Reaksi Deoksigenasi Biodiesel Kelapa Sawit (Elaeis guineensis Jacq) Dengan Katalis Fe/γ-Al2O3

Zahra, Ema Azzah Aulia (2025) Reaksi Deoksigenasi Biodiesel Kelapa Sawit (Elaeis guineensis Jacq) Dengan Katalis Fe/γ-Al2O3. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sustainable Aviation Fuel (SAF) menjadi solusi strategis dalam mengatasi masalah emisi karbon pada sektor penerbangan. Pada penelitian ini telah dilakukan sintesis katalis Fe/γ-Al2O3 dengan metode wetness impregnation dan karakterisasi katalis dengan morfologi, kristalinitas, ukuran kristal, serta gugus fungsi logam dan uji katalis Fe/γ-Al2O3 pada reaksi deoksigenasi biodiesel kelapa sawit. Katalis disintesis melalui metode wetness impregnation dengan variasi loading logam Fe sebesar 2,50; 5,00; 10,00 dan 15,00 wt%. Katalis dikarakterisasi dengan FTIR, XRD dan SEM-EDX. Hasil FTIR menunjukkan vibrasi khas gugus Fe–O pada bilangan gelombang 560–580 cm⁻¹, serta pita vibrasi Al-O 1000–1100 cm⁻¹. Pita tersebut mengindikasikan bahwa fasa logam oksida berhasil terbentuk pada permukaan pendukung. Karakterisasi XRD menunjukkan semakin bertambah loading Fe, maka ukuran kristal semakin besar dan kristanilitas Fe2O3 semakin tinggi yaitu 5,80 nm. Hasil analisis SEM-EDX menunjukkan bahwa semakin besar loading logam Fe, maka permukaan katalis menjadi semakin teratur. Kinerja katalis Fe/γ-Al2O3 pada reaksi deoksigenasi dengan persentase konversi yang ditentukan berdasarkan hasil analisis GC-MS. Reaksi deoksigenasi biodiesel dengan katalis Fe/γ-Al2O3 dilakukan dalam reaktor batch pada suhu 300°C dan tekanan awal H₂ sebesar 5 bar. Peningkatan loading Fe terbukti meningkatkan konversi biodiesel, di mana konversi tertinggi sebesar 76,65% diperoleh dari katalis Fe/γ-Al₂O₃ 15,00 wt%.
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Sustainable Aviation Fuel (SAF) is a strategic solution in overcoming the problem of carbon emissions in the aviation sector. In this study, the synthesis of Fe/γ-Al2O3 catalyst by wetness impregnation method and characterization of the catalyst with morphology, crystallinity, crystal size, as well as metal functional groups and Fe/γ-Al2O3 catalyst test on palm biodiesel deoxygenation reaction have been carried out. The catalyst was synthesized through wetness impregnation method with Fe metal loading variation of 2,50; 5,00; 10,0 and 15,00 wt%. The catalyst was then characterized by FTIR, XRD and SEM-EDX. The FTIR results showed typical vibrations of the Fe-O group at wave numbers 560-580 cm-¹, as well as an Al O vibrational band of 1000-1100 cm-¹. These bands indicate that the metal oxide phase was successfully formed on the support surface. XRD characterization shows that as Fe loading increases, the crystal size increases and the crystallinity of Fe2O3 is higher at 5,80 nm. The results of SEM-EDX analysis show that the greater the loading of Fe metal, the more organized the catalyst surface becomes. The performance of Fe/γ-Al2O3 catalyst in deoxygenation reaction with conversion percentage was determined based on GC-MS analysis results. The biodiesel deoxygenation reaction was carried out in a batch reactor at 300°C and an initial H₂ pressure of 5 bar, using the Fe/γ-Al2O3 catalyst. Increasing Fe loading was shown to increase the biodiesel conversion, where the highest conversion of 76,65% was obtained at 15,00 wt% Fe/γ-Al2O3 catalyst.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Biodiesel, Deoksigenasi, Fe/γ-Al₂O₃, Katalis, Sustainable Aviation Fuel, Deoxygenation, Catalyst
Subjects:	Q Science > QD Chemistry > QD501 Catalysis. Catalysts.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Ema Azzah Aulia Zahra
Date Deposited:	05 Aug 2025 12:46
Last Modified:	05 Aug 2025 12:46
URI:	http://repository.its.ac.id/id/eprint/127596

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