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Title:
Ionic Liquid Confined in Mesoporous Polymer Membrane with Improved Stability for CO2/N-2 Separation
Author: Tan, Ming1; Lu, Jingting1,2; Zhang, Yang1; Jiang, Heqing1,3
Source: NANOMATERIALS
Issued Date: 2017-10-01
Volume: 7, Issue:10
Keyword: gas separation ; supported membrane ; mesoporous polymer ; ionic liquid ; high stability
DOI: 10.3390/nano7100299
DOC Type: Article
English Abstract: Supported ionic liquid membranes (SILMs) have a promising prospect of application in flue gas separation, owing to its high permeability and selectivity of CO2. However, existing SILMs have the disadvantage of poor stability due to the loss of ionic liquid from the large pores of the macroporous support. In this study, a novel SILM with high stability was developed by confining ionic liquid in a mesoporous polymer membrane. First, a mesoporous polymer membrane derived from a soluble, low-molecular-weight phenolic resin precursor was deposited on a porous Al2O3 support, and then 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]) was immobilized inside mesopores of phenolic resin, forming the SILM under vacuum. Effects of trans-membrane pressure difference on the SILM separation performance were investigated by measuring the permeances of CO2 and N-2. The SILM exhibits a high ideal CO2/N-2 selectivity of 40, and an actual selectivity of approximately 25 in a mixed gas (50% CO2 and 50% N-2) at a trans-membrane pressure difference of 2.5 bar. Compared to [emim][BF4] supported by polyethersulfone membrane with a pore size of around 0.45 m, the [emim][BF4] confined in a mesoporous polymer membrane exhibits an improved stability, and its separation performance remained stable for 40 h under a trans-membrane pressure difference of 1.5 bar in a mixed gas before the measurement was intentionally stopped.
WOS Headings: Science & Technology ; Technology
WOS Subject: Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Subject Extended: Science & Technology - Other Topics ; Materials Science
WOS Keyword Plus: CARBON-DIOXIDE ; PHASE-BEHAVIOR ; MIXED-GAS ; PERMEABILITY ; CO2 ; PERFORMANCE ; SELECTIVITY ; TRANSPORT ; SUPPORTS ; ALUMINA
Indexed Type: SCI
Funder: National Natural Science Foundation of China(21506238 ; Shandong Provincial Natural Science Foundation, China(BS2014NJ019) ; project of Science and Technology Development Program in Shandong Province(2014GSF117031) ; State Key Laboratory of Coal Conversion(J15-16-907) ; 21403267)
Language: 英语
WOS ID: WOS:000414916100017
Citation statistics:
Content Type: 期刊论文
URI: http://ir.qibebt.ac.cn/handle/337004/9694
Appears in Collections:膜分离与催化团队_期刊论文

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description.institution: 1.Chinese Acad Sci, Qingdao Key Lab Funct Membrane Mat & Membrane Tec, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Coal Chem, Taiyuan 030001, Shanxi, Peoples R China

Recommended Citation:
Tan, Ming,Lu, Jingting,Zhang, Yang,et al. Ionic Liquid Confined in Mesoporous Polymer Membrane with Improved Stability for CO2/N-2 Separation[J]. NANOMATERIALS,2017,7(10).
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