Catalysis and characterization of a rugged lead ruthenate pyrochlore membrane catalyst

Jyh Harng Ke, Annamalai Senthil Kumar, Jun Wei Sue, Shanmuganathan Venkatesan, Jyh Myng Zen

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

A rugged lead ruthenate pyrochlore (Py, Pb2Ru2O 6O′) Nafion® 417 membrane catalyst (|NPy|) has been prepared by an in situ precipitation method and characterized by physico-chemical techniques. The Nafion® 417 membrane enhanced the Py crystallization to form a stable and continuous agglomerate-like structure in the |NPy| network. The cationic exchange characteristics of Nafion® 417 membrane was not fully suppressed after Py modification. Catalytic performance was demonstrated for the one pot and selective oxidation of benzyl alcohol to benzaldehyde via a perruthenate (RuO4-) intermediate with 30% H2O2 (as a sacrificial co-oxidant) in a triphasic condition (i.e. CH 2Cl2/NPy/H2O2). Four repeated experiments with the |NPy| entailed a weight loss of ∼0.07% with virtually the same catalytic performance. With these inherent features, this membrane catalyst is useful in diverse research fields including organic synthesis, fuel cells, charge storage systems, etc.

Original languageEnglish
Pages (from-to)111-120
Number of pages10
JournalJournal of Molecular Catalysis A: Chemical
Volume233
Issue number1-2
DOIs
Publication statusPublished - 2005 May 24

All Science Journal Classification (ASJC) codes

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

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