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A low cost & safe system of hydrogen production utilizing NaBH4 and CoO catalysis
Department of Energy, São Paulo State University (UNESP), Brazil.
Department of Energy, São Paulo State University (UNESP), Brazil.
KTH, Skolan för kemivetenskap (CHE), Kemiteknik.ORCID-id: 0000-0002-6212-4194
KTH, Skolan för kemivetenskap (CHE), Kemiteknik. (Gasification)ORCID-id: 0000-0002-1664-0278
2007 (Engelska)Ingår i: 2nd International Congress University-Industry Cooperation (UNIDU07), 2007Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The objective of this study was to evaluate the hydrogen production through hydrolysisof sodium borohydride (NaBH4) utilizing catalysts containing CoO. The reactant is safe and stable(when dry) at room temperature. Few works and studies have presented results of investigationsutilizing catalysts containing cobalt; however utilizing catalysts containing CoO were not found yet.In this work simple and cheap hydrogen generation system was developed having reactions atnormal conditions of temperature and pressure. A solution containing a gravimetric composition of10% wt. NaOH, 10% wt. NaBH4 and 80% wt. H2O was utilized. The reaction was carried out atvarious times using the same catalyst to evaluate its performance. This catalyst presented highrates of hydrogen production, especially at its start-up (about 99% of the theoretical hydrogenvolume was produced) at room temperature. After start-up, e.g., when more solution was put, rateof hydrogen production decreased having its production performance also decreased. Probablythis fact occurred due to the formation of the solid phase products such as NaBO2 which might fillthe porous catalyst structure; decreasing the catalytic area. This catalyst is suggested in situationswhere high production rates are necessary such as start-up of fuel cells.

Ort, förlag, år, upplaga, sidor
2007.
Nyckelord [en]
hydrolysis, sodium borohydride, cobalt oxide, hydrogen production
Nationell ämneskategori
Annan kemiteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-73223OAI: oai:DiVA.org:kth-73223DiVA, id: diva2:488656
Konferens
2nd International Congress University-Industry Cooperation (UNIDU07), Dec. 9-12, 2007, Perugia, Italy.
Anmärkning
QC 20120202Tillgänglig från: 2012-02-02 Skapad: 2012-02-02 Senast uppdaterad: 2012-02-02Bibliografiskt granskad

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