Role of Active Site and CO2‐Interacting Surface Species in Dry Reforming of Methane over Strontium Promoted Ni Catalyst Supported by Lanthanum‐Zirconia
Abstract In the context of global warming, the dry reforming of methane (DRM) has gained significant attention due to its ability to simultaneously deplete two greenhouse gases, i. e. CH4 and CO2, and generate syngas. Herein, strontium‐promoted Lanthanum‐zirconia supported Ni catalysts are investiga...
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Wiley-VCH
2025-01-01
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| Online Access: | https://doi.org/10.1002/open.202400151 |
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| author | Kenit Acharya Ahmed S. Al‐Fatesh Anis H. Fakeeha Ahmed E. Abasaeed Othman Alothman Hammad Ahmad Jan Naif Alarifi Jehad K. Abu‐Dahrieh Dr. Rawesh Kumar |
| author_facet | Kenit Acharya Ahmed S. Al‐Fatesh Anis H. Fakeeha Ahmed E. Abasaeed Othman Alothman Hammad Ahmad Jan Naif Alarifi Jehad K. Abu‐Dahrieh Dr. Rawesh Kumar |
| author_sort | Kenit Acharya |
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| description | Abstract In the context of global warming, the dry reforming of methane (DRM) has gained significant attention due to its ability to simultaneously deplete two greenhouse gases, i. e. CH4 and CO2, and generate syngas. Herein, strontium‐promoted Lanthanum‐zirconia supported Ni catalysts are investigated for DRM and characterized by X‐ray diffraction, surface area and porosity, FTIR‐RAMAN spectroscopy, and temperature‐programmed experiments. The Ni/LaZr catalyst contains formate and oxycarbonate‐like CO2‐interacting species, while strontium‐promoted catalysts have additional ionic CO32− species. The current catalyst system of 2 % strontium‐promoted Ni/LaZr has active sites derived from three types of NiO: easily reducible, moderately interacted, and strongly interacted. During the DRM reaction over the current system, CO2 is a better oxidant than O2 for removing carbon deposits. Additionally, the catalysts attain higher reducibility under oxidizing gas (CO2) and reducing gas (H2) during the DRM reaction. For optimal hydrogen yield of approximately 60 % within 420 minutes of operation over Ni2Sr/LaZr catalyst, a balance between the population of active site Ni and CO2‐interacting surface species is necessary. |
| format | Article |
| id | doaj-art-3a6e61819018436e9e6dafff60192fa2 |
| institution | Kabale University |
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| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-3a6e61819018436e9e6dafff60192fa22025-01-11T07:54:10ZengWiley-VCHChemistryOpen2191-13632025-01-01141n/an/a10.1002/open.202400151Role of Active Site and CO2‐Interacting Surface Species in Dry Reforming of Methane over Strontium Promoted Ni Catalyst Supported by Lanthanum‐ZirconiaKenit Acharya0Ahmed S. Al‐Fatesh1Anis H. Fakeeha2Ahmed E. Abasaeed3Othman Alothman4Hammad Ahmad Jan5Naif Alarifi6Jehad K. Abu‐Dahrieh7Dr. Rawesh Kumar8Department of Chemistry Indus University Ahmedabad Gujarat 382115 IndiaChemical Engineering Department College of Engineering King Saud University P.O. Box 800 Riyadh 11421 Kingdom of Saudi ArabiaChemical Engineering Department College of Engineering King Saud University P.O. Box 800 Riyadh 11421 Kingdom of Saudi ArabiaChemical Engineering Department College of Engineering King Saud University P.O. Box 800 Riyadh 11421 Kingdom of Saudi ArabiaChemical Engineering Department College of Engineering King Saud University P.O. Box 800 Riyadh 11421 Kingdom of Saudi ArabiaDepartment of Botany University of Buner Swari PakistanInstitute of Refining and Petrochemicals Technologies King Abdulaziz City for Science and Technology (KACST) P.O. Box 6086 Riyadh 11442 Kingdom of Saudi ArabiaSchool of Chemistry and Chemical Engineering Queen's University Belfast BT9 5AG UKDepartment of Chemistry Indus University Ahmedabad Gujarat 382115 IndiaAbstract In the context of global warming, the dry reforming of methane (DRM) has gained significant attention due to its ability to simultaneously deplete two greenhouse gases, i. e. CH4 and CO2, and generate syngas. Herein, strontium‐promoted Lanthanum‐zirconia supported Ni catalysts are investigated for DRM and characterized by X‐ray diffraction, surface area and porosity, FTIR‐RAMAN spectroscopy, and temperature‐programmed experiments. The Ni/LaZr catalyst contains formate and oxycarbonate‐like CO2‐interacting species, while strontium‐promoted catalysts have additional ionic CO32− species. The current catalyst system of 2 % strontium‐promoted Ni/LaZr has active sites derived from three types of NiO: easily reducible, moderately interacted, and strongly interacted. During the DRM reaction over the current system, CO2 is a better oxidant than O2 for removing carbon deposits. Additionally, the catalysts attain higher reducibility under oxidizing gas (CO2) and reducing gas (H2) during the DRM reaction. For optimal hydrogen yield of approximately 60 % within 420 minutes of operation over Ni2Sr/LaZr catalyst, a balance between the population of active site Ni and CO2‐interacting surface species is necessary.https://doi.org/10.1002/open.202400151Sr promoterDry reforming of methaneLathana-zirconiaActive site NiIonic CO32− species |
| spellingShingle | Kenit Acharya Ahmed S. Al‐Fatesh Anis H. Fakeeha Ahmed E. Abasaeed Othman Alothman Hammad Ahmad Jan Naif Alarifi Jehad K. Abu‐Dahrieh Dr. Rawesh Kumar Role of Active Site and CO2‐Interacting Surface Species in Dry Reforming of Methane over Strontium Promoted Ni Catalyst Supported by Lanthanum‐Zirconia ChemistryOpen Sr promoter Dry reforming of methane Lathana-zirconia Active site Ni Ionic CO32− species |
| title | Role of Active Site and CO2‐Interacting Surface Species in Dry Reforming of Methane over Strontium Promoted Ni Catalyst Supported by Lanthanum‐Zirconia |
| title_full | Role of Active Site and CO2‐Interacting Surface Species in Dry Reforming of Methane over Strontium Promoted Ni Catalyst Supported by Lanthanum‐Zirconia |
| title_fullStr | Role of Active Site and CO2‐Interacting Surface Species in Dry Reforming of Methane over Strontium Promoted Ni Catalyst Supported by Lanthanum‐Zirconia |
| title_full_unstemmed | Role of Active Site and CO2‐Interacting Surface Species in Dry Reforming of Methane over Strontium Promoted Ni Catalyst Supported by Lanthanum‐Zirconia |
| title_short | Role of Active Site and CO2‐Interacting Surface Species in Dry Reforming of Methane over Strontium Promoted Ni Catalyst Supported by Lanthanum‐Zirconia |
| title_sort | role of active site and co2 interacting surface species in dry reforming of methane over strontium promoted ni catalyst supported by lanthanum zirconia |
| topic | Sr promoter Dry reforming of methane Lathana-zirconia Active site Ni Ionic CO32− species |
| url | https://doi.org/10.1002/open.202400151 |
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