SPECTRUM AND MUTUAL KINETICS OF HOCH2CH2O2 RADICALS

C Anastasi; D J Muir; V J Simpson; P Pagsberg

SPECTRUM AND MUTUAL KINETICS OF HOCH2CH2O2 RADICALS

C Anastasi, D J Muir, V J Simpson, P Pagsberg

Health Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

Beta-Hydroxyethyl peroxy radicals have been studied by using pulse radiolysis to generate the radicals and kinetic absorption to monitor their formation and decay. The ultraviolet absorption spectrum assigned to HOCH2CH2O2 is broadband in nature with a maximum absorption cross section of 3.5 (+/- 0.6) x 10(-18) cm2 molecule-1 at 230 nm. An overall rate constant for the self-reaction 2HOCH2CH2O2 --> HOCH2CH2OH + HOCH2CHO + O2 (3a), 2HOCH2CH2O2 --> 2HOCH2CH2O + O2 (3b) of k3 = 7.7 (+/- 1.2) x 10(-12) cm3 molecule-1 s-1 was measured at room temperature together with an estimation of the branching ratio, k3a/k3 = 0.75 (+/- 0.1).

Original language	English
Pages (from-to)	5791-5797
Number of pages	7
Journal	Journal of Physical Chemistry
Volume	95
Issue number	15
Publication status	Published - 25 Jul 1991

Keywords

UV-ABSORPTION-SPECTRUM
GAS-PHASE
TEMPERATURE-DEPENDENCE
SELF-REACTION
RATE-CONSTANT
DISPROPORTIONATION REACTION
MOLECULAR MODULATION
INITIATED OXIDATION
NITRIC-OXIDE
OXYGEN

Cite this

@article{56016e490ebe460eb7afeddadd9eee04,

title = "SPECTRUM AND MUTUAL KINETICS OF HOCH2CH2O2 RADICALS",

abstract = "Beta-Hydroxyethyl peroxy radicals have been studied by using pulse radiolysis to generate the radicals and kinetic absorption to monitor their formation and decay. The ultraviolet absorption spectrum assigned to HOCH2CH2O2 is broadband in nature with a maximum absorption cross section of 3.5 (+/- 0.6) x 10(-18) cm2 molecule-1 at 230 nm. An overall rate constant for the self-reaction 2HOCH2CH2O2 --> HOCH2CH2OH + HOCH2CHO + O2 (3a), 2HOCH2CH2O2 --> 2HOCH2CH2O + O2 (3b) of k3 = 7.7 (+/- 1.2) x 10(-12) cm3 molecule-1 s-1 was measured at room temperature together with an estimation of the branching ratio, k3a/k3 = 0.75 (+/- 0.1).",

keywords = "UV-ABSORPTION-SPECTRUM, GAS-PHASE, TEMPERATURE-DEPENDENCE, SELF-REACTION, RATE-CONSTANT, DISPROPORTIONATION REACTION, MOLECULAR MODULATION, INITIATED OXIDATION, NITRIC-OXIDE, OXYGEN",

author = "C Anastasi and Muir, {D J} and Simpson, {V J} and P Pagsberg",

year = "1991",

month = jul,

day = "25",

language = "English",

volume = "95",

pages = "5791--5797",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

number = "15",

}

TY - JOUR

T1 - SPECTRUM AND MUTUAL KINETICS OF HOCH2CH2O2 RADICALS

AU - Anastasi, C

AU - Muir, D J

AU - Simpson, V J

AU - Pagsberg, P

PY - 1991/7/25

Y1 - 1991/7/25

N2 - Beta-Hydroxyethyl peroxy radicals have been studied by using pulse radiolysis to generate the radicals and kinetic absorption to monitor their formation and decay. The ultraviolet absorption spectrum assigned to HOCH2CH2O2 is broadband in nature with a maximum absorption cross section of 3.5 (+/- 0.6) x 10(-18) cm2 molecule-1 at 230 nm. An overall rate constant for the self-reaction 2HOCH2CH2O2 --> HOCH2CH2OH + HOCH2CHO + O2 (3a), 2HOCH2CH2O2 --> 2HOCH2CH2O + O2 (3b) of k3 = 7.7 (+/- 1.2) x 10(-12) cm3 molecule-1 s-1 was measured at room temperature together with an estimation of the branching ratio, k3a/k3 = 0.75 (+/- 0.1).

AB - Beta-Hydroxyethyl peroxy radicals have been studied by using pulse radiolysis to generate the radicals and kinetic absorption to monitor their formation and decay. The ultraviolet absorption spectrum assigned to HOCH2CH2O2 is broadband in nature with a maximum absorption cross section of 3.5 (+/- 0.6) x 10(-18) cm2 molecule-1 at 230 nm. An overall rate constant for the self-reaction 2HOCH2CH2O2 --> HOCH2CH2OH + HOCH2CHO + O2 (3a), 2HOCH2CH2O2 --> 2HOCH2CH2O + O2 (3b) of k3 = 7.7 (+/- 1.2) x 10(-12) cm3 molecule-1 s-1 was measured at room temperature together with an estimation of the branching ratio, k3a/k3 = 0.75 (+/- 0.1).

KW - UV-ABSORPTION-SPECTRUM

KW - GAS-PHASE

KW - TEMPERATURE-DEPENDENCE

KW - SELF-REACTION

KW - RATE-CONSTANT

KW - DISPROPORTIONATION REACTION

KW - MOLECULAR MODULATION

KW - INITIATED OXIDATION

KW - NITRIC-OXIDE

KW - OXYGEN

M3 - Article

SN - 0022-3654

VL - 95

SP - 5791

EP - 5797

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 15

ER -