Supercritical Fluids
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About Supercritical Fluid
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      High-pressure NMR
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    Ion-water structure in hydrothermal water
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    Review date: July 24, 2003
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    Resources at PNNL

    PNNL's experts are actively doing research in supercritical fluids with access to state-of-the-art facilities and equipment. PNNL maintains world-class facilities for spectroscopic studies of fluids including carbon dioxide, ehtane, ethylene, CFCs, xenon, sulfur hexafluoride, ammonia, and water. Additional resources available include the Environmental Molecular Science Laboratory (EMSL), the Applied Process Engineering Laboratory (APEL), and Battelle's Columbus Laboratory.

    50 ml high-pressure view cell with 1 kbar and 500°C rating
    50 ml high-pressure view cell with 1 kbar and 500°C rating
    The following are some of the equipment used in our research:

    • Transmission and reflectance FT-IR
    • Raman
    • UV-vis and fluorescence
    • NMR
    • Small angle x-ray scattering
    • X-ray absorption fine structure
    • Quasi-elastic light scattering
    One of several liter-sized autoclaves at PNNL
    One of several liter-sized autoclaves
    The following conditions are available:
    • 25-500 °C
    • 1-600 bar (capillary studies to 5 Kbar)
    • Highly corrosive solvents
    There is broad diversity of resources at PNNL for conducting a variety of different types of studies of supercritical fluids. The available equiment includes numerous benchtop systems and a well-equiped pilot-scale facility.
    Autoclave
    Pilot- scale parts-cleaning autoclave
     

    For information about supercritical fluid capabilities at PNNL,
    please contact Clement Yonker, at (509) 372-4748, clem.yonker@pnl.gov.