Home » Quantachrome » High pressure gas sorption analyzer

High pressure gas sorption analyzer

High pressure adsorption measurements are important in the fields of carbon dioxide sequestration, methane storage, hydrogen storage, and gas separation. The iSorb-HP instruments (volumetric sorption apparatus) generate automatic measurements of full adsorption and desorption isotherms over a wide range of pressures and temperatures.The iSorb series is a family of four such high pressure sorption analyzers; one and two-sample models each available with an upper pressure limit of 100bar or 200bar, complete with built in vacuum pumps and sample degassing capability. All models feature pressure transducers both in the dosing manifold and on the sample cell for maximum sensitivity; this also provides the iSorb-HP2 model the capability to simultaneously analyze two samples.Measurements are defined in terms of pressure or dose amount for both adsorption and desorption, equilibrium criteria, sample temperature (according to the heating /cooling device selected) and choice of equation of state (EoS)*:
Request a quote click hereHigh pressure gas sorption analyzer, the iSorb HP
  • Schmidt-Wenzel type, defined in terms of Helmholtz free energy (NIST recommended)
  • MBWR (Modified Benedict-Webb-Rubin type, Jacobsen 32-coefficients, NIST recommended).
  • Lee-Kesler (generalized Benedict-Webb-Rubin).
  • Peng-Robinson
  • Soave-Redlich-Kwong
  • Redlich-Kwong
  • Van der Waals
  • Ideal gas

Analysis temperatures are achieved either by recirculator bath (-20oC to 100oC, see below), cryocooler (77K-320K), or heating mantle (up to 400oC).

This excess adsorption isotherm goes through a maximum. Click to enlargeUsing the correct equation of state (EOS) is essential. Click to enlarge.

 

pdfBrochure Specifications Technology
BoosterGas pressure booster increases cylinder pressure from 55bar to 200bar.

This compensates for the drop in pressure from a standard laboratory cylinder as gas is used for analyses and ensures a constant supply of high pressure gas.

RecirculatorIsotherms can be measured from -20 to +100C with this recirculator.

This liquid chiller/heater
/circulator provides stable sample temperatures from -20oC up to 100oC set via PC. Includes jacketed cell.

CryoCoolerCryoCooler

Cryogen-free sample thermostating option for the iSorbHP. The Cryo-Cooler allows gas sorption studies to be run at temperatures between 77K to 320K.

Distributor’s page:

 

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QUANTACHROME GmbH & Co. KG
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Tel: 08 134/93240
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