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Supported Ionic Liquid Membranes and Ion-Jelly® Membranes with [BMIM][DCA]: Comparison of Its Performance for CO2 Separation.

Couto R, Neves L, Simões P, Coelhoso I - Membranes (Basel) (2015)

Bottom Line: The SILM performance was also compared to that of Ion-Jelly® membranes, a new type of gelled membranes developed recently.It was found that the PVDF membrane presents permeabilities for pure gases similar or lower to those presented by the Ion-Jelly® membranes, but with increased ideal selectivities.This membrane presents also the highest ideal selectivity (73) for the separation of CO2 from N2 when compared with SILMs using the same PVDF support but with different ionic liquids.

View Article: PubMed Central - PubMed

Affiliation: REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal. rmc09551@campus.fct.unl.pt.

ABSTRACT
In this work, a supported ionic liquid membrane (SILM) was prepared by impregnating a PVDF membrane with 1-butyl-3-methylimidazolium dicyanamide ([BMIM][DCA]) ionic liquid. This membrane was tested for its permeability to pure gases (CO2, N2 and O2) and ideal selectivities were calculated. The SILM performance was also compared to that of Ion-Jelly® membranes, a new type of gelled membranes developed recently. It was found that the PVDF membrane presents permeabilities for pure gases similar or lower to those presented by the Ion-Jelly® membranes, but with increased ideal selectivities. This membrane presents also the highest ideal selectivity (73) for the separation of CO2 from N2 when compared with SILMs using the same PVDF support but with different ionic liquids.

No MeSH data available.


Related in: MedlinePlus

Comparison of the gas permeabilities of the PVDF and Ion-Jelly® [23] membranes as a function of the gas Lennard-Jones diameter.
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membranes-05-00013-f001: Comparison of the gas permeabilities of the PVDF and Ion-Jelly® [23] membranes as a function of the gas Lennard-Jones diameter.

Mentions: In Figure 1 are plotted the gas permeabilities against the Lennard-Jones diameter of the gas molecules. We can observe that the PVDF SILM presents the same trend in permeability as that previously observed for the Ion-Jelly® membrane, with O2 presenting a higher permeability than N2, due to its smaller size, while CO2 presents the highest permeability value, despite its larger size, due to its high solubility in the ionic liquid used.


Supported Ionic Liquid Membranes and Ion-Jelly® Membranes with [BMIM][DCA]: Comparison of Its Performance for CO2 Separation.

Couto R, Neves L, Simões P, Coelhoso I - Membranes (Basel) (2015)

Comparison of the gas permeabilities of the PVDF and Ion-Jelly® [23] membranes as a function of the gas Lennard-Jones diameter.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4384089&req=5

membranes-05-00013-f001: Comparison of the gas permeabilities of the PVDF and Ion-Jelly® [23] membranes as a function of the gas Lennard-Jones diameter.
Mentions: In Figure 1 are plotted the gas permeabilities against the Lennard-Jones diameter of the gas molecules. We can observe that the PVDF SILM presents the same trend in permeability as that previously observed for the Ion-Jelly® membrane, with O2 presenting a higher permeability than N2, due to its smaller size, while CO2 presents the highest permeability value, despite its larger size, due to its high solubility in the ionic liquid used.

Bottom Line: The SILM performance was also compared to that of Ion-Jelly® membranes, a new type of gelled membranes developed recently.It was found that the PVDF membrane presents permeabilities for pure gases similar or lower to those presented by the Ion-Jelly® membranes, but with increased ideal selectivities.This membrane presents also the highest ideal selectivity (73) for the separation of CO2 from N2 when compared with SILMs using the same PVDF support but with different ionic liquids.

View Article: PubMed Central - PubMed

Affiliation: REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal. rmc09551@campus.fct.unl.pt.

ABSTRACT
In this work, a supported ionic liquid membrane (SILM) was prepared by impregnating a PVDF membrane with 1-butyl-3-methylimidazolium dicyanamide ([BMIM][DCA]) ionic liquid. This membrane was tested for its permeability to pure gases (CO2, N2 and O2) and ideal selectivities were calculated. The SILM performance was also compared to that of Ion-Jelly® membranes, a new type of gelled membranes developed recently. It was found that the PVDF membrane presents permeabilities for pure gases similar or lower to those presented by the Ion-Jelly® membranes, but with increased ideal selectivities. This membrane presents also the highest ideal selectivity (73) for the separation of CO2 from N2 when compared with SILMs using the same PVDF support but with different ionic liquids.

No MeSH data available.


Related in: MedlinePlus