Effect of Preparation Conditions of Fe@SiO<sub>2</sub> Catalyst on Its Structure Using High-Pressure Activity Studies in a 3D-Printed SS Microreactor
Fischer–Tropsch synthesis (FTS) in a 3D-printed stainless steel (SS) microchannel microreactor was investigated using Fe@SiO<sub>2</sub> catalysts. The catalysts were prepared by two different techniques: one pot (OP) and autoclave (AC). The mesoporous structure of the two catalysts, Fe@...
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2025-01-01
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| author | Meric Arslan Sujoy Bepari Juvairia Shajahan Saif Hassan Debasish Kuila |
| author_facet | Meric Arslan Sujoy Bepari Juvairia Shajahan Saif Hassan Debasish Kuila |
| author_sort | Meric Arslan |
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| description | Fischer–Tropsch synthesis (FTS) in a 3D-printed stainless steel (SS) microchannel microreactor was investigated using Fe@SiO<sub>2</sub> catalysts. The catalysts were prepared by two different techniques: one pot (OP) and autoclave (AC). The mesoporous structure of the two catalysts, Fe@SiO<sub>2</sub> (OP) and Fe@SiO<sub>2</sub> (AC), ensured a large contact area between the reactants and the catalyst. They were characterized by N<sub>2</sub> physisorption, H<sub>2</sub> temperature-programmed reduction (H<sub>2</sub>-TPR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron microscopy (XPS), and thermogravimetric analysis–differential scanning calorimetry (TGA-DSC) techniques. The AC catalyst had a clear core–shell structure and showed a much greater surface area than that prepared by the OP method. The activities of the catalysts in terms of FTS were studied in the 200–350 °C temperature range at 20-bar pressure with a H<sub>2</sub>/CO molar ratio of 2:1. The Fe@SiO<sub>2</sub> (AC) catalyst showed higher selectivity and higher CO conversion to olefins than Fe@SiO<sub>2</sub> (OP). Stability studies of both catalysts were carried out for 30 h at 320 °C at 20 bar with a feed gas molar ratio of 2:1. The Fe@SiO<sub>2</sub> (AC) catalyst showed higher stability and yielded consistent CO conversion compared to the Fe@SiO<sub>2</sub> (OP) catalyst. |
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| spelling | doaj-art-8b457714e1c44b3285cdef4050e5205e2025-01-24T13:43:23ZengMDPI AGMolecules1420-30492025-01-0130228010.3390/molecules30020280Effect of Preparation Conditions of Fe@SiO<sub>2</sub> Catalyst on Its Structure Using High-Pressure Activity Studies in a 3D-Printed SS MicroreactorMeric Arslan0Sujoy Bepari1Juvairia Shajahan2Saif Hassan3Debasish Kuila4Department of Applied Science and Technology, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USADepartment of Chemistry, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USAJoint School of Nanoscience and Nanoengineering, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USADepartment of Chemistry, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USADepartment of Applied Science and Technology, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USAFischer–Tropsch synthesis (FTS) in a 3D-printed stainless steel (SS) microchannel microreactor was investigated using Fe@SiO<sub>2</sub> catalysts. The catalysts were prepared by two different techniques: one pot (OP) and autoclave (AC). The mesoporous structure of the two catalysts, Fe@SiO<sub>2</sub> (OP) and Fe@SiO<sub>2</sub> (AC), ensured a large contact area between the reactants and the catalyst. They were characterized by N<sub>2</sub> physisorption, H<sub>2</sub> temperature-programmed reduction (H<sub>2</sub>-TPR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron microscopy (XPS), and thermogravimetric analysis–differential scanning calorimetry (TGA-DSC) techniques. The AC catalyst had a clear core–shell structure and showed a much greater surface area than that prepared by the OP method. The activities of the catalysts in terms of FTS were studied in the 200–350 °C temperature range at 20-bar pressure with a H<sub>2</sub>/CO molar ratio of 2:1. The Fe@SiO<sub>2</sub> (AC) catalyst showed higher selectivity and higher CO conversion to olefins than Fe@SiO<sub>2</sub> (OP). Stability studies of both catalysts were carried out for 30 h at 320 °C at 20 bar with a feed gas molar ratio of 2:1. The Fe@SiO<sub>2</sub> (AC) catalyst showed higher stability and yielded consistent CO conversion compared to the Fe@SiO<sub>2</sub> (OP) catalyst.https://www.mdpi.com/1420-3049/30/2/280FTSSS microreactorcore–shell Fe catalystmesoporous composite oxide |
| spellingShingle | Meric Arslan Sujoy Bepari Juvairia Shajahan Saif Hassan Debasish Kuila Effect of Preparation Conditions of Fe@SiO<sub>2</sub> Catalyst on Its Structure Using High-Pressure Activity Studies in a 3D-Printed SS Microreactor Molecules FTS SS microreactor core–shell Fe catalyst mesoporous composite oxide |
| title | Effect of Preparation Conditions of Fe@SiO<sub>2</sub> Catalyst on Its Structure Using High-Pressure Activity Studies in a 3D-Printed SS Microreactor |
| title_full | Effect of Preparation Conditions of Fe@SiO<sub>2</sub> Catalyst on Its Structure Using High-Pressure Activity Studies in a 3D-Printed SS Microreactor |
| title_fullStr | Effect of Preparation Conditions of Fe@SiO<sub>2</sub> Catalyst on Its Structure Using High-Pressure Activity Studies in a 3D-Printed SS Microreactor |
| title_full_unstemmed | Effect of Preparation Conditions of Fe@SiO<sub>2</sub> Catalyst on Its Structure Using High-Pressure Activity Studies in a 3D-Printed SS Microreactor |
| title_short | Effect of Preparation Conditions of Fe@SiO<sub>2</sub> Catalyst on Its Structure Using High-Pressure Activity Studies in a 3D-Printed SS Microreactor |
| title_sort | effect of preparation conditions of fe sio sub 2 sub catalyst on its structure using high pressure activity studies in a 3d printed ss microreactor |
| topic | FTS SS microreactor core–shell Fe catalyst mesoporous composite oxide |
| url | https://www.mdpi.com/1420-3049/30/2/280 |
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