Preparation and performance assessment of binary and ternary PES-SAPO 34-HMA based gas separation membranes

Date

2010-11-15

Author

Karatay, Elif
Kalıpçılar, Halil
Yılmaz, Levent

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The effect of low molecular weight additive (LMWA) loading on the gas permeation properties of pure PES and PES/SAPO-34 membranes was investigated. 2-hydroxy 5-methyl aniline (HMA) was selected as LMWA. Membranes were prepared by solvent-evaporation method and annealed above the glass transition temperature (T-g) of PES. They were characterized by single gas permeability measurements of H-2, CO2, and CH4 as well as scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). The H-2/CH4 selectivities of pure PES and SAPO-34/PES membranes were 71.31 and 61.02, respectively. The incorporation of zeolite SAPO-34 to neat PES membranes resulted in higher permeabilities for all gases with slight decrease in CO2/CH4 and H-2/CH4 ideal selectivities compared to pure PES membranes. However, PES/SAPO-34/HMA membranes had significantly higher ideal selectivities than pure PES, PES/SAPO-34, and PES/HMA membranes, for example the H-2/CH4 selectivity of HMA/SAPO-34/PES membrane was 175.8, which was three times as high as the H-2/CH4 selectivity of PES/SAPO-34 membrane. The permeabilities of all the gases through PES/SAPO-34/HMA membranes were also higher than those through PES/HMA membranes. Ternary component membranes revealed better gas permeation performance compared to pure polymeric and binary component membranes.

Subject Keywords

Gas separation, 2-Hydroxy 5-methyl aniline, SAPO-34, Polyethersulfone, Mixed matrix membrane

URI

https://hdl.handle.net/11511/43219

Journal

JOURNAL OF MEMBRANE SCIENCE

DOI

https://doi.org/10.1016/j.memsci.2010.08.004

Collections

Department of Chemical Engineering, Article

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Citation Formats

E. Karatay, H. Kalıpçılar, and L. Yılmaz, “Preparation and performance assessment of binary and ternary PES-SAPO 34-HMA based gas separation membranes,” JOURNAL OF MEMBRANE SCIENCE, pp. 75–81, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43219.