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Adsorption equilibrium and dynamics of fixed bed adsorption of CH4/N2in binderless beads of 5A zeolite

2015Journal article Restricted access
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dc.contributor.authorSilva, José A.C.
dc.contributor.authorFerreira, Alexandre
dc.contributor.authorMendes, Patrícia A.P.
dc.contributor.authorCunha, Adelino F.
dc.contributor.authorGleichmann, Kristin
dc.contributor.authorRodrigues, Alírio
dc.date.accessioned2015-12-22T11:52:47Z
dc.date.available2015-12-22T11:52:47Z
dc.date.issued2015
dc.description.abstractThe sorption equilibrium of methane (CH4) and nitrogen (N2) in binderless beads of 5A zeolite is presented between 305 and 373 K and pressures up to 3 bar in a static electronic microbalance. The adsorbed amount of CH4 and N2 is around 1.6 and 1.02 mol/kgads, respectively, at 305 K and 3 bar. A comparison of these values with the ones in literature shows that the adsorption capacity of the 5A binderless beads is 20% higher than that of the 5A binder commercial materials. The CH4 and N2 adsorption isotherms were fitted with the simplest Langmuir model with a prediction of the maximum amount adsorbed for both compounds of 5.0 mol/kg. The heats of sorption are -16.6 and -15.1 kJ/mol for CH4 and N2, respectively. In the overall pressure and temperature range the isotherms of N2 seems practically linear. However, it was observed that the experimental data of N2 at low coverage (below 0.2 bar) deviates slightly from Type I isotherms. Thereafter, the binary sorption of CH4 and N2 has been investigated in a fixed bed adsorber at 313 and 343 K and total pressures up to 5 bar for 50(CH4)/50(N2) and 75(CH4)//25(N2) mixture ratios diluted in an inert helium stream. A mathematical model was formulated to compute the dynamic behavior of the fixed bed adsorber using the extended binary Langmuir model, showing close agreement with the measured binary breakthrough experiments in the partial pressure range of the components above 0.2 and below 3 bar. © 2015 American Chemical Society.pt_PT
dc.identifier.citationSilva, José A.C.; Ferreira, Alexandre; Mendes, Patricia A. P.; Cunha, Adelino F.; Gleichmann, Kristin; Rodrigues, A.E. (2015). Adsorption equilibrium and dynamics of fixed bed adsorption of CH4/N2in binderless beads of 5A zeolite. Industrial and Engineering Chemistry Research. ISSN 0888-5885. 24:54, p.6390-63999pt_PT
dc.identifier.doi10.1021/acs.iecr.5b01608pt_PT
dc.identifier.issn0888-5885
dc.identifier.urihttp://hdl.handle.net/10198/12536
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationQRENON2- FEDER-NORTE-07-0124-FEDER-0000006,
dc.relationQRENON2- FEDER-NORTE-07-0162-FEDER-000050
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAdsorption isothermpt_PT
dc.subjectMetanept_PT
dc.titleAdsorption equilibrium and dynamics of fixed bed adsorption of CH4/N2in binderless beads of 5A zeolitept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEQU%2F50020%2F2013/PT
oaire.citation.endPage6399pt_PT
oaire.citation.issue54pt_PT
oaire.citation.startPage6390pt_PT
oaire.citation.titleIndustrial and Engineering Chemistry Researchpt_PT
oaire.citation.volume24pt_PT
oaire.fundingStream5876
person.familyNameSilva
person.givenNameJosé A. C.
person.identifier.ciencia-idC11B-F5CF-7C78
person.identifier.orcid0000-0003-1778-3833
person.identifier.scopus-author-id7403023684
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication16366ede-a7d6-45ff-a8c9-eff9bdde35c7
relation.isAuthorOfPublication.latestForDiscovery16366ede-a7d6-45ff-a8c9-eff9bdde35c7
relation.isProjectOfPublication66ec3fc3-043e-4147-a64b-3d87442cc076
relation.isProjectOfPublication.latestForDiscovery66ec3fc3-043e-4147-a64b-3d87442cc076

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