Formation of methyl nitrite and methyl nitrate during plasma treatment of diesel exhaust
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Formation of methyl nitrite and methyl nitrate during plasma treatment of diesel exhaust. / Wallington, TJ; Hoard, JW; Andersen, Mads Peter Sulbæk; Hurley, MD.
I: Environmental Science & Technology (Washington), Bind 37, Nr. 18, 15.09.2003, s. 4242-4245.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Formation of methyl nitrite and methyl nitrate during plasma treatment of diesel exhaust
AU - Wallington, TJ
AU - Hoard, JW
AU - Andersen, Mads Peter Sulbæk
AU - Hurley, MD
PY - 2003/9/15
Y1 - 2003/9/15
N2 - FIR spectroscopy was used to identify CH3ONO and CH3ONO2 as products of the nonthermal plasma treatment of simulated diesel exhaust. This is the first observation of CH3ONO formation in such systems. The yield of CH3ONO relative to CH3ONO2 scaled linearly with the average [NO]/ [NO2] ratio in the system. A plot of [CH3ONO]/[CH3ONO2] versus [NO]/[NO2] gives a slope of 1.81 +/- 0.30. This result is indistinguishable from the literature value of the rate constant ratio k(CH3O + NO)/k(CH3O + NO2) = (2.6 x 10(-11))/ (1.5 x 10(-11)) = 1.73 +/- 0.37. The experimental observations suggest that reactions of CH3O radicals with NO and NO2 are the sources of CH3ONO and CH3ONO2 in such systems. The linear relationship between the yields of CH3ONO and CH3ONO2 provides a means of estimating the yield of these compounds during nonthermal plasma treatment of diesel exhaust.
AB - FIR spectroscopy was used to identify CH3ONO and CH3ONO2 as products of the nonthermal plasma treatment of simulated diesel exhaust. This is the first observation of CH3ONO formation in such systems. The yield of CH3ONO relative to CH3ONO2 scaled linearly with the average [NO]/ [NO2] ratio in the system. A plot of [CH3ONO]/[CH3ONO2] versus [NO]/[NO2] gives a slope of 1.81 +/- 0.30. This result is indistinguishable from the literature value of the rate constant ratio k(CH3O + NO)/k(CH3O + NO2) = (2.6 x 10(-11))/ (1.5 x 10(-11)) = 1.73 +/- 0.37. The experimental observations suggest that reactions of CH3O radicals with NO and NO2 are the sources of CH3ONO and CH3ONO2 in such systems. The linear relationship between the yields of CH3ONO and CH3ONO2 provides a means of estimating the yield of these compounds during nonthermal plasma treatment of diesel exhaust.
U2 - 10.1021/es034126i
DO - 10.1021/es034126i
M3 - Tidsskriftartikel
VL - 37
SP - 4242
EP - 4245
JO - Environmental Science & Technology
JF - Environmental Science & Technology
SN - 0013-936X
IS - 18
ER -
ID: 44568508