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Published March 1961 | Published
Journal Article Open

Photochemical Studies in Flash Photolysis. II. Photolysis of Acetone with Filtered Light

Abstract

Flash photolysis was studied in the absence of wavelengths below 200 mμ. Effects of acetone pressure, light intensity, added biacetyl, temperature, and wavelength were investigated. The results are consistent with primary acts postulated previously on the basis of low‐intensity studies, but with the absence of complicating first‐order secondary reactions at these high radical concentrations. Deactivation of excited molecules explains the pressure effect on the C_2H_6/CO ratio, for wall effects are absent under flash conditions. A hot radical mechanism is suggested by the data for methane formation. The effect of wavelength on C_2H_6/CO ratio in regions centered near 260, 280, and 295 mμ is rather striking, and the results are compared with trends in low‐intensity studies in the same pressure region.

Additional Information

© 1961 American Institute of Physics. Received 8 August 1960. Online Publication Date: 6 August 2004. Abstracted from the doctoral dissertation of Norman Slagg, Polytechnic Institute of Brooklyn, June, 1960. (Available on microfilm from University Microfilms, Ann Arbor, Michigan.) Presented in part at the 132nd Meeting of the American Chemical Society, New York City, September, 1957. Alfred P. Sloan Research Fellow. The authors are pleased to acknowledge the support of this research by the United States Air Force WADC and Office of Scientific Research.

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