Abstract
This work reports the synthesis and evaluation of barakol tailored to become biodiesel fluorescent markers. Fluorescent markers for biodiesel fuels were synthesized from the reaction between barakol, which was obtained from the leaves and flowers ofCassia siameLamk., with acid chloride in the presence of triethylamine. These synthetic fluorescent markers were 7-lauroyloxy-5-acetonyl-2-methylchromone, 7-butyryloxy-5-acetonyl-2-methylchromone and 7-(2-ethyl)-hexanoyloxy-5-acetonyl-2-methylchromone. These synthetic fluorescent markers were invisible color in biodiesel fuels when they were added into biodiesel and quantitative measurement was carried out using spectrofluorometer. All compounds gave fluorescence at 612 nm when they were excited at 464 nm. The testing results of fuel properties using the ASTM test methods revealed that the physical properties of the marked biodiesel fuels were similar to those of the unmarked biodiesel fuels. Moreover, those synthetic fluorescent markers were found to be stable in diesel fuels for at least three months at a concentration of 4 ppm.
Publisher
Trans Tech Publications, Ltd.
Reference7 articles.
1. J.J. Krutak, M.R. Cushaman, M.A. Waever, Chem Abstr 1996, U.S. Patent 525516, 125, 37859n. (1996).
2. M.R. Friswell, European Patent 0509818, A1. (1992).
3. S. Puangmalee S, A. Petsom, P. Thamyongkit, A porphyrin derivative from cardanol as a diesel fluorescent marker, Dyes Pigm. 82 (2009) 26-30.
4. K. Narasimharao K, A. Lee, K. Wilson, Catalysts in production of biodiesel: a review, J Biobased Mater Bioenergy. 1 (2007) 19-30.
5. B.W. Bycroft, A. Hassaniali-Walji, A.W. Johnson, T.J. King, The structure and synthesis of barakol: a novel dioxaphenalene derivative from Cassia siamea., J. Chem. Soc. C 12 (1970) 1686-1689.