Jorge Reyna-Alvarado, Oscar A. López-Galán, Jorge Trimmer, Oscar Recalde-Benitez, Leopoldo Molina, Albina Gutiérrez-Martínez, Raúl Pérez-Hernández, Manuel Ramos
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引用次数: 0
摘要
本研究介绍了 CeO2 纳米棒 (NR) 上钴载体催化剂的合成和表征，以研究其高效制氢的催化性能。透射电子显微镜、能量色散 X 射线光谱和 X 射线衍射对催化剂进行了表征。温度编程还原测量显示，Co/CeO2-NR 活性相在 500°C 以下发生还原。在 CeO2-NR 中添加 Co 可增强原始 CeO2-NR 的碱性，并大大提高 CO2 和 CH4 的转化率，分别达到 70% 和 55%。此外，利用 Halgren-Lipscomb 进行的密度泛函理论计算表明，Co 向 CeO2-NR 的电子捐赠促进了 C-H 键的可行断裂。
Enhanced syngas (H2/CO) production by Co/CeO2 nanorods catalyst through dry reforming of methane
This study presents the synthesis and characterization of the Co supported on CeO2 nanorods (NR) catalyst to investigate catalytic performance towards efficient hydrogen production. The catalyst was characterized by transmission electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction. Temperature-programmed reduction measurements showed that the Co/CeO2-NR active phase was reduced below 500°C. Adding Co to CeO2-NR enhances the basicity of the raw CeO2-NR and greatly improves the conversion to 70% for CO2 and 55% for CH4. In addition, density functional theory calculations using Halgren–Lipscomb indicate electron donation from Co to CeO2-NR promotes feasible breaking of C–H bonds.
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