2011.01.056
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
This paper describes the performance of sulfonated aromatic poly(ether ether ketone) (S-PEEK) membranes, directly prepared from the sulfonated monomer, for CO2 separation from gas mixtures containing N-2 or CH4. Dense membranes with different degrees of sulfonation were prepared via solvent evaporation. Increasing degree of sulfonation simultaneously improves the permeability and selectivity of both gas pairs. The effect of counterions was investigated by converting S-PEEK membranes from the Na+-form in which they are prepared, to the H+ and multivalent cationic forms. Gas permeability and selectivity for polymers with divalent and trivalent counterions were higher than those for polymers in the monovalent and H+-forms. In order to study the stability and potential industrial application of these membranes, they were tested at different conditions of feed pressure, temperature and CO2 feed concentration. (C) 2011 Elsevier By. All rights reserved.
引用
收藏
页码:87 / 96
页数:10
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