Chemisorption is used to quantitatively measure the number of surface active sites which are used to promote a specified catalytic reaction. Critical parameters for chemisorption measurement are: the area of the active element, metal dispersion, surface acidity, exposed proportion of the active element.
We offer two instrumental techniques for chemisorption analysis, the static volumetric technique and the dynamic (flowing gas) technique. The former technique is performed by the Micromeritics ASAP 2020Plus, which operates over a range of pressures. The dynamic chemisorption technique is utilized by the 3Flex Chemi, Chemisorb and AutoChem series of instruments. These three instruments utilize pulse chemisorption in a dynamic flow system to titrate the active surface.