Modification of ZnO-TiO2 high-temperature desulfurization sorbent by ZrO2 addition

Eiji Sasaoka, Norimasa Sada, Akifumi Manabe, Azhar Uddin, Yusaku Sakata

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Abstract

To develop a highly reactive and easily regenerable zinc oxide high-temperature desulfurization sorbent, a modification of ZnO-TiO2 by addition of ZrO2 was studied. The metal oxides ZnO -TiO2-ZrO2 were prepared by a coprecipitation method: the amount of ZnO was a fixed 50 mol % of the sample. In this study, it was found that the addition of 5 or 10 mol % ZrO2 to 50 mol % ZnO-50 mol % TiO2 greatly improved the reactivity for H2S removal. Furthermore, the addition of ZrO2 improved its regenerability: the temperature for the regeneration of the sample was decreased to ca. 40 °C in the absence of H2O and ca. 75 °C in the presence of 10% H2O by the addition of 10% ZrO2.

Original languageEnglish
Pages (from-to)958-963
Number of pages6
JournalIndustrial and Engineering Chemistry Research
Volume38
Issue number3
Publication statusPublished - 1999

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ASJC Scopus subject areas

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

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