62. Effects of deposition conditions and heat treatment on the properties of pyrolytic carbon

✍ Scribed by Ji Young Chang; E.E Stansbury; W.O Harms

• Publisher: Elsevier Science
• Year: 1965
• Tongue: English
• Weight: 107 KB
• Volume: 3
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(65)90128-4

✦ Synopsis

kz and permit determination of the activation energy (22 kcal) for step 2. Together with the activation energy (52 kcal) for step 1, one obtains 32 kcal as the heat of dissociation of the C-C bond in CsOz at 1000°K. This figure, which at first seems surprisingly low, leads to a reasonable value (f51 kcal) for the heat of formation of CzO, if one accepts -8 kcal as the heat of formation of CsOz. The resonance energy of CzO (23 kcal) is consistent with the resonance energies of COa (25 kcal) and Cs (31 kcal), all calculated relative to simple double-bonded structures.