Synthesis of waste cooking oil based biodiesel via ferric-manganese promoted molybdenum oxide / zirconia nanoparticle solid acid catalyst: influence of ferric and manganese dopants

J Oleo Sci. 2015;64(5):505-14. doi: 10.5650/jos.ess14228. Epub 2015 Apr 6.


The utilization of ferric-manganese promoted molybdenum oxide/zirconia (Fe-Mn- MoO3/ZrO2) (FMMZ) solid acid catalyst for production of biodiesel was demonstrated. FMMZ is produced through impregnation reaction followed by calcination at 600°C for 3 h. The characterization of FMMZ had been done using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA), temperature programmed desorption of NH3 (TPD-NH3), transmission electron microscopy(TEM) and Brunner-Emmett-Teller (BET) surface area measurement. The effect of waste cooking oil methyl esters (WCOME's) yield on the reactions variables such as reaction temperature, catalyst loading, molar ratio of methanol/oil and reusability were also assessed. The catalyst was used to convert the waste cooking oil into corresponding methyl esters (95.6%±0.15) within 5 h at 200℃ reaction temperature, 600 rpm stirring speed, 1:25 molar ratio of oil to alcohol and 4% w/w catalyst loading. The reported catalyst was successfully recycled in six connective experiments without loss in activity. Moreover, the fuel properties of WCOME's were also reported using ASTM D 6751 methods.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biofuels*
  • Biotechnology / methods*
  • Catalysis
  • Esters
  • Ferric Compounds / chemistry*
  • Hot Temperature
  • Manganese / chemistry
  • Methanol
  • Molybdenum / chemistry*
  • Nanoparticles*
  • Oxides / chemistry*
  • Plant Oils*
  • Time Factors
  • Waste Disposal, Fluid*
  • Zirconium / chemistry*


  • Biofuels
  • Esters
  • Ferric Compounds
  • Oxides
  • Plant Oils
  • Manganese
  • Molybdenum
  • Zirconium
  • zirconium oxide
  • Methanol