Evaluation of microporosity, pore tortuosity, and connectivity of montmorillonite solids pillared with LaNiOx binary oxide. A combined application of the CPSM model, the alpha(s)-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	2014-03-01T01:53:06Z
dc.date.available	2014-03-01T01:53:06Z
dc.date.issued	2003	en
dc.identifier.issn	0743-7463	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/26857
dc.subject.classification	Chemistry, Physical	en
dc.subject.other	MERCURY POROSIMETRY HYSTERESIS	en
dc.subject.other	NITROGEN SORPTION MEASUREMENTS	en
dc.subject.other	SIZE DISTRIBUTIONS	en
dc.subject.other	POROUS SOLIDS	en
dc.subject.other	ADSORPTION	en
dc.subject.other	TOMOGRAPHY	en
dc.subject.other	PREDICTION	en
dc.subject.other	ISOTHERMS	en
dc.subject.other	CATALYSTS	en
dc.subject.other	CARBONS	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 alpha(s)-plot method and a pore percolation-connectivity model	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	The present work deals with the comparative application of the CPSM (corrugated pore structure model), the a. 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, tau(CPSM), and relative microporosities. It is also concluded that pore tortuosity, (tau(CPSM)), is inversely proportional to the pore connectivity factor (c), and the nominal pore length (N-s) (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.publisher	AMER CHEMICAL SOC	en
heal.journalName	LANGMUIR	en
dc.identifier.isi	ISI:000185831800026	en
dc.identifier.volume	19	en
dc.identifier.issue	21	en
dc.identifier.spage	8777	en
dc.identifier.epage	8786	en