17:15 〜 19:15
[SGC37-P18] Functionalized Natural Materials as Catalysts for the Dry Reforming of Methane
キーワード：Vermiculite, Dry reforming of methane, CO2 utilisation
Vermiculite, a waste material from sulfur and lignite mines, presents a promising resource for catalytic applications. The dry reforming of methane (DRM) is a key process for converting methane (CH4) and carbon dioxide (CO2), two major greenhouse gases, into synthesis gas (H2 and CO), which serves as a valuable feedstock for industrial applications. However, catalyst deactivation due to sintering and carbon deposition remains a critical challenge. The development of cost-effective and stable catalysts is essential for the practical implementation of DRM.
This study investigates the catalytic performance of functionalized vermiculite and compares it with standard catalytic supports such as hydrotalcite and alumina (Al2O3). Vermiculite, a natural layered silicate, was modified through thermal treatment and metal impregnation to enhance its catalytic properties. Hydrotalcite and Al2O3, well-known for their catalytic activity and stability in DRM, were used as reference materials. The synthesized catalysts were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), temperature-programmed reduction (TPR), and surface area analysis to determine their structural and physicochemical properties.
Catalytic performance was evaluated in a fixed-bed reactor under varying reaction conditions, focusing on methane and carbon dioxide conversion, hydrogen-to-carbon monoxide ratio, and coke resistance. The results indicate that functionalized vermiculite exhibits promising activity and stability, with improved resistance to carbon deposition compared to conventional supports. The enhanced performance is attributed to strong metal-support interactions and favorable textural properties.
This research highlights the potential of vermiculite as a sustainable and cost-effective alternative for DRM catalysts. The comparative analysis with standard supports provides valuable insights into catalyst design strategies for optimizing performance and longevity in methane reforming applications. These findings contribute to the development of environmentally friendly catalytic materials, supporting greenhouse gas utilization and syngas production.
This study investigates the catalytic performance of functionalized vermiculite and compares it with standard catalytic supports such as hydrotalcite and alumina (Al2O3). Vermiculite, a natural layered silicate, was modified through thermal treatment and metal impregnation to enhance its catalytic properties. Hydrotalcite and Al2O3, well-known for their catalytic activity and stability in DRM, were used as reference materials. The synthesized catalysts were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), temperature-programmed reduction (TPR), and surface area analysis to determine their structural and physicochemical properties.
Catalytic performance was evaluated in a fixed-bed reactor under varying reaction conditions, focusing on methane and carbon dioxide conversion, hydrogen-to-carbon monoxide ratio, and coke resistance. The results indicate that functionalized vermiculite exhibits promising activity and stability, with improved resistance to carbon deposition compared to conventional supports. The enhanced performance is attributed to strong metal-support interactions and favorable textural properties.
This research highlights the potential of vermiculite as a sustainable and cost-effective alternative for DRM catalysts. The comparative analysis with standard supports provides valuable insights into catalyst design strategies for optimizing performance and longevity in methane reforming applications. These findings contribute to the development of environmentally friendly catalytic materials, supporting greenhouse gas utilization and syngas production.