Direct synthesis of hydrogen peroxide from hydrogen and oxygen over a Pd core-silica shell catalyst

Hwajung Lee, Seongmin Kim, Dae Won Lee, Kwan Young Lee

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Pd core-silica shell particles (Pd@SiO2) were prepared by encapsulating Pd colloids with a silica shell through the Stöber method. The palladium core particles were well dispersed (Dispersion = 43%) and had uniform size (4 nm) and shape inside the porous silica shell. Pd@SiO2 showed good catalytic activity (554 mmol H2O2/g Pd•h) for the direct synthesis of H2O2, which was better than those of impregnated Pd catalysts (Pd/SiO2 and Pd/Al 2O3). It is expected that the stabilization of less coordinated Pd crystals in a highly dispersed state by core-shell formation is effective for the improvement of H2O2 production.

Original languageEnglish
Pages (from-to)968-971
Number of pages4
JournalCatalysis Communications
Volume12
Issue number11
DOIs
Publication statusPublished - 2011 Jun 10

Keywords

  • Colloid nanoparticle
  • Core-shell
  • Direct synthesis
  • Hydroen peroxide
  • Palladium

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Process Chemistry and Technology

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