Mandate Analysis        
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A priori it is not always clear what kind of analysis method is the best to characterize a material of interest. In case of only a limited number of analysis the purchase and maintenance of an instrument might be not reasonable.
Therefore POROTEC offers besides purchasing selling analytical instruments for microstructure- and surface analysis the possibility of mandate analysis in our application lab.

         
         
  news.gif (597 Byte) Mercury Porosimetry
  Determination of porous pore volume, pore size distribution, surface and hysteresis according to DIN 66133, determination of mercury-density according to DIN 51065. Additional determination of the agglomerate volume and calculation of particle size distribution (2nd run).
         
 
Range Pascal 140 Pascal 240 Pascal 440 Pascal Ultramacropore
Pressure 13 kPa - 400 kPa 13 kPa - 200 MPa 13 kPa - 400 MPa 2,5 kPa - 400 kPa
Pore radius 1,9 µm - 58 µm 3,7 nm - 58 µm 1,8 nm - 58 µm 1,9 µm - 300 µm
Particle size 7 µm - 200 µm 7 nm - 200 µm 7 nm - 200 µm 7 µm - 2000 µm
         
         
       Porometry
Instrument Porolux 1000
pore size analysis for membranes, filters and other media
in the por size range from 14nm bis 300µm equivalent diameter.
Determination of Bubble point, maximum pore size, mean flow pore size, minimum pore size, complete pore size distribution, pore number distribution, permeability.
         
         
  news.gif (597 Byte) Temperature Programmed Desorption TPD
Range: 40 - 1100°C, Heating rates: 1 - 20°C/min
  Sample preparation with standard gases (H2 - O2 - CO2 - NH3)
Measurement of temperature dependent desorption in the carrier gas (Ar - N2 or He)
Determination of catalyst surface area. Degree of dispersion, and the average particle diameter.
         
  news.gif (597 Byte) Temperature Programmed Oxidation/Reduction TPO/TPR
Range: 40 - 1100°C, Heating rates: 1 - 20°C/min
  Reduction and oxidation of the sample with gas blends (H2 in Ar or O2 in He)
Measurement of the temperature dependent  reaction.
Determination of the total amount of metal.
         
  news.gif (597 Byte) Puls- Chemisorption
  Sample preparation with oxidation and reduction.
Measurement of the metal surface area with pulses of the adsorptive in an inert carrier gas (Ar, N2 or He) until saturation.
Determination of catalyst surface area. Degree of dispersion, and the average particle diameter.
         
         
  news.gif (597 Byte) Gasadsorption
  B.E.T. Surface Area
  Multi-point determination of the BET surface area by means of N2 - adsorption at 77K according to DIN 66131
Determination of very low surface area by means of Krypton adsorption at 77K
 
  Adsorptions Isotherms
  Measuring gas Nitrogen on 77 K, Adsorption and Desorption
  Multiple point determination of meso pore size distribution according to DIN 66134 from the adsorption and desorption branch of the isotherm, total pore volume and micropore analysis according to DIN E66135 from the adsorption isotherm
  Measuring gas Argon on 87 K, Adsorption
  Multiple point determination. determination of meso pore size distribution according to DIN 66134, BET-surface according to DIN 66131, total pore volume, and Micropore analyses according to E-DIN 66135 
 
  Chemisorption
  Measuring gases CO, H2, O2 (bis max. 450°C), Adsorption
  Determination of active surface area of a catalyst, the metal surface area, dispersion degree and mean particle diameter
 
 
  news.gif (597 Byte) Helium Density
  Determination of the true density of a (porous) sample with a helium Pycnometer
 
 
  news.gif (597 Byte) Dynamic Water- and Solventsorption (adsorption)
  Water vapour isotherms until  96% relative humidity with approx. 10 different humidities (higher resolution on request) in a temperature range from 0 to 85°C.
Additional adsorption cycles to proof the reversibility of the adsorption process.
         
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