Acta Phys. -Chim. Sin. ›› 1990, Vol. 6 ›› Issue (01): 39-45.doi: 10.3866/PKU.WHXB19900107
• ARTICLE •
Tan Zhi-Wei;Yang Hui-Xing;Han De-Gang
The kinetics of the gas-phase thermal isomerization of epoxypropane has been studied over the temperature range 1045-1175 K in a single-pulse shock tube. Uni-molecular isomerizations to propionaldehyde, acetone, methyl vinyl ether and allylol account for about 65% of the primary reactions which occur by first order, homoge-neous, non-radical processes. Secondary reactions, that make quantitative determina-tion of the individual rate constants difficult, were reduced by the addition of radi-cal scavenger nitric oxide.k_(propionaldehyde)(s~(-1))=10~(14.3)exp(-262 kJmol~(-1)/RT)k_(acetone)(s~(-1))=10~(14.0)exp(-268 kJmol~(-1)/RT)k_(methylvinyl ether)(s~(-1))=10~(13.4)exp(-264 kJmol~(-1)/RT)k_(allylol)(s~(-1))=10~(13.9)exp(-275 kJmol~(-1)/RT)A biradical mechanism for the isomerization of epoxypropane has been preferred. It adequately exlained kinetic observations. The RRKM theory of unimolecular reactions was applied to explain the thermal isomerization of epoxypropane.
Tan Zhi-Wei;Yang Hui-Xing;Han De-Gang. Kinetics of the Thermal Gas-Phase Isomerization of Epoxypropane in a Single-Pulse Shock Tube[J].Acta Phys. -Chim. Sin., 1990, 6(01): 39-45.
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