Isotherms are typically collected using static adsorption measurements as it is both easier and faster than collecting isothermal data on a breakthrough system. Static measurements, however, cannot mimic flows or gas impurities, and for this reason it may be necessary to collect breakthrough data at varying pressures to analyze and optimize your process. This application note will target how changing pressure can impact the quantity adsorbed by a material and how measuring breakthrough curves at different pressures would allow a user to construct an isotherm. Isotherms determined via breakthrough analysis will never correlate exactly with those that are produced using static adsorption measurements. The impact of flow can have a drastic effect on the adsorption isotherm, especially when pressure drop or mass transfer limitations are involved.
Isotherms are typically collected using static adsorption measurements as it is both easier and faster than collecting isothermal data on a breakthrough system. Static measurements, however, cannot mimic flows or gas impurities, and for this reason it may be necessary to collect breakthrough data at varying pressures to analyze and optimize your process. This application note will target how changing pressure can impact the quantity adsorbed by a material and how measuring breakthrough curves at different pressures would allow a user to construct an isotherm. Isotherms determined via breakthrough analysis will never correlate exactly with those that are produced using static adsorption measurements. The impact of flow can have a drastic effect on the adsorption isotherm, especially when pressure drop or mass transfer limitations are involved.
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