Maximizing H<sub>2</sub> Production from a Combination of Catalytic Partial Oxidation of CH<sub>4</sub> and Water Gas Shift Reaction
A single-bed and dual-bed catalyst system was studied to maximize H<sub>2</sub> production from the combination of partial oxidation of CH<sub>4</sub> and water gas shift reaction. In addition, the different types of catalysts, including Ni, Cu, Ni-Re, and Cu-Re supported on...
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2025-01-01
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| author | Pannipa Tepamatr Pattarapon Rungsri Pornlada Daorattanachai Navadol Laosiripojana |
| author_facet | Pannipa Tepamatr Pattarapon Rungsri Pornlada Daorattanachai Navadol Laosiripojana |
| author_sort | Pannipa Tepamatr |
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| description | A single-bed and dual-bed catalyst system was studied to maximize H<sub>2</sub> production from the combination of partial oxidation of CH<sub>4</sub> and water gas shift reaction. In addition, the different types of catalysts, including Ni, Cu, Ni-Re, and Cu-Re supported on gadolinium-doped ceria (GDC) were investigated under different operating conditions of temperature (400–650 °C). Over Ni-based catalysts, methane can easily dissociate on a Ni surface to give hydrogen and carbon species. Then, carbon species react with lattice oxygen of ceria-based material to form CO. The addition of Re to Ni/GDC enhances CH<sub>4</sub> dissociation on the Ni surface and increases oxygen storage capacity in the catalyst, thus promoting carbon elimination. In addition, the results showed that a dual-bed catalyst system exhibited catalytic activity better than a single-bed catalyst system. The dual-bed catalyst system, by the combination of 1%Re4%Ni/GDC as a partial oxidation catalyst and 1%Re4%Cu/GDC as a water gas shift catalyst, provided the highest CH<sub>4</sub> conversion and H<sub>2</sub> yield. An addition of Re onto Ni/GDC and Cu/GDC caused an increase in catalytic performance because Re addition could improve the catalyst reducibility and increase metal surface area, as more of their surface active sites are exposed to reactants. |
| format | Article |
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| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-01-01 |
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| series | Molecules |
| spelling | doaj-art-e36fc4422ad445a4ae8e6b9a50ecb9d12025-01-24T13:43:21ZengMDPI AGMolecules1420-30492025-01-0130227110.3390/molecules30020271Maximizing H<sub>2</sub> Production from a Combination of Catalytic Partial Oxidation of CH<sub>4</sub> and Water Gas Shift ReactionPannipa Tepamatr0Pattarapon Rungsri1Pornlada Daorattanachai2Navadol Laosiripojana3Department of Chemistry, Faculty of Science and Technology, Thammasat University, Pathumthani 12120, ThailandThe Joint Graduate School of Energy and Environment, CHE Center for Energy Technology and Environment, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140, ThailandThe Joint Graduate School of Energy and Environment, CHE Center for Energy Technology and Environment, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140, ThailandThe Joint Graduate School of Energy and Environment, CHE Center for Energy Technology and Environment, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140, ThailandA single-bed and dual-bed catalyst system was studied to maximize H<sub>2</sub> production from the combination of partial oxidation of CH<sub>4</sub> and water gas shift reaction. In addition, the different types of catalysts, including Ni, Cu, Ni-Re, and Cu-Re supported on gadolinium-doped ceria (GDC) were investigated under different operating conditions of temperature (400–650 °C). Over Ni-based catalysts, methane can easily dissociate on a Ni surface to give hydrogen and carbon species. Then, carbon species react with lattice oxygen of ceria-based material to form CO. The addition of Re to Ni/GDC enhances CH<sub>4</sub> dissociation on the Ni surface and increases oxygen storage capacity in the catalyst, thus promoting carbon elimination. In addition, the results showed that a dual-bed catalyst system exhibited catalytic activity better than a single-bed catalyst system. The dual-bed catalyst system, by the combination of 1%Re4%Ni/GDC as a partial oxidation catalyst and 1%Re4%Cu/GDC as a water gas shift catalyst, provided the highest CH<sub>4</sub> conversion and H<sub>2</sub> yield. An addition of Re onto Ni/GDC and Cu/GDC caused an increase in catalytic performance because Re addition could improve the catalyst reducibility and increase metal surface area, as more of their surface active sites are exposed to reactants.https://www.mdpi.com/1420-3049/30/2/271partial oxidation of methanewater gas shiftGddual-bed catalyst |
| spellingShingle | Pannipa Tepamatr Pattarapon Rungsri Pornlada Daorattanachai Navadol Laosiripojana Maximizing H<sub>2</sub> Production from a Combination of Catalytic Partial Oxidation of CH<sub>4</sub> and Water Gas Shift Reaction Molecules partial oxidation of methane water gas shift Gd dual-bed catalyst |
| title | Maximizing H<sub>2</sub> Production from a Combination of Catalytic Partial Oxidation of CH<sub>4</sub> and Water Gas Shift Reaction |
| title_full | Maximizing H<sub>2</sub> Production from a Combination of Catalytic Partial Oxidation of CH<sub>4</sub> and Water Gas Shift Reaction |
| title_fullStr | Maximizing H<sub>2</sub> Production from a Combination of Catalytic Partial Oxidation of CH<sub>4</sub> and Water Gas Shift Reaction |
| title_full_unstemmed | Maximizing H<sub>2</sub> Production from a Combination of Catalytic Partial Oxidation of CH<sub>4</sub> and Water Gas Shift Reaction |
| title_short | Maximizing H<sub>2</sub> Production from a Combination of Catalytic Partial Oxidation of CH<sub>4</sub> and Water Gas Shift Reaction |
| title_sort | maximizing h sub 2 sub production from a combination of catalytic partial oxidation of ch sub 4 sub and water gas shift reaction |
| topic | partial oxidation of methane water gas shift Gd dual-bed catalyst |
| url | https://www.mdpi.com/1420-3049/30/2/271 |
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