Thermal decomposition of vinylacetylene in shock waves: Rate constant of initiation reaction |
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| Affiliation: | 1. Vinogradov Institute of Geochemistry, SB RAS, Irkutsk, Russia;2. Sobolev Institute of Geology and Mineralogy, SB RAS, Novosibirsk, Russia;3. Novosibirsk State University, Russia;1. V.S. Sobolev Institute of Geology and Mineralogy SB RAS, 3 Ac. Koptyuga ave., Novosibirsk 630090, Russia;2. Novosibirsk State University, 2 Pirogova st., Novosibirsk 630090, Russia;3. Institute of Earth’s Crust, 128 Lermontova st., Irkutsk 664033, Russia;4. SPring-8, Japan Synchrotron Radiation Research Institute, Kouto, Hyogo 678-5198, Japan;5. L.N. Gumilyov Eurasian National University, 2 Satpayev st., Astana 010008, Kazakhstan;1. Univ. Lille, CNRS, UMR 8522 - PC2A - PhysicoChimie des Processus de Combustion et de l''Atmosphère, 59000, Lille, France;2. Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES, Cadarache, 13115, St Paul Lez Durance, France;3. Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité" (C3R), Cadarache, 13115, St Paul Lez Durance, France |
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| Abstract: | The thermal decomposition of vinylacetylene was studied behind incident shock waves over the temperature range 1200–1750 K and over the pressure range 0.3–0.6 atm by tracing the time variation of absorption at 230 nm. The initiation reaction and the rate constant in the thermal decomposition of vinylacetylene were determined from the initial slope of the absorption curve as C4H4 → h1, C4H3+H, k1 = 6.1 × 1013 exp (−80 kcal/RT) s−1. |
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