Comparative study on transition metal promoted Pt/SiO2 for oxidative dehydrogenation of propane with carbon dioxide
Transition metal is quantitatively investigated as a promoter of Pt-supported catalysts for the oxidative dehydrogenation of propane with CO2 (CO2-ODP). However, the criteria for selecting the transition metal are largely from trial and error. In this work, Pt/SiO2 catalysts promoted with 3d transit...
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Elsevier
2025-07-01
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| Series: | Journal of CO2 Utilization |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212982025001003 |
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| author | Heng-Bo Zhang Guo-Qing Yang Jiageng Li Zhong-Wen Liu |
| author_facet | Heng-Bo Zhang Guo-Qing Yang Jiageng Li Zhong-Wen Liu |
| author_sort | Heng-Bo Zhang |
| collection | DOAJ |
| description | Transition metal is quantitatively investigated as a promoter of Pt-supported catalysts for the oxidative dehydrogenation of propane with CO2 (CO2-ODP). However, the criteria for selecting the transition metal are largely from trial and error. In this work, Pt/SiO2 catalysts promoted with 3d transition metals (TMs) of Mn, Fe, Co or Ni (PtTM/SiO2) are comparatively studied for CO2-ODP. We found that the C3H6 selectivity and conversions of propane and CO2 are clearly improved when TMs are introduced into Pt/SiO2. Moreover, the apparent activation energy for the C3H6 formation during CO2-ODP is decreased in the order of PtNi/SiO2 > PtCo/SiO2 > PtFe/SiO2 > PtMn/SiO2. Among the investigated catalysts, PtMn/SiO2 is the most active and selective catalyst for the activation of C-H bonds in propane to produce C3H6 while PtNi/SiO2 is the most favorable catalyst for the formation of by-products via the dry reforming of propane with CO2 and propane cracking. Essentially, the catalytic results are well explained as the increased electron density of Pt over the PtTM/SiO2 catalysts via the enhanced electron transfer from TM having a smaller electronegativity. This understanding is important for the rational design of a high-performance Pt-based bimetallic catalyst for CO2-ODP. |
| format | Article |
| id | doaj-art-64077ebdd12e4c96bcdd31f49f7e7828 |
| institution | Kabale University |
| issn | 2212-9839 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
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| series | Journal of CO2 Utilization |
| spelling | doaj-art-64077ebdd12e4c96bcdd31f49f7e78282025-08-20T03:26:38ZengElsevierJournal of CO2 Utilization2212-98392025-07-019710311610.1016/j.jcou.2025.103116Comparative study on transition metal promoted Pt/SiO2 for oxidative dehydrogenation of propane with carbon dioxideHeng-Bo Zhang0Guo-Qing Yang1Jiageng Li2Zhong-Wen Liu3Key Laboratory of Syngas Conversion of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710119, ChinaKey Laboratory of Syngas Conversion of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710119, ChinaKey Laboratory of Syngas Conversion of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710119, ChinaCorrespondence to: School of Chemistry & Chemical Engineering, Shaanxi Normal University, No. 620, West Chang’an Avenue, Xi’an 710119, China.; Key Laboratory of Syngas Conversion of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710119, ChinaTransition metal is quantitatively investigated as a promoter of Pt-supported catalysts for the oxidative dehydrogenation of propane with CO2 (CO2-ODP). However, the criteria for selecting the transition metal are largely from trial and error. In this work, Pt/SiO2 catalysts promoted with 3d transition metals (TMs) of Mn, Fe, Co or Ni (PtTM/SiO2) are comparatively studied for CO2-ODP. We found that the C3H6 selectivity and conversions of propane and CO2 are clearly improved when TMs are introduced into Pt/SiO2. Moreover, the apparent activation energy for the C3H6 formation during CO2-ODP is decreased in the order of PtNi/SiO2 > PtCo/SiO2 > PtFe/SiO2 > PtMn/SiO2. Among the investigated catalysts, PtMn/SiO2 is the most active and selective catalyst for the activation of C-H bonds in propane to produce C3H6 while PtNi/SiO2 is the most favorable catalyst for the formation of by-products via the dry reforming of propane with CO2 and propane cracking. Essentially, the catalytic results are well explained as the increased electron density of Pt over the PtTM/SiO2 catalysts via the enhanced electron transfer from TM having a smaller electronegativity. This understanding is important for the rational design of a high-performance Pt-based bimetallic catalyst for CO2-ODP.http://www.sciencedirect.com/science/article/pii/S2212982025001003Propane dehydrogenationCarbon dioxidePlatinumTransition metalElectronegativity |
| spellingShingle | Heng-Bo Zhang Guo-Qing Yang Jiageng Li Zhong-Wen Liu Comparative study on transition metal promoted Pt/SiO2 for oxidative dehydrogenation of propane with carbon dioxide Journal of CO2 Utilization Propane dehydrogenation Carbon dioxide Platinum Transition metal Electronegativity |
| title | Comparative study on transition metal promoted Pt/SiO2 for oxidative dehydrogenation of propane with carbon dioxide |
| title_full | Comparative study on transition metal promoted Pt/SiO2 for oxidative dehydrogenation of propane with carbon dioxide |
| title_fullStr | Comparative study on transition metal promoted Pt/SiO2 for oxidative dehydrogenation of propane with carbon dioxide |
| title_full_unstemmed | Comparative study on transition metal promoted Pt/SiO2 for oxidative dehydrogenation of propane with carbon dioxide |
| title_short | Comparative study on transition metal promoted Pt/SiO2 for oxidative dehydrogenation of propane with carbon dioxide |
| title_sort | comparative study on transition metal promoted pt sio2 for oxidative dehydrogenation of propane with carbon dioxide |
| topic | Propane dehydrogenation Carbon dioxide Platinum Transition metal Electronegativity |
| url | http://www.sciencedirect.com/science/article/pii/S2212982025001003 |
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