(583e) Use of a Novel Volumetric Differential Pressure Apparatus for Adsorption Equilibrium Measurements
AIChE Annual Meeting
Wednesday, November 13, 2019 - 4:50pm to 5:10pm
The system is designed to measure high pressure adsorption isotherms up to 270 bar. It is equipped with a differential and an absolute pressure transducer as well as thermocouples to measure the temperature of the dosing and the uptake volumes, including the direct measurement of the sample temperature. The system is designed with a focus on minimising the volumes, allowing accurate equilibrium and kinetic measurements with less than 100 mg of sample. In addition, the apparatus is designed to be completely modular. This allows to easily modify the system to adapt the volumes (enlarging the volumes if necessary, for example) or to change the setup in different configurations.
We present the detailed design of the experimental apparatus as well as the methodology to accurately calibrate the volumes and carry out reliable adsorption equilibrium measurements.
To validate the system we have carried out experiments on reference adsorbents using different gases in a range of experimental conditions. We also highlight the advantages and disadvantages of using the system in two different configurations.