Ru-promoted Ni–Co catalysts supported on MgO–Al₂O₃ are tested for dry reforming activity in a fixed-bed reactor at atmospheric pressure. The effect of temperature and contact time is investigated, and the catalysts maintain high stability for up to 47 h on stream. The support surface area significantly affects dispersion, and whisker carbon is observed in spent samples with pore sizes higher than 15 nm. H₂-TPR studies reveal the presence of spinels that are not completely reducible, yet the catalysts give remarkable activity. Four synthesis methods are tested for the support, with the sol-gel method in neutral conditions providing the best performance, with a small compromise on activity but a significant improvement in catalyst stability and no whisker carbon formation. Further work will optimize the Ni/Co ratio in the active phase to decrease the carbon buildup on the catalysts.

在大气压下，在固定床反应器中测试了负载在MgO-Al ₂ O ₃上的Ru促进的Ni-Co催化剂的干重整活性。研究了温度和接触时间的影响，催化剂在运行过程中可保持最高47小时的高稳定性。载体表面积显着影响分散性，并且在孔径大于15 nm的废样品中观察到晶须碳。高₂-TPR研究表明存在不能完全还原的尖晶石，但催化剂具有出色的活性。测试了四种合成方法的载体，其中溶胶-凝胶法在中性条件下可提供最佳性能，对活性的影响很小，但催化剂稳定性有了显着改善，并且没有晶须碳的形成。进一步的工作将优化活性相中的Ni / Co比，以减少催化剂上积碳。