Correlation of liquid heat capacities for fossil fuels using characterization data

摘要: Heat capacities for liquid fossil-fuel fractions are correlated as a function of characterization data. The correlation uses molecular weight from freezing-point-depression or gel-permeation-chromatography measurements, molar hydrogen-to-carbon ratio elemental analysis, hydrogen distribution proton-nuclear-magnetic-resonance data, and if available, number methyl, hydroxyl, primary amine secondary groups per molecule IR spectroscopy. is established temperatures below 500 K using data 118 pure hydrocarbons; the average deviation experiment 2.3 %. When used to predict heat nine petroleum fractions, 2.6%. Average deviations 14 coal-derived liquids about 6.5%, but those containing more than 3 wt% oxygen, somewhat lower. For high-oxygencontaining presented here significantly better that Mraw et al.