Pore structure analysis of an SCR catalyst using a new method for interpreting nitrogen sorption hysteresis

Salmas, CE; Androutsopoulos, GP

dc.contributor.author	Salmas, CE	en
dc.contributor.author	Androutsopoulos, GP	en
dc.date.accessioned	2014-03-01T01:16:57Z
dc.date.available	2014-03-01T01:16:57Z
dc.date.issued	2001	en
dc.identifier.issn	0926-860X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14287
dc.subject	pore structure	en
dc.subject	nitrogen sorption	en
dc.subject	SCR catalyst	en
dc.subject	CPSM model	en
dc.subject	tortuosity	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	Catalysis	en
dc.subject.other	Hysteresis	en
dc.subject.other	Mathematical models	en
dc.subject.other	Nitrogen	en
dc.subject.other	Pore size	en
dc.subject.other	Porosimeters	en
dc.subject.other	Porous materials	en
dc.subject.other	Reduction	en
dc.subject.other	Sorption	en
dc.subject.other	Corrugated pore structure model (CPSM)	en
dc.subject.other	Pore volume distribution	en
dc.subject.other	Selective catalytic reduction (SCR)	en
dc.subject.other	Surface area distribution	en
dc.subject.other	Tortuosity	en
dc.subject.other	Catalysts	en
dc.title	Pore structure analysis of an SCR catalyst using a new method for interpreting nitrogen sorption hysteresis	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0926-860X(00)00814-0	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0926-860X(00)00814-0	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Nitrogen sorption hysteresis of a selective catalytic reduction (SCR) catalyst in its "fresh" and "used" form. [Catal. Today 56 (2000) 335] was analysed by employing the Corrugated Pore Structure Model (CPSM-nitrogen) reported elsewhere [Ind. Eng, Chem. Res. 39 (2000) 3747 and Ind. Eng. Chem. Res., 39 (2000) 3764]. The BET surface area and intrinsic pore volume, and surface area distributions were deduced via the CPSM fitting over the relevant hysteresis loop and compared to those obtained by applying various conventional methods. CPSM predictions of the total specific pore surface area, are in perfect agreement with BET estimates, while those calculated by the Roberts method, irrespective of the hysteresis loop branch chosen, deviate substantially. CPSM prediction of tortuosity factors (CPSM-tortuosity [Ind. Eng. Chem. Res., in press]) for the catalysts under consideration were found to be: tau (CpSM,fresh) = 4.6 and 4.5. These values are typical of porous catalysts and approach those determined experimentally (i.e, tau = 5-6 [Appl. Catal. 10 (1996) 2991). The pore volume distribution of the latter catalyst obtained from mercury porosimetry measurements approaches that deduced by the CPSM method. (C) 2001 Elsevier Science B,V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Applied Catalysis A: General	en
dc.identifier.doi	10.1016/S0926-860X(00)00814-0	en
dc.identifier.isi	ISI:000167525900032	en
dc.identifier.volume	210	en
dc.identifier.issue	1-2	en
dc.identifier.spage	329	en
dc.identifier.epage	338	en