Thermochemical behavior of C_60. Kinetics of decomposition in different atmospheres

摘要

The processes of decomposition of C_60 in different atmospheres were investigated by TG and DTG methods. It was observed that the temperature maxima on the DTG curves are shifted towards higher temperatures by about 200 K in an inert nitrogen atmosphere compared to The values in air. Kinetic parameters were calcu- Lated by methods evaluated for processes under Nonisothermal conditions. In air, where oxidation Takes place, the values of the activation energy Depending on the method used, are: Ea=145±6 KJ/mol (Freeman-Carroll), E_a=138±16 kJ/mol (Ozawa), Ea=121±14 kJ/mol (Kissinger).