Abstract
Hydrotreatment of heteroatomic model compounds in microalgae-based bio-oils into diesel-like hydrocarbons was carried out over carbon nanotubes (CNTs)-supported β-Mo2C catalyst with superior activity and selectivity under a mild condition (≤200°C). The results show that stearic acid and hexadecanamide can be completely converted into n-C15–C18 alkanes over β-Mo2C/CNTs catalyst. The β-Mo2C/CNTs favors the pathway of hydrogenation–dehydration–hydrogenation to produce n-octadecane with an optimal yield of 91.24% at a lower temperature of 180°C during hydrotreating process of stearic acid. The recycle tests demonstrate that the β-Mo2C/CNTs exhibits excellent stability, and can be reused for seven times consecutively without reduction of catalytic stability. Based on the determined products, a brief reaction pathway is proposed. Therefore, a novel approach to produce diesel-like hydrocarbons via catalytic hydrotreatment of microalgae-based bio-oils over β-Mo2C/CNTs is introduced, which provides a basic research as well as technical parameters for its further industrialization.
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