Reaction rates of hydrated electron with N{sub 2}O in high temperature water and potential surface of the N{sub 2}O{sup -} anion.

Journal Article · Thu Jan 15 04:00:00 EST 2004 · Chem. Phys. Lett.

DOI:https://doi.org/10.1016/j.cplett.2003.11.050· OSTI ID:961380

Takahashi, K; Shintaro, O; Koyama, Y; Sawamura, S; Marin, T W; Bartels, D M; Jonah, C D

The reaction rate of hydrated electrons, (e{sup -}){sub aq}, with N{sub 2}O can be fitted with an Arrhenius-type temperature dependence up to 300 {sup o}C with an activation energy of 15.5 kJ/mol. At higher temperatures, the rate constant decreases to give a local minimum at 380 {sup o}C. Ab initio calculations of the N{sub 2}O{sup -} anion suggest a possible dissociation path of N{sub 2}O{sup -} in water. The calculated free energies for electron transfer suggest the (e{sup -}){sub aq} reaction with N{sub 2}O should fall on the 'normal' part of the Marcus parabola, and for this reason the reaction is not diffusion limited.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 961380
• Report Number(s): ANL/CHM/JA-47250
• Journal Information: Chem. Phys. Lett., Journal Name: Chem. Phys. Lett. Journal Issue: 5-6 ; Jan. 15, 2004 Vol. 383; ISSN CHPLBC; ISSN 0009-2614
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ACTIVATION ENERGY
ANIONS
DIFFUSION
DISSOCIATION
ELECTRON TRANSFER
FREE ENERGY
HYDRATION
NITROUS OXIDE
REACTION KINETICS
SOLVATED ELECTRONS
SURFACES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0400-1000 K
WATER