Preparation of various silica-supported copper-nanocatalysts (Cu/SiO₂) by deposition precipitation and impregnation methods was demonstrated. These catalysts were prepared using urea and sodium hydroxide as the precipitating-agents. All the catalysts were systematically characterized by various analytical, spectroscopic and imaging techniques including XRD, N₂ sorption analysis, N₂O chemisorption, TPD, TPR, DRUV-VIS XPS and TEM. The Cu/SiO₂ catalyst prepared using urea as the precipitating-agent exhibited uniform and narrow size distribution copper-nanoparticles to that prepared using sodium hydroxide as well as impregnation method. The performance of the catalyst with different metal loading is analyzed and a Cu-loading of 15 wt% was found to be optimum for the maximum yield. Thus, the catalytic activity of 15 wt% Cu/SiO₂ was systematically examined for the hydrogenolysis of glycerol reaction. The influence of reaction conditions and structure activity correlation were also elucidated in this work.

演示了通过沉积沉淀和浸渍法制备各种二氧化硅负载的铜纳米催化剂（Cu / SiO ₂）。这些催化剂使用尿素和氢氧化钠作为沉淀剂制备。所有催化剂均通过各种分析，光谱和成像技术进行了系统表征，包括XRD，N ₂吸附分析，N ₂ O化学吸附，TPD，TPR，DRUV-VIS XPS和TEM。铜/二氧化硅₂与使用氢氧化钠和浸渍法制备的催化剂相比，使用脲作为沉淀剂制备的催化剂显示出均匀且窄的粒度分布的铜纳米颗粒。分析了具有不同金属负载量的催化剂的性能，发现15重量％的铜负载量对于最大产率而言是最佳的。因此，针对甘油反应的氢解，系统地检查了15wt％的Cu / SiO ₂的催化活性。这项工作还阐明了反应条件和结构活性相关性的影响。