Temperature dependence of the relative rate constants of the reactions of alkanes with oh radicals in aqueous solution
A study was carried out on the rate constant ratio ( k RH / k EtH ) in reactions of alkanes C 3 H 8 , n -C 4 H 10 , n -C 5 H 12 , n -C 6 H 14 , i -C 4 H 10 , c -C 5 H 10 , and c -C 6 H 12 with OH radicals in water at 5-55°C and the relative activation parameters A RH / A EtH and E EtH – E RH . The v...
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| Veröffentlicht in: | Theoretical and experimental chemistry 2009-07, Vol.45 (4), p.239-245 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | A study was carried out on the rate constant ratio (
k
RH
/
k
EtH
) in reactions of alkanes C
3
H
8
,
n
-C
4
H
10
,
n
-C
5
H
12
,
n
-C
6
H
14
,
i
-C
4
H
10
,
c
-C
5
H
10
, and
c
-C
6
H
12
with OH radicals in water at 5-55°C and the relative activation parameters
A
RH
/
A
EtH
and
E
EtH
–
E
RH
. The values of
E
EtH
–
E
RH
in water and the gas phase have opposite signs. The values of
k
RH
/
k
EtH
decrease with increasing temperature in the gas phase but increase in water. The behavior of these reactions in water may be attributed to a solvent cage effect. |
|---|---|
| ISSN: | 0040-5760 1573-935X |
| DOI: | 10.1007/s11237-009-9088-3 |