A shock tube study on the pyrolysis of 1,4-dioxane
نویسندگان
چکیده
The dissociation of 2% 1,4-dioxane dilute in krypton was studied in a shock tube, ST, using laser schlieren densitometry, LS, at 1550-2100 K and 123±2 Torr. Products were identified by ST/time-of-flight mass spectrometry. 1,4-dioxane was found to initially dissociate via C-O bond fission followed by a 2,6 H-atom transfer to the O atom at the scission site. Simulations of the LS profiles with a 72 reaction mechanism gave excellent agreement. Rate coefficients for the initial dissociation yielded k1,123Torr(T) = (2.10 ± 0.30) × 10 × exp(15006/T) s. Optimization of the simulations yielded k37 = (2.25 ± 0.60) × 10 ×T × exp(860/T) cmmols for H-abstraction from 1,4-dioxane by OH radicals.
منابع مشابه
A shock tube and theoretical study on the pyrolysis of 1,4-dioxane.
The dissociation of 1, 2 and 4% 1,4-dioxane dilute in krypton was studied in a shock tube using laser schlieren densitometry, LS, for 1550-2100 K with 56 ± 4 and 123 ± 3 Torr. Products were identified by time-of-flight mass spectrometry, TOF-MS. 1,4-dioxane was found to initially dissociate via C-O bond fission followed by nearly equal contributions from pathways involving 2,6 H-atom transfers ...
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