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Phenolic antioxidants have limited solubility in biodiesel, so this research developed new antioxidants by addition of hydroquinone and catechol on unsaturated fatty acid esters, which improved significantly the oxidative stability of rapeseed biodiesel. This new compound class is more soluble in biodiesel than hydroquinone and catechol, in same molar concentrations. The aging of biodiesel was studied...
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