High-cetane additives for diesel based on polyoxymethylene dimethyl ethers: Density behavior and prediction

The self-expanding empirical density model has been developed to predict the densities of pure polyoxymethylene dimethyl ethers whose pure and reliable monomer could not be readily available. Density behavior research results showed the excess molar volumes of PODE-PODE are negative and approximately equal to zero, indicating PODE-PODE mixtures could be regarded as the regular solution at temperatures from 273.15 to 363.15 K. While the excess molar volumes of PODE3-hexadecane and PODE3-tetralin blends are positive over the complete mole fraction range. Densities of practical PODEn-diesel blends were predicted and compared with experimental data.190