Volume 43, Issue 11 pp. 2167-2180
Research Article

CH4-Selective Mixed-Matrix Membranes Containing Functionalized Silica for Natural Gas Purification

Seyed Mohammdhadi Mousavi

Seyed Mohammdhadi Mousavi

Islamic Azad University, Department of Analytical Chemistry, Faculty of Engineering, Damghan Baranch, Damghan, Iran

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Ahmadreza Raisi

Corresponding Author

Ahmadreza Raisi

Amirkabir University of Technology (Tehran Polytechnic), Department of Chemical Engineering, Hafez Ave., P.O. Box 15875-4413, Tehran, Iran

Correspondence: Ahmadreza Raisi ([email protected]), Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Hafez Ave., P.O. Box 15875-4413, Tehran, Iran.Search for more papers by this author
Hamid Hashemi Moghaddam

Hamid Hashemi Moghaddam

Islamic Azad University, Department of Analytical Chemistry, Faculty of Engineering, Damghan Baranch, Damghan, Iran

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Mohammad Salehi Maleh

Mohammad Salehi Maleh

Amirkabir University of Technology (Tehran Polytechnic), Department of Chemical Engineering, Hafez Ave., P.O. Box 15875-4413, Tehran, Iran

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First published: 28 August 2020
Citations: 11

Abstract

Mixed-matrix membranes were prepared by incorporating functionalized silica nanoparticles (SNPs) into the poly(ether-block-amide). The gas permeation properties of membranes were investigated for the separation of N2 and CO2 from CH4. Results revealed that chemical modification of SNPs and incorporation of the carboxylic groups on its surface had a strong interaction with the polymer matrix and improved the distribution of the nanofiller in the membrane matrix. According to the gas permeation experiments at various SNPs loadings and feed pressures, different trends were observed for the permeability and selectivity. Incorporation of the modified-SNPs nanofiller into the membrane enhanced the CH4 permeability, as well as the CH4/N2 and CO2/N2 selectivities.

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