Copolyimide Brushes as a Component of a Hybrid Poly(phenylene Oxide) Membrane for Controlling Gas Separation: Effect of Water, Methanol, and Hexane Vapors
-
Published:2023-09-20
Issue:9
Volume:13
Page:805
-
ISSN:2077-0375
-
Container-title:Membranes
-
language:en
-
Short-container-title:Membranes
Author:
Tian Nadezhda1, Pulyalina Alexandra12ORCID, Faykov Ilya1, Gofman Iosif3, Zolotovsky Konstantin1, Polotskaya Galina13ORCID
Affiliation:
1. Institute of Chemistry, Saint Petersburg State University, 198504 Saint Petersburg, Russia 2. Nanomaterial Research Center, Kola Science Center, Russian Academy of Sciences, 184209 Apatity, Russia 3. Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia
Abstract
The effect of water, methanol, and hexane vapors on gas permeability was studied in a hybrid membrane containing 5 wt% copolyimide brushes with poly(methyl methacrylate) side chains (PI-g-PMMA) in a poly(phenylene oxide) (PPO) matrix, and in a pristine PPO membrane. These membranes in the form of dense nonporous films were further examined by atomic force microscopy (AFM) and scanning electron microscopy (SEM), as well as by measuring their mechanical and gas transport properties. A gas separation study of the membranes in a dry state and the membranes saturated with water, methanol, and hexane vapors was performed to estimate the effect of each vapor on the H2, CO2, N2 permeability and selectivity in the separation of H2/N2 and CO2/N2 pairs. In general, saturation with water, methanol, and hexane vapors caused a decrease in the gas permeability of both membranes. The hybrid membrane containing copolyimide brushes demonstrated enhanced selectivity in the separation of H2/N2 and CO2/N2 pairs. It was found that a special effect of the vapors used for membrane saturation is associated with their molar volume. The solubility and diffusion coefficients of N2 and CO2 were obtained by Grand Canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations.
Funder
Russian Science Foundation
Subject
Filtration and Separation,Chemical Engineering (miscellaneous),Process Chemistry and Technology
Reference54 articles.
1. Ananenkov, A.G., and Mastepanov, A.M. (2010). Gas Industry in Russia at the Turn of XX and XXI Centuries: Some Results and Prospects, Gazoil Press. 2. Bazhenova, O.K., Burlin, Y.K., Sokolov, B.A., and Khain, V.E. (2012). Geology and Geochemistry of Oil and Gas, MSU Press. 3. Fink, J.K. (2013). Hydraulic Fracturing Chemicals and Fluids Technology, Elsevier. 4. Miroshnichenko, D., Teplyakov, V., and Shalygin, M. (2022). Recovery of Methanol during Natural Gas Dehydration Using Polymeric Membranes: Modeling of the Process. Membranes, 12. 5. Natural Gas Processing with Membranes: An Overview;Baker;Ind. Eng. Chem. Res.,2008
|
|