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Title: Pulse radiolytic studies of supercritical CO{sub 2}.

Abstract

The species produced by ionizing radiation in supercritical CO{sub 2} have been measured at a reduced temperature of 1.03 from 78 to 117 bar. It has been shown that C{sub 2}O{sub 4}{sup +} is formed. This then reacts with positive ion scavengers. Its rate constant with dimethylaniline is 1.2x10{sup 11} {updownarrow} mol{sup -1} s{sup -1} at 104 bar. The amount of C{sub 2}O{sub 4}{sup +} formed is not proportional to the CO{sub 2} density. This is attributed to an increased escape of the geminate ions at lower densities. We have also measured the production of ozone, which implies the production of O atoms and a production of oxygen molecules.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
942503
Report Number(s):
ANL/CHM/JA-32081
Journal ID: ISSN 0009-2614; CHPLBC; TRN: US0902991
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Chem. Phys. Lett.
Additional Journal Information:
Journal Volume: 309; Journal Issue: 1-2 ; Aug. 6, 1999; Journal ID: ISSN 0009-2614
Country of Publication:
United States
Language:
ENGLISH
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; IONIZING RADIATIONS; SUPERCRITICAL STATE; CARBON DIOXIDE; IONS; RADIOLYSIS; OZONE; SYNTHESIS

Citation Formats

Dimitrijevic, N. M., Bartels, D. M., Jonah, C. D., Takahashi, K., Chemistry, and Hokkaido Univ. Pulse radiolytic studies of supercritical CO{sub 2}.. United States: N. p., 1999. Web. doi:10.1016/S0009-2614(99)00674-0.
Dimitrijevic, N. M., Bartels, D. M., Jonah, C. D., Takahashi, K., Chemistry, & Hokkaido Univ. Pulse radiolytic studies of supercritical CO{sub 2}.. United States. doi:10.1016/S0009-2614(99)00674-0.
Dimitrijevic, N. M., Bartels, D. M., Jonah, C. D., Takahashi, K., Chemistry, and Hokkaido Univ. Fri . "Pulse radiolytic studies of supercritical CO{sub 2}.". United States. doi:10.1016/S0009-2614(99)00674-0.
@article{osti_942503,
title = {Pulse radiolytic studies of supercritical CO{sub 2}.},
author = {Dimitrijevic, N. M. and Bartels, D. M. and Jonah, C. D. and Takahashi, K. and Chemistry and Hokkaido Univ.},
abstractNote = {The species produced by ionizing radiation in supercritical CO{sub 2} have been measured at a reduced temperature of 1.03 from 78 to 117 bar. It has been shown that C{sub 2}O{sub 4}{sup +} is formed. This then reacts with positive ion scavengers. Its rate constant with dimethylaniline is 1.2x10{sup 11} {updownarrow} mol{sup -1} s{sup -1} at 104 bar. The amount of C{sub 2}O{sub 4}{sup +} formed is not proportional to the CO{sub 2} density. This is attributed to an increased escape of the geminate ions at lower densities. We have also measured the production of ozone, which implies the production of O atoms and a production of oxygen molecules.},
doi = {10.1016/S0009-2614(99)00674-0},
journal = {Chem. Phys. Lett.},
issn = {0009-2614},
number = 1-2 ; Aug. 6, 1999,
volume = 309,
place = {United States},
year = {1999},
month = {8}
}