Hydrogen production by sorption-enhanced steam reforming of glycerol

Bioresour Technol. 2009 Jul;100(14):3540-7. doi: 10.1016/j.biortech.2009.02.036. Epub 2009 Mar 21.

Abstract

Catalytic steam reforming of glycerol for H(2) production has been evaluated experimentally in a continuous flow fixed-bed reactor. The experiments were carried out under atmospheric pressure within a temperature range of 400-700 degrees C. A commercial Ni-based catalyst and a dolomite sorbent were used for the steam reforming reactions and in situ CO(2) removal. The product gases were measured by on-line gas analysers. The results show that H(2) productivity is greatly increased with increasing temperature and the formation of methane by-product becomes negligible above 500 degrees C. The results suggest an optimal temperature of approximately 500 degrees C for the glycerol steam reforming with in situ CO(2) removal using calcined dolomite as the sorbent, at which the CO(2) breakthrough time is longest and the H(2) purity is highest. The shrinking core model and the 1D-diffusion model describe well the CO(2) removal under the conditions of this work.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Biotechnology / methods*
  • Carbon Dioxide / chemistry
  • Catalysis
  • Diffusion
  • Equipment Design
  • Gases
  • Glycerol / chemistry*
  • Hydrogen / chemistry*
  • Methane / chemistry
  • Models, Chemical
  • Models, Statistical
  • Nickel / chemistry
  • Pressure
  • Temperature

Substances

  • Gases
  • Carbon Dioxide
  • Nickel
  • Hydrogen
  • Methane
  • Glycerol