Polymer–ionic liquid composite membranes for propane/propylene separation by facilitated transport

Fallanza, Marcos; Ortiz, Alfredo; Gorri, Daniel; Ortíz, Inmaculada

doi:10.1016/j.memsci.2013.05.015

Cited by 74 publications

(62 citation statements)

References 32 publications

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“…Figure 1 shows and schematic diagram of the transport mechanisms of propane and propylene across polymer/ionic liquid composite membrane. The PVDF-HFP/BMImBF 4 -Ag + facilitated transport membranes reported in a previous work provided very promising results when tested with 50/50 %v/v C 3 H 8 /C 3 H 6 mixtures obtaining C 3 H 6 permeabilities up to 6,630 barrer and C 3 H 8 /C 3 H 6 selectivities over 700 combined with good long term stability [6].…”

Section: Introductionmentioning

confidence: 84%

“…These results combined with facilitated transport experimental data obtained from our previous works [6,11] will allow the development of a mathematical model able to describe the behavior of the facilitated transport mechanisms of propylene through the composite membrane and estimate the unknown facilitated transport parameters.…”

Section: Introductionmentioning

confidence: 87%

“…Recently our research group proposed the use of novel polymer-ionic liquid-Ag + composite as facilitated transport membranes to carry out the separation of propane/propylene mixtures [6]. The separation performance is mostly associated to the ability of the olefins to react selective and reversibly with silver cations Ag + , by π-complexation mechanism.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Facilitated Transport of Propylene Through Composite Polymer-Ionic Liquid Membranes. Mass Transfer Analysis

Zarca

Ortiz

Gorri

et al. 2016

Chemical Product and Process Modeling

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Separation of light gaseous olefins from paraffin's of the refinery process off-gasses has been traditionally performed by cryogenic distillation, which is a highly capital and energy intensive operation. This handicap creates an incentive for the investigation of alternative olefin/paraffin separation technologies. In this regard, membrane technology supposes a potential solution for process intensification. Previous works of our research group reported the use of facilitated transport composite membranes integrating the use of PVDF-HFP polymer, BMImBF 4 ionic liquid and AgBF 4 silver salt. In this type of membranes, the silver cations react selectively and reversibly with the olefin, allowing the separation via mobile and fixed carrier mechanisms. Ionic liquids were selected as membrane additives because in addition to their negligible vapor pressure that avoids solvent losses by evaporation, they provide stability to the metallic cation dissolved inside, and modify the structure improving the facilitated transport. This technology offers a commercial attractive separation alternative thanks to their modular form of operation, high values of selectivity and permeability and low operational costs. In the present work, propane/propylene permeation experiments involving the use ionic liquids and different membrane compositions were performed. Moreover, basing on the transport and equilibrium parameters previously obtained, a mathematical model description of the system will be proposed fitting the remaining parameters and allowing the design and optimization of the propane/propylene separation process at industrial levels.

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Section: Introductionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Facilitated Transport of Propylene Through Composite Polymer-Ionic Liquid Membranes. Mass Transfer Analysis

Zarca

Ortiz

Gorri

et al. 2016

Chemical Product and Process Modeling

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“…One of the most widely used polymers in polymer/ionic liquids blends is polyvinylidene fluoride (PVDF) and its copolymers [88][89][90]. Lee et al [91] synthesised novel composite electrolyte membranes consisting of 1-ethyl-3-methylimidazolium fluorohydrogenates ([EMIm](FH) n F) ionic liquids and the fluorinated polymers poly(decaflouorobiphenyl-(hexafluoropropylidene)diphenol) (s-DFBP-HFDP) and P(VDF-co-HFP).…”

Section: Polymer-ionic Liquid Membranesmentioning

confidence: 99%

Progress in the use of ionic liquids as electrolyte membranes in fuel cells

Díaz

Ortiz

Ortíz

2014

Journal of Membrane Science

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256

131

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This work provides a critical review of the progress in the use of Room Temperature Ionic Liquids (RTILs) as Proton Exchange Membrane (PEM) electrolytes in Fuel Cells (FCs). It is well-known that for an efficient early commercialisation of this technology it is necessary to develop a proton exchange membrane with high proton conductivity without water dependency capable of working at temperatures above 100 ºC. The use of ionic liquids as electrolytes in electrochemical devices is an emerging field due to their high conductivity, as well as their thermal, chemical and electrochemical stability under anhydrous conditions. This paper attempts to give a general overview of the state-of-the-art, identifies the key factors for future research and summarises the recent progress in the use of ionic liquids as an innovative type of PEMs.

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“…When AgBF 4 was incorporated into polymers that contain carbonyl groups, the selectivity for propylene/propane mixtures increased to 98.1 with 14.1 GPU [19]. Unfortunately, the practical applications of facilitated olefin transport membranes containing Ag ions have been limited because of poor long-term stability [20][21][22]. The instability of these membranes was confirmed to be caused by inactivation of the Ag ions.…”

Section: Introductionmentioning

confidence: 99%

Highly permeable and stabilized olefin transport membranes based on a poly(ethylene oxide) matrix and Al(NO3)3

Song¹,

Kang²,

Kang³

2015

Journal of Membrane Science

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Polymer–ionic liquid composite membranes for propane/propylene separation by facilitated transport

Cited by 74 publications

References 32 publications

Facilitated Transport of Propylene Through Composite Polymer-Ionic Liquid Membranes. Mass Transfer Analysis

Facilitated Transport of Propylene Through Composite Polymer-Ionic Liquid Membranes. Mass Transfer Analysis

Progress in the use of ionic liquids as electrolyte membranes in fuel cells

Highly permeable and stabilized olefin transport membranes based on a poly(ethylene oxide) matrix and Al(NO3)3

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