ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Improving sulfur and oxygen removal during the hydro-coprocessing of vegetable oil and gas oil blend to get hybrid diesel using different metallic content sulfided NiO-WO₃ catalysts

Jonatan R. Restrepo-Garcia, Patricia Rayo, Pablo Torres-Mancera, and Ignacio Elizalde-Martínez

Centro Mexicano Para La Producción Más Limpia (CMP+L), Instituto Politécnico Nacional, Mexico City, Mexico

E-mail: jrestrepo@ipn.mx

Received: 17 June 2025  Accepted: 17 December 2025

Abstract:

This research reports the hydro-coprocessing of a 20 vol.% of Jatropha curcas L. oil and gas oil blend using three sulfided Ni-W/Al(0.05)-SBA-15 catalysts with different total (NiO + WO₃) metallic active phases content (21.5, 24.5, and 30.5 wt.%). At moderate reactions conditions (360 °C, 6 MPa of H₂ initial pressure, 1 g of catalyst, and 4 h of reaction time), increasing the overall metallic content to the highest point (30.5%) improved sulfur removal (25%) and oxygen removal (87.1%) reactions due to the occurrence of less stacked layers of sulfided phases with higher dispersion as observed by STEM. On the other hand, the hybrid diesel yield was about 49.3% as a result of all catalysts evidenced mostly tetrahedral Al coordination as shown in ²⁷Al-MAS-NMR spectra. Therefore, the main changes in the liquid product distribution were ascribed to the hydrocarbon formation via enhanced HDO of triglycerides and fatty acids by increasing the metallic content and as it was evidenced by FTIR and ESI–MS spectra.

Graphical Abstract

Keywords: Hydrotreating; Al-SBA-15; NiWO4; Sulfides; Vegetable oil blends; Hybrid diesel

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-025-04608-1

Chemical Papers 80 (5) 5031–5043 (2026)