Development of Novel Catalysts for Bio-Fuel Production

Alan E., Pekmezci Karaman B., Çelik Özcan M., Mürtezaoğlu K.

4th Bioenergy Studies Symposium, International Symposium , Ankara, Turkey, 26 - 27 May 2022

  • Publication Type: Conference Paper / Summary Text
  • City: Ankara
  • Country: Turkey
  • Gazi University Affiliated: Yes


The energy need is increasing due to rapid developing technologies and growing population in today's world. Fossil based fuel demand is increasing which results in the increase of the harmful gases causing air pollution.  Bio-fuels are produced as a result of the pyrolysis of biomass. They are acknowledged among clean and renewable energy sources for use as an alternative energy source to fossil-based fuels in motor vehicles. However, one of the biggest problems in biofuel production is carbon deposition during the reactions. Within the scope of this study, catalysts that are resistant to carbon formation and hence will be active for longer periods of time have been developed. Mesoporous gamma alumina support material was synthesized by hydrothermal (EISA) synthesis method and catalyst structure was achieved via wet impregnating zirconium, tantalum and nickel to increase surface acidity. The wide-angle XRD patterns and SEM-EDS analysis of the mesoporous γ−Al2O3 materials indicated an intact preserved structure containing the desired amount of metals. Nitrogen adsorption-desorption isotherms of the synthesized catalysts were found to be compatible with the Type IV isotherm, validating formation of a mesoporous structure according to the IUPAC classification. Active metal-containing mesoporous alumina catalysts were tested in bio-oil-to-biofuel production reactions. The reaction studies were carried out in a continuous flow packed bed reactor system with an ethanol/reactant volumetric ratio of 70/30, using 0.5 g catalyst at 400 oC. The highest bio-fuel selectivities and bio-oil conversions were obtained in the presence of zirconia containing catalysts.  The results of the study showed that the use of mesoporous alumina material in bio-oil-to-biofuel production reactions was promising.

Financial support of TÜBİTAK 219Z232 was gratefully acknowledged.


Keywords: Mesoporous alümina, Active Metals, Bio-fuel, Bio-mass