Metal–organic framework supported ionic liquid membranes for CO2 capture: anion effects

Gupta, Krishna M.; Chen, Yifei; Hu, Zhongqiao; Jiang, Jianwen

doi:10.1039/c2cp23972h

Cited by 127 publications

(119 citation statements)

References 47 publications

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“…Permeation selectivity is usually used to quantitatively study the gas separation performance of membranes and can be estimated as the product of adsorption and diffusion selectivity for a binary mixture [14,31,32], Spermi/j = Sadsi/j × Sdiffi/j. The results of CO2/N2 gas mixtures in bio-MOF-11 are given in Figure 10 and the information of other materials are taken from [33][34][35]. It is clearly noted that bio-MOF-11 exhibits higher membrane selectivity than most of the materials studied because of the high adsorption selectivity.…”

Section: Effect Of Temperature On Adsorption Selectivity In Bio-mof-11mentioning

confidence: 97%

Molecular Simulation Studies of Flue Gas Purification by Bio-MOF

Zhi

Liu

et al. 2015

Energies

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Abstract:As a new branch of MOFs which are composed of biocompatible metal ions and organic ligands, bio-metal-organic frameworks (bio-MOFs) have attracted much attention recently. Bio-MOFs feature multiple Lewis basic sites which have strong interaction with CO2 molecules, thus they have great potential in the separation and purification of gas mixtures containing CO2. In this work, molecular simulation studies were carried out to investigate the adsorption and diffusion behaviors of CO2/N2 gas mixtures in bio-MOF-11. Results show that bio-MOF-11 displays excellent adsorption selectivity towards CO2 in CO2/N2 gas mixtures which was dominated by electrostatic interaction between material and CO2. In addition, we found both CO2 and N2 molecules were preferably adsorbed around the pyrimidine ring and exocyclic amino and transferred to the secondary favorable adsorption sites (methyl groups) with increasing pressure. Bio-MOF-11 membranes show superior permeation selectivity, but low permeability for CO2/N2 gas systems. The reason is that the small pores restrict the movement of gas molecules, leading to the observed low permeability. The information obtained in this work can be applied to other theoretical and experimental studies of bio-MOFs adsorbents and membranes in the future.

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Section: Effect Of Temperature On Adsorption Selectivity In Bio-mof-11mentioning

confidence: 97%

Molecular Simulation Studies of Flue Gas Purification by Bio-MOF

Zhi

Liu

et al. 2015

Energies

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“…Ionic liquid incorporated MOFs have been studied widely in the fields of catalysis 23,24 and gas adsorbents. 25 Very recently H. Kitagawa et al 26 studied lithium ion diffusion in ionic liquid incorporated MOFs. In these studies, ionic conductivity and Li ion diffusion was looked upon.…”

mentioning

confidence: 99%

Modified Metal Organic Frameworks (MOFs)/Ionic Liquid Matrices for Efficient Charge Storage

Singh

Vedarajan

Matsumi

2017

J. Electrochem. Soc.

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In this study, an ionic liquid incorporated modified MOF was synthesized to serve as an efficient electrolyte system for Li-ion batteries. Further, the MOF (IL) was doped with a lithium salt, lithium bis(triflouromethylsulfonyl) imide (LiTFSI) by a modified procedure. Samples with varying amount of MOF (IL) in ionic liquid were prepared, characterized and evaluated for their electrochemical behavior. A high conductivity in order of 10 −2 -10 −3 Scm −1 at 51 • C and a low activation energy of ion transport was observed in all samples. The systems showed high electrochemical stability to be employed as gel electrolyte in Li ion secondary batteries. These systems showed highly reversible capacity of over 3000 mAhg −1 in the charge-discharge studies carried out after fabricating anodic half-cell composed of Si/electrolyte/Li. These results illustrate the feasibility of the prepared modified MOF (IL) as potential solid state electrolytes for Li ion secondary batteries.

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“…Gupta and co-workers [142,145] conducted molecular simulation to investigate CO 2 capture in MOF supported IL membranes. In the first study, were used IRMOF-1 and four IL consisting of identical cation 1-n-butyl-3-methylimidazolium 1, [SCN] was identified to be the most favorable site for CO 2 adsorption.…”

Section: Computational Studiesmentioning

confidence: 99%