Abstract
AbstractThe dry regenerative sorption process using the γ‐alumina‐supported copper oxide sorbent is considered an alternative to the conventional once‐through limestone scrubbing process for flue gas desulfurization. To define the characteristics of the γ‐alumina‐supported copper oxide sorbent in the sulfation and regeneration reactions, the wet‐impregnation method was applied to prepare γ‐alumina‐supported copper oxide sorbent, and cycles of sulfation‐regeneration reactions were carried out in a quartz tube reactor. The effects of the physical properties of the used supports and the concentration of the impregnation solution on the SO2 sorption capacity of the sorbent, as well as the dispersed form of the copper oxide on the support and the stability of the sorbent were determined by means of Brunauer, Emmett and Teller (BET), X‐Ray Diffraction (XRD), electron probe microanalyser (EPMA) and scanning electron microscope (SEM) techniques. The results show that the γ‐alumina used for the sorbent should have both a large surface area and an ideal pore size. As the supports were impregnated with 2 mol/l Cu(NO3)2 solution, the loading amount of the active copper oxide coated on the sorbent was optimum and the copper oxide was dispersed in the desired form. The prepared γ‐alumina (DS)‐supported copper oxide sorbent exhibited high SO2 sorption capacity and the desired sulfation‐regeneration properties. Copyright © 2007 Curtin University of Technology and John Wiley & Sons, Ltd.
Published Version
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