Investigation of some Pore Size Distribution Measurement Methods for Porous Material and Determination the Best Method for Four Industrial Adsorbent

Reliable prediction of the heterogeneous solid adsorbents pore size distribution (PSD) is the key element in the design and operation of all adsorption processes. At first in this work a brief investigation about formulation of some PSD measurement techniques (BJH,NLDFT,HK and SHN1) have been done.In order to make comparison between the performance of these methods, computational methods have been employed to determine the PSD of four specific adsorbents(SBA-15, ZSM-5, MCM-41/A and Activated carbon).results showed that BJH and NLDFT method has been successfully applied to adsorbents covering a wide range of pore diameter. Using of HK and SHN1 had a suitable response for micro-pores adsorbent. In addition SHN1 method requires less mathematical calculations and physical information and hence can be easily employed for determining PSD for micro-pores adsorbents. NLDFT method in comparsion with SHN1 method, present a more accurate result for meso-pores material.