science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: acetone					Other Names: dimethyl ketone; propanone

Formula: C3H6O;	CH3C(O)CH3				CAS-No.: 67-64-1

Study: photolysis, quantum yields

                
Authors: H. Somnitz, M. Fida, T. Ufer, R. Zellner 

Title: Pressure dependence for the CO quantum yield in the photolysis of acetone at 248 nm: A combined experimental and theoretical study

Journal/Source: Phys. Chem. Chem. Phys., 7, 3342 - 3352, (2005); DOI: 10.1039/b506738c


Data: 

Energy/Wavelength range: 248 nm

Resolution: 

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: 20 -900 mbar (N2)

Phase: gas

pH:


Comments: The quantum yield of CO in the laser pulse photolysis of acetone at 248 nm and at 298 K in the pressure range 20–900 mbar (N2) has been 
measured directly using quantitative infrared diode laser absorption of CO.
The authors found that the quantum yield of CO shows a significant dependence on total pressure with CO decreasing with pressure from around 0.45 at 20 mbar 
to approximately 0.25 at 900 mbar.

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