Purnomo, Hari (2021) Pengaruh Variasi Template Pada Sintesis Aluminosilikat Sebagai Katalis Pada Reaksi Deoksigenasi Asam Oleat. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Asam oleat merupakan asam lemak tak jenuh tunggal yang dapat digunakan sebagai reaktan untuk menghasilkan bahan bakar. Asam oleat dikonversi menjadi green diesel melalui metode deoksigenasi dengan bantuan katalis aluminosilikat dengan variasi template, yaitu (Ni/ZSM-5 (seed), Ni/ZSM-5 (TPAOH) dan Ni/Al-MCM-41 (tanpa template)). Katalis aluminosilikat dengan variasi template disintesis dengan metode hidrotermal dan impregnasi logam Ni 10% wt. Impregnasi logam Ni 10% wt dikakukan untuk meningkatan aktivitas katalis pada reaksi deoksigenasi. Katalis dikarakterisasi dengan difraksi sinar-X, FTIR dan analisis isoterm adsorpsi-desorpsi nitrogen. Hasil karakterisasi dengan XRD dan FTIR menunjukkan bahwa katalis tersusun oleh fase amorf dan kristalin. Katalis Al-MCM-41 (tanpa template) memiliki luas permukaan mesopori sebesar 260,490 m2/g dan volume mesopori sebesar 0,260 cm3/g, hasil tersebut merupakan nilai optimum dari seluruh katalis yang disintesis. Katalis aluminosilikat diaplikasikan pada reaksi deoksigenasi asam oleat menjadi green diesel. Filtrat hasil reaksi deoksigenasi asam oleat dikarakteriasasi dengan kromatografi gas - spektrometri massa. Hasil uji katalisis menunjukkan bahwa pembentukan green diesel dari reaksi deoksigenasi asam oleat dipengaruhi oleh luas permukaan mesopori dan volume mesopori. Selektivitas katalis dengan variasi template (Ni/ZSM-5 (seed), Ni/ZSM-5 (TPAOH) dan Ni/Al-MCM -41 (tanpa template)) dominan pada range diesel (C11-C17). Yield green diesel tertinggi dicapai oleh katalis Ni/Al-MCM-41, yaitu sebesar 50,02%
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Oleic acid is a mono unsaturated fatty acid which mainly exist in vegetable oil that can be used as a model compound for deoxygenation reaction to produce fuels. Oleic acid is converted to green diesel by deoxygenation method using aluminosilicate as catalysts with template variations, i.e (Ni / ZSM-5 (seed), Ni / ZSM-5 (TPAOH) and Ni / Al-MCM-41 (free-template)). The total weight of the metal loading is 10% wt. 10% wt Ni metal impregnation were used to increase the catalyst activity in the deoxygenation reaction. The catalysts were characterized by X-ray diffraction, FTIR and nitrogen adsorption-desorption isotherm analysis. The results of characterization using XRD and FTIR indicated that the catalyst is composed of amorphous and crystalline phases. The Al-MCM-41 (free-template) catalyst had a mesoporous surface area of 260,490 m2 / g and a mesoporous volume of 0.260 cm3 / g, these results are the optimum value of all the catalysts synthesized. Aluminosilicate catalysts were applied in the deoxygenation reaction of oleic acid to green diesel. The filtrates resulting from the oleic acid deoxygenation reaction were characterized by gas chromatography - mass spectrometry. The results of the catalysis test show that the formation of green diesel from the deoxygenation reaction of oleic acid were influenced by the surface area of mesoporous and mesoporous volumes. The catalyst selectivity with template variations (Ni / ZSM-5 (seed), Ni / ZSM-5 (TPAOH) and Ni / Al-MCM-41 (free-template)) were dominant in the diesel range (C11-C17). The highest green diesel yield was achieved by Ni / Al-MCM-41 (free-template) catalyst, 50.02%.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Asam oleat, bahan bakar, green diesel, template, deoksigenasi. Oleic acid, fuels, green diesel, templates, deoxygenation |
| Subjects: | Q Science > QD Chemistry > QD501 Catalysis. Catalysts. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | Hari Purnomo |
| Date Deposited: | 11 Mar 2021 00:55 |
| Last Modified: | 11 Mar 2021 00:55 |
| URI: | http://repository.its.ac.id/id/eprint/84086 |
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