An isoperibol micro-bomb combustion calorimeter for measurement of the enthalpy of combustion. Application to the study of fullerene C_(60)

摘要

A microstatic-bomb combustion calorimeter has been developed from a 1107 Parr semi-micro-bomb. The energy equivalent of this calorimeter is just #epsilon#(calor) = (687.45 +- 0.34) J (centre dot)K~-1), which means an uncertainty of 0.05% for the calibration with benzoic acid NIST 39j. This combustion calorimeter has found direct application in the measurement of the enthalpy of combustion of the fullerene C_(60), giving #DELTA#_cU_m deg (cr, 298.15 K) = -(25899.1 +- 14.2) kJ(centre dot)mol~(-1) for this substance.