Influence of temperature on gas transport properties of tetraaminodiphenylsulfone (TADPS) based polybenzimidazoles
作者: Kevin A. StevensJoshua D. MoonHailun BorjiginRan LiuRonald M. JosephJudy S. RiffleBenny D. Freeman
作者单位: 1John J. McKetta Jr. Department of Chemical Engineering, The University of Texas at Austin, 2501 Speedway, Austin, TX, 78712, USA
2ExxonMobil Chemical Company, Baytown, TX, 77520, USA
3Department of Chemistry, Macromolecules Innovations Institute, Virginia Tech, Blacksburg, VA, 24061, USA
刊名: Journal of Membrane Science, 2020, Vol.593
来源数据库: Elsevier Journal
DOI: 10.1016/j.memsci.2019.117427
英文摘要: Abstract(#br)Polybenzimidazoles have been the focus of increasing study due to their good H 2 /CO 2 separation properties and high thermal stability. Gas transport properties of a series of polybenzimidazoles based on a tetraaminodiphenylsulfone (TADPS) monomer have been characterized at temperatures from 35 to 190 °C. Permeability increases with increasing temperature for all gases, and activation energies of permeation increase with increasing gas size with the exception of CO 2 . CO 2 exhibits a lower activation energy of permeation than H 2 or He, presumably due to strong sorption effects. Gas separations with TADPS-based PBIs are strongly size selective, with CO 2 /N 2 , CO 2 /CH 4 , and N 2 /CH 4 selectivities decreasing with increasing temperature. However, H 2 /CO 2 selectivities...
全文获取路径: Elsevier  (合作)
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影响因子:4.093 (2012)

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关键词翻译
关键词翻译
  • temperature 温度
  • properties 道具
  • transport 输运
  • based 基于