TY - JOUR
T1 - High-Temperature Reaction Kinetics of the eaq- and HO2• Radicals with Iron(II) Ions in Aqueous Solutions
AU - Conrad, Jacy K.
AU - Lisouskaya, Aliaksandra
AU - Barr, Logan
AU - Stuart, Craig R.
AU - Bartels, David M.
N1 - Funding Information:
This work was supported through the INL Laboratory Research & Development (LDRD) Program under DOE Idaho Operations Office Contract DE-AC07-05ID14517. The Notre Dame Radiation Laboratory is supported by the Division of Chemical Sciences, Geosciences and Biosciences, Basic Energy Sciences, Office of Science, US-DOE through Award No. DE-FC02-04ER15533. L.B. and C.R.S. were supported by the Atomic Energy of Canada Limited’s Federal Nuclear Science & Technology Work Plan. The authors thank Christine McGregor at Canadian Nuclear Laboratories for performing initial scoping experiments. This is document number # 5396 from the Notre Dame Radiation Laboratory.
Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/6/27
Y1 - 2023/6/27
N2 - Pulsed electron radiolysis was used to determine the chemical reaction kinetics and Arrhenius parameters for iron(II) reactions in aqueous solutions under irradiation. The second-order Fe2+ reactions with the hydrated electron (eaq-) and the perhydroxyl radical (HO2•), arising from water radiolysis, were measured to high temperatures using custom-built flow-through cells with a multichannel optical detection system. The reaction with the HO2• radical was found to proceed via the formation of a metal-ion adduct species, Fe2+-HO2•. The adduct’s molar extinction coefficient and its first-order decay rate coefficients are also reported.
AB - Pulsed electron radiolysis was used to determine the chemical reaction kinetics and Arrhenius parameters for iron(II) reactions in aqueous solutions under irradiation. The second-order Fe2+ reactions with the hydrated electron (eaq-) and the perhydroxyl radical (HO2•), arising from water radiolysis, were measured to high temperatures using custom-built flow-through cells with a multichannel optical detection system. The reaction with the HO2• radical was found to proceed via the formation of a metal-ion adduct species, Fe2+-HO2•. The adduct’s molar extinction coefficient and its first-order decay rate coefficients are also reported.
UR - http://www.scopus.com/inward/record.url?scp=85164436860&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/105f3bd0-f8e3-3248-baec-1f0e154fbc9a/
U2 - 10.1021/acs.jpca.3c02436
DO - 10.1021/acs.jpca.3c02436
M3 - Article
C2 - 37369989
AN - SCOPUS:85164436860
SN - 1089-5639
VL - 127
SP - 5683
EP - 5688
JO - Journal of Physical Chemistry A
JF - Journal of Physical Chemistry A
IS - 27
ER -