Putri, Felita Dwinanda and Susanto, Heru and Darmawan, Akhmad (2019) Synthesis of Tert-Butylhydroquinone Derivative as a Soluble Biodiesel Antioxidant. Bachelor thesis, Swiss German University.

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Abstract

Biodiesel has been widely used as a substitution for petroleum diesel for years. It offers some various advantages such as higher cetane number, higher efficiency, and no sulfur content. Despite the advantages, biodiesel has one major drawback which is prone to oxidation. The oxidation degrades its quality and causes disturbances to the machine during operations. Therefore, antioxidant was added into biodiesel. However, Tertbutylhydroquinone (TBHQ), as the best antioxidant for biodiesel, has low oil solubility. Hence, in this research, TBHQ was modified with methyl linoleate via coupling reaction using benzoyl peroxide. TLC, HPLC, and LC-MS results confirmed that the reaction had successfully produced a new product and its isomer, methyl (10E,12Z)-9-(4-(tertbutyl)-2,5-dihydroxyphenyl)octadeca-10,12-dienoate and methyl (9Z,11E)-13-(4-(tertbutyl)-2,5-dihydroxyphenyl)octadeca-9,11-dienoate . The yield was found to be 10.4%. The product mixture was subjected to a solubility test and an antioxidant activity evaluation. The result showed that the reaction product had higher oil solubility than TBHQ indicated by a steady increase in product absorbance up to 7000 ppm. TBHQ had reached its solubility limit at 5500 ppm. DPPH dot-blot assay, acid value, and rancimat test results revealed that the product mixture had antioxidant activity

Item Type:	Thesis (Bachelor)
Uncontrolled Keywords:	Biodiesel ; Antioxidant ; TBHQ ; Methyl Linoleate ; Benzoyl Peroxide
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ807 Renewable energy sources
Divisions:	Faculty of Life Sciences and Technology > Department of Sustainable and Energy Environment
Depositing User:	Adityatama Ratangga
Date Deposited:	18 May 2020 09:33
Last Modified:	18 May 2020 09:33
URI:	http://repository.sgu.ac.id/id/eprint/425

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