Abstract
The 1H NMR chemical shifts of alcohol+hydrocarbon systems over the whole concentration range at 298.15K were measured. Based on the concept of local composition (LC), the concentration-dependent 1H NMR chemical shift data of the OH and CH groups for 13 alcohol+hydrocarbon systems were correlated with only one energy parameter, respectively. Using the parameters obtained from the spectra alone, the isothermal and isobaric vapor–liquid equilibria (VLE) data of the above-mentioned alcohol+hydrocarbon systems were predicted with satisfactory results. By this way, the spectroscopic information can be used to predict VLE data of alcohol+hydrocarbon systems directly.
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