Sintesis Ester Terhidroksilasi dengan Bahan Baku Destilat Asam Lemak Minyak Sawit dan Metil Oleat

Silviana, Silviana (2012) Sintesis Ester Terhidroksilasi dengan Bahan Baku Destilat Asam Lemak Minyak Sawit dan Metil Oleat. 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 mengontaminasi bahan bakar solar melalui proses desulfurisasi. Tapi desulfurisasi menyebabkan efek baru yaitu menurunkan lubrisitas solar. Lubrisitas solar dapat ditingkatkan dengan penambahan zat aditif berupa senyawa ester terhidroksilasi. Pembuatan ester terhidroksilasi antara lain berasal dari bahan baku minyak sawit mentah melalui reaksi transesterifikasi telah dilakukan. Penelitian menggunakan sampel metil oleat dan DALMS (Destilat Asam Lemak Minyak Sawit) untuk sintesis ester terhidroksilasi. DALMS diesterifikasi dengan BF₃/MeOH menghasilkan metil ester DALMS. Metil ester DALMS yang diperoleh ditransesterifikasi menggunakan propilen glikol dan etilen glikol dengan katalis K₂CO₃ menghasilkan ester terhidroksilasi. Metil oleat ditransesterifikasi dengan cara yang sama. Senyawa ester terhidroksilasi yang diperoleh, diidentifikasi dengan kromatografi gas-spektrometer massa (KG-SM). Hasil analisa KG-SM produk transesterifikasi metil ester DALMS menunjukkan adanya senyawa 2-hidroksi propil palmitat, 2-hidroksi propil oleat, 2-hidroksi etil palmitat, dan 2-hidroksi etil oleat. Sedangkan produk transesterifikasi metil oleat adalah 2-hidroksi propil oleat dan 2-hidroksi etil oleat.
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Diesel fuel naturally has a sulfur content. Sulfur content must be reduce in order to not contaminate diesel fuel by desulfuritation. But a new desulfuritation cause reduction of diesel oil lubricity. The lubricity could be increased by adding additives such as hydroxylated ester. Synthesis of hydroxylated ester such as from crude palm oil was carried out by transesterification. In this study, hydroxylated ester was synthesized from methyl oleate and PFAD. Esterification of PFAD was carried out with methanol and using BF₃/MeOH as catalyst, followed by a transesterification process with propylen glycol and ethylen glycol and using K₂CO₃ as catalyst. With the same prosedur, methyl oleate is transesterified. Product are analysed by Gas Chromatography-Mass Spectrometry (GC-MS). Gas Chromatography-Mas Spectrometry (GC-MS) shows 2-hydroxy propyl palmitate, 2-hydroxy propyl oleate, 2-hydroxy ethyl palmitate, and 2-hydroxy ethyl oleate as content of PFAD methyl ester transesterification product. While the product of transesterification of methyl oleate is 2-hydroxy propyl oleate and 2-hydroxy ethyl oleate.

Item Type:	Thesis (Other)
Additional Information:	RSKi 547.27 Sil s
Uncontrolled Keywords:	DALMS, esterifikasi, ester terhidroksilasi, KG-SM, metil oleat, esterification, GCMS, hydroxylated ester, methyl oleate, PFAD
Subjects:	Q Science > QD Chemistry > QD481 Chemical structure.
Divisions:	Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	magang .
Date Deposited:	20 Oct 2026 02:45
Last Modified:	20 Oct 2026 02:45
URI:	http://repository.its.ac.id/id/eprint/145691

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