XEMIS-001 Next generation pure gas gravimetric sorption analyzer

Hiden Isochema’s unique IGA method is applied independently to every step in a gravimetric sorption measurement. At each step, the pressure and temperature are actively regulated, with resultant changes in sample weight continuously recorded.

The kinetic weight data is analyzed in real-time, and the trend toward equilibrium is predicted and displayed on screen. Equilibration criteria are applied to objectively determine the period allowed before the measurement moves on to the next pressure or temperature value. Each equilibrium point is plotted on an isotherm or isobar, and the full raw data is also recorded.

The IGA method therefore allows consistent analysis with optimum measurement accuracy and faster overall process times.

BENEFITS OF XEMIS

• Widest controllable pressure range of any gravimetric sorption analyzer: active pressure regulation over 7 orders of magnitude
• Unique Exosensing Technology for operation with aggressive species
• Optimized performance for sample sizes from 1 mg to 5 g

APPLICATIONS

Typical applications include:

• Carbon capture and storage
• Hydrogen and natural gas storage
• Gas solubility in ionic liquids
• Nanoporous material characterization
• Gas sorption on geological materials

APPLICATION DATA

Kinetic data

Kinetics of hydrogen absorption by palladium at 303 K and 40 mbar

Adsorption isotherms

Nitrogen, carbon dioxide and sulphur dioxide adsorption isotherms on a MOF across a broad pressure range. Data reproduced with permission from John Wiley and Sons.

Methane adsorption

Methane adsorption by a shale at high temperature and pressure

Sulfur dioxide adsorption

Sulfur dioxide adsorption by a metal organic framework (NOTT-300)