Catalytic Ionic-Liquid Membranes: The Convergence of Ionic-Liquid Catalysis and Ionic-Liquid Membrane Separation Technologies

ChemPlusChem ◽  
2017 ◽  
Vol 83 (1) ◽  
pp. 7-18 ◽  
Author(s):  
Pavel Izák ◽  
Felix D. Bobbink ◽  
Martin Hulla ◽  
Martina Klepic ◽  
Karel Friess ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Membrane ◽  
Membrane Separation ◽  
Liquid Membranes

Constructing CO2-facilitated transport highway in supported ionic liquid membranes

2014 ◽  
Vol 07 (02) ◽  
pp. 1450012 ◽  
Author(s):  
Xiang Jun Sun ◽  
Ju Jie Luo ◽  
Meng Zhang ◽  
Jin Ping Li
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Upper Bound ◽  
Liquid Membrane ◽  
Facilitated Transport ◽  
Reversible Reaction ◽  
Liquid Membranes ◽  
Supported Ionic Liquid ◽  
Selective Membrane ◽  
Supported Ionic Liquid Membranes

A Carbon dioxide-facilitated transport highway ( CO 2-FTH) on the microporous surface of a membrane matrix was designed using the amino carrier 3-aminopropyltriethoxysilane (APTES). Owing to the reversible reaction between CO 2 molecules and fixed-site carriers, this supported ionic liquid membrane was able to selectively transfer CO 2 more quickly. This concept may inspire means of fabricating a highly permeable and selective membrane to break through Robeson's upper bound.

scholarly journals Facilitated Chromium(VI) Transport across an Ionic Liquid Membrane Impregnated with Cyphos IL102

Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2437 ◽  
Author(s):  
Francisco Jose Alguacil
Keyword(s):  
Ionic Liquid ◽  
Liquid Membrane ◽  
Present System ◽  
Liquid Membranes ◽  
Green Solvents ◽  
Chromium Vi ◽  
Aqueous Streams ◽  
Hazardous Element ◽  
General Concern ◽  
Key Parameter

Chromium(VI) is a well-known hazardous element, thus, its removal from aqueous sources is of a general concern. Among the technologies used for the removal of this type of toxic elements, liquid membranes are gaining in importance and the same has occurred with the use of ionic liquids, considered for many, due to their properties, as green solvents. Thus, the present work joined the three previous points, presenting an experimental study about the removal of chromium(VI) by the use of a liquid membrane operation which used the commercially available Cyphos IL102 ionic liquid as a carrier. The experimental variables included: the stirring speed applied to the feed and receiving solution (a key-parameter to gain maximum transport), acid, chromium(VI), sodium hydroxide and Cyphos IL102 concentrations in their various phases. Additionally, the performance of the present system was evaluated both against the presence of other metals in solution and other carriers. The experimental results confirmed that Cyphos IL102 is a good carrier for chromium(VI) transport and, thus, its removal from aqueous streams, and it also performed well in the presence of accompanying metals and against the performance of other commercially available carriers.

scholarly journals Key Applications and Potential Limitations of Ionic Liquid Membranes in the Gas Separation Process of CO2, CH4, N2, H2 or Mixtures of These Gases from Various Gas Streams

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4274
Author(s):  
Salma Elhenawy ◽  
Majeda Khraisheh ◽  
Fares AlMomani ◽  
Mohamed Hassan
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Gas Separation ◽  
Membrane Separation ◽  
Mixed Matrix Membranes ◽  
Liquid Membranes ◽  
Mixed Gas ◽  
Gas Streams ◽  
Wide Range ◽  
Carbon Dioxide Co2

Heightened levels of carbon dioxide (CO2) and other greenhouse gases (GHGs) have prompted research into techniques for their capture and separation, including membrane separation, chemical looping, and cryogenic distillation. Ionic liquids, due to their negligible vapour pressure, thermal stability, and broad electrochemical stability have expanded their application in gas separations. This work provides an overview of the recent developments and applications of ionic liquid membranes (ILMs) for gas separation by focusing on the separation of carbon dioxide (CO2), methane (CH4), nitrogen (N2), hydrogen (H2), or mixtures of these gases from various gas streams. The three general types of ILMs, such as supported ionic liquid membranes (SILMs), ionic liquid polymeric membranes (ILPMs), and ionic liquid mixed-matrix membranes (ILMMMs) for the separation of various mixed gas systems, are discussed in detail. Furthermore, issues, challenges, computational studies and future perspectives for ILMs are also considered. The results of the analysis show that SILMs, ILPMs, and the ILMMs are very promising membranes that have great potential in gas separation processes. They offer a wide range of permeabilities and selectivities for CO2, CH4, N2, H2 or mixtures of these gases. In addition, a comparison was made based on the selectivity and permeability of SILMs, ILPMs, and ILMMMs for CO2/CH4 separation based on a Robeson’s upper bound curves.

Ionic Liquid Membrane for Carbon Capture and Separation

2021 ◽  
pp. 1-20
Author(s):  
M. Zunita ◽  
R. Hastuti ◽  
A. Alamsyah ◽  
K. Khoiruddin ◽  
I. G. Wenten
Keyword(s):  
Ionic Liquid ◽  
Carbon Capture ◽  
Liquid Membrane

scholarly journals Investigating the Proton and Ion Transfer Properties of Supported Ionic Liquid Membranes Prepared for Bioelectrochemical Applications Using Hydrophobic Imidazolium-Type Ionic Liquids

Membranes ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 359
Author(s):  
László Koók ◽  
Piroska Lajtai-Szabó ◽  
Péter Bakonyi ◽  
Katalin Bélafi-Bakó ◽  
Nándor Nemestóthy
Keyword(s):  
Mass Transfer ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Microbial Fuel Cells ◽  
Transport Numbers ◽  
Liquid Membranes ◽  
Ion Transfer ◽  
Supported Ionic Liquid ◽  
Supported Ionic Liquid Membranes ◽  
Transfer Properties

Hydrophobic ionic liquids (IL) may offer a special electrolyte in the form of supported ionic liquid membranes (SILM) for microbial fuel cells (MFC) due to their advantageous mass transfer characteristics. In this work, the proton and ion transfer properties of SILMs made with IL containing imidazolium cation and [PF6]− and [NTf2]− anions were studied and compared to Nafion. It resulted that both ILs show better proton mass transfer and diffusion coefficient than Nafion. The data implied the presence of water microclusters permeating through [hmim][PF6]-SILM to assist the proton transfer. This mechanism could not be assumed in the case of [NTf2]− containing IL. Ion transport numbers of K+, Na+, and H+ showed that the IL with [PF6]− anion could be beneficial in terms of reducing ion transfer losses in MFCs. Moreover, the conductivity of [bmim][PF6]-SILM at low electrolyte concentration (such as in MFCs) was comparable to Nafion.

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