Modification of Tert-butylhydroquinone with Palmitic Acid as a Soluble Antioxidant for Biodiesel Additive

Penulis: Hery Sutanto, Amanda Jehan Pramastiani, Silvya Yusri, Evita H. Legowo, Mohammad Nasikin
Biodiesel is a product resulted from the process of transesterification of vegetable oil or animal fat. Biodiesel is a renewable fuel and used as alternative to fossil fuel diesel. However, one of the biodiesel drawbacks which is the oxidation can effects the storage stability of the biodiesel. one way to solve this issue is by using antioxidant additives to improve the storage the stability pf biodiesel. Tert-butylhydroquinone is a common synthetic phenolic antioxidant and has a proven superior antioxidant activity due to its polar characteristics. the difference in polarity between non-polar biodiesl and phenolic antioxidant makes their solubility become very low. in this study, modification of TBHQ with palmitic acid was done by using Friedel-Craft acylation to increase its solubility in biodiesel. the resulting proposed product 1-(2-(tert-butyl)-3,6-dihydroxyphenyl)hexadecane-1-one, was confirmed using TLC, HPLC, LC-MS/MS and 1H-NMR. The product showed solubility limit at concentration 2500 ppm and antioxidant activity with the IC50 value of 675.38 ppm, which both results are lower compared to TBHQ.

IOP Conf. Series: Materials Science and Engineering742 (2020) 012003

DOI: 10.1088/1757-899X/742/1/012003

No. Arsip : LIPI-20200803