Kurniawan, Brigyta (2025) Konversi Produk Cair Hasil Pirolisis Aspal Buton Melalui Reaksi Katalisis Menggunakan CaCO3 yang Diimpregnasi dengan Logam Ni, La, dan Ni-La Dengan Metode Hidrotermal. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian ini bertujuan untuk mengetahui karakteristik dan pengaruh impregnasi logam aktif Ni, La, dan Ni-La pada residu padat hasil pyrolisis aspal Buton (RA) serta aktivitasnya dalam reaksi katalisis produk cair hasil pirolisis aspal Buton.Variasi impregnasi logam dalam residu padat hasil pirolisis aspal Buton sebagai media dilakukan melalui perlakuan hidrotermal, pengeringan, dan kalsinasi. Katalis yang telah disintesis dikarakterisasi menggunakan menggunakan X-ray Diffraction (XRD), Fourier Transform Infared (FTIR), Field Emission Scanning Electron Microscope-Energy Dispersive X-ray (FESEM-EDX), N2 Adsorpsi desorpsi untuk menganalisis struktur kristal, gugus fungsi, morfologi, serta luas permukaan. Hasil penelitian menunjukkan bahwa katalis Ni-La/RA memiliki kinerja terbaik dalam mengurangi kadar oksigen dalam minyak pirolisis, dengan sinergi antara Ni sebagai logam aktif dan La sebagai promotor yang meningkatkan penyebaran partikel Ni dan memperbaiki kestabilan termal katalis. Penggunaan CaCO₃ dari residu aspal sebagai agen basa heterogen juga turut mendukung efisiensi reaksi katalisis dan mengurangi pembentukan senyawa asam dalam produk bahan bakar minyak. Selain karakterisasi struktural dan kimia, analisis terhadap sifat fisik produk cair juga menunjukkan bahwa penggunaan katalis Ni-La/RA memberikan peningkatan kualitas bahan bakar baik dari segi nilai kalor, densitas, dan kadar belerang. Penelitian ini menyimpulkan bahwa katalis Ni-La/RA berbasis residu aspal Buton memiliki potensi besar dalam meningkatkan kualitas bahan bakar cair dari pirolisis aspal dan dapat menjadi alternatif yang lebih efisien, berkelanjutan, dan ramah lingkungan untuk proses konversi energi terbarukan.
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This research aims to examine the characteristics and influence of active metal impregnation using Ni/RA, La/RA, and Ni-La/RA catalysts, as well as their catalytic activity in the catalytic pyrolysis of Buton asphalt-derived oil. The metal catalyst variations were synthesized using solid residues from Buton asphalt pyrolysis as a support material through metal impregnation, hydrothermal treatment, drying, and calcination processes. The synthesized catalysts were characterized using X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR), Field Emission Scanning Electron Microscope–Energy Dispersive X-ray (FESEM-EDX), and N₂ adsorption-desorption to analyze their crystal structures, functional groups, surface morphology, and surface area. The results revealed that the Ni-La/RA catalyst exhibited the best performance in reducing oxygen content in pyrolysis oil, due to the synergistic interaction between Ni as the active metal and La as a promoter, which enhanced Ni particle dispersion and improved the thermal stability of the catalyst. Furthermore, the use of CaCO₃ from asphalt residue as a heterogeneous basic agent contributed to higher catalytic efficiency and reduced the formation of acidic compounds in the fuel product. In addition to structural and chemical analysis, evaluation of the physical properties of the liquid product also indicated that the Ni-La/RA catalyst improved fuel quality in terms of higher calorific value, lower density, and reduced sulfur content. Overall, this study concludes that the Ni-La/RA catalyst derived from Buton asphalt residue has great potential to improve the quality of liquid fuel from asphalt pyrolysis and can serve as a more efficient, sustainable, and environmentally friendly alternative for renewable energy conversion processes.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Aspal Buton, Hidrotermal, Katalis, Pirolisis, Residu Aspal Buton asphalt, Hydrothermal, Catalyst, Pyrolysis, Asphalt residue |
| Subjects: | Q Science > QD Chemistry > QD75.2 Chemistry, Analytic |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | Brigyta Savariell Kurniawan |
| Date Deposited: | 05 Aug 2025 01:12 |
| Last Modified: | 05 Aug 2025 01:12 |
| URI: | http://repository.its.ac.id/id/eprint/127196 |
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