CO2/CH4 and H2/CH4 Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes

This study explored the underlying synergy between titanium dioxide nanotube (TNT) and carbon nanotube (CNT) hybrid fillers in cellulose triacetate (CTA)-based mixed matrix membranes (MMMs) for natural gas purification. The CNT@TNT hybrid nanofillers were blended with CTA polymer and cast as a thin...

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Autores principales:	Chhabilal Regmi, Saeed Ashtiani, Zdeněk Hrdlička, Karel Friess
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cellulose triacetate polymer TNT@CNT hybrid fillers mixed matrix membranes CO<sub>2</sub> and CH<sub>4</sub> separation Chemical technology TP1-1185 Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/3154b2bd431745c587f0cb76f8976148
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spelling	oai:doaj.org-article:3154b2bd431745c587f0cb76f89761482021-11-25T18:19:53ZCO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes10.3390/membranes111108622077-0375https://doaj.org/article/3154b2bd431745c587f0cb76f89761482021-11-01T00:00:00Zhttps://www.mdpi.com/2077-0375/11/11/862https://doaj.org/toc/2077-0375This study explored the underlying synergy between titanium dioxide nanotube (TNT) and carbon nanotube (CNT) hybrid fillers in cellulose triacetate (CTA)-based mixed matrix membranes (MMMs) for natural gas purification. The CNT@TNT hybrid nanofillers were blended with CTA polymer and cast as a thin film by a facile casting technique, after which they were used for single gas separation. The hybrid filler-based membrane depicted a higher CO<sub>2</sub> uptake affinity than the single filler (CNT/TNT)-based membrane. The gas separation results indicate that the hybrid fillers (TNT@CNT) are strongly selective for CO<sub>2</sub> over CH<sub>4</sub> and H<sub>2</sub> over CH<sub>4</sub>. The increment in the CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> selectivities compared to the pristine CTA membrane was 42.98 from 25.08 and 48.43 from 36.58, respectively. Similarly, the CO<sub>2</sub> and H<sub>2</sub> permeability of the CTA-TNT@CNT membrane increased by six- and five-fold, respectively, compared to the pristine CTA membrane. Such significant improvements in CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> separation performance and thermal and mechanical properties suggest a feasible and practical approach for potential biogas upgrading and natural gas purification.Chhabilal RegmiSaeed AshtianiZdeněk HrdličkaKarel FriessMDPI AGarticlecellulose triacetate polymerTNT@CNT hybrid fillersmixed matrix membranesCO<sub>2</sub> and CH<sub>4</sub> separationChemical technologyTP1-1185Chemical engineeringTP155-156ENMembranes, Vol 11, Iss 862, p 862 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cellulose triacetate polymer TNT@CNT hybrid fillers mixed matrix membranes CO<sub>2</sub> and CH<sub>4</sub> separation Chemical technology TP1-1185 Chemical engineering TP155-156
spellingShingle	cellulose triacetate polymer TNT@CNT hybrid fillers mixed matrix membranes CO<sub>2</sub> and CH<sub>4</sub> separation Chemical technology TP1-1185 Chemical engineering TP155-156 Chhabilal Regmi Saeed Ashtiani Zdeněk Hrdlička Karel Friess CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes
description	This study explored the underlying synergy between titanium dioxide nanotube (TNT) and carbon nanotube (CNT) hybrid fillers in cellulose triacetate (CTA)-based mixed matrix membranes (MMMs) for natural gas purification. The CNT@TNT hybrid nanofillers were blended with CTA polymer and cast as a thin film by a facile casting technique, after which they were used for single gas separation. The hybrid filler-based membrane depicted a higher CO<sub>2</sub> uptake affinity than the single filler (CNT/TNT)-based membrane. The gas separation results indicate that the hybrid fillers (TNT@CNT) are strongly selective for CO<sub>2</sub> over CH<sub>4</sub> and H<sub>2</sub> over CH<sub>4</sub>. The increment in the CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> selectivities compared to the pristine CTA membrane was 42.98 from 25.08 and 48.43 from 36.58, respectively. Similarly, the CO<sub>2</sub> and H<sub>2</sub> permeability of the CTA-TNT@CNT membrane increased by six- and five-fold, respectively, compared to the pristine CTA membrane. Such significant improvements in CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> separation performance and thermal and mechanical properties suggest a feasible and practical approach for potential biogas upgrading and natural gas purification.
format	article
author	Chhabilal Regmi Saeed Ashtiani Zdeněk Hrdlička Karel Friess
author_facet	Chhabilal Regmi Saeed Ashtiani Zdeněk Hrdlička Karel Friess
author_sort	Chhabilal Regmi
title	CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes
title_short	CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes
title_full	CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes
title_fullStr	CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes
title_full_unstemmed	CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes
title_sort	co<sub>2</sub>/ch<sub>4</sub> and h<sub>2</sub>/ch<sub>4</sub> gas separation performance of cta-tnt@cnt hybrid mixed matrix membranes
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3154b2bd431745c587f0cb76f8976148
work_keys_str_mv	AT chhabilalregmi cosub2subchsub4subandhsub2subchsub4subgasseparationperformanceofctatntcnthybridmixedmatrixmembranes AT saeedashtiani cosub2subchsub4subandhsub2subchsub4subgasseparationperformanceofctatntcnthybridmixedmatrixmembranes AT zdenekhrdlicka cosub2subchsub4subandhsub2subchsub4subgasseparationperformanceofctatntcnthybridmixedmatrixmembranes AT karelfriess cosub2subchsub4subandhsub2subchsub4subgasseparationperformanceofctatntcnthybridmixedmatrixmembranes
_version_	1718411309854228480

CO<sub>2</sub>/CH<sub>4</sub> and H<sub>2</sub>/CH<sub>4</sub> Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes

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