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- W2065903921 abstract "Single-component catalysts present opportunities and challenges for upgrading crude algal bio-oil in supercritical water. Herein, we report the coordination of the action of two heterogeneous catalysts to upgrade pretreated algal oil to a hydrocarbon-rich fuel. The activities of several different catalyst mixtures for hydrothermal hydrodeoxygenation and hydrodenitrogenation of pretreated algal oil at 400 °C for 4 h were determined in a batch reactor. The yield of upgraded oil produced using each catalyst mixture ranged from a low of 63.2 wt.% in the Ru/C + Rh/γ-Al2O3-catalyzed reaction to a high of 77.2 wt.% in the Ru/C + Mo2C-catalyzed reaction. Coke production was controlled in the presence of most of the two-component catalyst mixtures under these hydrothermal conditions. All the two-component mixtures exhibited excellent performance with respect to deoxygenation, denitrogenation, and, in particular, desulfurization. Ru/C + Mo2C, Ru/C + Pt/γ-Al2O3, and Ru/C + Pt/C performed best with respect to deoxygenation, denitrogenation, and desulfurization and produced upgraded oils with O, N and S contents of 0.1, 1.8, and 0.065 wt.%, respectively. The upgraded oil produced with Ru/C + Mo2C retained 89.7% of the heating value of the original pretreated oil and contained 98.5% of the material boiling below 450 °C. The upgraded oils consisted mainly of saturated hydrocarbons, which accounted for no less than 40% of the total peak area for the majority of the oils. Thus, we view the two-component catalyst mixture as a promising strategy for upgrading bio-oils derived from microalgae." @default.
- W2065903921 created "2016-06-24" @default.
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- W2065903921 date "2015-05-01" @default.
- W2065903921 modified "2023-09-27" @default.
- W2065903921 title "Catalytic upgrading of pretreated algal oil with a two-component catalyst mixture in supercritical water" @default.
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- W2065903921 doi "https://doi.org/10.1016/j.algal.2015.03.011" @default.
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