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    The Effect of N2O, Catalyst, and Means of Water Vapor Removal on the Graphitization of Small CO2 Samples

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    Author
    Smith, A. M.
    Petrenko, Vasilii V.
    Hua, Quan
    Southon, John
    Brailsford, Gordon
    Issue Date
    2007-01-01
    
    Metadata
    Show full item record
    Citation
    Smith, A. M., Petrenko, V. V., Hua, Q., Southon, J., & Brailsford, G. (2007). The effect of N2O, catalyst, and means of water vapor removal on the graphitization of small CO2 samples. Radiocarbon, 49(2), 245-254.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    Description
    From the 19th International Radiocarbon Conference held in Keble College, Oxford, England, April 3-7, 2006.
    URI
    http://hdl.handle.net/10150/653758
    DOI
    10.1017/S003382220004217X
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    The effect of nitrous oxide (N2O) upon the graphitization of small (~40 g of carbon) CO2 samples at the ANSTO and University of California, Irvine, radiocarbon laboratories was investigated. Both laboratories produce graphite samples by reduction of CO2 over a heated iron catalyst in the presence of an excess of H2. Although there are significant differences between the methods employed at each laboratory, it was found that N2O has no effect upon the reaction at levels of up to 9.3% by volume of CO2. Further, it was systematically determined that more effective water vapor trapping resulted in faster reaction rates. Using larger amounts of the Fe catalyst generally resulted in higher yields or reaction rates (but not both). The effects of changing the type of Fe catalyst on the final yield and reaction rate were less clear.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S003382220004217X
    Scopus Count
    Collections
    Radiocarbon, Volume 49, Number 2 (2007)

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