Accession Number : AD0639939

Title :   HIGH INTENSITY PHOTOLYSIS STUDIES OF ACETONE AND SOME ALIPHATIC ALDEHYDES,

Corporate Author : UPPSALA UNIV (SWEDEN) INST OF PHYSICAL CHEMISTRY

Personal Author(s) : Wettermark,Gunnar

Report Date : 12 APR 1961

Pagination or Media Count : 79

Abstract : The vapour phase photolysis of acetone, acetaldehyde, propionaldehyde, n-butyraldehyde and isobutyraldehyde has been investigated at very high light intensities. Analyses for all major products were made on samples which were exposed to unfiltered light in a cylindrical reaction vessel. In the present case 1800 joules were discharged in this apparatus, giving absorbed intensities of the order of 10 to the 25th power quanta/sec/litre with a flash period of 10 microsec. The stoichiometry of the products showed that all important constituents were measured. By using a very intense point-discharce, quantum yields for the formation of the main products were determined in parallel light. The samples absorbed light in the absorption band around 280 milliicrons. Flashes of 100,000 joules, which gave absorbed intensities of the order of 10 to the 23rd power quanta/sec/litre were used throughout. The product yields were determined by means of gas chromatography using a flame ionization detector or a high sensitivity thermal conductivity detector.

Descriptors :   (*ACETONES, PHOTOLYSIS), (*ALDEHYDES, PHOTOLYSIS), (*PHOTOLYSIS, ALIPHATIC COMPOUNDS), GAS CHROMATOGRAPHY, CARBON MONOXIDE, ALKANES, ORGANIC OXYGEN COMPOUNDS, HYDROGEN, FREE RADICALS, REACTION KINETICS, SWEDEN

Subject Categories : Organic Chemistry
      Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE