Triglycerides and fatty acid derivatives can be converted to hydrocarbon-grade green diesel that are entirely fungible to the fossil fuels. In the present study, deoxygenation (DO) process of triolein was studied by using mesoporous SiO₂-Al₂O₃ supported Co-Ca catalyst. The presence of active metals (Co-Ca) showed high DO activity exclusively via decarboxylation/decarbonylation (deCOx) pathways with maximum hydrocarbon n-(C₈-C₂₀) yield of 73%, and high selectivity of n-C₁₅ and n-C₁₇ fractions. This results suggested the acid-base active sites of catalyst provide selective deCOx pathway of triglycerides structure. In additional, the presence of high surface area of Co-Ca/ SiO₂-Al₂O₃ enhance the metal dispersion for better accessment of large molecular reactant with catalyst during DO process. An optimum Co metal content (10 wt.%) for deCOx reaction was observed, while an excess Co content is not preferable due to tendency of cracking effect. The efficiency of Co-Ca/SiO₂-Al₂O₃ was investigated by using non-edible feedstock (e.g. Ceiba oil and Sterculia oil) along with catalyst stability study were carried out. Resulst also indicated that degradation of DO activity was due to the formation of coke.

甘油三酸酯和脂肪酸衍生物可以转化为完全可与化石燃料替代的烃类绿色柴油。在本研究中，通过使用介孔SiO ₂ -Al ₂ O ₃负载的Co-Ca催化剂研究了三油精的脱氧（DO）工艺。活性金属（Co-Ca）的存在仅通过脱羧/脱羰化（deCOx）途径显示出高DO活性，最大烃n-（C ₈ -C ₂₀）产率为73％，n -C ₁₅和n的选择性高-C ₁₇分数。该结果表明催化剂的酸碱活性位点提供了甘油三酸酯结构的选择性deCOx途径。另外，Co-Ca / SiO ₂ -Al ₂ O ₃的高表面积的存在增强了金属分散性，以便在DO过程中更好地利用催化剂获得大分子反应物。观察到用于deCOx反应的最佳Co金属含量（10重量％），而过量的Co含量由于开裂效果的趋势而不优选。Co-Ca / SiO ₂ -Al ₂ O ₃的效率通过使用非食用原料（例如木棉油和Sterculia油）进行了研究，并进行了催化剂稳定性研究。Resulst还表明DO活性的降低是由于焦炭的形成。