Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry. Joint Inst. for Advanced Materials
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
Univ. of California, Riverside, CA (United States). Dept. of Chemistry
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry. Joint Inst. for Advanced Materials; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
In this paper, five new room temperature ionic liquids were tested as supported ionic liquid membranes (SILMs) for CO2/N2 separation capability. This series of ionic liquids (ILs) contains bicyclic amidine cations of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) or 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) with small alkyl chain substituents. These ILs have been synthesized to examine the effects of cation structure on free volume. Relevant physical and chemical properties have been examined, including CO2 solubility and viscosity. The relationship between fractional free volume and permeability of gases is explored, with an interesting note on solubility. Each cation was paired with two different anions: bis(trifluoromethanesulfonyl)imide and tetracyanoborate, for further investigation of the cation-anion interaction on SILM permeability and selectivity. Finally, three of these new ILs have exceeded Robeson's upper bound for CO2/N2 gas separations.
Schott, Jennifer A., et al. "Supported bicyclic amidine ionic liquids as a potential CO<sub>2</sub>/N<sub>2</sub> separation medium." Journal of Membrane Science, vol. 565, Aug. 2018. https://doi.org/10.1016/j.memsci.2018.08.012
Schott, Jennifer A., Do-Thanh, Chi-Linh, Mahurin, Shannon M., et al., "Supported bicyclic amidine ionic liquids as a potential CO<sub>2</sub>/N<sub>2</sub> separation medium," Journal of Membrane Science 565 (2018), https://doi.org/10.1016/j.memsci.2018.08.012
@article{osti_1468162,
author = {Schott, Jennifer A. and Do-Thanh, Chi-Linh and Mahurin, Shannon M. and Tian, Ziqi and Onishi, Nicole C. and Jiang, De-en and Dai, Sheng},
title = {Supported bicyclic amidine ionic liquids as a potential CO<sub>2</sub>/N<sub>2</sub> separation medium},
annote = {In this paper, five new room temperature ionic liquids were tested as supported ionic liquid membranes (SILMs) for CO2/N2 separation capability. This series of ionic liquids (ILs) contains bicyclic amidine cations of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) or 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) with small alkyl chain substituents. These ILs have been synthesized to examine the effects of cation structure on free volume. Relevant physical and chemical properties have been examined, including CO2 solubility and viscosity. The relationship between fractional free volume and permeability of gases is explored, with an interesting note on solubility. Each cation was paired with two different anions: bis(trifluoromethanesulfonyl)imide and tetracyanoborate, for further investigation of the cation-anion interaction on SILM permeability and selectivity. Finally, three of these new ILs have exceeded Robeson's upper bound for CO2/N2 gas separations.},
doi = {10.1016/j.memsci.2018.08.012},
url = {https://www.osti.gov/biblio/1468162},
journal = {Journal of Membrane Science},
issn = {ISSN 0376-7388},
volume = {565},
place = {United States},
publisher = {Elsevier},
year = {2018},
month = {08}}