Promoted (ceria, lanthana, and yttria)-Ni/CaO-Al₂O₃ catalysts were prepared and after characterizing by XRD, BET, TPR, TEM, TPO, and FE-SEM tests, evaluated in CO₂/methane reforming (CRM) process. The observations revealed that the catalyst redox properties, crystallite size, and dispersion are important factors in catalytic performance. Among promoted Ni catalysts, the ceria-promoted catalyst with the smallest crystallite size (8.9 nm), the largest specific surface area and total pore volume showed the highest catalyst activity (~81%). Moreover, the TPO and FE-SEM of used catalysts demonstrated the lower CNT deposited on the ceria-promoted catalyst surface that leads to a delay in catalyst deactivation.

制备了增强型（二氧化铈，镧系和氧化钇）-Ni / CaO-Al ₂ O ₃催化剂，并通过XRD，BET，TPR，TEM，TPO和FE-SEM测试表征后，在CO ₂ /甲烷重整（CRM）中进行了评估。）过程。观察结果表明，催化剂的氧化还原性能，微晶尺寸和分散度是催化性能的重要因素。在助催化的Ni催化剂中，具有最小晶粒尺寸（8.9 nm），最大比表面积和总孔体积的二氧化铈助催化剂显示出最高的催化剂活性（〜81％）。此外，使用过的催化剂的TPO和FE-SEM显示出较低的CNT沉积在二氧化铈促进的催化剂表面上，这导致了催化剂失活的延迟。