A self-consistent method to determine accessible volume, area and pore size distribution (APSD) of BPL, Norit and AX-21 activated carbon

Luis Herrera Diaz, Chunyan Fan, Tuong Vi B Nguyen, Duong Do, T. Horikawa, D. Nicholson

Research output: Contribution to journalArticle

Abstract

Accessible volume, geometrical area and accessible pore size distribution are the fundamental structural parameters in the characterization of porous solids. We provide a novel "inverse" procedure, which is based on the mass balance and an MC optimization scheme, to determine these parameters from the analysis of experimental adsorption isotherms for a number of commonly used activated carbons: BPL, AX-21 and Norit. Our results, based on a kernel of model pores generated from GCMC simulations, are compared with, and shown to be different from, the results obtained from the conventional method. We show that the discrepancies arise from an incorrect evaluation of both micropore and mesopore sizes.

Original languageEnglish
Pages (from-to)500-509
Number of pages10
JournalCarbon
Volume50
Issue number2
DOIs
Publication statusPublished - Feb 2012
Externally publishedYes

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