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Phase behavior of propane and n-pentane aerosol particles under conditions relevant to Titan

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Publication details

JournalPlanetary and space science
DateE-pub ahead of print - 31 Oct 2012
DatePublished (current) - Jan 2013
Volume75
Number of pages13
Pages (from-to)56-68
Early online date31/10/12
Original languageEnglish

Abstract

The phase behavior of propane and n-pentane aerosols was studied under conditions relevant to Titan's atmosphere. Pure propane or n-pentane aerosols and mixed aerosols (mixed with either acetylene, carbon dioxide, or water aerosols) were generated in a bath gas cooling cell. The phase behavior of the aerosols was studied using infrared spectroscopy. Pure propane aerosols remained in a disordered phase during the timescale of the experiment, whereas n-pentane aerosols underwent a phase transition from an initially disordered phase into a crystalline phase. For the homogeneous crystallization of n -pentane aerosols in a nitrogen bath gas the surface and volume nucleation constants were found to range from 1012 to View the MathML source and from 1011 to View the MathML source, respectively. The presence of solid acetylene, carbon dioxide, or water aerosols did not affect the phase behavior of propane aerosols but significantly accelerated the crystallization of n-pentane aerosols with acetylene aerosols acting as the most efficient crystallization nuclei.

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cited By 1

    Research areas

  • Titan, Hydrocarbons, Propane, n-Pentane, Aerosols, IR-spectroscopy

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