Technical Adsorbents

adsorbents, chemical plant

Technical Adsorbents

Technical adsorbents are either already used in adsorption processes or are highly suitable for such applications based on earlier development successes. In order to evaluate materials for their suitability towards technical adsorption, we are differentiating between two analytical methods and parameters:

  • Standard- / Texture-Analysis (such as BET-surface area and pore size distribution)
  • Technical availability of adsorption capacity (measured under real or close to real conditions of analytical gases and mixtures as well as pressure and temperature)

Technical adsorbents include activated carbons and cokes, zeolites, molecular sieves, silica gels and activated clay soils. Metal-organic frameworks (MOFs) as well as other synthetic, high-porous materials, an extra category can be found on this homepage under the field of applications for “Synthetic Adsorbents and MOFs”. Technical adsorbents as a whole are used in industrial practices mostly in the form of granules, while their development in research usually results in powders. The article “Dynamic and equilibrium-based investigations of CO2-removal from CH4-rich gas mixtures on microporous adsorbents” published in Adsorption by A. Möller et al. features the combination of characterizing pure-gas isotherms under sub-ambient pressures (analytical device AUTOSORB iQ) and under high pressure conditions (analytical device iSORB-HP) with breakthrough measurements carried out with the dynaSorb BT.

Analytical methods for technical adsorbents

Gas adsorption BET-surface area and pore analysis 3P micro series
3P meso series
3P sync series
3P surface DX
Breakthrough curves Mixture adsorption of gases and vapors mixSorb L
mixSorb S
mixSorb SHP
Mercury porosimetry Pore analysis (pore volume, pore size distribution, raw density) contract analysis
Chemisorption (static-volumetric and dynamic) as well as TPR/TPD/TPO and other temperatur-programmed reactions Active surface area, temperature dependent adsorption, desorption and other reaction data AMI-300 series
BenchCAT series
µBenchCAT series
Laser diffraction (wet or dry) Particle size of powder Bettersizer S3 Plus
Bettersizer S3
Bettersizer 2600
Bettersizer ST
Image analysis Particle shape BeVision D2
Bettersizer S3 Plus
DLS – dynamic light scattering

(Photon correlation)

Particle size in nanometer ranges Nanoptic 90 Plus
Acoustic spectrometry Particle size in micrometer and nanometer ranges in concentrated dispersions DT-1202
Electro acoustic Zeta potential DT-1202
Gas pycnometriy Density 3P densi 100
Tap volumetry Tap density BeDensi T series


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