Hydrodeoxygenation of methyl laurate over the sulfur-free Ni/γ-Al2O3 catalysts

• Published in: Applied catalysis. A, General General, 2019-01, Vol.569, p.35-44
• Main Authors: Chen, Shuang, Zhou, Guilin, Xie, Hongmei, Jiao, Zhaojie, Zhang, Xianming
• Format: Article
• Language: English
• Subjects: Catalytic hydrogenation; Hydrodeoxygenation (HDO); Methyl laurate; Ni/γ-Al2O3 catalysts
• ISSN: 0926-860X; 1873-3875
• DOI: 10.1016/j.apcata.2018.10.014

[Display omitted] •Developed mesoporous structure and highly dispersed Ni are more favorable for hydrodeoxygenation.•Sulfur-free Ni/γ-Al2O3 catalyst has superior methyl laurate hydrodeoxygenation performance.•The methyl laurate is mainly decarbonylation/decarboxylation to produce C11 alkane with high selectivity.•The used Ni/γ-Al2O3 catalyst retains good regeneration properties. A series of sulfur-free Ni/γ-Al2O3 catalysts with different metal Ni loading amount were prepared by impregnation method. The prepared catalysts and corresponding precursors were investigated through XRD, BET, H2-TPD, and H2-TPR analysis methods. The effect of Ni loading on catalytic performance of Ni/γ-Al2O3 catalysts was evaluated by methyl laurate catalytic hydrodeoxygenation (HDO). Results indicate that the catalytic HDO performance of the prepared Ni/γ-Al2O3 catalysts was directly related to hydrogen storage properties, hydrogen desorption properties, dispersion of the active component Ni, and so on. The 10 wt.% Ni/γ-Al2O3 catalyst exhibits the best HDO performance, and the methyl laurate conversion can reach 91.1% when the reaction temperature is 400 °C and pressure is 2 MPa. The HDO products are alkanes, such as C