Large area Cl9+ irradiated PET membranes for hydrogen separation

被引:15
作者
Awasthi, Kamlendra [1 ,2 ]
Stamm, M. [1 ]
Abetz, Volker [3 ]
Vijay, Y. K. [4 ]
机构
[1] Leibniz Inst Polymer Res Dresden, Dept Nanostruct Mat, D-01069 Dresden, Germany
[2] Indian Inst Technol, Dept Chem Engn, DST Unit Nanosci, Kanpur 208016, Uttar Pradesh, India
[3] Helmholtz Zentrum Geesthacht, Polymer Res Inst, Ctr Membranes & Struct Mat, D-21502 Geesthacht, Germany
[4] Univ Rajasthan, Dept Phys, Jaipur 302055, Rajasthan, India
关键词
Track etched membrane; Ion irradiation; Chemical etching; Gas permeability; X-RAY-SCATTERING; ION TRACKS; POLYMERIC MEMBRANES; GAS PERMEATION; TRANSPORT;
D O I
10.1016/j.ijhydene.2011.04.200
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In the present case, Polyethylene terephthalate (PET) membranes of thickness 25 mu m were irradiated by 100 MeV Cl9+ ion beam with ion fluence of 10(7) ions/cm(2). These membranes were etched in 6N NaOH at 60 degrees C at different etching times to generate pores. The permeabilities of nitrogen, oxygen, methane, carbon dioxide as well as hydrogen were measured for etched membranes at various etching times. The permeability of gases was found to increase with etching time and a rapid increase was noticed after a critical etching time when the etched tracks meet at their vertexes. The selectivity of hydrogen gas over other gases was also observed. Crown Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:9374 / 9381
页数:8
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