Thermal balance

Thermal balance to determine the water vapour adsorption capacity of large composite samples as a function of pressure and temperature.

ServiceLab Thermochemical and Porous Materials


Knowledge of precise thermophysical parameters, such as heat capacity and thermal conductivity, is crucially important in many thermal systems, particularly heat pumps and chillers.

A particular emphasis of work at the ServiceLab Thermochemical and Porous Materials therefore lies in evaluating and characterizing porous materials for sorption applications, including zeolites, silica gels, silicoaluminophosphates (SAPOs), aluminum phosphates (AlPOs), metal-organic frameworks (MOFs) and activated carbon.

As part of our characterization services, we analyze pore structure and surfaces using gas adsorption and mercury porosimetry. We further evaluate how the porous materials adsorb various media (e.g. refrigerants), such as water, methanol, ethanol, propane/propene, as a function of temperature and pressure/humidity.

In addition, we are able to analyze heat capacity, measure surface structures and particle sizes on the nanoscale using laser microscopy, analyze crystal structures by means of X-ray powder diffraction (XRD) and determine framework density using a helium pycnometer.

The analysis lab draws together the longstanding experience gained at Fraunhofer ISE in analyzing and characterizing different materials.

Please contact us. We would be happy to advise you on selecting the most suitable analysis methods.


Pore and Surface Area Analysis

Techniques such as gas adsorption that provide information on pore volume, inner surface area and pore size distribution.

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Adsorption Analysis

All time-resolved experimental methods that record the adsorbed volume of adsorbates, such as water, ethanol, methanol, etc., as a function of temperature and adsorptive pressure.

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Morphology / Structural Analysis

Methods of analysis that provide information on the crystal structure of crystalline materials as well as the size, quantity, form and structure of crystallites or macroscopic particles. These include optical and laser microscopy as well as crystal structure analyses by means of X-ray diffraction.

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Thermophysical Analysis

Analysis techniques that provide information on the thermophysical properties of materials, such as their thermal diffusivity and conductivity, specific heat capacity, true or apparent relative density, and enthalpies of reaction or transition.

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Stress, Stability and Aging Tests

Analysis methods that provide information on the mechanical and hydrothermal stability of sorbents and composites.

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Contact Press / Media

Dr. Stefan Henninger

ServiceLab Thermochemical and Porous Materials

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5104

Fax +49 761 4588-9104