Low pressure gas adsorption isotherm system and Instruments

The system determines the adsorption isotherm for a combination of adsorbate (e.g. methane, CO2) and adsorbent (coal, shale, etc.). In other words, the apparatus evaluates at equilibrium the maximum volume of gas adsorbed onto an adsorbent at a specific temperature and pressure. This is achieved by means of the isothermal volumetric method in which the pressures and volumes of reference and test cells held at constant temperature are continuously monitored.

The apparatus comprises two sample cells, one reference cell, three pressure transducers and a thermostatic bath. An Excel spreadsheet is provided to input the pressure and temperature readings and generate the adsorption isotherm report.

Maximum pressure :

• 1,800 psi

Maximum temperature :

• 120°C

Sample cell volume :

• 100 ml

Reference cell volume :

• 300 ml

Material :

• Stainless steel

Test gas supply :

• 2,000 psi

Helium gas supply :

• 2,000 psi

Power supply :

• 110-220 VAC, 50/60 Hz

• Cost effective
• Easy to use