Biomass gasification is a possible alternative to the direct use of fossil
fuel energy. Biomass, a CO, neutral source of renewable fuel, can contribut
e to the demand for heat, electricity and synthesis gas. However, there are
inefficiencies in the technology, which at present render biomass gasifica
tion economically unviable. The presence of condensable organic compounds a
nd methane in the product gas renders the gas unsuitable for specific appli
cations, Elimination of the condensable organic compounds and methane by a
suitably cheap technology will enhance the economic viability of biomass ga
sification. This paper contains an extensive literature review of the three
main groups of catalysts, which have been evaluated for the elimination of
these hydrocarbons. These three groups of catalysts are dolomite, alkali m
etals and nickel. (C) 2001 Elsevier Science B.V. All rights reserved.