Hydrocarbons synthesis from a simulated biosyngas feed over fe/sio2, catalysts

• P UBILLA ^[1] ; R GARCÍA ^[1] ; J.L.G FIERRO ^[2] ; N ESCALONA ^[1]
  1. [1] Universidad de Concepción

     Universidad de Concepción

     Comuna de Concepción, Chile

     
  2. [2] Instituto de Catálisis y Petroleoquímica

     Instituto de Catálisis y Petroleoquímica

     Madrid, España

     
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 55, Nº. 1, 2010, págs. 35-38
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • The Fischer Tropsch reaction, using a simulated gas mixture similar to that obtained from biomass transformation (biosyngas), was studied over Fe/SiO2catalysts. The reaction was carried out in a stainless steel fixed bed reactor at 300 °C and 1 MPa. Excess solvent impregnation was used to prepare the catalysts. Nitrogen adsorption at -196 °C, thermal programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) were used as characterization methods. The highest CO conversion was obtained for the catalyst with Fe-loading of 15wt% whereas it decreased at higher Fe loadings. The decrease ofthe activity is explained in terms ofthe drop ofthe active sites due to the formation of large Femetallic aggregates. The Fe/SiO2 catalysts presented a wide distribution of liquid hydrocarbons (C6 to C 18) and high methane formation. The liquid product distribution was related to the average size of iron particles. The increase of iron particle size favours the formation of hydrocarbons centred in C 11-14 chain length.