biblio
“Esterification of levulinic acid to n-butyl levulinate over heteropolyacid supported on acid-treated clay”, Journal of Natural Gas Chemistry, vol. 20, no. 1, pp. 18-24, 2011.
, “Esterification of renewable levulinic acid to n-butyl levulinate over modified H-ZSM-5”, Chemical Engineering & Technology, vol. 38, no. 2, pp. 246-252, 2015.
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