Glycerol and carbonates (used as CO₂ sources) were simultaneously converted to carboxylic acid salts under mild hydrothermal media over supported Pt catalysts. The dehydrogenation of glycerol produced lactate (LA); at the same time, hydrogen molecules released from glycerol were effectively transferred to reduce carbonate or bicarbonate ions to formate (FA). Several reaction parameters, including temperature, time, glycerol and carbonate concentration, water amount, catalyst loading, and CO₂ source were evaluated. Under the optimized reaction conditions, ~50% yield of LA from glycerol and ~26% yield of FA from potassium carbonate were achieved concomitantly over Pt/γ-Al₂O₃ catalyst. Importantly, this was done without using external H₂ or additional strong base. The textural, structural, and chemical properties of the catalysts were evaluated using N₂ adsorption–desorption, powder X-ray diffractometry (PXRD), inductively coupled plasma-atomic emission spectrometry, scanning transmission electron microscopy (STEM), temperature programmed reduction, and temperature programmed desorption analysis. The catalyst was reused for four consecutive cycles with little variation in catalytic activity and product distribution. Used catalysts were further characterized using, PXRD, STEM, and X-ray photoelectron spectral analysis to better understand the structural and chemical changes that occurred in the recycled catalysts, and the factors governing change in the catalytic activity. A plausible reaction pathway was proposed based on the catalytic results and the product distribution data obtained.

甘油和碳酸盐（用作 CO ₂源）在温和的水热介质下在负载型 Pt 催化剂上同时转化为羧酸盐。甘油脱氢产生乳酸（LA）；同时，从甘油释放的氢分子被有效转移以将碳酸盐或碳酸氢根离子还原为甲酸盐（FA）。评估了几个反应参数，包括温度、时间、甘油和碳酸盐浓度、水量、催化剂负载和CO ₂源。在优化的反应条件下，在 Pt/γ-Al ₂ O ₃催化剂上同时实现了由甘油产生约​​ 50% 的 LA 和由碳酸钾产生约 26% 的 FA 收率。重要的是，这是在不使用外部 H₂或额外的强碱。使用 N ₂评估催化剂的结构、结构和化学性质吸附-解吸、粉末 X 射线衍射 (PXRD)、电感耦合等离子体原子发射光谱、扫描透射电子显微镜 (STEM)、程序升温还原和程序升温脱附分析。催化剂连续重复使用四个循环，催化活性和产物分布几乎没有变化。使用 PXRD、STEM 和 X 射线光电子能谱分析进一步表征用过的催化剂，以更好地了解回收催化剂中发生的结构和化学变化，以及控制催化活性变化的因素。根据催化结果和获得的产物分布数据提出了一个合理的反应途径。