Characterization of polysulfone/diisopropylamine 1‐alkyl‐3‐methylimidazolium ionic liquid membranes: high pressure gas separation applications

Khraisheh, Majeda; Zadeh, Khadija M.; Alkhouzaam, Abedalkader; Turki, Dorra; Hassan, Mohammad K.; Momani, Fares Al; Zaidi, S. M. Javaid

doi:10.1002/ghg.2006

Cited by 18 publications

(7 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This value was close to that (190–200°C) of most literatures 29,32,33 . The literature reported that the T g value of the PSF membrane was 142°C 34 . The T g value of the CM‐ PSF membrane decreased to 173°C, and the T g value of the T‐PSF membrane further decreased to 158.24°C.…”

Section: Resultssupporting

confidence: 86%

“…close to that (190-200 C) of most literatures. 29,32,33 The literature reported that the T g value of the PSF membrane was 142 C. 34 The T g value of the CM-PSF membrane decreased to 173 C, and the T g value of the T-PSF membrane further decreased to 158.24 C. This phenomenon was reported in literature 27 : The T g value of CM-PSF decreased from 183 to 158 C, which depended on the grafting degree. Higher grafting degree resulted in lower glass transition temperature.…”

Section: Thermal Behavior Of the Membranesmentioning

confidence: 65%

See 1 more Smart Citation

Modification and acidification of polysulfone as effective strategies to enhance adsorptive ability of chromium (VI) and separation properties of ultrafiltration membrane

Huang

Cai

Zhou

2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

In order to improve the hydropilicity, polysulfone was first modified by grafting diethanolamine and further made into the ultrafiltration membranes by a phase inversion process. Ultrafiltration membranes were characterized by nuclear magnetic resonance spectrum, contact angle, thermogravimetric analysis, differential scanning calorimetry, scanning electron microscopy, adsorption, and ultrafiltration experiments. The ultrafiltration membrane containing tertiary amine groups had a 99.2% rejection to bovine serum albumin (BSA), 235.2 L m−2 h−1 pure water flux and 78.6% flux recovery rate. Usually, the ultrafiltration membrane containing tertiary amine groups has a low rejection and a poor adsorptive ability to Cr(VI) in the neutral condition. A novel strategy of acidification in advance was adopted to adjust the separation performance of the polysulfone ultrafiltration membrane containing tertiary amine groups. The pre‐acidification strategy could improve the Cr(VI) rejection from below 10% to 100% in the neutral condition, since ultrafiltration membranes acidified in advance did not lose its H+ in storage. Moreover, the acidification could improve the glass transition temperature and only caused a slight decrease of water flux and BSA rejection.

show abstract

Section: Resultssupporting

confidence: 86%

Section: Thermal Behavior Of the Membranesmentioning

confidence: 65%

Modification and acidification of polysulfone as effective strategies to enhance adsorptive ability of chromium (VI) and separation properties of ultrafiltration membrane

Huang

Cai

Zhou

2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Moreover, there are some peaks of THF and CF-casted membranes appeared at 2851, 2870, 2927, 3037, and 3096 cm −1 . The peaks of 2851, 2870, and 2927 refer to C-H stretching in the alkene group in THF-casted membrane or CF-casted membrane as well [31]. Overall, it can be seen that intensities of THF peaks are higher than the intensities of CF peaks.…”

Section: Characterizationmentioning

confidence: 90%

Influence of Casting Solvents on CO2/CH4 Separation Using Polysulfone Membranes

et al. 2021

Self Cite

View full text Add to dashboard Cite

Polysulfone membranes exhibit resistance to high temperature with low manufacturing cost and high efficiency in the separation process. The composition of gases is an important step that estimates the efficiency of separation in membranes. As membrane types are currently becoming in demand for CO2/CH4 segregation, polysulfone will be an advantageous alternative to have in further studies. Therefore, research is undertaken in this study to evaluate two solvents: chloroform (CF) and tetrahydrofuran (THF). These solvents are tested for casting polymeric membranes from polysulfone (PSF) to separate every single component from a binary gas mixture of CO2/CH4. In addition, the effect of gas pressure was conducted from 1 to 10 bar on the behavior of the permeability and selectivity. The results refer to the fact that the maximum permeability of CO2 and CH4 for THF is 62.32 and 2.06 barrer at 1 and 2 bars, respectively. Further, the maximum permeability of CF is 57.59 and 2.12 barrer at 1 and 2 bars, respectively. The outcome selectivity values are 48 and 36 for THF and CF at 1 bar, accordingly. Furthermore, the study declares that with the increase in pressure, the permeability and selectivity values drop for CF and THF. The performance for polysulfone (PSF) membrane that is manufactured with THF is superior to that of CF relative to the Robeson upper bound. Therefore, through the results, it can be deduced that the solvent during in-situ synthesis has a significant influence on the gas separation of a binary mixture of CO2/CH4.

show abstract

“…Khraisheh et al [97] used microporous polysulfone matrix (PSF) impregnated with different concentrations of ionic liquids: 1-Ethyl-3-methylimidazolium hexa fluorophosphate ([Bmim][PF 6 ]) and bis(trifluoromethylsulfonyl) imide ([Emim][Tf 2 N]). The small addition of IL to the PSF matrix enhanced both CO 2 permeability and selectivity.…”

Section: Membrane Separationmentioning

confidence: 99%

Comparison of CO2 Separation Efficiency from Flue Gases Based on Commonly Used Methods and Materials

Ziobrowski

Rotkegel

2022

Materials

View full text Add to dashboard Cite

The comparison study of CO2 removal efficiency from flue gases at low pressures and temperatures is presented, based on commonly used methods and materials. Our own experimental results were compared and analyzed for different methods of CO2 removal from flue gases: absorption in a packed column, adsorption in a packed column and membrane separation on polymeric and ceramic membranes, as well as on the developed supported ionic liquid membranes (SILMs). The efficiency and competitiveness comparison of the investigated methods showed that SILMs obtained by coating of the polydimethylsiloxane (PDMS) membrane with 1-ethyl-3-methylimidazolium acetate ([Emim][Ac]) exhibit a high ideal CO2/N2 selectivity of 152, permeability of 2400 barrer and long term stability. Inexpensive and selective SILMs were prepared applying commercial membranes. Under similar experimental conditions, the absorption in aqueous Monoethanolamine (MEA) solutions is much faster than in ionic liquids (ILs), but gas and liquid flow rates in packed column sprayed with IL are limited due to the much higher viscosity and lower diffusion coefficient of IL. For CO2 adsorption on activated carbons impregnated with amine or IL, only a small improvement in the adsorption properties was achieved. The experimental research was compared with the literature data to find a feasible solution based on commercially available methods and materials.

show abstract

Characterization of polysulfone/diisopropylamine 1‐alkyl‐3‐methylimidazolium ionic liquid membranes: high pressure gas separation applications

Cited by 18 publications

References 49 publications

Modification and acidification of polysulfone as effective strategies to enhance adsorptive ability of chromium (VI) and separation properties of ultrafiltration membrane

Modification and acidification of polysulfone as effective strategies to enhance adsorptive ability of chromium (VI) and separation properties of ultrafiltration membrane

Influence of Casting Solvents on CO2/CH4 Separation Using Polysulfone Membranes

Comparison of CO2 Separation Efficiency from Flue Gases Based on Commonly Used Methods and Materials

Contact Info

Product

Resources

About