Determination of the biodiesel content in diesel/biodiesel blends by using the near-near-infrared thermal lens spectroscopy
| Autor: | W.B. Deus, M. Ventura, Tomaz Catunda, J.R. Silva, L.H.C. Andrade, Sandro Marcio Lima |
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| Rok vydání: | 2018 |
| Předmět: |
Biodiesel
Materials science Infrared 020209 energy General Chemical Engineering Overtone ÓLEO DIESEL Organic Chemistry Near-infrared spectroscopy Analytical chemistry Energy Engineering and Power Technology 02 engineering and technology 021001 nanoscience & nanotechnology Thermal diffusivity Diesel fuel Fuel Technology Thermal 0202 electrical engineering electronic engineering information engineering 0210 nano-technology Spectroscopy |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 0016-2361 |
| Popis: | A dual-beam mode-mismatched configuration of the Thermal Lens (TL) technique was applied to characterize biodiesel, diesel and diesel/biodiesel blends. The excitation was performed using a tunable laser in the near-near infrared region in order to assess overtones and combination bands of the vibration modes. The thermo-optical properties of the fuels were also determined. The results showed that the biodiesel contents in diesel/biodiesel 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 signal and thermal diffusivity are important parameters to quantify the biodiesel content in diesel/biodiesel blends. |
| Databáze: | OpenAIRE |
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