Possible precursors and products of deep hydrodesulfurization of gasoline and distillate fuels. Part 2. The thermodynamic properties of 2,3-dihydrobenzo[ b]thiophene

Abstract

Measurements leading to the calculation of the standard thermodynamic properties for gaseous 2,3-dihydrobenzo[ b]thiophene (Chemical Abstracts registry number [4565-32-6]) are reported. Experimental methods include combustion calorimetry, adiabatic heat-capacity calorimetry, vibrating-tube densitometry, comparative ebulliometry, inclined-piston gauge manometry, and differential-scanning calorimetry (d.s.c.). Critical properties are estimated for 2,3-dihydobenzo[ b]thiophene. Standard molar entropies, standard molar enthalpies, and standard molar Gibbs free energies of formation are derived at selected temperatures between T=298.15 K and T=680 K.