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New solid state heat capacity data for tetracene and pentacene are reported in the temperature range (258 to 600) K. The heat capacity measurements were performed using the step method with a Setaram Micro DSC III calorimeter (Institute of Chemical Technology, Prague) and a Setaram TG-DSC 111 (University of Alberta) calorimeter. These new heat capacity data are shown to be in good agreement with one another and with several solid state constant-pressure heat capacity estimation methods and quantum mechanical calculations. The new results highlight errors in the solid state heat capacity and melting point databases for polynuclear aromatic hydrocarbons.

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Isobaric heat capacities in the liquid and solid phases of chloroanilines and chloronitrobenzenes were measured by using a highly sensitive Tian−Calvet differential scanning calorimeter in the temperature range from 270 K to 350 K. For some of the studied compounds, temperature and enthalpy of fusion were also determined. Data on liquid heat capacities obtained in this work, were merged with available literature data, critically assessed, and correlated as a function of temperature.

Abstract The final disposition of spent nuclear fuel (SNF) is an area that requires innovative solutions. The use of ionic liquids (ILs) has been examined as one means to remediate SNF in a variety of different chemical environments and with different chemical starting materials. The effectiveness of various ILs for SNF reprocessing, as well as the reaction chemistry that occurs in them, is discussed.

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