Sintesis MIL-125(Ti) Dan TiO2 Berpori Sebagai Fotokatalis Untuk Produksi Metil Ester Dari Asam Oleat

Putri, Eka Bela Cahya (2026) Sintesis MIL-125(Ti) Dan TiO2 Berpori Sebagai Fotokatalis Untuk Produksi Metil Ester Dari Asam Oleat. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5004221065-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (12MB) | Request a copy

Abstract

Ketergantungan dunia pada bahan bakar fosil serta peningkatan emisi gas rumah kaca mendorong pengembangan sumber energi alternatif yang lebih ramah lingkungan, salah satunya biodiesel. Produksi biodiesel melibatkan pembentukan metil ester melalui reaksi esterifikasi antara asam lemak bebas dan metanol dengan bantuan katalis. Penggunaan fotokatalis heterogen menjadi salah satu pendekatan yang menjanjikan untuk meningkatkan efisiensi produksi biodiesel. Pada penelitian ini, MIL-125(Ti) disintesis menggunakan metode solvotermal, dan TiO2 diperoleh melalui proses kalsinasi MIL-125(Ti). Material yang diperoleh dilakukan karakterisasi menggunakan XRD, FTIR, SEM-EDX, adsorpsi-desorpsi N2, dan UV-VIS DRS untuk mengetahui kristanilitas, struktur material, morfologi permukaan, komposisi unsur, sifat optik, serta energi celah pita. Aktivitas fotokatalis dievaluasi melalui reaksi esterifikasi fotokatalitik antara asam oleat dan metanol dengan variasi massa katalis, rasio reaktan, suhu, dan waktu reaksi. Hasil pengujian menunjukkan bahwa katalis TiO2 hasil kalsinasi MIL-125(Ti) memberikan aktivitas fotokatalitik terbaik pada waktu reaksi 2 jam, dengan konversi Free Fatty Acid (FFA) sebesar 69,14% dan selektivitas metil ester sebesar 21,21% berdasarkan analisis GC-MS. Hasil tersebut menunjukkan bahwa TiO2 hasil kalsinasi MIL-125(Ti) berpotensi digunakan sebagai fotokatalis dalam produksi metil ester dari asam oleat. =======================================================================================================================================
The world's dependence on fossil fuels and the increase in greenhouse gas emissions are driving the development of more environmentally friendly alternative energy sources, one of which is biodiesel. Biodiesel production involves the formation of methyl esters through an esterification reaction between free fatty acids and methanol with the aid of a catalyst. The use of heterogeneous photocatalysts has become a promising approach to improving biodiesel production efficiency. In this study, MIL-125(Ti) was synthesized using a solvothermal method, and TiO2 was obtained through the calcination of MIL-125(Ti). The obtained materials were characterized using XRD, FTIR, SEM-EDX, adsorption-desorption N2, and UV-VIS DRS to determine the crystallinity, material structure, surface morphology, elemental composition, optical properties, and band gap energy. The photocatalyst activity was evaluated through the photocatalytic esterification reaction between oleic acid and methanol with variations in catalyst mass, reactant ratio, temperature, and reaction time. The test results show that TiO2 catalyst derived from the calcination of MIL-125(Ti) exhibits the best photocatalytic activity at a reaction time of 2 hours, with an Free Fatty Acid (FFA) conversion of 69.14% and methyl ester selectivity of 21.21% based on GC-MS analysis. These results indicate that TiO2 from the calcination of MIL-125(Ti) has potential to be used as a photocatalyst in the production of methyl esters from oleic acid.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Asam Oleat, Fotokatalis, Metil Ester, MIL-125(Ti), TiO2, Oleic acid, Photocatalyst, Methyl Ester.
Subjects:	Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD501 Catalysis. Catalysts. Q Science > QD Chemistry > QD716 Photocatalysis.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Eka Bela Cahya Putri
Date Deposited:	04 Aug 2026 05:39
Last Modified:	04 Aug 2026 05:39
URI:	http://repository.its.ac.id/id/eprint/143108

Actions (login required)

View Item