Abstract Composite materials of zirconia–alumina (Zr–Al2O3) with Al/Zr 10 ratio was successfully synthesized by sol–gel method and followed by different sulfiding methods. The synthesized catalysts were characterized by various techniques such as X-ray powder diffraction (XRD), N2-sorption, NH3-Temperature Programmed Desorption (NH3-TPD), Diffuse Reflectance UV–Vis Spectrophotometers (DR UV–Vis), Scanning Electron Microscopy (SEM), and the biodiesel was analyzed by Gel permeation chromatography (GPC) and Gas chromatography–mass spectrometry (GC–MS). The jatropha oil conversion of above 96% was obtained at optimized conditions of 110 °C, 1:20 jatropha oil to methanol ratio, 1.5 g of catalysts and 3 h reaction time. The catalysts reusability study was performed for 6th cycles using sulphated Zr–Al2O3 under hydrothermal (H) method, denoted as SO42−/Zr–Al2O3 (10)–H and the activity is correlated with physico-chemical properties.

中文翻译：

---

硫酸化 Zr-Al2O3 催化剂通过麻风树油生产绿色柴油

摘要 采用溶胶-凝胶法和不同的硫化方法成功合成了Al/Zr 10 比的氧化锆-氧化铝(Zr-Al2O3) 复合材料。合成的催化剂通过各种技术表征，如 X 射线粉末衍射 (XRD)、N2 吸附、NH3-温度程序解吸 (NH3-TPD)、漫反射紫外-可见分光光度计 (DR UV-Vis)、扫描电子显微镜（SEM），并通过凝胶渗透色谱（GPC）和气相色谱 - 质谱（GC-MS）分析生物柴油。在110°C、1:20的麻风树油甲醇比、1.5 g催化剂和3 h反应时间的优化条件下，获得了96%以上的麻风树油转化率。使用硫酸化 Zr-Al2O3 在水热 (H) 方法下进行第 6 次循环的催化剂可重复使用性研究，