Kinetics for the highly selective hybrid and cleaner diesel production by hydro-co-processing of a Jatropha curcas L. oil and gas oil blend using a supported Ni-W/Al-SBA-15 sulfided catalyst

ABSTRACT

This work reports the kinetics for the hydro-co-processing of a Jatropha curcas L. oil and gas oil mixture using a sulfided NiO(5.5%)-WO₃(25%)/Al(0.05)-SBA-15 catalyst at 360–420°C, 6 MPa of initial H₂ pressure, and 4 h of reaction time. It was found that more than 47% of a diesel-like fraction could be obtained due to the HDO of the vegetable oil, and the HDS and HCK of the sulfured and heavier compounds in the gas oil within the mixture. HDO was the most favored reaction, followed by HDS and HCK due to HDO rates were two times higher than those for HDS, demonstrating that oxygen removal was influenced by H₂S production during HDS. Accordingly, 96% of the oxygen compounds and 24% of the sulfured compounds were removed during hydro-co-processing. Finally, the intrinsic properties (acidity and metallic character) influenced HCK reactions due to 52.9% of the heavier fraction in the reaction mixture was readily hydroconverted into lighter hydrocarbons. Hence, lighter, cleaner and hybrid fuels can be obtained by hydro-co-processing technologies with the sulfided NiO(5.5%)-WO₃(25%)/Al(0.05)-SBA-15 catalyst at reaction temperatures below 400°C to avoid thermal cracking.

KEYWORDS:

• HDO
• HDS
• hybrid diesel
• Nickel tungstate
• kinetic parameters

Acknowledgements

Authors also acknowledge to the Nanosciences and Micro and Nano Technologies Center, CNMN, for data acquisition experiments for FTIR, NMR, ESI-MS, and RAMAN experiments.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Supplementary material

Supplemental data for this article can be accessed online at https://doi.org/10.1080/15567036.2024.2377704

Additional information

Funding

This work was supported by the National Council of Humanities, Science and Technology (CONAHCYT), and the BEIFI program of the National Polytechnique Institute by the doctoral research grant given to Jonatan R. Restrepo-Garcia.

Notes on contributors

Jonatan R. Restrepo-Garcia

Jonatan R. Restrepo-Garcia obtained his PhD in Energy from the National Polytechinique Institute (2024) and his Master degree in Chemical Engineering from the Industrial University of Santander (2015), his research interests relie on hydroconversion, advanced kinetics and nanotechnology for catalytic processes.

Pablo Torres-Mancera

Pablo Torres-Mancera is a well-know researcher in the field of petrochemistry and heterogeneos catalysis from the Mexican Petroleum Institute (IMP). He obtained his PhD degree from the National Autonomous University of Mexico (UNAM) contributing in the faculty of Chemistry.

Ignacio Elizalde-Martínez

Ignacio Elizalde-Martínez is well-known researcher and Professor from the National Polytechinique Institute (IPN). His main contributions relies on the field of reaction engineering, advanced kinetics and catalysis for hydroprocessing technologies and contaminants remotion. He also obtained his PhD degree from the National Autonomous University of Mexico (UNAM).