598-58-3Relevant articles and documents
Pressure dependence and kinetic isotope effects in the absolute rate constant for methoxy radical reacting with NO2
Chai, Jiajue,Dibble, Theodore S.
, p. 501 - 511 (2014)
We have investigated the kinetics for the reaction CH3O ? + NO2 in N2 bath gas. The rate constants are well-fit by the Troe expression over the temperature (250-335 K) and pressure range (30-700 Torr) investigated. The termolecular rate constant is given by k1a0=4.29-0.37 +0.40×10-29T/298-(1.65±1.11) cm6 molecule-2 s-1, and the rate constant at the high-pressure limit is given by k1a∞=(1. 95±0.03)×10-11T/298-(1.13±0.18) cm3 molecule-1 s-1. We also studied the kinetics of the reaction of CD3O? + NO2 as a function of temperature and pressure under similar conditions as those for CH3O? + NO2. The resulting low- and high-pressure limiting rate constants are k2a0=9.97-0.91 +1.00×10-29T/298-(4.79±0.92) cm6 molecule-2 s-1 and k2a ∞=(1.91±0.02)×10-11T/298 -(1.11±0.09) cm3 molecule-1 s -1, respectively. The rate constants for the two isotopologues track each other closely as the high-pressure limit is approached. The present results agree with most previous results at 295 K over a range of pressures, but there is substantial disagreement about the temperature dependence.
Role of methyl nitrate in plasma exhaust treatment
Hoard,Balmer,Wallington,Ball,Hurley,Wodzisz
, p. 3427 - 3431 (1999)
There is growing interest in the use of a nonthermal plasma combined with a catalyst for NOx removal from diesel engine exhaust streams, which contain excess oxygen (6-10%), low concentrations of hydrocarbons (100-1000 ppm), and significant concentrations of water (5-12%). Tests were performed to elucidate the effect of methyl nitrate (CH3ONO2) in the plasma-catalyst system since similar compounds have been proposed as reaction intermediates in NOx removal. NO, CO, CO2, O2, SO2, H2, Ar, C3H6, and C3H8 gases were mixed in N2 carrier. CH3ONO2 was prepared and added to the gas blend on test equipment simulating a diesel exhaust gas. CH3ONO2 was formed in a substantial yield on passing hydrocarbon/NOx/O2/N2 mixtures through a nonthermal plasma. The catalyst (consisted of two 24 mm x 24 mm long honeycombs) was very effective at removing CH3ONO2, which is converted into methanol and NO2. CH3ONO2 was not an important intermediate in the NOx removal reaction of the plasma-catalyst system.
MECHANISM AND KINETICS OF THE NITRATION OF METHANOL. COMMUNICATION 2. MECHANISM OF THE NITRATION REACTION
Kazakov, A. I.,Rubtsov, Yu. I.,Zabelin, L. V.,Manelis, G. B.,Marchenko, G. N.
, p. 1142 - 1145 (1987)
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Reaction of CH2OH with O2, NO, and NO2 at Room Temperature
Pagsberg, Palle,Munk, Jette,Anastasi, Christopher,Simpson, Victoria J.
, p. 5162 - 5165 (1989)
The reaction of CH2OH with O2, NO, and NO2 has been studied using pulse radiolysis to generate the radicals and ultraviolet absorption to observe the kinetics.Rate constant values of (0.88 +/- 0.02) x 10-11, (2.5 +/- 0.02) x 10-11, and (2.3 +/- 0.4) x 10-11 cm3 molecule-1 s-1 have been measured at room temperature and 1 atm pressure for the O2, NO, and NO2 reactions, respectively.Absorptions due to long-lived or stable products were observed in the same spectral region.A simple analysis of these observations suggests that formation of an adduct may dominate in the reaction of CH2OH with NO and NO2 but that this process accounts for only a minor route in the O2 reaction.
Cold-surface photochemistry of selected organic nitrates
O'Sullivan, Daniel,McLaughlin, Ryan P.,Clemitshaw, Kevin C.,Sodeau, John R.
, p. 9890 - 9900 (2015/02/19)
Reflection-absorption infrared (RAIR) spectroscopy has been used to explore the low temperature condensed-phase photochemistry of atmospherically relevant organic nitrates for the first time. Three alkyl nitrates, methyl, isopropyl, and isobutyl nitrate together with a peroxyacyl nitrate, peroxyacetyl nitrate (PAN), were examined. For the alkyl nitrates, similar photolysis products were observed whether they were deposited neat to the gold substrate or codeposited with water. In addition to peaks associated with the formation of an aldehyde/ketone and NO, a peak near 2230 cm-1 was found to emerge in the RAIR spectra upon UV photolysis of the thin films. Together with evidence obtained by thermal programmed desorption (TPD), the peak is attributed to the formation of nitrous oxide, N2O, generated as a product during the photolysis. On the basis of the known gas-phase photochemistry for the alkyl nitrates, an intermediate pathway involving the formation of nitroxyl (HNO) is proposed to lead to the observed N2O photoproduct. For peroxyacetyl nitrate, CO2 was observed as a predominant product upon photolytic decomposition. In addition, RAIR absorptions attributable to the formation of methyl nitrate were also found to appear upon photolysis. By analogy to the known gas-phase and matrix-isolated-phase photochemistry of PAN, the formation of methyl nitrate is shown to likely result from the combination of alkoxy radicals and nitrogen dioxide generated inside the thin films during photolysis.
Vapor generation of inorganic anionic species after aqueous phase alkylation with trialkyloxonium tetrafluoroborates
D'Ulivo, Alessandro,Pagliano, Enea,Onor, Massimo,Pitzalis, Emanuela,Zamboni, Roberto
experimental part, p. 6399 - 6406 (2010/04/06)
Aqueous phase reaction of trialkyloxonium tetrafluoroborates, R 3O+BF4- (R=Me, Et) has been tested in the alkylation of simple inorganic anionic substrates such as halogen ions, cyanide, thiocyanate, sulphide an
