fulltext.study @t Gmail

The CH3CO quantum yield in the 248 nm photolysis of acetone, methyl ethyl ketone, and biacetyl

Paper ID Volume ID Publish Year Pages File Format Full-Text
29099 44118 2008 9 PDF Available
Title
The CH3CO quantum yield in the 248 nm photolysis of acetone, methyl ethyl ketone, and biacetyl
Abstract

We report measurements of the CH3CO quantum yield, ΦCH3COΦCH3CO, following the 248 nm pulsed laser photolysis of acetone (CH3C(O)CH3), methyl ethyl ketone (CH3C(O)CH2CH3), and biacetyl (CH3C(O)C(O)CH3). CH3CO quantum yields at 248 nm were measured at 296 K, relative to CH3CO reference systems. CH3CO was detected using cavity ring-down spectroscopy at wavelengths between 490 and 660 nm. Measurements were performed between 60 and 670 Torr (He, N2 bath gases) and the obtained CH3CO quantum yields in the low-pressure limit, ΦCH3CO0, were 0.535 ± 0.09, 0.41 ± 0.08, and 0.76 ± 0.11, for acetone, methyl ethyl ketone, and biacetyl, respectively. The quoted uncertainties are 2σ   (95% confidence level) and include estimated systematic errors. An increase in ΦCH3COΦCH3CO with increasing bath gas pressure, which depended on the identity of the collision partner (He, N2), was observed. The present results are compared with previous quantum yield determinations.

Keywords
Acetyl radical; Acetone; Photolysis; Quantum yield
First Page Preview
The CH3CO quantum yield in the 248 nm photolysis of acetone, methyl ethyl ketone, and biacetyl
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 199, Issues 2–3, 25 September 2008, Pages 336–344
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us