Electrolysis of coal slurries to produce hydrogen gas: Effects of different factors on hydrogen yield

Hesenov A., Meryemoglu B., ICTEN O.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol.36, no.19, pp.12249-12258, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 19
  • Publication Date: 2011
  • Doi Number: 10.1016/j.ijhydene.2011.06.134
  • Journal Name: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.12249-12258
  • Keywords: Hydrogen production, Coal oxidation, Electrochemical gasification, ELECTROCHEMICAL GASIFICATION, INTERMEDIATE TEMPERATURES, WATER ELECTROLYSIS, ANODIC-OXIDATION, ELECTRODES, KINETICS, SINGLE, PYRITE
  • Çukurova University Affiliated: Yes

Abstract

The study was aimed to investigate the effects of different factors (such as acid concentration, cell potential, temperature, coal types, and geometric area of the membrane) on the coal slurry electrolysis and hydrogen evolution. It was observed that all of the above factors affected hydrogen production upon completion of the electrolysis. The results revealed that an increase in the initial acid concentration up to 5.0 M brought about an increase in the current density and hydrogen evolution. However, the higher the acid concentration was taken (>7.0 M) then the lower the current density and hydrogen evolution were, which resulted in significant change due to the agglomeration of coal samples and stuck on the electrode surface.