The aerobic oxidation of cinnamyl alcohol in toluene under autoxidation conditions has been studied using a range of 1 wt% Au–Pd/TiO₂ catalysts. The catalysts have been studied to determine the effect of preparation method (impregnation and sol immobilisation) and metal ratio on the conversion of cinnamyl alcohol and the selectivity to cinnamaldehyde. The catalysts prepared by sol-immobilisation demonstrate higher selectivity to the desired aldehyde than the analogous impregnation materials. The most active catalyst was found to be 0.75 wt% Au–0.25 wt% Pd/TiO₂ prepared by sol-immobilisation and this demonstrates the importance of metal ratio optimisation in this catalytic process. Furthermore, this metal ratio was found to be most stable under the reactions conditions with little change observed over multiple uses.

在自氧化条件下，对甲苯中肉桂醇的需氧氧化进行了研究，使用了1 wt％的Au-Pd / TiO ₂催化剂。对催化剂进行了研究，以确定制备方法（浸渍和溶胶固定）和金属比例对肉桂醇转化率和对肉桂醛的选择性的影响。与类似的浸渍材料相比，通过溶胶固定化制备的催化剂对所需醛的选择性更高。发现活性最高的催化剂是0.75 wt％Au–0.25 wt％Pd / TiO ₂通过溶胶固定化制备，这证明了在该催化过程中优化金属比的重要性。此外，发现该金属比在反应条件下是最稳定的，在多次使用中观察到很少的变化。