Role of H2O in oxidation of spent high-temperature desulfurization sorbent Fe2O3 and CuO in the presence of O2

Eiji Sasaoka, Makoto Hatori, Hiroyuki Yoshimura, Caili Su, Azhar Uddin

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To develop an easily regenerable high-temperature desulfurization sorbent, the oxidation of spent Fe2O3 and CuO sorbents in the presence of O2 and H2O was studied: The effect of H2O on the oxidation of the spent Fe2O3 and CuO was examined using a temperature-programmed reduction technique and isotopic H218O. In this study, it was found that H2O directly contributed to the oxidation of the spent metal oxides in the presence of O2. The oxidation of the spent metal oxides (containing metal sulfide MexSy) in the presence of 10% H2O and 10% O2 could be explained by the following two reactions: MexSy + (z + 2y)H2O ⇔ MexOz + SO2 + (z + y)H2 and (z + 2y)H2 + {(z + 2y)/2}O2 ⇒ (z + 2y)H2O.

Original languageEnglish
Pages (from-to)2512-2517
Number of pages6
JournalIndustrial and Engineering Chemistry Research
Issue number11
Publication statusPublished - May 30 2001


ASJC Scopus subject areas

  • Polymers and Plastics
  • Environmental Science(all)
  • Chemical Engineering (miscellaneous)

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