Steam reforming of ethanol process was evaluated over unpromoted / yttria and zirconia-promoted mesoporous carbon-Ni-Co catalysts. The nickel and cobalt ions were added during the synthesis of mesoporous carbon support and then yttrium and zirconium promoters loaded by the wet impregnation method. The catalysts were characterized by BET, XRD, HR-TEM, TPR, TG-DTA, and FE-SEM methods. XRD and HR-TEM results indicated that the yttria-promoted MC-Ni-Co catalyst has a smaller particle size (the higher dispersion) compared to zirconia-promoted MC-Ni-Co catalyst. Furthermore, TPR analysis confirmed an easier reduction of oxide nanoparticles in the yttria-promoted catalyst compared to the zirconia-promoted catalyst. By adding promoters, the activity of catalysts increased significantly. The catalytic activity of yttria-promoted catalyst (ethanol conversion ̴ 56% at 375 °C) was higher than zirconia-promoted catalyst (ethanol conversion ̴ 46% at 375 °C). Also, it was revealed that increasing the feed ratio could improve catalytic activity. FE-SEM and HR-TEM images indicated the deposited carbon with the filamentous nature on the surface of spent catalysts. The TG analysis showed the highest and lowest amount of carbon deposition for the unpromoted and zirconia-promoted catalysts after the stability test, respectively.

在未助催化剂/氧化钇和氧化锆助催化剂的介孔碳-Ni-Co催化剂上评估了乙醇工艺的蒸汽重整。在介孔碳载体的合成过程中添加镍和钴离子，然后通过湿法浸渍法负载钇和锆促进剂。通过BET，XRD，HR-TEM，TPR，TG-DTA和FE-SEM方法对催化剂进行了表征。XRD和HR-TEM结果表明，与氧化锆促进的MC-Ni-Co催化剂相比，氧化钇促进的MC-Ni-Co催化剂具有较小的粒径（较高的分散度）。此外，TPR分析证实与氧化锆促进的催化剂相比，氧化钇促进的催化剂中氧化物纳米颗粒的还原更容易。通过添加促进剂，催化剂的活性显着提高。氧化钇促进的催化剂（在375°C时乙醇转化率̴56％）的催化活性高于氧化锆促进的催化剂（在375°C时乙醇转化率̴46％）。另外，发现增加进料比可以改善催化活性。FE-SEM和HR-TEM图像表明沉积的碳在废催化剂的表面具有丝状性质。TG分析表明，在稳定性试验后，未助催化剂和氧化锆助催化剂的碳沉积量分别最高和最低。