TRACING/DEVELOPMENT OF CATALYSTS FOR REDOX REACTION OF METHYL LINOLEATE (BIODIESEL) WITH GLYCEROL

• Main Author: Fauziyah Nursaid, Kholidatul
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/66487
• Institution: Institut Teknologi Bandung

Thermodynamic calculations showed that the following transfer hydrogenation reaction with glycerol as hydrogen donor ???????????????????????????????????????????????? ???? ???? ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ???? ???? ???????????????????????????????????????????????????????? methyl linoleate glycerol methyl oleate dihydroxyacetone will be able to proceed to the right with a complete conversion even at room temperature, provided a suitable catalyst is available. Thus, if such a catalyst could be found then a process with high commercial value could be established : methyl linoleate will be hydrogenated into methyl oleate and, at the same time, glycerol will be dehydrogenated into a higher added-value product, that is dihydroxyacetone. Further literature study revealed that compounds (Ni½Zn½)(OOCH)2.2H2O, Ni(CrIII)2O (OOCH)6.3H2O, and Ni(FeIII)2O(OOCH)6.3H2O are potential candidates to become the catalyst for the above redox reaction between methyl linoleate and glycerol. The objective of the research proposed here is to obtain experiments-based prove/disprove on the hypothesis of effectivity of the catalysts candidates and to further explore the exact operating conditions for the catalyst candidates that are proven to be the most effective. The experimental examinations will be carried out by adding the catalyst into solution of biodiesel, glycerol, and acetone with the addition of DMSO (if the catalyst was not an imidazole complex) which was then reacted at a reaction temperature (= 40 °C) and at the reflux temperature of the reaction mixture (about 56 °C) for 6 hours. The biodiesel resulting from the reaction under reflux conditions was then analyzed for iodine value, peroxide value and its oxidation stability through the rancimat test. Based on the experiment, among the catalyst candidates tested, none of the catalysts proved effective for carrying out a redox reaction (catalytic hydrogenation-transfer) at a relatively low temperature (<100 °C) for 6 hours