Fabrication and characterization of Ni-Ce-Zr ternary disk-shaped catalyst and its application for low-temperature CO2 methanation

FUEL

卷:260

Article

Moon, Dea Hyun¹  Chung, Woo Jin²  Chang, Soon Woong²  Lee, Sang Moon²  Kim, Sung Su²  Jeung, Jae Hoon¹  Ro, Yeon Hee¹  Ahn, Jeong Yoon¹  Guo, Wenshan³  Ngo, Huu Hao³  Dinh Duc Nguyen^2,4 

[1] Kyonggi Univ, Dept Environm Energy Engn, Grad Sch, Suwon, South Korea

[2] Kyonggi Univ, Dept Environm Energy Engn, Suwon, South Korea

[3] Univ Technol Sydney, Ctr Technol Water & Wastewater, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia

[4] Duy Tan Univ, Inst Res & Dev, Da Nang, Vietnam

关键词: Carbon dioxide;    Methanation catalyst;    Disk-shaped catalyst;    Nickel;    Cerium;    Zirconium;   

DOI  :  10.1016/j.fuel.2019.116260

来源: Elsevier

【 摘 要 】

This study optimized a Ni-Ce-Zr catalyst and its contents for a CO2 methanation reaction by selecting a disk shape with a high mechanical strength, good durability, and thermal emission resistance. The physical and chemical properties of the obtained catalysts were determined by X-ray diffraction, scanning electron microscopy, Brunauer-Emmett-Teller, hydrogen temperature-programmed reduction, and temperature-programmed desorption of CO2 analyses. In addition, the activity and stability of the obtained catalysts were then evaluated and compared. It was determined that the combined Ni-Ce-Zr catalyst positively affects the conversion of CO2 to CH4. Furthermore, a CO2 methanation experiment was performed under atmospheric pressure conditions at 200-350 degrees C. The CO2 conversion was 82% at 300 degrees C, and the CH4 selectivity was 100%. A durability test revealed a difference in the conversion of approximately 6% for 1000 h, which indicates that the catalytic performance was maintained for a significant period.

【 授权许可】

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