Cost‐Effective Synthesis of Fe5C2 Catalyst From Nanosized Zero‐Valent Iron to Achieve Efficient Photothermocatalytic CO Hydrogenation to Light Olefins
Abstract Fe‐based catalysts are commonly applied in the process of Fischer−Tropsch synthesis (FTS) to olefins, with Hägg iron carbide (Fe5C2) recognized as the primary active phase. However, iron carbonyls, the raw materials for wet chemical synthesis of Fe5C2, are expensive and toxic, which limits...
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Wiley
2025-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202410215 |
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| author | Yuqing Xu Yuan Li Ruizhe Li Hua Xu Shuxin Ouyang Hong Yuan |
| author_facet | Yuqing Xu Yuan Li Ruizhe Li Hua Xu Shuxin Ouyang Hong Yuan |
| author_sort | Yuqing Xu |
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| description | Abstract Fe‐based catalysts are commonly applied in the process of Fischer−Tropsch synthesis (FTS) to olefins, with Hägg iron carbide (Fe5C2) recognized as the primary active phase. However, iron carbonyls, the raw materials for wet chemical synthesis of Fe5C2, are expensive and toxic, which limits large‐scale preparation. Here, a cost‐effective and versatile method is proposed for the synthesis of Fe5C2 nanoparticles (NPs) with nanosized zero‐valent iron (abbreviated as NZVI, prepared by reducing iron salts or ball‐milling iron powder) instead of iron carbonyls, achieving a cost reduction of 76.8%. Experimental characterizations revealed that NZVI obtained from the reduction of iron salts can catalyze the cracking of octadecylamine to form a carbonized atmosphere, thus realizing the phase transition of Fe into Fe5C2. The optimized Fe5C2 catalyst is employed in the photothermocatalytic FTS process, achieving a light olefins selectivity of 54.2% in hydrocarbons, with a CO conversion of 24.3%. Furthermore, it is proved that the particle size and surface oxide state of NZVI can impact the synthesis of Fe5C2. This study demonstrates a cost‐effective method for the large‐scale preparation of the Fe5C2 catalyst. |
| format | Article |
| id | doaj-art-d7931d9d42ed4fec82a7959b0ea7018a |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
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| series | Advanced Science |
| spelling | doaj-art-d7931d9d42ed4fec82a7959b0ea7018a2025-01-29T09:50:18ZengWileyAdvanced Science2198-38442025-01-01124n/an/a10.1002/advs.202410215Cost‐Effective Synthesis of Fe5C2 Catalyst From Nanosized Zero‐Valent Iron to Achieve Efficient Photothermocatalytic CO Hydrogenation to Light OlefinsYuqing Xu0Yuan Li1Ruizhe Li2Hua Xu3Shuxin Ouyang4Hong Yuan5Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 P. R. ChinaEngineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 P. R. ChinaEngineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 P. R. ChinaSchool of Chemistry and Environmental Engineering Wuhan Institute of Technology Wuhan 430205 P. R. ChinaEngineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 P. R. ChinaEngineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 P. R. ChinaAbstract Fe‐based catalysts are commonly applied in the process of Fischer−Tropsch synthesis (FTS) to olefins, with Hägg iron carbide (Fe5C2) recognized as the primary active phase. However, iron carbonyls, the raw materials for wet chemical synthesis of Fe5C2, are expensive and toxic, which limits large‐scale preparation. Here, a cost‐effective and versatile method is proposed for the synthesis of Fe5C2 nanoparticles (NPs) with nanosized zero‐valent iron (abbreviated as NZVI, prepared by reducing iron salts or ball‐milling iron powder) instead of iron carbonyls, achieving a cost reduction of 76.8%. Experimental characterizations revealed that NZVI obtained from the reduction of iron salts can catalyze the cracking of octadecylamine to form a carbonized atmosphere, thus realizing the phase transition of Fe into Fe5C2. The optimized Fe5C2 catalyst is employed in the photothermocatalytic FTS process, achieving a light olefins selectivity of 54.2% in hydrocarbons, with a CO conversion of 24.3%. Furthermore, it is proved that the particle size and surface oxide state of NZVI can impact the synthesis of Fe5C2. This study demonstrates a cost‐effective method for the large‐scale preparation of the Fe5C2 catalyst.https://doi.org/10.1002/advs.202410215CO HydrogenationFe5C2 CatalystsLight OlefinsNanosized Zero‐Valent IronPhotothermocatalysis |
| spellingShingle | Yuqing Xu Yuan Li Ruizhe Li Hua Xu Shuxin Ouyang Hong Yuan Cost‐Effective Synthesis of Fe5C2 Catalyst From Nanosized Zero‐Valent Iron to Achieve Efficient Photothermocatalytic CO Hydrogenation to Light Olefins Advanced Science CO Hydrogenation Fe5C2 Catalysts Light Olefins Nanosized Zero‐Valent Iron Photothermocatalysis |
| title | Cost‐Effective Synthesis of Fe5C2 Catalyst From Nanosized Zero‐Valent Iron to Achieve Efficient Photothermocatalytic CO Hydrogenation to Light Olefins |
| title_full | Cost‐Effective Synthesis of Fe5C2 Catalyst From Nanosized Zero‐Valent Iron to Achieve Efficient Photothermocatalytic CO Hydrogenation to Light Olefins |
| title_fullStr | Cost‐Effective Synthesis of Fe5C2 Catalyst From Nanosized Zero‐Valent Iron to Achieve Efficient Photothermocatalytic CO Hydrogenation to Light Olefins |
| title_full_unstemmed | Cost‐Effective Synthesis of Fe5C2 Catalyst From Nanosized Zero‐Valent Iron to Achieve Efficient Photothermocatalytic CO Hydrogenation to Light Olefins |
| title_short | Cost‐Effective Synthesis of Fe5C2 Catalyst From Nanosized Zero‐Valent Iron to Achieve Efficient Photothermocatalytic CO Hydrogenation to Light Olefins |
| title_sort | cost effective synthesis of fe5c2 catalyst from nanosized zero valent iron to achieve efficient photothermocatalytic co hydrogenation to light olefins |
| topic | CO Hydrogenation Fe5C2 Catalysts Light Olefins Nanosized Zero‐Valent Iron Photothermocatalysis |
| url | https://doi.org/10.1002/advs.202410215 |
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