School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia.
Bioresour Technol. 2011 Jun;102(11):6392-8. doi: 10.1016/j.biortech.2011.03.039. Epub 2011 Mar 21.
The synthesis of fatty acid methyl esters (FAME) as a substitute to petroleum diesel was investigated in this study from crude jatropha oil (CJO), a non-edible, low-cost alternative feedstock, using aluminium modified heterogeneous basic oxide (Mg-Zn) catalyst. The transesterification reaction with methanol to methyl esters yielded 94% in 6h with methanol-oil ratio of 11:1, catalyst loading of 8.68 wt.% at 182°C and the properties of CJO fuel produced were determine and found to be comparable to the standards according to ASTM. In the range of experimental parameters investigated, it showed that the catalyst is selective to production of methyl esters from oil with high free fatty acid (FFA) and water content of 7.23% and 3.28%, respectively in a single stage process. Thus, jatropha oil is a promising feedstock for methyl ester production and large scale cultivation will help to reduce the product cost.
本研究以非食用、低成本的替代原料粗麻疯树油（CJO）为原料，采用铝改性非均相堿性氧化物（Mg-Zn）催化剂，研究了脂肪酸甲酯（FAME）作为石油柴油替代品的合成。在甲醇-油比为 11:1、催化剂用量为 8.68wt.%、反应温度为 182°C 的条件下，6h 内可将甲醇转化为甲酯，转化率为 94%。所制备的 CJO 燃料的性能与 ASTM 标准相当。在所研究的实验参数范围内，结果表明，该催化剂对高游离脂肪酸（FFA）和含水量分别为 7.23%和 3.28%的油的甲酯选择性生产具有选择性，可在单级过程中进行。因此，麻疯树油是甲酯生产的一种很有前途的原料，大规模种植将有助于降低产品成本。
