Catalysis Letters

, Volume 146, Issue 11, pp 2381–2391 | Cite as

Preparation of Ni/biochar Catalyst for Hydrotreating of Bio-Oil from Microalgae Biomass

  • Hong K. D. Nguyen
  • Vuong V. Pham
  • Hai T. Do


A new catalyst for hydrotreating process mainly including hydrodeoxygenation (HDO) and hydrodenitrogenation (HDN) was prepared by introducing Ni onto the surface of biochar obtained from microalgae biomass pyrolysis. The co-product bio-oil obtained from the pyrolysis was treated under H2 pressure on the as-synthesized Ni/biochar catalyst. The whole process was established in a close loop cycle illustrating its high efficiency in comparison to other HDO or HDN processes. The catalyst was prepared through two-step procedure including biochar production and impregnating of Ni precursor onto the biochar. The pyrolysis of microalgal biomass was established at 400 °C for 2 h producing mainly the biochar and the bio-oil. The biochar was then doped with Ni2+ by incipient wetness impregnation followed by drying and calcination at suitable temperature for a certain time. The upgrading process including hydrodeoxygenation (HDO) and hydrodenitrogenation (HDN) reactions of bio-oil obtained from microalgal pyrolysis was investigated at various parameters such as temperature, time, catalyst dosage and stirring speed for converting bio-oil obtained from microalgal pyrolysis to rich hydrocarbon product. The Ni/biochar catalyst synthesized from the biochar through impregnation was used in the upgrading process. The results showed that the Ni/biochar catalyst could be very effective in the upgrading process producing mainly n-heptadecane as a very important component of diesel fuel. Some techniques were applied for characterizing the catalyst, feedstock and product such as XRD, H2-TPR, GC-MS and some standard ASTM methods.

Graphical Abstract


Biochar Bio-oil Upgrading Microalgae Ni/biochar 


  1. 1.
    Donnis B, Egeberg RG, Blom P, Knudsen KG (2009) Hydroprocessing of bio-oils and oxygenates to hydrocarbons. Understanding the reaction routes. Top Catal 52:229–240CrossRefGoogle Scholar
  2. 2.
    Mortensen PM, Grunwaldt J-D, Jensen PA, Knudsen KG, Jensen AD (2011) A review of catalytic upgrading of bio-oil to engine fuels. Appl Catal A Gen 407:1–19CrossRefGoogle Scholar
  3. 3.
    Carlson TR, Tompsett GA, Conner WC, Huber GW (2009) Aromatic production from catalytic fast pyrolysis of biomass-derived feedstocks. Top Catal 52:241–252CrossRefGoogle Scholar
  4. 4.
    Yingxin L, Jixiang C, Jiyan Z (2007) Effects of the supports on activity of supported nickel catalysts for hydrogenation of m-dinitrobenzene to m-phenylenediamine. Chin J Chem Eng 15(1):63–67CrossRefGoogle Scholar
  5. 5.
    Lia XF, Luo XG (2014) Preparation of mesoporous activated carbon supported Ni catalyst for deoxygenation of stearic acid into hydrocarbons. Environ Prog Sustain Energy 0:1–6Google Scholar
  6. 6.
    Özkan G, Gök S, Özkan G (2011) Active carbon-supported Ni, Ni/Cu and Ni/Cu/Pd catalyzed steam reforming of ethanol for the production of hydrogen. Chem Eng J 171:1270–1275CrossRefGoogle Scholar
  7. 7.
    Barakat A, Al-Noaimi M, Suleiman M, Aldwayyan AS, Hammouti B, Hadda TB, Haddad SF, Boshaala A, Warad I (2013) One step synthesis of NiO nanoparticles via solid-state thermal decomposition at low-temperature of novel aqua(2,9-dimethyl-1,10-phenanthroline)NiCl2 complex. Int J Mol Sci 14:23941–23954CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Hong K. D. Nguyen
    • 1
  • Vuong V. Pham
    • 2
  • Hai T. Do
    • 3
  1. 1.Hanoi University of Science and TechnologyHanoiVietnam
  2. 2.Vietnam Oil and Gas GroupHanoiVietnam
  3. 3.Vietnam Institute of Industrial ChemistryHanoiVietnam

Personalised recommendations