Direct synthesis of hydrogen peroxide from hydrogen and oxygen over single-crystal cubic palladium on silica catalysts

Seongmin Kim, Dae Won Lee, Kwan Young Lee

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31 Citations (Scopus)

Abstract

The activities of Pd metal catalysts for direct hydrogen peroxide synthesis are influenced by the morphological and crystallographic properties of the Pd species. We prepared {1 0 0}-facet-enclosed Pd nanocubes of uniform shape, size, and crystallinity using an aqueous colloidal method. The nanocube size was adjusted, without affecting the shape, by changing the composition of the halide-ion capping agent. The Pd nanocubes were impregnated on silica, and tested as a catalyst in direct hydrogen peroxide synthesis. The {1 0 0} Pd facet catalyzed hydrogen peroxide formation but promoted side reactions, decreasing hydrogen peroxide selectivity; the selectivity was improved by blocking active sites on the {1 0 0} facet with bromide ions.

Original languageEnglish
Pages (from-to)64-69
Number of pages6
JournalJournal of Molecular Catalysis A: Chemical
Volume383-384
DOIs
Publication statusPublished - 2014 Mar 1

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Keywords

  • Direct synthesis
  • Hydrogen peroxide
  • Nanocatalyst
  • Nanocubes
  • Palladium

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry
  • Process Chemistry and Technology

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