Prediction of viscosity of alcohol+hydrocarbon systems by 1H NMR and activity coefficients at infinite dilution

Abstract

Based on the concept of local composition (LC), the 1H NMR chemical shift data of the OH proton over the whole concentration for alcohol+hydrocarbon systems were correlated with only one energy parameter by the LC model. Using this parameter and coupled with one activity coefficient at infinite dilution, the viscosities of some alcohol+hydrocarbon systems were predicted, and the prediction data and experimental one were in a good agreement. The prediction results were also compared with the prediction ones from vapor–liquid equilibria (VLE) data directly, and the former were much better than the latter. In this way, the spectroscopic information can be related to transport property.