The methanolysis of Simarouba Glauca DC oil, was studied using ZnCuAl layered double hydroxides catalysts prepared through urea hydrolysis. The influence of calcination temperature was investigated over the textural properties and catalytic activity of the ZnCuAl catalysts. The solids were pretreated at different calcination temperatures, followed by their characterization by means of XRD, SEM, FT-IR, CO₂-TPD, decomposition of 2-propanol and their textural properties assessed with the aid of N₂ adsorption and elemental analysis with ICP-MS. The reaction products were studied through FT-IR and gas chromatography.

The XRD results showed formation of a hydrotalcite-type material after drying at 100 °C, although thermal treatment at temperatures greater than 200 °C led to formation of a metal oxides mixture. FT-IR allowed checking the evolution of the OH–, CO₃^2– and NO₃– groups after thermal treatment, which caused main changes on the basic propeties of the catalysts, evidenced through the CO₂-TPD and decomposition of 2-propanol results. The catalyst calcined at 300 °C rendered a larger yield toward biodiesel production during methanolysis of the Simarouba Glauca DC oil, which is atributed to the presence of a larger concentration of medium strength basic sites. The ZnCuAl-300 catalyst showed a 6% decrease in the yield towards biodiesel production after being subjected to three reaction cycles, which was attributed to the partial segregation of metallic Cu to the catalyst surface, corroborated by XRD.

使用通过尿素水解制备的ZnCuAl层状双氢氧化物催化剂研究了Simarouba Glauca DC油的甲醇分解。研究了煅烧温度对ZnCuAl催化剂结构性能和催化活性的影响。在不同的煅烧温度下对固体进行预处理，然后通过XRD，SEM，FT-IR，CO ₂ -TPD表征，2-丙醇的分解以及借助N ₂吸附和元素分析对结构特性进行评估。 ICP-MS。通过FT-IR和气相色谱研究反应产物。

XRD结果显示在100℃下干燥后形成水滑石型材料，尽管在高于200℃的温度下热处理导致形成金属氧化物混合物。FT-IR可以检查热处理后OH–，CO ₃ ^2–和NO ₃ –基团的演变，这引起了催化剂基本特性的主要变化，这通过CO ₂ -TPD和2-丙醇的分解得以证明。结果。在Simarouba Glauca的甲醇分解过程中，在300°C下煅烧的催化剂为生物柴油生产提供了更高的收率DC油，归因于存在较高浓度的中等强度碱性部位。经过三个反应循环后，ZnCuAl-300催化剂的生物柴油产量降低了6％，这归因于XRD证实了金属Cu在催化剂表面的部分偏析。