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The low temperature gas phase oxidation of acetaldehyde and propionaldehyde
β Scribed by D.I. Bell; G. Skirrow; C.F.H. Tipper
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- English
- Weight
- 196 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0010-2180
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β¦ Synopsis
An account is given of some observations of the low temperature oxidations of acetaldehyde and propionaldehyde in the gas phase with particular reference to the region in which the rates are oxygen dependent; these observations have formed the basis of a previous publication in which mechanistic features of the oxidations were examined by methods of numerical analysis. In addition, some unusual observations made during the oxidation of acetaldehyde ina pot~siumchloride coated vesselat temperaturc~ between 120'and 14fl~C are reported Withlhissurfacetherate is enhanced relative to that in a Pyrex vessel, and under certain conditions pressure pubes closely resembling those doe to cool flames are observed even at temperatures as low as 120"C.
π SIMILAR VOLUMES
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The oxidation of propionaldehyde has been investigated in a l-L Pyrex reactor at total pressures of 50-120 torr and temperatures 553-713 K. Detection of reactants and products was principally by molecular beam mass spectrometry, although certain species could only be measured by gas-chromatographic
The ion-molecule reactions between protonated acetaldehyde and methanol were explored on a quadrupole, quistor, quadrupole tandem mass spectrometer. In addition to proton transfer to methanol and subsequent methanol ionmolecule chemistry, the protonated acetaldehyde-methanol adduct and methylated ac