Sustainable hydrogen from bio-oil - Steam reforming of acetic acid as a model oxygenate

K. Takanabe, Ken-ichi Aika, Kulathuiyer Seshan, Leonardus Lefferts

Research output: Contribution to journalArticleAcademicpeer-review

265 Citations (Scopus)

Abstract

Steam reforming of acetic acid over Pt/ZrO2 catalysts has been investigated. Pt/ZrO2 catalysts are very active, completely converting acetic acid, and give a hydrogen yield close to thermodynamic equilibrium. The catalyst deactivated by formation of oligomers which block the active sites. The mechanism of both the reaction and the deactivation was studied with kinetic and spectroscopic measurements on Pt/ZrO2, ZrO2, and Pt black. It is shown that Pt is essential for steam reforming to proceed. ZrO2 is needed to activate steam. ZrO2, on the other hand, is also active for oligomer¿precursor formation under the conditions investigated. Results obtained in the study show that steam reforming takes place at the PtZrO2 boundary and that deactivation occurs when this boundary is blocked by oligomers.
Original languageEnglish
Pages (from-to)101-108
Number of pages8
JournalJournal of catalysis
Volume227
Issue number1
DOIs
Publication statusPublished - 2004

Keywords

  • METIS-221031
  • IR-49061

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