Evaluation of Microporosity, Pore Tortuosity, and Connectivity of Montmorillonite Solids Pillared with LaNiOx Binary Oxide. A Combined Application of the CPSM Model, the αs-Plot Method and a Pore Percolation-Connectivity Model

Salmas, CE; Ladavos, AK; Skaribas, SP; Pomonis, PJ; Androutsopoulos, GP

dc.contributor.author	Salmas, CE	en
dc.contributor.author	Ladavos, AK	en
dc.contributor.author	Skaribas, SP	en
dc.contributor.author	Pomonis, PJ	en
dc.contributor.author	Androutsopoulos, GP	en
dc.date.accessioned	2014-03-01T01:18:58Z
dc.date.available	2014-03-01T01:18:58Z
dc.date.issued	2003	en
dc.identifier.issn	07437463	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15286
dc.subject.other	Hysteresis	en
dc.subject.other	Microporosity	en
dc.subject.other	Pore size	en
dc.subject.other	Pore tortuosity	en
dc.subject.other	Lanthanum compounds	en
dc.title	Evaluation of Microporosity, Pore Tortuosity, and Connectivity of Montmorillonite Solids Pillared with LaNiOx Binary Oxide. A Combined Application of the CPSM Model, the αs-Plot Method and a Pore Percolation-Connectivity Model	en
heal.type	journalArticle	en
heal.identifier.primary	10.1021/la034913t	en
heal.identifier.secondary	http://dx.doi.org/10.1021/la034913t	en
heal.publicationDate	2003	en
heal.abstract	The present work deals with the comparative application of the CPSM (corrugated pore structure model), the αs plot and the pore connectivity methods for pore structure analysis and especially the detection of microporosity of a category of montmorillonite clays pillared with LaNiOx binary oxide. A quite good agreement between the corresponding results deduced from the three methods was confirmed. The raising of the LaNiOx content caused a change of pore volume, surface area, and microporosity whereas the relevant curves pass through a maximum. The CPSM model, through the simulation of gas sorption hysteresis, enables the evaluation of unified mesomicropore size distributions, pore surface areas, tortuosity factors, τCPSM, and relative microporosities. It is also concluded that pore tortuosity, (τCPSM), is inversely proportional to the pore connectivity factor (c), and the nominal pore length (Ns) (i.e., a CPSM parameter) is proportional to the number of pore lengths (L) (i.e., a parameter of the pore connectivity model).	en
heal.journalName	Langmuir	en
dc.identifier.doi	10.1021/la034913t	en
dc.identifier.volume	19	en
dc.identifier.issue	21	en
dc.identifier.spage	8777	en
dc.identifier.epage	8786	en