| Publication Type |
Journal Article |
| Title |
Time-resolved photoacoustic calorimetry as a tool to determine rate constants of hydrogen-abstraction reactions |
| Authors |
PM NUNES CF Correia R.M. Borges dos Santos JAM Simoes |
| Groups |
|
| Journal |
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS |
| Year |
2006 |
| Month |
June |
| Volume |
38 |
| Number |
6 |
| Pages |
357-363 |
| Abstract |
The hydrogen-abstraction reaction from phenol by tert-butoxyl radical was used to test time-resolved photoacoustic calorimetry (TR-PAC) as a method to obtain kinetic data. Absolute rate constants for this reaction were determined in benzene and in the 298-312 K temperature range, using a temperature-control led photoacoustic calorimeter, yielding an average value of 3.5 x 10(8) M-1 s(-1). This is in good agreement with the literature results obtained by laser Hash photolysis (LFP). Kinetic solvent effects (KSE) in the same reaction were also studied using acetonitrile, carbon tetrachloride, and ethyl acetate as solvents. The results obtained by TR-PAC are close to those derived by LFP (using the cumyloxyl radical as the abstracting species) and follow the expected trend based on the KSE. (c) 2006 Wiley Periodicals. |
| DOI |
http://dx.doi.org/10.1002/kin.20173 |
| ISBN |
|
| Publisher |
JOHN WILEY \& SONS INC |
| Book Title |
|
| ISSN |
0538-8066 |
| EISSN |
|
| Conference Name |
|
| Bibtex ID |
ISI:000237523500001 |
| Observations |
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