Shock wave studies of the pyrolysis of fluorocarbon oxygenates. II. The thermal dissociation of C4F8O. Issue 4 (13th January 2017)

• Record Type: Journal Article
• Authors: Cobos, C. J.; Hintzer, K.; Sölter, L.; Tellbach, E.; Thaler, A.; Troe, J.
• Is Part Of: Physical chemistry chemical physics. Volume 19:Issue 4(2017)
• Page Start: 3159
• Page End: 3164
• Publication Date: 2017-01-13
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c6cp06822g
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : The thermal decomposition of octafluorooxalane, C4 F8 O, to C2 F4 + CF2 + COF2 has been studied in shock waves in Ar between 1300 and 2200 K. Two pathways were identified. Abstract : The thermal decomposition of octafluorooxalane, C4 F8 O, to C2 F4 + CF2 + COF2 has been studied in shock waves highly diluted in Ar between 1300 and 2200 K. The primary dissociation was shown to be followed by secondary dissociation of C2 F4 and dimerization of CF2 . The primary dissociation was found to be in its falloff range and falloff curves were constructed. The limiting low and high pressure rate constants were estimated and compared with modelling results. Quantum-chemical calculations identified possible reaction pathways, either leading directly to the final products of the reaction or passing through an open-chain CF2 CF2 CF2 intermediate which dissociates in a second step.