A novel CO2 utilization technology for the synergistic co-production of multi-walled carbon nanotubes and syngas

Abstract Dry reforming of methane (DRM) is a well-known process in which CH4 and CO2 catalytically react to produce syngas. Solid carbon is a well-known byproduct of the DRM but is undesirable as it leads to catalyst deactivation. However, converting CO2 and CH4 into solid carbon serves as a promisi...

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Autores principales:	Mohamed S. Challiwala, Hanif A. Choudhury, Dingdi Wang, Mahmoud M. El-Halwagi, Eric Weitz, Nimir O. Elbashir
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c74fa385b4a2493ebbbe29277056d6b6
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spelling	oai:doaj.org-article:c74fa385b4a2493ebbbe29277056d6b62021-12-02T14:12:09ZA novel CO2 utilization technology for the synergistic co-production of multi-walled carbon nanotubes and syngas10.1038/s41598-021-80986-22045-2322https://doaj.org/article/c74fa385b4a2493ebbbe29277056d6b62021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-80986-2https://doaj.org/toc/2045-2322Abstract Dry reforming of methane (DRM) is a well-known process in which CH4 and CO2 catalytically react to produce syngas. Solid carbon is a well-known byproduct of the DRM but is undesirable as it leads to catalyst deactivation. However, converting CO2 and CH4 into solid carbon serves as a promising carbon capture and sequestration technique that has been demonstrated in this study by two patented processes. In the first process, known as CARGEN technology (CARbon GENerator), a novel concept of two reactors in series is developed that separately convert the greenhouse gases (GHGs) into multi-walled carbon nanotubes (MWCNTs) and syngas. CARGEN enables at least a 50% reduction in energy requirement with at least 65% CO2 conversion compared to the DRM process. The second process presents an alternative pathway for the regeneration/reactivation of the spent DRM/CARGEN catalyst using CO2. Provided herein is the first report on an experimental demonstration of a 'switching' technology in which CO2 is utilized in both the operation and the regeneration cycles and thus, finally contributing to the overall goal of CO2 fixation. The following studies support all the results in this work: physisorption, chemisorption, XRD, XPS, SEM, TEM, TGA, ICP, and Raman analysis.Mohamed S. ChalliwalaHanif A. ChoudhuryDingdi WangMahmoud M. El-HalwagiEric WeitzNimir O. ElbashirNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mohamed S. Challiwala Hanif A. Choudhury Dingdi Wang Mahmoud M. El-Halwagi Eric Weitz Nimir O. Elbashir A novel CO2 utilization technology for the synergistic co-production of multi-walled carbon nanotubes and syngas
description	Abstract Dry reforming of methane (DRM) is a well-known process in which CH4 and CO2 catalytically react to produce syngas. Solid carbon is a well-known byproduct of the DRM but is undesirable as it leads to catalyst deactivation. However, converting CO2 and CH4 into solid carbon serves as a promising carbon capture and sequestration technique that has been demonstrated in this study by two patented processes. In the first process, known as CARGEN technology (CARbon GENerator), a novel concept of two reactors in series is developed that separately convert the greenhouse gases (GHGs) into multi-walled carbon nanotubes (MWCNTs) and syngas. CARGEN enables at least a 50% reduction in energy requirement with at least 65% CO2 conversion compared to the DRM process. The second process presents an alternative pathway for the regeneration/reactivation of the spent DRM/CARGEN catalyst using CO2. Provided herein is the first report on an experimental demonstration of a 'switching' technology in which CO2 is utilized in both the operation and the regeneration cycles and thus, finally contributing to the overall goal of CO2 fixation. The following studies support all the results in this work: physisorption, chemisorption, XRD, XPS, SEM, TEM, TGA, ICP, and Raman analysis.
format	article
author	Mohamed S. Challiwala Hanif A. Choudhury Dingdi Wang Mahmoud M. El-Halwagi Eric Weitz Nimir O. Elbashir
author_facet	Mohamed S. Challiwala Hanif A. Choudhury Dingdi Wang Mahmoud M. El-Halwagi Eric Weitz Nimir O. Elbashir
author_sort	Mohamed S. Challiwala
title	A novel CO2 utilization technology for the synergistic co-production of multi-walled carbon nanotubes and syngas
title_short	A novel CO2 utilization technology for the synergistic co-production of multi-walled carbon nanotubes and syngas
title_full	A novel CO2 utilization technology for the synergistic co-production of multi-walled carbon nanotubes and syngas
title_fullStr	A novel CO2 utilization technology for the synergistic co-production of multi-walled carbon nanotubes and syngas
title_full_unstemmed	A novel CO2 utilization technology for the synergistic co-production of multi-walled carbon nanotubes and syngas
title_sort	novel co2 utilization technology for the synergistic co-production of multi-walled carbon nanotubes and syngas
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c74fa385b4a2493ebbbe29277056d6b6
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A novel CO2 utilization technology for the synergistic co-production of multi-walled carbon nanotubes and syngas

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