Jihan Nurafifah Hernawan, - (2023) REAKSI SITRONELAL DENGAN ETILENA GLIKOL MENGGUNAKAN KATALIS ASAM SULFAT. S1 thesis, Universitas Pendidikan Indonesia.
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Abstract
Penelitian ini bertujuan untuk menentukan senyawa hasil reaksi sitronelal dengan etilen glikol menggunakan katalis asam sulfat serta menentukan pengaruh variasi suhu dan jumlah katalis terhadap hasil reaksi. Reaksi dilakukan menggunakan refluks dengan teknik azeotrop untuk mengurangi jumlah air dalam sistem reaksi. Variasi kondisi reaksi terdiri atas variasi suhu 88ºC, 90ºC, dan 92ºC dan variasi jumlah katalis H2SO4 0,004 mol dan 0,006 mol, jumlah sitronelal yang direaksikan 0,1 mol dan etilen glikol 0,2 mol selama 2 jam. Produk reaksi dipisahkan menggunakan distilasi fraksinasi dan dianalisis menggunakan GC (Gas Chromatography), GC-MS (Gas Chromatography-Mass Spectrometry), dan FTIR (Fourier-Transform Infrared Spectroscopy). Hasil penelitian menunjukkan bahwa produk reaksi antara sitronelal dan etilen glikol menghasilkan sitronelal dioksolana dengan pengotor berupa isopulegol. Suhu refluks terbaik berpengaruh pada pemisahan yang lebih efisien. Sedangkan, semakin banyak jumlah katalis yang ditambahkan, nilai konversi sitronelal bertambah. Suhu terbaik adalah 90ºC dan jumlah katalis H2SO4 terbaik sebanyak 0,006 mol dengan konversi sitronelal dioksolana sebesar 30,88% pada waktu retensi 22,827 dan 21,92% pada waktu retensi 23,488. This study aims to determine the compounds resulting from the reaction of citronellal with ethylene glycol using sulfuric acid as a catalyst and to determine the effect of temperature variations and the amount of catalyst on the reaction results. The reaction is carried out using reflux with an azeotropic technique to reduce the amount of water in the reaction system. Variations in reaction conditions consisted of temperature variations of 88ºC, 90ºC and 92ºC and variations in the amount of catalyst H2SO4 0.004 mol and 0.006 mol, the amount of citronellal reacted was 0.1 mol and ethylene glycol 0.2 mol for 2 hours. The reaction products were separated using fractional distillation and analyzed using GC (Gas Chromatography), GC-MS (Gas Chromatography-Mass Spectrometry), and FTIR (Fourier-Transform Infrared Spectroscopy). The results showed that the reaction product between citronellal and ethylene glycol produced citronellal dioxolane with isopulegol as an impurity. The best reflux temperature has an effect on the effieciency of the separation. Meanwhile, the more amount of catalyst added, the citronellal conversion value increased. The best temperature was 90ºC and the best amount of H2SO4 catalyst was 0.006 mol with a citronellal dioxolane conversion of 30.88% at a retention time of 22.827 and 21.92% at a retention time of 23.488.
| Item Type: | Thesis (S1) |
|---|---|
| Additional Information: | ID SINTA Dosen Pembimbing: R Asep Kadarohman: 5984423 |
| Uncontrolled Keywords: | Asetalisasi, Azeotrop, Katalis Asam Sulfat, Sitronelal, Sitronelal Dioksolana Acetalization, Azeotrope, Citronellal, Citronellal dioxolane, Sulfuric Acid Catalyst |
| 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: | Jihan Nurafifah Hernawan |
| Date Deposited: | 03 Oct 2023 06:10 |
| Last Modified: | 03 Oct 2023 06:10 |
| URI: | http://repository.upi.edu/id/eprint/108490 |
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