Author/Authors :
Korobov، نويسنده , , M.V. and Senyavin، نويسنده , , V.M. and Bogachev، نويسنده , , A.G. and Stukalin، نويسنده , , E.B. and Davydov، نويسنده , , V.A and Kashevarova، نويسنده , , L.S and Rakhmanina، نويسنده , , A.V and Agafonov، نويسنده , , V. and Szwarc، نويسنده , , A.، نويسنده ,
Abstract :
Differential Scanning Calorimetry and infra-red spectroscopy have been used to study the depolymerization of the two pressure polymerized phases of C60, i.e., rhombohedral (R) and orthorhombic (O) into monomeric C60 at p=1 atm. The depolymerization enthalpies obtained were 10.3 ± 0.5 and 20.1 ± 0.6 kJ/mol for R-, O-phases, respectively. The R-phase, prepared at 1025–1050 K and 6 GPa (‘magnetic carbon’) demonstrated the depolymerization behaviour, similar to the typical R-phase. Part of the p–T-phase diagram of C60 was sketched in, using experimental and literature data.
