Fuel 212 (2018) 309–314 Contents lists available at ScienceDirect Fuel journal homepage: www.elsevier.com/locate/fuel Full Length Article Determination of the biodiesel content in diesel/biodiesel blends by using the near-near-infrared thermal lens spectroscopy a a a a b a, M. Ventura , W.B. Deus , J.R. Silva , L.H.C. Andrade , T. Catunda , S.M. Lima Grupo de Espectroscopia Óptica e Fototérmica, Programa de Pós-Graduação em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul, CP 351 Dourados, MS, Brazil Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: A dual-beam mode-mismatched conﬁguration of the Thermal Lens (TL) technique was applied to characterize Near-near infrared biodiesel, diesel and diesel/biodiesel blends. The excitation was performed using a tunable laser in the near-near Thermal Lens Spectroscopy infrared region in order to assess overtones and combination bands of the vibration modes. The thermo-optical Diesel/biodiesel blends properties of the fuels were also determined. The results showed that the biodiesel contents in diesel/biodiesel Thermal diﬀusivity blends can be monitored with this technique, by excitation the third overtone of the C–H(4ν(C–H)) bond stretching vibration at 916 nm. Both the amplitude of the photothermal
Fuel – Elsevier
Published: Jan 15, 2018
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