Hydrodeoxygenation of fatty acid over La-modified HZSM5 for premium quality renewable diesel production

I. Nur Azreena and H.L.N. Lau and N. Asikin-Mijan and M.A. Hassan and S. Mohd Izham and M. Safa Gamal and Wan Nor Adira Wan Khalit and Mahashanon Arumugam and E. Kennedy and M. Stockenhuber and Yap, Taufiq Yun Hin (2022) Hydrodeoxygenation of fatty acid over La-modified HZSM5 for premium quality renewable diesel production. Journal of Analytical and Applied Pyrolysis, 161. pp. 1-13. ISSN 0165-2370

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Abstract

In the present study, a series of La-HZSM5 catalysts were prepared through wet impregnation and investigated for the production of premium quality diesel fuel via hydrodeoxygenation (HDO) of oleic acid (OA). Several parameters were evaluated, such as reaction temperature (360–400 ◦C), H2 pressure (1–5 MPa), La concentration (5–20%), catalyst loading (1–7 wt%), and reaction time (1–4 h). At a reaction of 400 ◦C for 2 h under 5 MPa H2 pressure, the La(10)HZSM5(90) catalyst showed 97% hydrocarbon yield with 92% of diesel selectivity. The superior HDO activity by La(10)HZSM5(90) in producing high quality diesel is due to a sufficient number of weak + medium acid sites and its mesoporous structure. Vacuum distillation was complementary for producing high quality diesel fractions consisting of C17 fractions. The reusability of the La(10)HZSM5(90) catalyst was also demonstrated, though the catalyst still had coking activity.

Item Type:	Article
Keyword:	Biofuel, Catalysts, Diesel, Hydrocarbon, Oleic acid, HZSM5
Subjects:	Q Science > QD Chemistry > QD1-999 Chemistry > QD450-801 Physical and theoretical chemistry T Technology > TP Chemical technology > TP1-1185 Chemical technology > TP315-360 Fuel
Department:	FACULTY > Faculty of Science and Natural Resources
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	10 Jun 2025 11:38
Last Modified:	10 Jun 2025 11:38
URI:	https://eprints.ums.edu.my/id/eprint/43995

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