Understanding the kinetics of coal electrolysis at intermediate temperatures

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

The kinetics of coal electrolysis was studied on a bench continuous coal electrolytic cell setup at intermediate temperatures by applying galvanostatic polarization techniques. The results showed that coal oxidation takes place during the contact of the coal particles with the electrode and it is directly related to electrode composition and the presence of Fe(III) ions in the slurry solution. Coal electro-oxidation by Fe(III) is the limiting step in the oxidation of a 0.02 g mL-1 coal slurry containing 100 mM Fe(II)/Fe(III) at high currents (100 mA) at 108 °C with a 65 mL min-1 flow rate. The study suggests that the films that grow at the surface of the coal particles limit the coal conversion. A mechanism is proposed to describe the coal oxidation process.

Original languageEnglish
Pages (from-to)4935-4942
Number of pages8
JournalJournal of Power Sources
Volume195
Issue number15
DOIs
StatePublished - Aug 1 2010

    Fingerprint

Keywords

  • Coal electrolysis
  • Coal oxidation
  • Continuous coal electrolytic cell
  • Fe ions
  • Hydrogen production
  • Kinetics study

Cite this