Synthesis of nanophased metal oxides in supercritical water: Catalysts for biomass conversion

Caroline Levy, Masaru Watanabe, Yuichi Aizawa, Hiroshi Inomata, Kiwamu Sue

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Nanoparticles of zinc oxide-based materials (ZnO, ZnAl2 O4) with various morphologies were synthesized in supercritical water (SCW) with a flow-type apparatus and in sub- and supercritical water with a batch reactor. In the flow-type apparatus, smaller particles were obtained. Depending on the precursors, the morphology of crystallites is rod, hexagonal, or rectangular shaped. ZnAl2O4 was synthesized with a high specific surface area (SBET) reaching 210m2/g and nanocrystallite sizes ≤10 nm. The KOH concentration played a major role in the formation of ZnO and ZnAl2O4 phases. Then, the synthesized materials were used as catalysts for the biomass conversion by the oxidation process to produce hydrogen.

Original languageEnglish
Pages (from-to)337-344
Number of pages8
JournalInternational Journal of Applied Ceramic Technology
Volume3
Issue number5
DOIs
Publication statusPublished - 2006 Oct 1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Marketing
  • Materials Chemistry

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