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Application of Mercury Intrusion Porosimetry for Characterization of Combined Micro‐ and Mesoporous Zeolites
Author(s) -
Groen Johan C.,
Brouwer Sander,
Peffer Louk A. A.,
PérezRamírez Javier
Publication year - 2006
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.200601010
Subject(s) - mesoporous material , porosimetry , macropore , mercury intrusion porosimetry , mercury (programming language) , materials science , porosity , chemical engineering , adsorption , intrusion , mineralogy , chemistry , porous medium , composite material , geology , computer science , organic chemistry , catalysis , geochemistry , engineering , programming language
Combined micro‐ and mesoporous ZSM‐5 zeolites with different mesopore sizes have been comparatively investigated using mercury‐intrusion porosimetry (MIP) and N 2 gas adsorption. N 2 adsorption and MIP complement each other and a fairly good correlation has been obtained for the mesopore sizes and volumes derived from both techniques, confirming an adequate accessibility of the newly created mesoporosity. Elastic compression of the mesoporous zeolites during the mercury‐intrusion experiments can account for the somewhat smaller average mesopore size and mesopore volume as derived from this technique. An excellent reproducibility of multiple mercury‐intrusion cycles proves the mechanical stability of the hierarchical porous zeolites. Besides, MIP provides supplementary information on the presence of macropores.