Diffusional effects and intrinsic kinetics for NO reduction by CO over Pt-Rh/γ-Al2O3 monolithic catalysts

Kyriacopoulou, V; Psyllos, A; Philippopoulos, C

dc.contributor.author	Kyriacopoulou, V	en
dc.contributor.author	Psyllos, A	en
dc.contributor.author	Philippopoulos, C	en
dc.date.accessioned	2014-03-01T01:42:32Z
dc.date.available	2014-03-01T01:42:32Z
dc.date.issued	1994	en
dc.identifier.issn	08885885	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/23869
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0028461868&partnerID=40&md5=c894f20cf2e3131b8c04b14254f687a8	en
dc.subject.other	Adsorption	en
dc.subject.other	Alumina	en
dc.subject.other	Carbon monoxide	en
dc.subject.other	Catalysts	en
dc.subject.other	Diffusion in solids	en
dc.subject.other	Mathematical models	en
dc.subject.other	Nitrogen oxides	en
dc.subject.other	Platinum	en
dc.subject.other	Reaction kinetics	en
dc.subject.other	Reduction	en
dc.subject.other	Rhodium	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Activation energy	en
dc.subject.other	Enthalpy	en
dc.subject.other	Mass transfer resistance	en
dc.subject.other	Monolithic catalysts	en
dc.subject.other	Catalysis	en
dc.title	Diffusional effects and intrinsic kinetics for NO reduction by CO over Pt-Rh/γ-Al2O3 monolithic catalysts	en
heal.type	journalArticle	en
heal.publicationDate	1994	en
heal.abstract	Experimental kinetic data have been obtained for the CO-NO reaction system over laboratory made platina-rhodium monolithic catalysts with different thicknesses of catalytic active substrate on a monolithic ceramic support. A synthetic gas mixture which consisted of CO, NO, and N2 was the feed of an integral tubular reactor between 200 and 350°C. A first-order kinetic rate expression with respect to NO concentration, which includes an inhibition term of second order, was found to fit the experimental data via a model which also accounts for internal transport resistances. The reaction rate constants, the activation energy of the reaction, the enthalpy of the adsorption process, and the effective diffusivity of NO were estimated. The obtained kinetic and diffusional data can be used in the design of a catalytic converter with improved efficiency. © 1994 American Chemical Society.	en
heal.journalName	Industrial and Engineering Chemistry Research	en
dc.identifier.volume	33	en
dc.identifier.issue	7	en
dc.identifier.spage	1669	en
dc.identifier.epage	1673	en