
%0 Journal Article
%A Dorman, FH 
%A Buchanan, AS 
%T The photolysis of gaseous aldehydes. I. The production of Ethane and Hydrogen in the Photolysis of Acetaldehyde
%J Australian Journal of Chemistry
%D 1956/03/01
%V 9
%N 1
%P 25-33
%K 
%R https://doi.org/10.1071/CH9560025
%U https://www.publish.csiro.au/paper/CH9560025 
%X The rate of production of ethane in acetaldehyde photolysis has been calculated from iodine-methyl trapping experiments, and compared with the experimental values over the temperature range 120-360 °C. The ratio of observed to calculated ethane rises from 0.5 at 120 °C to 2 at 350 °C, whilst the ratio of observed hydrogen to observed ethane rises from 0.25 at 120 °C to 1 at about 300 °C. The activation energy using the methyl radical concentration was calculated to be 7.4 kcal mole-1 for the reaction           CH3 +CH3CHO+CH,+CH3CO. It was concluded that formyl radical recombination occurred in a higher temperature region (up to about 300 °C) than acetyl radical recombination (up to about 200 °C), for the experimental conditions used. It was also found that in the temperature region above about 250 °C a significant hydrogen atom chain initiation occurred. 
