Figure 9

NMR spectrum of biodiesel obtained from the esterification of oleic acid with methanol catalyzed by WNS-SO3H using optimum reaction condition (a) 1H NMR spectrum (b) 13C NMR spectrum.

NMR spectrum of biodiesel obtained from the esterification of oleic acid with methanol catalyzed by WNS-SO3H using optimum reaction condition (a) 1H NMR spectrum (b) 13C NMR spectrum.