Influence of Support Materials on Fe-Co Bimetallic Catalysts for Efficient CO₂ Hydrogenation to Light Olefins
Faculty Mentor
Cheng Zheng
Area of Research
Biology
Major
Chemistry
Description
Rising atmospheric levels of greenhouse gases, particularly carbon dioxide (CO₂), are major contributors to climate change and global warming, presenting significant global challenges. Recent advancements in heterogeneous catalyst design and CO₂ utilization strategies have gained momentum in addressing these issues. This study builds upon previous research on Fe-Co bimetallic catalysts for CO₂ hydrogenation, where a Fe/Co molar ratio of 1:1 demonstrated superior activity and selectivity for light olefin production. Expanding on these findings, this work investigates the influence of support materials on catalytic efficiency. Various supports, including CeO₂, Al₂O₃, SiO₂, TiO₂, ZrO₂, and ZSM-5, were incorporated into the Fe/Co = 1:1 solution mixture, and the supported Fe-Co catalysts were synthesized via the solvent evaporation method. The catalysts underwent mild thermal treatment to yield magnetic-supported bimetallic materials, followed by compression into uniform particle sizes and loading into quartz tubes for evaluation. Catalytic performance was assessed in a flow-bed reactor under controlled temperatures and CO₂/H₂ flow rates, with product analysis conducted via online gas chromatography (GC). Further characterization, including temperature-programmed reduction (TPR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA), was performed to elucidate the relationships between catalyst properties, support effects, and activity. These novel magnetic bimetallic catalysts, with enhanced support interactions, provide valuable insights into the roles of Fe₃O₄ and Co₃O₄ in the reaction pathway for CO₂ hydrogenation to light olefins.
Influence of Support Materials on Fe-Co Bimetallic Catalysts for Efficient CO₂ Hydrogenation to Light Olefins
Rising atmospheric levels of greenhouse gases, particularly carbon dioxide (CO₂), are major contributors to climate change and global warming, presenting significant global challenges. Recent advancements in heterogeneous catalyst design and CO₂ utilization strategies have gained momentum in addressing these issues. This study builds upon previous research on Fe-Co bimetallic catalysts for CO₂ hydrogenation, where a Fe/Co molar ratio of 1:1 demonstrated superior activity and selectivity for light olefin production. Expanding on these findings, this work investigates the influence of support materials on catalytic efficiency. Various supports, including CeO₂, Al₂O₃, SiO₂, TiO₂, ZrO₂, and ZSM-5, were incorporated into the Fe/Co = 1:1 solution mixture, and the supported Fe-Co catalysts were synthesized via the solvent evaporation method. The catalysts underwent mild thermal treatment to yield magnetic-supported bimetallic materials, followed by compression into uniform particle sizes and loading into quartz tubes for evaluation. Catalytic performance was assessed in a flow-bed reactor under controlled temperatures and CO₂/H₂ flow rates, with product analysis conducted via online gas chromatography (GC). Further characterization, including temperature-programmed reduction (TPR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA), was performed to elucidate the relationships between catalyst properties, support effects, and activity. These novel magnetic bimetallic catalysts, with enhanced support interactions, provide valuable insights into the roles of Fe₃O₄ and Co₃O₄ in the reaction pathway for CO₂ hydrogenation to light olefins.