Ni/Ce/SBA-15-P catalyst prepared by the dielectric barrier discharge plasma method (DBD) was investigated for carbon oxides methanation in the fixed-bed reaction. The characterization results of N₂ adsorption-desorption, XRD and TEM indicated that Ni/Ce/SBA-15-P catalyst was ordered mesoporous structure. XRD and TEM revealed that Ni/Ce/SBA-15-P catalyst had the minimum nickel particle size among the tested catalysts. The catalytic methanation activity of Ni/Ce/SBA-15-P assisted by DBD was better than that of Ni/SBA-15-C and Ni/Ce/SBA-15-C by the calcination method. After 30-h CO methanation at 650 °C, CH₄ yield of Ni/Ce/SBA-15-P decreased from 84.9% to 73.1% while CH₄ yield of Ni/Ce/SBA-15-C decreased from 63.2% to 37.3% at 400 °C, suggesting that the Ni/Ce/SBA-15-P catalyst has good high-temperature stability. As indicated by TG results, the amount of carbon deposition on the spent Ni/Ce/SBA-15-P catalyst was lower than that on the spent Ni/Ce/SBA-15-C catalyst. For Ni/Ce/SBA-15-P, the excellent performance and the good anti-coke forming ability are associated with the small Ni particle size.

研究了通过介电势垒放电等离子体法（DBD）制备的Ni / Ce / SBA-15-P催化剂在固定床反应中甲烷氧化甲烷化的过程。N ₂吸附-脱附，XRD和TEM的表征结果表明，Ni / Ce / SBA-15-P催化剂是有序的介孔结构。XRD和TEM表明，在所测试的催化剂中，Ni / Ce / SBA-15-P催化剂具有最小的镍粒度。用煅烧法，DBD辅助的Ni / Ce / SBA-15-P的催化甲烷化活性优于Ni / SBA-15-C和Ni / Ce / SBA-15-C。在650°C下进行30小时的CO甲烷化后，Ni / Ce / SBA-15-P的CH ₄产率从84.9％降低至73.1％，而CH ₄Ni / Ce / SBA-15-P的收率在400°C时从63.2％降至37.3％，表明Ni / Ce / SBA-15-P催化剂具有良好的高温稳定性。如TG结果所示，在废Ni / Ce / SBA-15-P催化剂上的碳沉积量低于在废Ni / Ce / SBA-15-C催化剂上的碳沉积量。对于Ni / Ce / SBA-15-P，优异的性能和良好的抗积炭能力与较小的Ni粒径有关。