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Finding Ionizable Phase transition agent with low phase change energy

  1. May 30, 2013 #1


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    Hello everyone,

    I'm designing an experiment which utilizes a single agent in different phases (liquid, gas, and plasma). The apparatus needs to be able to ionize the gas into a plasma (with +/ - 1 or more electrons). I'm trying to keep energy consumption at a minimum, so current phase transition agents like refrigerants wouldn't (presumably) be suitable because of their inherently high phase transition energy.

    My task right now is to find or formulate an "ionizable phase transition agent with a low phase transition energy"

    Desired Agent Properties:
    • Phase transtiton temperatures around that of common refrigerants
    • Ionizable in gas phase with low ionization energy
    • preferably non-toxic, non-explosive and non-corrosive
    • Low phase transition energy

    I'm curious what indications chemists have when looking at a molecular diagram that the agent will have good properties for use in refrigeration, etc... I notice lots of use of carbon and elements with +1 or -1 valence electrons. Is there a correlation between phase transition temperatures, phase transition energy and the use of elements with +/- 1 valence electron?

    I'm a mechanical engineer with limited chemistry experience. I would appreciate some guidance in how to find or formulate an agent with these properties.

    I appreciate your time,
  2. jcsd
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