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All Journal International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis
Dahnum, Deliana
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Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering

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Synthesize and Characterization of Pt-supported Co-ZIF for Catalytic Hydrocracking and Hydroisomerization of n-Hexadecane Hidayati, Luthfiana Nurul; Aulia, Fauzan; Napitupulu, Sebastian Ulido; Adhyaksa, Gede Widia Pratama; Dahnum, Deliana
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 1 Year 2024 (April 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20117

Abstract

Zeolitic Imidazole Frameworks (ZIFs) are prospective porous materials as catalyst support due to their relatively large surface area, and tunability in size, structure, and porosity. Recent studies have also shown that ZIF is the best candidate for various catalytic redox reactions such as the oxidation of benzyl aromatic hydrocarbons. In this study, the synthesized Pt catalyst supported on Co-ZIF was varied by the organic ligands: imidazole, benzimidazole, and 1-(3-aminopropyl) imidazole, then followed by impregnation of Pt precursor. The catalysts were characterized its physical and chemicals properties such as Fourier Transform Infrared (FTIR), X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), and Brunauer Emmet Teller (BET), Temperature-Programmed Desorption (NH3-TPD and CO2-TPD). The prepared catalysts were evaluated for catalytic hydrocracking and hydroisomerization of n-hexadecane in a 100 ml-batch reactor. GC-MS analysis presented that the Pt/ZIF catalyst with imidazole ligands has better performance than others. Hence, the optimization of n-Hexadecane conversion was carried out by the Pt/ZIF-imidazole catalyst varying the amount of metal loading, time and temperature reaction. The results showed that the reaction temperature of 350 ºC using 20 bar H2 for 4 h and the addition of 15 wt% Pt successfully achieved 90.77% conversion and produced the highest yield of isomers and alkanes, 4.04% and 35.75%, respectively. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Catalytic Hydroconversion of Lauric Acid Over Poly(N-vinyl-2-pyrrolidone)-Coated Pd Nanoparticles on ZIF-8 Dahnum, Deliana; Ramadhita, Holanda; Andreas, Andreas; Prasetyo, Joni; Bakti, Aditia Nur; Dang, Huyen Tran
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 1 Year 2024 (April 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20114

Abstract

A subclass of Metal-Organic Frameworks, Zeolitic Imidazole Frameworks-8 (ZIF-8) is known as an emerging material that has the characteristic of a large surface area, good thermal stability as well as a high porosity. Instead of having extraordinary properties, ZIF-8 consists of Lewis acid and Lewis base site on its Zn metals and 2-methylimidazole which are the important components for the catalyst. In this study, Pd-Poly(N-vinyl-2-pyrrolidone) coated on ZIF-8 (Pd-PVP@ZIF-8) was synthesized by mixed Pd-PVP solution and ZIF-8 precursors at room temperature. The Pd-PVP solution was varied from 10 to 50 ml to differentiate the Pd concentration in ZIF-8. As-synthesized 50 ml of Pd-PVP on ZIF-8 (50Pd-PVP@ZIF-8) showed catalytic activity in the conversion of 98.6% lauric acid to produce 78.2% of 1-dodecanol at optimum condition 320 °C for 6 h. The synergy between Pd-PVP as metal and ZIF-8 as metal support as well as high dispersion of Pd particles could enhance performance in the conversion of lauric acid. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Characterization of zirconia sulfate catalyst for sustainable aviation fuel from waste cooking oil Widasgantri, Treisnaning; Widjaja, Tri; Dahnum, Deliana; Altway, Ali; Lamhotmatua, Thasya; Antonius, Kevin
International Journal of Renewable Energy Development Vol 15, No 3 (2026): May 2026
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.62076

Abstract

The growing accumulation of waste cooking oil (WCO) in Indonesia presents serious environmental concerns while offering potential as a renewable feedstock for sustainable aviation fuel. This study evaluates the conversion of WCO into bio-jet fuel via pyrolytic catalytic cracking (PCC) using cobalt-dispersed sulfated zirconia (Co/ZrO₂–SO₄, Co/SZ) catalysts under atmospheric pressure. Sulfated zirconia was synthesized hydrothermally and impregnated with 1, 3, and 5 wt% cobalt. Catalyst characterization by FTIR, XRD, BET, and SEM–EDX confirmed successful cobalt dispersion, preservation of the monoclinic ZrO₂ phase, and increasing surface area with higher cobalt loading (83.93 to 111.19 m² g⁻¹). Catalytic performance was tested in a fixed-bed reactor at 400, 430, and 460 °C with a feed-to-catalyst ratio of 100:1. GC–MS analysis revealed that both temperature and cobalt loading significantly influenced selectivity toward the jet fuel fraction (C₁₂–C₁₆). The highest bio-jet fuel selectivity (68.63%) and yield (57.46 wt%) were obtained using 5 wt% Co/SZ at 400°C. At 430 °C, excessive secondary cracking reduced selectivity to 27.78% for 3 wt% Co/SZ, with gasoline-range products reaching 62.70%. Increasing the temperature to 460 °C partially restored jet-range selectivity to 62.67% for 5 wt% Co/SZ due to enhanced isomerization and aromatization reactions. Reusability tests indicated gradual catalyst deactivation caused by coke deposition and loss of acid sites. These results demonstrate that the synergistic interaction between sulfated zirconia acidity and cobalt’s deoxygenation functionality enables efficient WCO conversion into bio-jet fuel, highlighting Co/SZ as a promising catalyst for sustainable aviation fuel production.
Co-Authors Adhyaksa, Gede Widia Pratama Aditia Nur Bakti Ali Altway Andreas Andreas Antonius, Kevin Dang, Huyen Tran Fauzan Aulia Joni Prasetyo, Joni Lamhotmatua, Thasya Luthfiana Nurul Hidayati, Luthfiana Nurul Napitupulu, Sebastian Ulido Ramadhita, Holanda Tri Widjaja Widasgantri, Treisnaning