Zeolites 13X and 5A were modified with nickel and/or ruthenium for CO₂ methanation. The catalysts were prepared by evaporation impregnation and XRD, SEM-EDX, TEM, STEM-EDX, nitrogen physisorption, H₂-TPR and NH₃-TPD were used to characterize the physico-chemical properties of the catalysts. The physico-chemical characterization results show that the zeolites structure did not change after the Ni, Ru modification, however. Ni was able to enter the pores of 13X, in the other case, 5A, an egg shell type structure was formed. Methanation experiments were performed in a lab scale fixed bed reactor system, the results showed that the mono-metallic catalysts out-performed the bi-metallic ones with Ni being the more active. One of the factors influencing the performance of the bi-metallic catalysts was the difficulty to obtain good dispersion when both metals were used. Also the morphology of the catalyst significantly influenced the selectivity. The catalysts with lower weak acidity benefit for getting a higher activity. The single metal catalysts 2.5 %Ru13X and 5%Ni13X showed good catalytic stability with around 97 % CH₄ selectivity at 360 °C, with no catalyst deactivation during the 200 h catalyst stability test.

用镍和/或钌将13X和5A沸石改性，以进行CO ₂甲烷化。通过蒸发浸渍和XRD，SEM-EDX，TEM，STEM-EDX，氮物理吸附，H ₂ -TPR和NH ₃制备催化剂。-TPD用于表征催化剂的物理化学性质。理化性质表明，Ni，Ru改性后，沸石的结构没有改变。Ni能够进入13X的孔，在另一情况下为5A，形成了蛋壳型结构。在实验室规模的固定床反应器系统中进行甲烷化实验，结果表明，单金属催化剂的性能优于双金属催化剂，其中镍的活性更高。影响双金属催化剂性能的因素之一是当使用两种金属时难以获得良好的分散性。催化剂的形态也显着影响选择性。弱酸性较低的催化剂有利于获得较高的活性。单一金属催化剂2。在360°C下具有_4的选择性，在200小时的催化剂稳定性测试过程中没有催化剂失活。