Monolithic catalysts: Diffusional mass transfer of CO through Y-alumina substrates under reacting conditions

Liapi, A; Psyllos, A; Philippopoulos, C

dc.contributor.author	Liapi, A	en
dc.contributor.author	Psyllos, A	en
dc.contributor.author	Philippopoulos, C	en
dc.date.accessioned	2014-03-01T01:12:05Z
dc.date.available	2014-03-01T01:12:05Z
dc.date.issued	1996	en
dc.identifier.issn	0098-6445	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11949
dc.subject	Alumina	en
dc.subject	Catalysts	en
dc.subject	Diffusion	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Alumina	en
dc.subject.other	Carbon monoxide	en
dc.subject.other	Catalytic converters	en
dc.subject.other	Deposition	en
dc.subject.other	Diffusion	en
dc.subject.other	Mass transfer	en
dc.subject.other	Mathematical models	en
dc.subject.other	Oxidation	en
dc.subject.other	Reaction kinetics	en
dc.subject.other	Substrates	en
dc.subject.other	First order kinetics	en
dc.subject.other	Knudsen diffusion	en
dc.subject.other	Platina rhodium monolithic catalyst	en
dc.subject.other	Catalysts	en
dc.title	Monolithic catalysts: Diffusional mass transfer of CO through Y-alumina substrates under reacting conditions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/00986449608936466	en
heal.identifier.secondary	http://dx.doi.org/10.1080/00986449608936466	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	Experimental kinetic data have been obtained for the CO oxidation reaction over laboratory made platina-rhodium monolithic catalyst. Inert layers of gamma-alumina were deposited over the active layer in order to elucidate the diffusional effects on the monolithic catalyst. A synthetic gas mixture consisting of CO, O-2 and N-2 was the feed of an integral tubular reactor between 180 and 370 degrees C. A first order kinetic rate expression with respect to CO concentration, which includes an inhibition term of second order was found to fit the experimental data via a model which also accounts for diffusional resistances. The obtained kinetic and diffusional data can be used in the design of a catalytic converter with improved efficiency. The results can also be used to interpret the diffusion mechanism inside the catalyst itself and it was concluded that Knudsen diffusion mechanism prevails.	en
heal.publisher	GORDON BREACH SCI PUBL LTD	en
heal.journalName	Chemical Engineering Communications	en
dc.identifier.doi	10.1080/00986449608936466	en
dc.identifier.isi	ISI:000072149900002	en
dc.identifier.volume	145	en
dc.identifier.spage	23	en
dc.identifier.epage	32	en