Oxidation reactivity and nanostructural characterization of the soot coming from farnesane - A novel diesel fuel derived from sugar cane

Thermogravimetric analysis (TGA), X-Ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy (RS) and High-resolution transmission electron microscopy (HRTEM) techniques were used to characterize soot gathered from a conventional automotive diesel engine fueled by ul...

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Bibliographic Details
Published in:Carbon (New York) 2017-12, Vol.125, p.516-529
Main Authors: Soriano, José A., Agudelo, John R., López, Andrés F., Armas, Octavio
Format: Article
Language:English
Subjects:
Aliphatic compounds
Automotive engines
Automotive fuels
Biodiesel fuels
Diesel engines
Diesel fuels
Diffraction
Electron microscopy
Fourier transforms
Functional groups
Infrared analysis
Infrared spectroscopy
Microscopy
Oxidation
Soot
Sugarcane
Thermogravimetric analysis
Tortuosity
X-ray diffraction
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Summary:Thermogravimetric analysis (TGA), X-Ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy (RS) and High-resolution transmission electron microscopy (HRTEM) techniques were used to characterize soot gathered from a conventional automotive diesel engine fueled by ultra-low sulfur diesel, gas-to-liquid (GTL), biodiesel, and a diesel fuel derived from sugar cane named farnesane. Soot oxidation reactivity, volatile organic fraction, and active surface area (determined with TGA) followed the order: biodiesel >> GTL > farnesane ≅ diesel. Among all soot samples, biodiesel exhibited the highest FTIR absorption peaks for oxygenated and aliphatic functional groups. The degree of disorder of graphene layers (RS analysis bands), fringe interspace distance (∼1.5 nm with XRD, and ∼0.46 nm with HRTEM), fringe length (∼2.5–4 nm with XRD, and ∼0.9 nm with HRTEM), median fringe tortuosity (∼1.1), mean primary particles diameter (∼25 nm), and fractal dimension (∼2.3) were similar for all soot samples. HRTEM images revealed a marked difference in the burning pattern for biodiesel soot in comparison with the other soot samples. Given the results of this work, under the specific engine test condition and engine configuration, farnesane fuel seems so far to be a promising renewable paraffinic fuel for current diesel engines. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2017.09.090