Onsager heat of transport of carbon dioxide at the surface of aqueous ammonia: The remarkable effect of carbamate formation

Daniel M. Packwood, Leon F. Phillips

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    The Onsager heat of transport Q has been measured for CO2 at the surface of aqueous ammonia. The heat of transport incorporates the enthalpy of reaction of gaseous CO2 with ammonia, adsorbed on the liquid surface, to form adsorbed ammonium carbamate, with the result that -Q has the unusually large value of 180 kJ mol-1. Measurement of Q for transfer of a reactive species through a surfactant monolayer is proposed as a new method of studying reactions at liquid and quasi-liquid surfaces.

    Original languageEnglish
    Pages (from-to)120-122
    Number of pages3
    JournalChemical Physics Letters
    Volume500
    Issue number1-3
    DOIs
    Publication statusPublished - 2010 Nov 10

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Physical and Theoretical Chemistry

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