Oleic acid hydrodeoxygenation to biogasoline under mild conditions over non-sulfided transition metal/HZSM-5 catalysts

Biogasoline, a renewable fuel derived from biomass such as palm oil, can be enhanced through hydrodeoxygenation (HDO) reactions, which reduce the oxygen content of the feedstock. Bifunctional catalysts combining metallic sites with zeolitic supports exhibit superior HDO performance. In this study, non-sulfided bifunctional catalysts were synthesized via the impregnation method by loading transition metals onto HZSM-5 zeolites with varying SiO2/Al2O3 ratios. Copper (Cu), iron (Fe), and nickel (Ni) were impregnated at nominal metal loding 8 wt% on HZSM-5 supports, denoted as M/HZ(x). The catalysts were evaluated for the HDO of oleic acid in a semi-flow reactor under mild conditions at 320 °C, atmospheric pressure, with a continuous hydrogen flow (20 mL min−1) for 2 h. The Ni/HZ(371) catalyst achieved the highest biogasoline selectivity, attributed to its high metallic phase, moderate acidity, high surface area, and pore volume. Excellent conversion of oleic acid was achieved with all catalysts. Product analysis of PIONA (paraffins, isoparaffins, olefins, naphthenes, and aromatics) revealed that olefins were the dominant components in the biogasoline fraction for all catalysts.

Text 125893.pdf - Published Version Restricted to Repository staff only Download (12MB) Official URL or Download Paper: https://linkinghub.elsevier.com/retrieve/pii/S0961...

Actions (login required)

View Item