Cart
Article
Electron Attachment to CO2 in Supercritical Ethane
Full Text HTML
Hi-Res PDFPurchase the full-text
- PDF/HTML,
figures/images,
references and tables,
(where available)
Abstract
Thermal electrons attach reversibly to CO2 in supercritical ethane. The equilibrium constants range from 40 to 2 × 104 m-1 for pressures from 50 to 220 bar at 33 and 37 °C. The attachment rate increases and the detachment rate decreases as the pressure increases. The lifetime of CO2- is between 20 and 100 ns in the high-pressure range. The reaction volume changes more than an order of magnitude, from −20.0 to −0.5 L/mol over the pressure and temperature ranges studied. The activation volume is approximately 50% of the reaction volume. Electrostriction volumes of the CO2- ion, calculated by a compressible continuum model, account for the main part of the observed reaction volumes. The calculation shows that the high-density region around each CO2- extends to 1 nm.
Citing Articles
Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.
This article has been cited by 8 ACS Journal articles (5 most recent appear below).
Energetics and Volume Changes in Electron Attachment to Pyrazine in Supercritical Xenon
Richard A. Holroyd and Jack M. Preses, Masaru Nishikawa, Kengo ItohThe Journal of Physical Chemistry B2007 111 (24), 6684-6689Energetics and Volume Changes in Electron Attachment to Pyrazine in Supercritical Xenon
Richard A. Holroyd and Jack M. Preses, Masaru Nishikawa, Kengo ItohThe Journal of Physical Chemistry B2007 111 (24), 6684-6689The attachment of electrons to pyrazine occurs reversibly over a wide range of pressures at and above room temperature in supercritical xenon. The rate constant for attachment increases with pressure at low pressures, passes through a maximum, and levels ...
Properties and Reactions of Charged Species in Nonpolar Supercritical Fluids
Richard Holroyd, Masaru Nishikawa, Kengo ItohThe Journal of Physical Chemistry B2005 109 (7), 2478-2486Properties and Reactions of Charged Species in Nonpolar Supercritical Fluids
Richard Holroyd, Masaru Nishikawa, Kengo ItohThe Journal of Physical Chemistry B2005 109 (7), 2478-2486This review focuses on the properties and reactions of charged species in supercritical fluids. The techniques of pulse conductivity and transient absorption are used to follow the behavior of charged species. We begin with a discussion of the mobilities, ...
Negative Charge Transport in Gaseous, Supercritical, and Liquid Carbon Dioxide
Kengo Itoh, Azusa Muraoka, Kazuo Watanabe, and Takashi Nagata, Masaru Nishikawa, Richard A. HolroydThe Journal of Physical Chemistry B2004 108 (28), 10177-10184Negative Charge Transport in Gaseous, Supercritical, and Liquid Carbon Dioxide
Kengo Itoh, Azusa Muraoka, Kazuo Watanabe, and Takashi Nagata, Masaru Nishikawa, Richard A. HolroydThe Journal of Physical Chemistry B2004 108 (28), 10177-10184The mobility of one of two types of fast moving negative charge carriers was measured by a time-of-flight method over a wide range of the solvent density ρ in gaseous, supercritical, and liquid carbon dioxide. Charge carriers are formed by laser ...
Transient Negative Species in Supercritical Carbon Dioxide: Electronic Spectra and Reactions of CO2 Anion Clusters
Kenji Takahashi, Sadashi Sawamura, Nada M. Dimitrijevic, David M. Bartels, and Charles D. JonahThe Journal of Physical Chemistry A2002 106 (1), 108-114Transient Negative Species in Supercritical Carbon Dioxide: Electronic Spectra and Reactions of CO2 Anion Clusters
Kenji Takahashi, Sadashi Sawamura, Nada M. Dimitrijevic, David M. Bartels, and Charles D. JonahThe Journal of Physical Chemistry A2002 106 (1), 108-114Transient absorption spectra following ionization of supercritical CO2 have been investigated using the pulse radiolysis technique. Absorption spectra measured from 400 to 800 nm suggest that at least two transient species absorb. We have previously ...
Radiolytically Induced Formation and Optical Absorption Spectra of Colloidal Silver Nanoparticles in Supercritical Ethane,
Nada M. Dimitrijevic, David M. Bartels, Charles D. Jonah, Kenji Takahashi, and Tijana RajhThe Journal of Physical Chemistry B2001 105 (5), 954-959Radiolytically Induced Formation and Optical Absorption Spectra of Colloidal Silver Nanoparticles in Supercritical Ethane,
Nada M. Dimitrijevic, David M. Bartels, Charles D. Jonah, Kenji Takahashi, and Tijana RajhThe Journal of Physical Chemistry B2001 105 (5), 954-959Colloidal silver nanoparticles were synthesized in supercritical ethane at 80 °C and 80−120 bar, with methanol as cosolvent. Solvated electrons, produced by a pulse of 20 MeV electrons, reduced the silver ions. The time-resolved technique of pulse ...
Tools
-
Add to Favorites
-
Download Citation
-
Email a Colleague -
Permalink
Order Reprints
Rights & Permissions
Citation Alerts
SciFinder Links
Explore by:
History
- Published In Issue January 28, 1999
- Received October 1, 1998
ACS
Network
Facebook
Tweet This
CiteULike
Newsvine
Digg This
Delicious
