[en] The mechanism of mercury penetration in two different commercial carbon blacks is studied. We show that the volume variation measured by mercury porosimetry in these systems is due to three successive mechanisms, which occur as the pressure increases: (1) mercury invasion of voids between macroscopic grains, (2) compaction and elastic compression of macroscopic grains, (3) intrusion in the voids of aggregates formed by primary particles. The cumulative surface calculated by the Rootare-Prenzlow equation (S-RP) in the intrusion part and the BET surface area measured by nitrogen adsorption (S-BET) are compared. (C) 1999 Academic Press.
Disciplines :
Materials science & engineering Chemical engineering
Author, co-author :
Pirard, René ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Chimie physique appliquée
Sahouli, Bendida; Université de Liège - ULiège > Département de Chimie appliquée > Génie chimique - Chimie physique appliquée
Blacher, Silvia ; Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Pirard, Jean-Paul ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Chimie physique appliquée
Language :
English
Title :
Sequentially compressive and intrusive mechanisms in mercury porosimetry of carbon blacks
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