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 journalArticlepeer-review

45 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

Bibliographical note

Funding Information:
This work was supported by the Human Resources Development program (No. 20114010203050) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy. This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (Ministry of Science, ICT & Future Planning) (2013, University-Institute Cooperation Program). Dr. Dae-Won Lee was supported by Korea University Grant.

Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.

Keywords

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

ASJC Scopus subject areas

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

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