photooxidation of o-methylacetophenones.
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photooxidation of o-methylacetophenones. by François Xavier Garneau

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Published in [Toronto] .
Written in English

Subjects:

  • Methylacetophenones,
  • Diazo ketones,
  • Photochemistry

Book details:

Edition Notes

ContributionsToronto, Ont. University. Theses (Ph.D.)
Classifications
LC ClassificationsLE3 T52 PHD 1969 G37
The Physical Object
Pagination154p.
Number of Pages154
ID Numbers
Open LibraryOL18167808M

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Photooxidation of carbonyl sulfide (COS) under UV irradiation and the role of the oxides such as SiO 2, Al 2 O 3 and Fe 2 O 3 were investigated by in situ FTIR in a long optical path cell. The China Chen. To investigate the sensitivity of secondary aerosol formation and oxidation capacity to NO x in homogeneous and heterogeneous reactions, a series of irradiated toluene/NO x /air and α-pinene/NO x /air experiments were conducted in smog chambers in the absence or presence of Al2O3 seed Some recent studies mainly addressing the preparation and the modification of nanostructured thin films based on WO3 and their application to photoelectrolysis of aqueous electrolytes are reviewed with the aim of rationalizing the main factors at the basis of an efficient photoanodic response. WO3   O 2 ∙− is then converted rapidly by superoxide dismutase (SOD) into H 2 O 2, which is a more stable ROS, although hydroxyl radicals (OH ∙−), the most short-lived ROS, can be produced from H 2 O 2 through the Fenton and Haber-Weiss reactions (Fig. 2A; Anthony et al., ; Asada, ; Pintó-Marijuan and Munné-Bosch, )

   The Origin and Significance of Photorespiration. Photorespiration is the process of light-dependent uptake of molecular oxygen (O 2) concomitant with release of carbon dioxide (CO 2) from organic gas exchange resembles respiration and is the reverse of photosynthesis where CO 2 is fixed and O 2 released. As shown in Figure 1, the entrance reactions to both photosynthesis    Photooxidation mechanisms of A. confusa heartwood extracts (AcE) Our previous studies have examined the influence of AcE on wood photostability [8,9] and found that the lignin degradation would be inhibited via primary photooxidation of AcE. Similar to other photostabilizers, AcE may be oxidized after UV irradiation, on inhibition mechanisms of light-induced wood radicals.   Photodegradation of polystyrene (e.g. embrittlement and color change) can take place upon irradiation with a portion of UV light that is contained within sun light. Many reviews have been published on photodegradation and photooxidation degradation of polystyrene (Pinto et al. ; Gijsman and Diepens ; Rabek ). The gas-phase photooxidation of trichloroethylene (TCE) on Pt/TiO 2 has been investigated. The wavelength dependence of this reaction on Pt/TiO 2 shows that the addition of small amounts of platinum (≤2%) to TiO 2 can enhance the photooxidation of TCE to much longer wavelengths. This result correlates with Maxwell−Garnett calculations and experimental absorption curves for Pt/TiO 2 ://

  The chapter is from the book Best Practice Guide on the Control of Arsenic in Drinking Water, Prosun Bhattacharya, David A. Polya and Dragana Jovanovic (Eds.). DOI: /_ David A. Polya1 and Michael J. Watts2 1School of Earth and Environmental Sciences, The University of Manchester, Manchester M13 Air transport is probably the principal method whereby pesticides are dispersed over wide areas and into bodies of water far removed from sites of application. For example, airborne particulates @[email protected] reactions induced by light. Common processes are: 1, the loss of one or more electrons from a chemical species as a result of @[email protected] of that species; 2, the reaction of a substance with oxygen under the influence of :// Dilute mixtures of hexanal in synthetic air (up to ppm) were photolyzed with fluorescent UV lamps ( nm) in air at K. The main photooxidation products, identified and quantitatively analyzed by FTIR spectroscopy, were butene, CO, vinylalcohol and ethanal. The photolysis rates and the absolute quantum yield Φ were found to be slightly dependent on the total ://