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Updated: Mar 26, 2026

High-pressure Sapphire Cell for Phase Equilibria Measurements of CO2/Organic/Water Systems
Published on: January 24, 2014
Note: A dual temperature closed loop batch reactor for determining the partitioning of trace gases within CO2-water
Oliver Warr1, Christopher A Rochelle2, Andrew J Masters3
1Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, United Kingdom.
Abstract:
An experimental approach is presented which can be used to determine partitioning of trace gases within CO2-water systems. The key advantages of this system are (1) The system can be isolated with no external exchange, making it ideal for experiments with conservative tracers. (2) Both phases can be sampled concurrently to give an accurate composition at each phase at any given time. (3) Use of a lower temperature flow loop outside of the reactor removes contamination and facilitates sampling. (4) Rapid equilibration at given pressure/temperature conditions is significantly aided by stirring and circulating the water phase using a magnetic stirrer and high-pressure liquid chromatography pump, respectively.
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