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| Corrosion characteristics and kinetics of copper in biodiesel |
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| KeyWord:Jatropha curcas L. seed oil biodiesel corrosion kinetics |
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| Abstract: |
| The corrosion characteristics and kinetics of copper in mixture of Jatropha curcas L.seed oil biodiesel and diesel were studied by weight loss method at temperatures between room temperature and 90℃. The corresponding model of corrosion kinetics was established. The results showed that the corrosion rate of copper increased with the concentration of biodiesel in mixture increasing and temperature rising. The corrosion regulation followed Mathur empirical formula, the relationship between corrosion rate constant and temperature accorded with Arrhenius equation, and corrosion kinetics equation was v=ke(-3×10-5T2+0.019 6T－2.478 4)c with 7.40 kJ/mol of the activation energy of the corrosion reaction and 0.695 6 of frequency factor. The corrosion kinetics model of copper in biodiesel provided a theoretical basis for expanding the experiment and anti-corrosion in biodiesel application. |
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