Production of diesel-like hydrocarbons via hydrodeoxygenation of palmitic acid over Ni/TS-1 catalyst

Abstract

Hydrodeoxygenation of lipids is a promising method to produce diesel-like hydrocarbons. In this work, NiO/TS-1 and Ni/TS-1 catalysts were synthesized, and the catalytic hydrodeoxygenation of palmitic acid to produce diesel-like hydrocarbons was investigated. The effect of reaction time (2–10 h) and H2 pressure (1–5 MPa) on the production of diesel-like hydrocarbons were also studied in detail. Finally, a possible reaction route was proposed. The results showed that catalytic hydrodeoxygenation performance is affected by the valence of active component Ni. Ni/TS-1 shows better catalytic performance than NiO/TS-1 in terms of palmitic acid conversion and alkanes selectivity. Under the optimal experimental conditions (260 °C, 4 MPa, 10 h, 400 rpm), the palmitic acid conversion and pentadecane selectivity over Ni/TS-1 are 100% and 91.6%, respectively. It is found that hexadecanol is an important intermediate in the hydrodeoxygenation of palmitic acid.