Avances en Ciencias e Ingeniería (Jan 2013)

PREDICCION DE PROPIEDADES DE MEZCLAS GASOLINA-ETANOL MEDIANTE ESPECTROSCOPIA DE INFRARROJO

  • Felipe Sánchez-Minero,
  • Edgar Ramirez-Jimenez,
  • Guadalupe Silva-Oliver,
  • Berenice Hernandez-Castillejos

Journal volume & issue
Vol. 4, no. 2
pp. 23 – 30

Abstract

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The effect of ethanol in the gasoline reformulation was studied by infrared spectroscopy (IR). Six samples with different ethanol content were prepared (0, 20, 40, 60, 80 and 100 volume percent). IR spectra of these blends were achieved in the region from 4000 to 850 cm -1. Then, a characteristic factor of ethanol (F CO) was obtained. This factor relates the area under the curve at 1050 cm -1 and the total area of the spectrum. The FCO factor was used to propose models for the prediction of properties of gasoline-ethanol blends as octane number, heat value and vapor pressure. In general, results shows a high degree of adjustment for the proposed models (R 2>0.98) with residual values for octane number, heat value and vapor pressure of -0.92/+0.75 octanes, -87.4/+107.6 Kcal/Kg and -2.67/+3.09 KPa, respectively.