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

Research output: Contribution to journalArticle

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

Fingerprint

Palladium
hydrogen peroxide
Hydrogen peroxide
Silicon Dioxide
Hydrogen Peroxide
palladium
Hydrogen
Silica
Single crystals
Oxygen
silicon dioxide
catalysts
flat surfaces
Catalysts
single crystals
oxygen
hydrogen
synthesis
selectivity
Ions

Keywords

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

ASJC Scopus subject areas

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

Cite this

Direct synthesis of hydrogen peroxide from hydrogen and oxygen over single-crystal cubic palladium on silica catalysts. / Kim, Seongmin; Lee, Dae Won; Lee, Kwan Young.

In: Journal of Molecular Catalysis A: Chemical, Vol. 383-384, 01.03.2014, p. 64-69.

Research output: Contribution to journalArticle

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