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.
|Number of pages||6|
|Journal||Industrial and Engineering Chemistry Research|
|Publication status||Published - Dec 1 1999|
ASJC Scopus subject areas
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering