The Ce/Zr ratio of Pd/Ce-ZrO₂ catalysts was systematically changed in order to investigate the effect of oxygen vacancy concentration on their decarboxylation activityunder solvent-free conditions for potential sustainable petroleum like biodiesel production. Pd/Ce_0.5Zr_0.5O₂ exhibited the highest catalytic activity from all other tested catalysts because it contained the highest oxygen vacancy concentration and Pd dispersion, as shown by the X-ray photoelectron spectroscopy, Raman spectroscopy, and CO-chemisorption data. A catalyst deactivation study also showed that both the Pd dispersion and the oxygen vacancy concentration influences the catalytic activity.The catalyst deactivation was found to occur mainly due to Pd sintering, decreases in the BET surface area and Pd dispersion, and partially due to the loss of oxygen vacancies.

为了研究在无溶剂条件下氧空位浓度对其脱羧活性的影响，对于潜在的可持续石油如生物柴油生产，系统地改变了Pd / Ce-ZrO ₂催化剂的Ce / Zr比。钯/铈_0.5 Zr _0.5 O ₂X射线光电子能谱，拉曼光谱和CO化学吸附数据显示，它具有最高的氧空位浓度和Pd分散性，因此具有所有其他测试催化剂最高的催化活性。催化剂失活研究还表明，Pd分散体和氧空位浓度均会影响催化活性，发现催化剂失活主要是由于Pd烧结，BET表面积和Pd分散体减少以及部分由于损耗造成的。氧空位。