Hydrogen production by hydrothermal oxidation of FeO under acidic conditions.
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| Title: | Hydrogen production by hydrothermal oxidation of FeO under acidic conditions. |
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| Authors: | Crouzet, C.1,2,3 camille.crouzet@univ-grenoble-alpes.fr, Brunet, F.1, Recham, N.2, Findling, N.1, Lanson, M.1, Guyot, F.4, Ferrasse, J.-H.3, Goffé, B.5 |
| Source: | International Journal of Hydrogen Energy. Jan2017, Vol. 42 Issue 2, p795-806. 12p. |
| Subjects: | Hydrogen production, Iron oxides, Acetic acid, Chemical reactions, Chemical yield |
| Abstract: | The production of H 2 by oxidation of FeO, taken here as model compound for steel slags, has been investigated both in pure water and under acidic aqueous conditions in the 373–573 K temperature range. Whereas after 65 h, H 2 yield was negligible in pure water at 423 K, the reaction 3 FeO (s) + H 2 O (l) → Fe 3 O 4(s) + H 2(aq) reached near completion at the same temperature within 10 h in a solution containing 0.05 mol/l acetic acid. Increasing acetic acid concentration by one order of magnitude did not yield significantly more H 2 . At identical initial pH, acetic acid was found to be more efficient than oxalic acid and hydrochloric acid at enhancing H 2 production. Acidic conditions increased FeO dissolution kinetics and, consequently, improved H 2 yield. The specific efficiency of acetic acid resides in its thermal stability as well as in the potential of ligand-promoted Fe(II) dissolution. We show that the positive kinetics effect of mild acetic acid solutions over H 2 yield evidenced on FeO does not apply directly to steel slags which buffer the pH to high values due to the presence of large amounts of CaO. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 121189391 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Hydrogen production by hydrothermal oxidation of FeO under acidic conditions. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Crouzet%2C+C%2E%22">Crouzet, C.</searchLink><relatesTo>1,2,3</relatesTo><i> camille.crouzet@univ-grenoble-alpes.fr</i><br /><searchLink fieldCode="AR" term="%22Brunet%2C+F%2E%22">Brunet, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Recham%2C+N%2E%22">Recham, N.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Findling%2C+N%2E%22">Findling, N.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lanson%2C+M%2E%22">Lanson, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Guyot%2C+F%2E%22">Guyot, F.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Ferrasse%2C+J%2E-H%2E%22">Ferrasse, J.-H.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Goffé%2C+B%2E%22">Goffé, B.</searchLink><relatesTo>5</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Jan2017, Vol. 42 Issue 2, p795-806. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Hydrogen+production%22">Hydrogen production</searchLink><br /><searchLink fieldCode="DE" term="%22Iron+oxides%22">Iron oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Acetic+acid%22">Acetic acid</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+reactions%22">Chemical reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+yield%22">Chemical yield</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The production of H 2 by oxidation of FeO, taken here as model compound for steel slags, has been investigated both in pure water and under acidic aqueous conditions in the 373–573 K temperature range. Whereas after 65 h, H 2 yield was negligible in pure water at 423 K, the reaction 3 FeO (s) + H 2 O (l) → Fe 3 O 4(s) + H 2(aq) reached near completion at the same temperature within 10 h in a solution containing 0.05 mol/l acetic acid. Increasing acetic acid concentration by one order of magnitude did not yield significantly more H 2 . At identical initial pH, acetic acid was found to be more efficient than oxalic acid and hydrochloric acid at enhancing H 2 production. Acidic conditions increased FeO dissolution kinetics and, consequently, improved H 2 yield. The specific efficiency of acetic acid resides in its thermal stability as well as in the potential of ligand-promoted Fe(II) dissolution. We show that the positive kinetics effect of mild acetic acid solutions over H 2 yield evidenced on FeO does not apply directly to steel slags which buffer the pH to high values due to the presence of large amounts of CaO. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ijhydene.2016.10.019 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 795 Subjects: – SubjectFull: Hydrogen production Type: general – SubjectFull: Iron oxides Type: general – SubjectFull: Acetic acid Type: general – SubjectFull: Chemical reactions Type: general – SubjectFull: Chemical yield Type: general Titles: – TitleFull: Hydrogen production by hydrothermal oxidation of FeO under acidic conditions. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Crouzet, C. – PersonEntity: Name: NameFull: Brunet, F. – PersonEntity: Name: NameFull: Recham, N. – PersonEntity: Name: NameFull: Findling, N. – PersonEntity: Name: NameFull: Lanson, M. – PersonEntity: Name: NameFull: Guyot, F. – PersonEntity: Name: NameFull: Ferrasse, J.-H. – PersonEntity: Name: NameFull: Goffé, B. IsPartOfRelationships: – BibEntity: Dates: – D: 12 M: 01 Text: Jan2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 03603199 Numbering: – Type: volume Value: 42 – Type: issue Value: 2 Titles: – TitleFull: International Journal of Hydrogen Energy Type: main |
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