Methods that can impede or reverse the effects of high-temperature sintering and deactivation are necessary to improve the utilization of catalytic materials. This work demonstrates that exposure to intermediate temperatures (800 °C) can effectively regenerate catalytic performance in sintered Pd-CeO₂ catalysts, through the disintegration and partial redispersion of agglomerated Pd, which increases the abundance of sites that interface strongly with the CeO₂ support. Pretreating the catalyst at 800 °C before sintering forms highly dispersed Pd species that slow the sintering of small, polycrystalline CeO₂ domains. This preserves the density of Ce³⁺ sites that trap mobile Pd, which improves the efficacy of regeneration. The regenerated catalyst is effective in the co-oxidation of CO and C₃H₈, two species which are known to competitively adsorb. The simplicity of this treatment makes it attractive for on-stream regeneration of catalyst performance.

可以阻止或逆转高温烧结和失活效应的方法对于提高催化材料的利用率是必要的。这项工作表明，暴露于中间温度（800°C）可以有效地再生烧结 Pd-CeO ₂催化剂的催化性能，通过团聚 Pd 的分解和部分再分散，这增加了与 CeO ₂载体强烈接触的位点的丰度. 在烧结前在 800 °C 下对催化剂进行预处理会形成高度分散的 Pd 物质，从而减缓小的多晶 CeO ₂区域的烧结。这保留了 Ce ^3+的密度捕获移动 Pd 的位点，从而提高再生效率。_{再生催化剂在CO和C 3} H ₈的共氧化中是有效的，这两种已知竞争吸附的物质。这种处理的简单性使其对催化剂性能的在线再生具有吸引力。