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Wawan Rustyawan, Speaker at Green Chemistry and Catalysis Conferences
Pertamina, Indonesia
Title : Production of sub-tropical green diesel containing abundant i-C15 & i-C16 from catalytic hydrodeoxygenation-hydroisomerization of used cooking oil using NiMo-Al2O3 and Pt/ZSM-48

Abstract:

Hydrodeoxygenation (HDO) and Hydroisomerization (HI) are applied in fuel processing technology to convert vegetable oil into green diesel which has a fog number and a pour number below °C with a metal- based catalyst. The main challenges for this process are feedstock, catalyst preparation, and the production of oxygen-free diesel fuel. This study aims to synthesize the NiMo catalyst embedded in binary oxide Alumina and ZSM-48 and evaluate its catalytic activity for hydrodeoxygenation and hydroisomerization of used cooking oil (UCO) to green diesel. NiMo/Al2O3 and Pt/ZSM-48 were synthesized by wet impregnation, and UCO hydrodeoxygenation was carried out using a continuous flow reactor. The catalysts were characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDS), and N2 adsorption-desorption isotherm analysis. Gas chromatography analysis - distillation simulation spectrometry (GCSimDist) showed the formation of n-C16 and n-C18 hydrocarbon frameworks resulting from the use of NiMo/Al2O3-P with a selectivity of 98.8% after 16 hours of reaction. The further stages of the HI reaction using Pt/ZSM-48 catalyst reduced n-C18 levels and increased i-C15 and i-C16 levels with selectivity of 88.96% and 95.57%. The NiMo/Al2O3 and Pt/ZSM- 48 catalysts produced oxygen-free green diesel (i-C14-i-C18) enriched with i-C15 & i-C16 hydrocarbons. Both catalysts show promising hydrodeoxygenation & hydroisomerization activities through the hydrodecarboxylation pathway and branched framework arrangement.

Biography:

Wawan Rustyawan, M.Sc. Wawan studied Chemical Engineering at the Institute Technology of Bandung and graduated as M. Sc. in 2018. Today still currently completing his doctoral studies in the same department since 2018 under supervised by Prof. Subagjo. He has worked at Pertamina since 2010, starting his career as a process engineer, in 2016 he moved to Jakarta to become a researcher in the field of catalysts and materials until now. He has more than 30 patents in the field of catalysts and all these patents are commercially implemented in Pertamina refineries. in 2021 he received the Gatra award in the field of technology development

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