Agista Safitri, - (2021) SINTESIS FRUKTON DARI ETIL ASETOASETAT DAN ETILEN GLIKOL MENGGUNAKAN KATALIS H2SO4. S1 thesis, Universitas Pendidikan Indonesia.
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Abstract
Frukton merupakan salah satu bahan wewangian dengan aroma seperti apel yang dapat diperoleh melalui proses asetalisasi menggunakan katalis asam H2SO4. Di Indonesia, frukton belum diproduksi dan belum ditemukan penelitian terkait sintesis senyawa frukton. Penelitian ini bertujuan untuk mengetahui pengaruh teknik azeotrope serta kondisi optimum dari pembentukan senyawa frukton menggunakan katalis H2SO4. Pada penelitian ini dilakukan sintesis frukton dari etil asetoasetat dan etilen glikol menggunakan metode refluks. Refluks yang dilengkapi dengan dean stark dan sikloheksan untuk membentuk campuran azeotrope memberikan hasil yang lebih baik bila dibandingkan dengan tanpa pembentukan azeotrop. Penentuan kondisi optimum dilakukan pada variasi suhu pada suhu 74C, 78C dan 82C, dan variasi pereaksi etil asetoasetat dan etilen glikol 1:1,5 ; 1:2 ; dan 1:3. Selain itu juga dilakukan variasi jumlah katalis H2SO4 sebanyak 0,002 mol; 0,004 mol; 0,006 mol; 0,008 mol; dan 0,01 mol serta variasi waktu reaksi 0,5 jam; 1 jam; 1,5 jam; 2 jam; 2,5 jam; 3 jam; 3,5 jam; dan 4 jam. Analisis hasil sintesis dilakukan menggunakan instrumen GC (Gas Chromatography) dan GC-MS (Gas Chromatography-Mass Spectrometry). Ditemukan kondisi optimum sintesis frukton, yaitu pada suhu 78C, perbandingan pereaksi etil asetoasetat terhadap etilen glikol 1:2, jumlah katalis H2SO4 sebanyak 0,006 mol dan waktu reaksi selama 2 jam dengan perolehan hasil dengan tingkat kemurnian 87,07%. Fructone is one of the fragrance ingredients with an apple-like aroma that can be obtained through the acetalization process using an acid catalyst H2SO4. In Indonesia, fructones have not been produced and no research has been found regarding the synthesis of fructone compounds. This study aims to determine the effect of the azeotrope technique and the optimum conditions for the formation of fructone compounds using H2SO4 as a catalyst. In this study, the synthesis of fructone from ethyl acetoacetate and ethylene glycol was carried out using the reflux method. Reflux equipped with dean stark and cyclohexane to form an azeotrope mixture gave better results when compared with no azeotrope formation. Determination of the optimum conditions was carried out at various temperatures at 74C, 78C and 82C, and the reagent variations of ethyl acetoacetate and ethylene glycol 1:1.5 ; 1:2 ; and 1:3. In addition, variations in the amount of H2SO4 catalyst were also carried out as much as 0.002 mol; 0.004 moles; 0.006 moles; 0.008 moles; and 0.01 mol and the variation of reaction time is 0.5 hours; 1 hour; 1.5 hours; 2 hours; 2.5 hours; 3 hours; 3.5 hours; and 4 hours. Analysis of the synthesis results was carried out using GC (Gas Chromatography) and GC-MS (Gas Chromatography-Mass Spectrometry) instruments. The optimum conditions for the synthesis of fructones were found, namely at a temperature of 78C, the ratio of ethyl acetoacetate to ethylene glycol 1:2, the amount of H2SO4 catalyst was 0.006 mol and the reaction time was 2 hours with the yield obtained with a purity level of 87.07%.
| Item Type: | Thesis (S1) |
|---|---|
| Uncontrolled Keywords: | Frukton, Sintesis, H2SO4 |
| Subjects: | L Education > L Education (General) Q Science > QD Chemistry |
| Divisions: | Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam > Jurusan Pendidikan Kimia > Program Studi Kimia (non kependidikan) |
| Depositing User: | Agista Safitri |
| Date Deposited: | 25 Aug 2021 05:13 |
| Last Modified: | 25 Aug 2021 05:13 |
| URI: | http://repository.upi.edu/id/eprint/64118 |
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