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Review date: July 24, 2003
PNNL-SA-27883

A New Apparatus for the Convenient Measurement of NMR Spectra in High-Pressure Liquids

CR Yonker, TS Zemanian, SL Wallen, JC Linehan, and JA France. J. Magnetic Resonance, Series A 113:102-107 (1995).

Abstract: A novel design is presented for a high-pressure NMR cell using fused silica capillary tubing. The capillary tubing is bent to form multiple loops for use in a 5 mm NMR tube in a conventional solution NMR probe. The NMR cell design eliminates explosion hazards at high pressures and makes possible simple sample loading and observation of reaction mixtures at variable pressures (up to 4 kbar) and temperatures. A chamber for the mixing and flow introduction of reaction mixture is provided. Examples of application of the cell for ¹H, ¹²⁹Xe, and ¹⁹F studies of supercritical fluids, near-critical liquids, and high-pressure organometallic reactions are presented.