The ceria-zirconia solid solution is an excellent support of nickel catalysts for CO₂ reforming of methane. In this work, we further improve the activity of the ceria-zirconia solid solution supported Ni catalyst via decomposition of nickel precursor by dielectric barrier discharge (DBD) plasma at ca.150 °C, followed by hydrogen reduction at 500 °C in the absence of DBD plasma. Compared to the catalyst prepared by the conventional thermal decomposition, the plasma decomposed catalyst possesses smaller Ni nanoparticles with mainly exposed Ni(111) lattice fringe. The plasma decomposed catalyst shows higher reducibility, which helps to form more active Ni⁰ species after hydrogen reduction. It also exhibits more basic sites and oxygen vacancies, promoting the activation of CO₂. Additionally, the plasma decomposed catalyst tends to form highly reactive carbon, from methane decomposition, the initial reaction of CO₂ reforming, towards the reaction with carbon dioxide. This leads to an enhanced coke resistance for CO₂ reforming.

氧化铈-氧化锆固溶体是用于甲烷CO ₂重整的镍催化剂的优良载体。在这项工作中，我们通过介质阻挡放电 (DBD) 等离子体在约 150 °C 下分解镍前驱体，然后在不存在的情况下在 500 °C 下氢还原，进一步提高了氧化铈-氧化锆固溶体负载的 Ni 催化剂的活性DBD 血浆。与通过传统热​​分解制备的催化剂相比，等离子体分解催化剂具有较小的 Ni 纳米粒子，主要暴露 Ni(111) 晶格边缘。等离子体分解的催化剂显示出更高的还原性，这有助于在氢还原后形成更活泼的Ni ⁰物种。它还表现出更多的碱性位点和氧空位，促进了 CO 的活化₂ . 此外，等离子体分解的催化剂倾向于形成高活性碳，从甲烷分解、CO ₂重整的初始反应到与二氧化碳的反应。这导致对于CO ₂重整的抗焦炭性增强。