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Modelling NOx adsorption in a thin NaZSM-5 film supported on a cordierite monolith

Indra Perdana (Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik) ; Derek Creaser (Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik) ; I. Made Bendiyasa ; Rochmadi ; Boma Wikan Tyoso
Chemical Engineering Science (0009-2509). Vol. 62 (2007), 15, p. 3882-3893.
[Artikel, refereegranskad vetenskaplig]

Transient two dimensional (2-D) and three dimensional (3-D) single channel models (SCMs) describing transport of NOx into a NaZSM-5 film and kinetics for reactions forming nitrate species were developed. The film consisted of a continuous thin layer of inter-grown NaZSM-5 crystals supported on a cordierite monolith support. The 2-D model which included a comprehensive transport model was developed for studying the adsorption kinetics, whereas the more rigorous 3-D model was used to provide a better picture of radial and axial concentration and velocity variations in the monolith channel and the film. The overall adsorption-desorption mechanism, consisting of two competing reaction schemes for nitrate formation, was sufficient to predict the dynamic development of surface nitrate species. The simulation results showed that the adsorption is strongly influenced by transport resistance in the NaZSM-5 film. Also, the effective diffusion of NOx in the NaZSM-5 film is apparently surface nitrate concentration dependent.

Nyckelord: Adsorption modelling, NOx adsorption, monolith, NaZSM-5 film

Denna post skapades 2007-08-07. Senast ändrad 2015-03-30.
CPL Pubid: 44727


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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik (2005-2014)


Molekylära transportprocesser i kemisk processteknik

Chalmers infrastruktur

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NOx Adsorption and Transport in ZSM-5 Films