Atomic level transition of graphene layer to carbon nanotubes over cobalt during ethanol decomposition reaction
<p dir="ltr">Herein we report the catalytic ethanol decomposition over cobalt catalyst synthesized using conventional solution <u>combustion synthesis</u> (SCS). The reaction pathway proposed in-situ DRIFT analysis shows that the <u>decomposition reaction</u>...
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2024
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| _version_ | 1864513513476587520 |
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| author | Anchu Ashok (14152020) |
| author2 | Anand Kumar (24122) |
| author2_role | author |
| author_facet | Anchu Ashok (14152020) Anand Kumar (24122) |
| author_role | author |
| dc.creator.none.fl_str_mv | Anchu Ashok (14152020) Anand Kumar (24122) |
| dc.date.none.fl_str_mv | 2024-06-21T09:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.ijhydene.2024.01.070 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Atomic_level_transition_of_graphene_layer_to_carbon_nanotubes_over_cobalt_during_ethanol_decomposition_reaction/30197014 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Chemical engineering Materials engineering Ethanol decomposition Graphene layers Carbon nanofiber Hydrogen production |
| dc.title.none.fl_str_mv | Atomic level transition of graphene layer to carbon nanotubes over cobalt during ethanol decomposition reaction |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">Herein we report the catalytic ethanol decomposition over cobalt catalyst synthesized using conventional solution <u>combustion synthesis</u> (SCS). The reaction pathway proposed in-situ DRIFT analysis shows that the <u>decomposition reaction</u> proceeds through the formation of surface ethoxy intermediates that transformed into acetates and aldehydes which further decompose to releases CH<sub>4</sub>, H<sub>2</sub> and CO<sub>2</sub> with some deposition of carbon on the catalyst surface. The <u>catalytic reaction</u> shows 100 % ethanol conversion at 420 °C, with high selectivity of H<sub>2</sub> in the output. The structural transformation of the catalyst and deposited carbon was analyzed using high-resolution transmission electron microscope (HRTEM). Presence of small Co <u>nanoparticles</u> (size <30 nm) surrounded with graphene and larger <u>metal nanoparticles</u> trapped inside MWCNTs was visible during a stability run over 50 h that motivates in proposing the reaction mechanism of the fluctuating metal nanoparticle along with carbon on the catalyst surface. Moreover, this work opens up the possibility of synthesizing highly dispersed Co <u>nanoparticles</u> in an efficient way without any complex experimental procedures and equipment that can further be used as effective catalysts in many industrial reactions.</p><h2>Other Information</h2><p dir="ltr">Published in: International Journal of Hydrogen Energy<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.ijhydene.2024.01.070" target="_blank">https://dx.doi.org/10.1016/j.ijhydene.2024.01.070</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_049aaf1171ba1a9eccdb263efd9ece6b |
| identifier_str_mv | 10.1016/j.ijhydene.2024.01.070 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/30197014 |
| publishDate | 2024 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Atomic level transition of graphene layer to carbon nanotubes over cobalt during ethanol decomposition reactionAnchu Ashok (14152020)Anand Kumar (24122)EngineeringChemical engineeringMaterials engineeringEthanol decompositionGraphene layersCarbon nanofiberHydrogen production<p dir="ltr">Herein we report the catalytic ethanol decomposition over cobalt catalyst synthesized using conventional solution <u>combustion synthesis</u> (SCS). The reaction pathway proposed in-situ DRIFT analysis shows that the <u>decomposition reaction</u> proceeds through the formation of surface ethoxy intermediates that transformed into acetates and aldehydes which further decompose to releases CH<sub>4</sub>, H<sub>2</sub> and CO<sub>2</sub> with some deposition of carbon on the catalyst surface. The <u>catalytic reaction</u> shows 100 % ethanol conversion at 420 °C, with high selectivity of H<sub>2</sub> in the output. The structural transformation of the catalyst and deposited carbon was analyzed using high-resolution transmission electron microscope (HRTEM). Presence of small Co <u>nanoparticles</u> (size <30 nm) surrounded with graphene and larger <u>metal nanoparticles</u> trapped inside MWCNTs was visible during a stability run over 50 h that motivates in proposing the reaction mechanism of the fluctuating metal nanoparticle along with carbon on the catalyst surface. Moreover, this work opens up the possibility of synthesizing highly dispersed Co <u>nanoparticles</u> in an efficient way without any complex experimental procedures and equipment that can further be used as effective catalysts in many industrial reactions.</p><h2>Other Information</h2><p dir="ltr">Published in: International Journal of Hydrogen Energy<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.ijhydene.2024.01.070" target="_blank">https://dx.doi.org/10.1016/j.ijhydene.2024.01.070</a></p>2024-06-21T09:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.ijhydene.2024.01.070https://figshare.com/articles/journal_contribution/Atomic_level_transition_of_graphene_layer_to_carbon_nanotubes_over_cobalt_during_ethanol_decomposition_reaction/30197014CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/301970142024-06-21T09:00:00Z |
| spellingShingle | Atomic level transition of graphene layer to carbon nanotubes over cobalt during ethanol decomposition reaction Anchu Ashok (14152020) Engineering Chemical engineering Materials engineering Ethanol decomposition Graphene layers Carbon nanofiber Hydrogen production |
| status_str | publishedVersion |
| title | Atomic level transition of graphene layer to carbon nanotubes over cobalt during ethanol decomposition reaction |
| title_full | Atomic level transition of graphene layer to carbon nanotubes over cobalt during ethanol decomposition reaction |
| title_fullStr | Atomic level transition of graphene layer to carbon nanotubes over cobalt during ethanol decomposition reaction |
| title_full_unstemmed | Atomic level transition of graphene layer to carbon nanotubes over cobalt during ethanol decomposition reaction |
| title_short | Atomic level transition of graphene layer to carbon nanotubes over cobalt during ethanol decomposition reaction |
| title_sort | Atomic level transition of graphene layer to carbon nanotubes over cobalt during ethanol decomposition reaction |
| topic | Engineering Chemical engineering Materials engineering Ethanol decomposition Graphene layers Carbon nanofiber Hydrogen production |