Review of catalytic supercritical water gasification for hydrogen production from biomass

Author

Y. Guo, S.Z. Wang, D.H. Xu, Y.M. Gong, H.H. Ma and X.Y. Tang

Renewable and Sustainable Energy Reviews, 2010, vol. 14, issue 1, pages 334-343

Abstract: Hydrogen is defined as an attractive energy carrier due to its potentially higher energy efficiency and low generation of pollutants, which can replace conventional fossil fuels in the future. The governments have invested huge funds and made great efforts on the research of hydrogen production. Among the various options, supercritical water gasification (SCWG) is a most promising method of hydrogen production from biomass. Supercritical water (SCW) has received a great deal of attention as a most suitable reaction medium for biomass gasification because it is safe, non-toxic, readily available, inexpensive and environmentally benign. However, high temperature and pressure are required to meet the minimum reaction condition. Therefore, the high operating cost has become the biggest obstacle to the development of this technology. To overcome this bottleneck, many researchers have carried out intensive research work on the catalytic supercritical water gasification (CSCWG). Based on the previous studies stated in the literature, the authors try to give an overview (but not an exhaustive review) on the recent investigations of CSCWG. Besides, the physicochemical properties of SCW and its contributions in subcritical and supercritical water reaction are also summarized.

Keywords: Hydrogen; production; Supercritical; water; Hydrothermal; reaction; Biomass; Catalyst (search for similar items in EconPapers)
Date: 2010
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