نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
The chemical looping methane reforming process has attracted considerable attention as an efficient approach for hydrogen and syngas production due to improved energy efficiency and better control over reaction pathways. In this study, two cerium-based perovskite oxygen carriers, CeNiO3 and CeCuO3, were synthesized via the co-precipitation method and evaluated for application in this process. The structural, morphological, and redox properties of these materials were investigated using XRD, FESEM, TGA, and H2-TPR analyses, and their reactor performance was examined in a quartz fixed-bed reactor under successive oxidation–reduction cycles. The results indicated that CeNiO3 exhibits higher thermal stability, easier reducibility, and more effective reversible lattice oxygen transfer, whereas CeCuO3 showed greater thermal instability and more limited reducibility. At 750 °C, methane conversion was approximately 90% for CeNiO3 and about 30% for CeCuO3. Furthermore, CeNiO3 demonstrated suitable cyclic stability, while the performance of CeCuO3 was unstable.
کلیدواژهها English
