Catalytic wet oxidation (CWO) is a promising technology for the treatment of wastewater and abatement of organic waste, in which the unique characteristics of water at elevated temperatures and pressures are utilised. In this study, the catalytic wet oxidation reaction of glucose (model compound of carbohydrate) was evaluated using three different rare earth oxides; CeO₂, Dy₂O₃, and Tb₄O₇ as catalyst supports to the active phase, Cu. The heterogeneous catalysts were prepared using the incipient wetness impregnation method. The catalysts performance was evaluated by comparing the results from catalysts characterization and the chemical oxygen demand (COD) removal efficiency of each catalyst. The highest COD conversion (80 %) was achieved with Cu/Tb₄O₇ catalyst prepared at a dopant solution concentration of 1.0 M. The COD results revealed that the introduction of Cu metal into the catalyst supports greatly enhances the catalyst activity. However, leaching was detected in all catalysts, suggesting that the stability and reusability of the catalysts were low.

催化湿式氧化（CWO）是一种有前途的技术，用于处理废水和减少有机废物，其中利用了水在高温和高压下的独特特性。在这项研究中，使用三种不同的稀土氧化物评估了葡萄糖（碳水化合物的典范化合物）的催化湿式氧化反应。CeO ₂，Dy ₂ O ₃和Tb ₄ O ₇作为催化剂负载到活性相Cu。采用初期湿润浸渍法制备了非均相催化剂。通过比较催化剂表征的结果和每种催化剂的化学需氧量（COD）去除效率，评估了催化剂的性能。用掺杂剂溶液浓度为1.0 M制备的Cu / Tb ₄ O ₇催化剂可实现最高的COD转化率（80％）。COD结果表明，将铜金属引入催化剂载体可大大提高催化剂活性。然而，在所有催化剂中均检测到浸出，这表明催化剂的稳定性和可重复使用性较低。