Heterogeneous catalysts comprising palladium as active phase are widely used to promote a variety of reactions due to the easy tuning of Pd particle size and its oxidation state. When Pd is combined with CeO₂, specific structural arrangements at the nanoscale level can strongly impact on activity and durability, especially in methane oxidation. In this work, the effect of different palladium salt precursors on the final state of a Pd/CeO₂ catalyst prepared by dry milling was studied by coupling thermogravimetric characterization and temperature-programmed reaction methods. The combination of palladium acetate and a mild oxidative thermal treatment proved successful in generating an appropriate Pd⁰/Pd²⁺ mixture on the ceria surface with improved methane oxidation activity.

包含钯作为活性相的非均相催化剂由于易于调节Pd的粒径及其氧化态而被广泛用于促进各种反应。当Pd与CeO ₂结合时，纳米级的特定结构排列会极大地影响活性和耐久性，特别是在甲烷氧化中。在这项工作中，通过结合热重表征和程序升温反应方法，研究了不同钯盐前体对干磨制备的Pd / CeO ₂催化剂最终状态的影响。醋酸钯和温和的氧化热处理相结合，成功生成了合适的Pd ⁰ / Pd ²⁺ 混合物在二氧化铈表面上具有改善的甲烷氧化活性。