Electrochemical promotion of catalytic reactions with Pt/C (or Pt/Ru/C)//PBI catalysts

Irina Petrushina, Niels Bjerrum, Viktor Bandur, Lars Nilausen Cleemann

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The paper is an overview of the results of the investigation on electrochemical promotion of three catalytic reactions: methane oxidation with oxygen, NO reduction with hydrogen at 135 degrees C and Fischer-Tropsch synthesis (FTS) at 170 degrees C in the [CH4/O-2(or NO/H-2 or CO/H-2)/Ar//Pt(or Pt/Ru)//PBI(H3PO4)/H-2, Ar] fuel cell. It has been shown that the partial methane oxidation to C2H2 and the C-2 selectivity were electrochemically promoted by the negative catalyst polarization. This was also the case in NO reduction with hydrogen for low NO and H-2 partial pressures. In both cases the catalytic reactions have been promoted by the electrochemically produced hydrogen. It has been found that the NO reduction with hydrogen on the Pt/PBI strongly depends on NO and hydrogen partial pressures in the working gas mixture. At higher NO and H-2 partial pressures the catalysis is promoted by the electrochemical pumping of H+ from the catalyst, i.e. at positive polarization. FTS demonstrated the highest methane production rate (11% of CO conversion) at zero fuel cell voltage.
Original languageEnglish
JournalTopics in Catalysis
Volume44
Issue number3
Pages (from-to)427-434
ISSN1022-5528
DOIs
Publication statusPublished - 2007

Keywords

  • fuel cell
  • XPS
  • amide
  • surface
  • amine oxide
  • PBI
  • pyridine
  • NO reduction
  • Fischer-Tropsch synthesis
  • electrochemical promotion
  • dimethylamine
  • Cu(110)
  • methane oxidation
  • STM

Fingerprint Dive into the research topics of 'Electrochemical promotion of catalytic reactions with Pt/C (or Pt/Ru/C)//PBI catalysts'. Together they form a unique fingerprint.

Cite this