کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5431714 | 1508822 | 2017 | 14 صفحه PDF | دانلود رایگان |
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 â 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 (â¼1.5 nm with XRD, and â¼0.46 nm with HRTEM), fringe length (â¼2.5-4 nm with XRD, and â¼0.9 nm with HRTEM), median fringe tortuosity (â¼1.1), mean primary particles diameter (â¼25 nm), and fractal dimension (â¼2.3) 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.
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Journal: Carbon - Volume 125, December 2017, Pages 516-529