Asarone

The range of applications for diesel fuel is limited by its poor low-temperature flow qualities.However, adding pour point depressants (PPDs) has shown to be a cost-effective means of enhancing the cold flow performance of diesel.In order to obtain more efficient and novel PPDs, the inhibitory effect of natural aromatic ether extracts with different ether bond numbers (estragole (EE), methyleugenol (ME) and α-asarone (AE)) on the precipitation of wax crystals of diesel was investigated at low temperatureThus, tetradecyl methacylate (C14MC) with EE, ME and AE were used to synthesize C14MC-EE, C14MC-ME and C14MC- AE by free radical polymerizationThe low-temperature fluidity test results indicate that these three natural aromatic ether extracts have the ability to prevent wax crystals from precipitating of diesel fuel at low temperaturesThe sequence of these inhibitory effects is as follows: C14MC-AE > C14MC-ME > C14MC-EE.The better improvement effects were obtained when the addition amount reached 2000 ppm and the molar ratios of the structural units of C14MC and AE were 9:1, resulting in a reduction of the solid point (SP) and cold filter plugging point (CFPP) of 20 and 12 °C, resp.Furthermore, the low-temperature crystallization behaviors of wax crystals were examined in detail using polarized optical microscopy (POM) and differential scanning calorimeters (DSC).It offers great promise for the optimal use of diesel fuel in low temperature environment.