A promising CO<sub>2</sub> methanation catalyst system based on modified halloysites as supports
<p dir="ltr">Earth’s climate is warming due to anthropogenic emissions of greenhouse gases, especially carbon dioxide (CO2). Different reactions are allocated to mitigate the CO<sub>2</sub> in the atmosphere. However, CO<sub>2</sub> methanation is a pivotal re...
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2025
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| _version_ | 1864513538475687936 |
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| author | Ahmed Gamal (14112864) |
| author2 | Khouloud Jlassi (2583832) Khulood Shafi (22330096) Mohamed M. Chehimi (2079574) Aboubakr M. Abdullah (1505017) |
| author2_role | author author author author |
| author_facet | Ahmed Gamal (14112864) Khouloud Jlassi (2583832) Khulood Shafi (22330096) Mohamed M. Chehimi (2079574) Aboubakr M. Abdullah (1505017) |
| author_role | author |
| dc.creator.none.fl_str_mv | Ahmed Gamal (14112864) Khouloud Jlassi (2583832) Khulood Shafi (22330096) Mohamed M. Chehimi (2079574) Aboubakr M. Abdullah (1505017) |
| dc.date.none.fl_str_mv | 2025-01-27T09:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1007/s42247-024-00929-1 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/A_promising_CO_sub_2_sub_methanation_catalyst_system_based_on_modified_halloysites_as_supports/30233653 |
| 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 Halloysite nanotubes Nanocatalysts Methanation CO2 utilization |
| dc.title.none.fl_str_mv | A promising CO<sub>2</sub> methanation catalyst system based on modified halloysites as supports |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">Earth’s climate is warming due to anthropogenic emissions of greenhouse gases, especially carbon dioxide (CO2). Different reactions are allocated to mitigate the CO<sub>2</sub> in the atmosphere. However, CO<sub>2</sub> methanation is a pivotal research hotspot due to its ability to produce methane at low operating temperatures (200–400 °C). Halloysite nanotubes (HNTs)-based catalysts have attracted significant attention in various catalytic applications. However, Halloysite is rarely reported for thermal CO<sub>2</sub> methanation. The selected halloysite clay was modified first using the 3-Aminopropyl triethoxy silane (NH2) as coupling agent, the resulting materials (HNTs), and then doped with Ni at different weight concentrations (5%, 10%, 20%, 40%, 50%). materials can offer high surface area and porous structure, which can improve metal dispersion. The prepared Ni/HNTs catalysts were characterized using various techniques, such as XRD, XPS, SEM, and TEM, which confirmed the existence of nanotubes and porous structures. The propensity of the prepared Ni/HNTs were evaluated to catalyse the CO<sub>2</sub> methanation reactions at a temperature range of 250 to 500 ̊C. The catalyst containing 20 wt.% of Ni (20Ni/HNTs) showed the highest CO<sub>2</sub> conversion at all reaction temperatures and the highest selectivity of methane at 450 °C (82%). This study paves the way for the large utilization of the HNTs as a strong support for different metals used in thermal catalytic reactions, not limited to the CO<sub>2</sub> methanation.</p><h2>Other Information</h2><p dir="ltr">Published in: Emergent Materials<br>License: <a href="https://creativecommons.org/licenses/by/4.0" target="_blank">https://creativecommons.org/licenses/by/4.0</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1007/s42247-024-00929-1" target="_blank">https://dx.doi.org/10.1007/s42247-024-00929-1</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_dc3bd894f61fe5c583e7e1fa6e509ffa |
| identifier_str_mv | 10.1007/s42247-024-00929-1 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/30233653 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | A promising CO<sub>2</sub> methanation catalyst system based on modified halloysites as supportsAhmed Gamal (14112864)Khouloud Jlassi (2583832)Khulood Shafi (22330096)Mohamed M. Chehimi (2079574)Aboubakr M. Abdullah (1505017)EngineeringChemical engineeringMaterials engineeringHalloysite nanotubesNanocatalystsMethanationCO2 utilization<p dir="ltr">Earth’s climate is warming due to anthropogenic emissions of greenhouse gases, especially carbon dioxide (CO2). Different reactions are allocated to mitigate the CO<sub>2</sub> in the atmosphere. However, CO<sub>2</sub> methanation is a pivotal research hotspot due to its ability to produce methane at low operating temperatures (200–400 °C). Halloysite nanotubes (HNTs)-based catalysts have attracted significant attention in various catalytic applications. However, Halloysite is rarely reported for thermal CO<sub>2</sub> methanation. The selected halloysite clay was modified first using the 3-Aminopropyl triethoxy silane (NH2) as coupling agent, the resulting materials (HNTs), and then doped with Ni at different weight concentrations (5%, 10%, 20%, 40%, 50%). materials can offer high surface area and porous structure, which can improve metal dispersion. The prepared Ni/HNTs catalysts were characterized using various techniques, such as XRD, XPS, SEM, and TEM, which confirmed the existence of nanotubes and porous structures. The propensity of the prepared Ni/HNTs were evaluated to catalyse the CO<sub>2</sub> methanation reactions at a temperature range of 250 to 500 ̊C. The catalyst containing 20 wt.% of Ni (20Ni/HNTs) showed the highest CO<sub>2</sub> conversion at all reaction temperatures and the highest selectivity of methane at 450 °C (82%). This study paves the way for the large utilization of the HNTs as a strong support for different metals used in thermal catalytic reactions, not limited to the CO<sub>2</sub> methanation.</p><h2>Other Information</h2><p dir="ltr">Published in: Emergent Materials<br>License: <a href="https://creativecommons.org/licenses/by/4.0" target="_blank">https://creativecommons.org/licenses/by/4.0</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1007/s42247-024-00929-1" target="_blank">https://dx.doi.org/10.1007/s42247-024-00929-1</a></p>2025-01-27T09:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1007/s42247-024-00929-1https://figshare.com/articles/journal_contribution/A_promising_CO_sub_2_sub_methanation_catalyst_system_based_on_modified_halloysites_as_supports/30233653CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/302336532025-01-27T09:00:00Z |
| spellingShingle | A promising CO<sub>2</sub> methanation catalyst system based on modified halloysites as supports Ahmed Gamal (14112864) Engineering Chemical engineering Materials engineering Halloysite nanotubes Nanocatalysts Methanation CO2 utilization |
| status_str | publishedVersion |
| title | A promising CO<sub>2</sub> methanation catalyst system based on modified halloysites as supports |
| title_full | A promising CO<sub>2</sub> methanation catalyst system based on modified halloysites as supports |
| title_fullStr | A promising CO<sub>2</sub> methanation catalyst system based on modified halloysites as supports |
| title_full_unstemmed | A promising CO<sub>2</sub> methanation catalyst system based on modified halloysites as supports |
| title_short | A promising CO<sub>2</sub> methanation catalyst system based on modified halloysites as supports |
| title_sort | A promising CO<sub>2</sub> methanation catalyst system based on modified halloysites as supports |
| topic | Engineering Chemical engineering Materials engineering Halloysite nanotubes Nanocatalysts Methanation CO2 utilization |