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 and under high pressure conditions with breakthrough measurements.

Analytical methods for technical adsorbents

ANALYSIS METHODPARAMETERMEASURING INSTRUMENT
Gas adsorptionBET-surface area and pore analysis3P micro series
3P meso series
3P sync series
3P surface DX
Breakthrough curvesMixture adsorption of gases and vaporsmixSorb L series
mixSorb series
Mercury porosimetryPore analysis (pore volume, pore size distribution, raw density)Contract analysis
Dynamic vapor sorption – DVSWater uptake and -release3P graviSorb series
Chemisorption (static-volumetric and dynamic) as well as TPR/TPD/TPO and other temperatur-programmed reactionsActive surface area, temperature dependent adsorption, desorption and other reaction dataAMI-300 series
BenchCAT series
µBenchCAT series
Laser diffraction (wet or dry)Particle size of powdersBettersizer S3 series
Bettersizer 2600
Bettersizer ST
Image analysisParticle shapeBeVision D2
Bettersizer S3 Plus
DLS – dynamic light scattering (Photon correlation)Particle size in nanometer rangesBeNano series
Acoustic spectrometryParticle size in micrometer and nanometer ranges in concentrated dispersionsDT-1202
DT-100
Electro acousticsZeta potentialDT-1202
DT-310
DT-300
Gas pycnometryDensity3P densi series
Tap volumetryTap densityBeDensi T series
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