Sintesis 2-Hidroksi Propil Laurat dari Asam Lemak

Yulianti, Adiningtyas Prima (2009) Sintesis 2-Hidroksi Propil Laurat dari Asam Lemak. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Solar sebagai bahan bakar diesel secara alamiah mempunyai kandungan belerang. Kadar belerang tersebut, harus dihilangkan agar tidak mengkontaminasi bahan bakar solar. Pengurangan belerang bahan bakar solar, menyebabkan efek baru, yaitu menyebabkan penurunan daya pelumasannya. Daya pelumasan dapat ditingkatkan dengan menambah zat aditif berupa turunan hidroksi ester. Penelitian serupa tentang pembuatan zat aditif yang berasal dari bahan baku minyak sawit mentah melalui reaksi transesterifikasi telah dilakukan. Dalam penelitian ini digunakan sampel campuran asam lemak dari produk samping pengolahan pabrik minyak goreng yang diharapkan sebagai aditif pelumas minyak solar. Campuran asam lemak dipisahkan menjadi asam laurat. Esterifikasi dilakukan dengan mereaksikan asam laurat dan BF3 dalam methanol menghasilkan metil laurat. Metil laurat yang diperoleh diesterifikasi lebih lanjut menggunakan propilena glikol dengan katalis K₂CO₃. Turunan hidroksi ester yang diperoleh, diidentifikasi dengan kromatografi gas-spektrometer massa (KG-SM). Hasil analisa KG-SM menunjukkan adanya senyawa 2-hidroksi propil laurat (14). Rendemen yang diperoleh dari senyawa 2-hidroksi propil laurat adalah 15,99%.
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Naturally, diesel fuel have contain a sulfur. That sulfur, must reduced so can not contaminated diesel fuel. The desulphurization of diesel fuel has caused new effect, that is reduction of its lubricity. The lubricity could be increased by added additives such as hydroxy ester derivative. Research about synthesis of hydroxy ester derivatives have been conducted from crude palm oil through transesterification. Sample were used in this research, getting from oil frying industries that will be hope made an additive to increasing lubricate of diesel fuel. Fatty acid extracted to lauric acid. Transesterification of lauric acid with BF3 in methanol gave methyl laurate. Methyl laurate were esterification using propylene glycol with K₂CO₃. Analysis of the hydroxy ester derivatives by gas chromatography-mass spectrometry (GC-MS) showed the presence of 2-hydroxy propyllaurate. Rendement that showed from 2-hydroxy propyllaurate is 15.99%.

Item Type:	Thesis (Other)
Additional Information:	RSKi 547.03 Yul s
Uncontrolled Keywords:	asam lemak, asam laurat, esterifikasi, hidroksi ester,KO.SM, fatty acid, lauric acid, esterification, hydroxy ester, GC-MS
Subjects:	Q Science > QD Chemistry > QD481 Chemical structure.
Divisions:	Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	magang .
Date Deposited:	09 Oct 2026 02:42
Last Modified:	09 Oct 2026 02:42
URI:	http://repository.its.ac.id/id/eprint/145457

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