High Pressure Probes for Pressurized Gases

The gas flow rates are adjusted to ensure a constant pressure inside the cell and to minimize degradation of the spectral resolution by the gas bubbles. Typical line-widths at half height are 4 Hz on NMR (200 MHz) and 2 Hz on (80.3 MHz). The probe fits into the room temperature shims of a wide-bore NMR magnet and the pressure and temperature range of the high pressure NMR flow are 0.1 to 20 MPa and -40 to 175 °C, respectively. 

Iggo and coworkers have studied the asymmetric copolymerisation of styrene with CO catalyzed by Pd-(R,S)-BINAPHOS complexes under both diffusion- and 

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This type of high pressure NMR flow cell is specially convenient for mechanistic studies in gas-liquid reactions [61-69]. 

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