Utilizing the abundant biogas resources in an efficient and sustainable way helps to mitigate the energy and environmental problems. CH₄ oxy-CO₂ reforming reaction is a promising technic and an efficient catalyst for the reaction is in great demand. In this work, Ru was incorporated into monometallic Co/MgO-Al₂O₃ aerogel catalyst via supercritical drying process combined with sol–gel method and a series of Co-Ru bimetallic aerogel catalyst with different Ru contents was synthesized. Catalytic performance screening for the catalysts indicated that combination of Ru and Co significantly raised the activity of monometallic catalysts, e.g., the activity of Co15-Ru0.2 (Co content: 15 wt.%, Ru content: 0.2 wt.%) was 64.7% and 63.9% higher than those of the monometallic Co15 and Ru0.5 catalysts, respectively. The results also indicated that Co/Ru ratio had a great influence on the catalytic activity: Co15-Ru0.2 > Co15-Ru0.1 ≈ Co15-Ru0.5 > Co15-Ru0.05 > Ru0.5 > Co15. XRD, BET, H₂-TPR, XPS, TEM, TG/DSC, and FESEM analyses were performed, disclosing that the reducibility and active metal particle size of the catalysts can be manipulated by the Co/Ru ratio due to the transportation of bulk Co²⁺ to the surface. The Co15-Ru0.2 catalyst had a mean active metal particle size below 10 nm and medium reducibility, resulting in a high activity and stable performance.

以高效和可持续的方式利用丰富的沼气资源有助于缓解能源和环境问题。CH ₄ oxy-CO ₂重整反应是一项很有前途的技术，急需一种高效的反应催化剂。在这项工作中，Ru 被掺入单金属 Co/MgO-Al ₂ O ₃通过超临界干燥工艺结合溶胶-凝胶法合成了一系列不同Ru含量的Co-Ru双金属气凝胶催化剂。催化剂的催化性能筛选表明，Ru和Co的结合显着提高了单金属催化剂的活性，例如Co15-Ru0.2（Co含量：15wt.%，Ru含量：0.2wt.%）的活性为64.7 % 和 63.9% 分别比单金属 Co15 和 Ru0.5 催化剂高。结果还表明，Co/Ru 比对催化活性有很大影响：Co15-Ru0.2 > Co15-Ru0.1 ≈ Co15-Ru0.5 > Co15-Ru0.05 > Ru0.5 > Co15。XRD、BET、H ₂-TPR、XPS、TEM、TG/DSC 和 FESEM 分析表明，催化剂的还原性和活性金属颗粒尺寸可以通过 Co/Ru 比来控制，因为大量 Co ²⁺转移到表面. Co15-Ru0.2催化剂的平均活性金属粒径小于10 nm，还原性中等，活性高，性能稳定。