Continuous hydrogen generation from formic acid: Highly active and stable ruthenium catalysts

Albert Boddien, Björn Loges, Henrik Junge, Felix Gärtner, James R. Noyes, Matthias Beller

Research output: Contribution to journalArticlepeer-review

166 Scopus citations

Abstract

The ruthenium-catalyzed decomposition of formic acid was investigated with respect to continuous hydrogen generation and long-term stability of the catalytic systems. A highly active and stable system is presented, which was studied in batch and continuous modes for up to two months. The optimized catalyst system containing JV,JV-dimethyl-rchexylamine with an in situ generated catalyst from (benzene )ruthenium dichloride dimer [RuCl2 (benzene)]2 and 6 equivalents of 1,2-bis(diphenylphosphino)ethane (dppe) reached at room temperature a total turnover number (TON) of approximatly 260,000 with average turnover frequency (TOF) of about 900 h-1. Only hydrogen and carbon dioxide were detected in the produced gas mixture which makes this system applicable for direct use in fuel cells.

Original languageEnglish
Pages (from-to)2517-2520
Number of pages4
JournalAdvanced Synthesis and Catalysis
Volume351
Issue number14-15
DOIs
StatePublished - 2009
Externally publishedYes

Keywords

  • Amines
  • Catalysis
  • Formic acid
  • Hydrogen
  • Ruthenium

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