Center for Materials and Sensor Characterization

Accelerated Surface Area and Porosimetry System

asap2020The ASAP 2020 (Accelerated Surface Area and Porosimetry System) provides versatility in gas selection and high vacuum for high-resolution low surface area measurements. It utilizes the principle of physical adsorption or chemical adsorption to obtain adsorption and desorption isotherms and information regarding the surface area and porosity of a solid material. The surface area analyses plus pore size and pore volume distributions are performed using UHP nitrogen as the standard gas. Parameters such as BET and Langmuir surface areas, average and total pore volume, BJH pore size distribution and micro-pore analysis can be determined using this instrument. It employs a range of standard theories for the calculations such as Horvath-Kawazoe, Dubinin-Radushkevich, Dubinin-Astakov, t-plot, MP-method, BET, Langmuir and Density Functional Theory. The specifications include:

  • Measurement of surface area down to 0.0005 sq.m/g
  • Pore diameters in the range of 3.5 to 5000 A
  • Micropore volumes up to 0.0001 cc/g
  • It requires about 1 gm of the sample. The sample tube stems are 1/2 in in diameter with 9 cubic cm bulbs
  • The various gases that can be used are N2, O2, Ar, Kr, CO2, H2
  • Chemisorption accessory is also available
Last Updated: 6/27/22