Pembuatan 2-Etilheksil Miristat dari Esterifikasi 2-Etilheksil Alkohol dan Asam Miristat pada Perbandingan Waktu Reaksi dan Daya Mikrowave Menggunakan Katalis Enzim Lipase

Abstract

The production of 2-Ethylhexyl Miristat from myristic acid and 2-Ethylhexyl alcohol has been performed through esterification reaction using lipase enzyme as catalyst and microwave radiation. The parameters studied in this research were reaction time with variations of 0.25, 0.5, 1, 5, 10, 15, and 20 minutes and microwave power with variations of 10%, 20%, 30%, 40% and 50%. Determination of the conversion of 2-Ethylhexyl Miristat was established by alkalimetric titration. The confirmation of the production of 2-Ethylhexyl myristate using FT-IR based on the changes in its functional groups using. For reaction time parameter, the maximum conversion of 85.67 ± 0.61% was obtained obtained under the conditions of 0.5 min reaction time, 20% microwave power, 1:3 molar ratio, and 5% catalyst weight. While for the microwave power parameter, the maximum conversion of 90.76 ± 0.59% was achieved using 30% of microwave power, 0.5 minutes reaction time, ratio molar of 1:3 and 5 wt.% catalyst weight. The formation of 2-Ethylhexyl myristate was characterized by the disappearance of the hydroxyl group (O-H) in the 3400-2400 wave number and the presence of -C-O-C- ester stretching vibrations at 1036 cm-1 wave number.