%0 Journal Article %T Methanolysis of Mixed Crop Oils (<i>Hevea brasiliensis</i> and <i>Jatropha curcas</i> L.) into Biodiesel: Kinetics Study %A Azhari M. Syam %A Zulfikar   %A Suryati   %A Leni Maulinda %A Fikri Haspita %J Smart Grid and Renewable Energy %P 440-448 %@ 2151-4844 %D 2017 %I Scientific Research Publishing %R 10.4236/sgre.2017.812029 %X In this study, the methanolysis of mixed crop oils (Hevea brasiliensis and Jatropha curcas L.) was investigated. Due to the oils contain high impurities, a particular pre-treatment of which was carried out. For alkali-catalyzed methanolysis, few parameters (such as: molar ratio, catalyst percentage, and reaction time) were studied. The results showed that the methanolysis optimum conditions were 5.5 of molar ratio, 0.9% w/w of catalyst, and 60 minutes of reaction time with the highest yield of 98.9%. The kinetics study indicated that first order reaction mechanism with reaction rate constant and activation energy were 1.5 กม 10-2 minute-1 and 23.93 KJ?mol-1 respectively. As fuel, the physicochemical properties of biodiesel met the standard values required by ASTM D6751. %K Biodiesel %K Methanolysis %K < %K i> %K Hevea brasiliensis< %K /i> %K < %K i> %K Jatropha curcas< %K /i> %K s L. %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=81386