This paper provides a comprehensive overview of the R&D status and advances of the cleaning of hydrogen sulfide from coal gas streams using zinc-based sorbents including ZnO, ZnFe_2O_4, Zn_2TiO_4 and supported zinc-based sorbents. The characteristics of single oxides sorbents, complex zinc-base sorbents and supported zinc-based sorbents are compared, including the preparation processes, desulfurization behavior and desulfurization precision, etc. Supported zinc-based sorbents are regarded as prospective sorbents in industrial applications due to their better desulfuization precision and regeneration properties. Char supported zinc-based sorbents have good performance during desulfurization at medium temperatures.
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