Publication
Kinetics of sodium borohydride hydrolysis in aqueous-basic solutions
| dc.contributor.author | Retnamma, Rajasree | |
| dc.contributor.author | Rangel, C. M. | |
| dc.contributor.author | Novais, Augusto Q. | |
| dc.contributor.author | Matthews, Michael A. | |
| dc.date.accessioned | 2013-09-23T14:53:02Z | |
| dc.date.available | 2013-09-23T14:53:02Z | |
| dc.date.issued | 2013 | |
| dc.description.abstract | Liquid-phase catalytic hydrolysis of sodium borohydride (NaBH4) for hydrogen production necessitates long-term stability of base-stabilized NaBH4 solutions at higher temperatures. The present paper reports the kinetics of aqueous-basic solutions containing 20 wt% NaBH4 with 1-15 wt% sodium hydroxide (NaOH) at 80 0C. The established kinetic model employs a modified isoconversional method assuming single-step kinetics. The estimation of kinetic parameters is performed by gPROMS (general PRocess Modeling System) parameter estimation tool. The reaction kinetics differs from low to highly-concentrated NaOH solutions. In highly-basic (.10 wt% NaOH), aqueous solutions of NaBH4, the rate is independent of NaOH concentration, while for lower-basic (< 10 wt% NaOH) solutions, the dependence is -0.57, confirming the inhibition of hydrolysis kinetics by NaOH. | por |
| dc.identifier.citation | Retnamma, R.; Rangel, C.M.; Novais, A.Q.; Matthews, M.A. Kinetics of sodium borohydride hydrolysis in aqueous-basic solutions. In: HYCELTEC'2013 - IV Iberian Symposium on Hydrogen, Fuel Cells and Advanced Batteries, Book of Abstracts, Estoril, 26-28 June, 2013 | por |
| dc.identifier.uri | http://hdl.handle.net/10400.9/2001 | |
| dc.language.iso | eng | por |
| dc.subject | Sodium Borohydride | por |
| dc.subject | Hydrogen production | por |
| dc.subject | Isoconversional method | por |
| dc.subject | Gproms | por |
| dc.subject | Kinetics | por |
| dc.title | Kinetics of sodium borohydride hydrolysis in aqueous-basic solutions | por |
| dc.type | conference object | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Estoril, Portugal | por |
| oaire.citation.title | HYCELTEC'2013 - IV Iberian Symposium on Hydrogen, Fuel Cells and Advanced Batteries | por |
| person.familyName | Rangel | |
| person.givenName | Carmen M. | |
| person.identifier.ciencia-id | AA13-FF7C-9E29 | |
| person.identifier.orcid | 0000-0001-7996-8142 | |
| person.identifier.rid | D-5477-2011 | |
| person.identifier.scopus-author-id | 7006108156 | |
| rcaap.rights | openAccess | por |
| rcaap.type | conferenceObject | por |
| relation.isAuthorOfPublication | 804e595a-d539-46a2-ae78-6cadc8ca9457 | |
| relation.isAuthorOfPublication.latestForDiscovery | 804e595a-d539-46a2-ae78-6cadc8ca9457 |