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Desulfurization Ability of CuO-Fe2O3 Sorbents with Respect to the Calcination Temperature by GC/microreactor  

Lee, Hyo-Song (Department of Chemical Engineering, Chungnam National University)
Kim, Jin-Yong (Department of Chemical Engineering, Chungnam National University)
Kim, Jeong-Soo (Department of Chemical Engineering, Chungnam National University)
Rhee, Young Woo (Department of Chemical Engineering, Chungnam National University)
Publication Information
Korean Chemical Engineering Research / v.43, no.1, 2005 , pp. 140-145 More about this Journal
Abstract
The desulfurization abilities using GC/microreactor have been examined for $CuO-Fe_2O_3$ sorbents with respect to calcination temperatures of 700, 900 and $1,100^{\circ}C$. CuO was used as a main active component, $Fe_2O_3$ was used as an additive one and 25 wt% $SiO_2$ was used as a support. The desulfurization reaction temperature was $500^{\circ}C$ and the regeneration reaction temperature was $700^{\circ}C$. From the XRD results, the $CuFeO_2$ compound has been observed for the fresh sorbent calcined at $1,100^{\circ}C$ and the $CuFeS_2$ compound for the reacted sorbent calcined at $1,100^{\circ}C$. By the BET results, however any significant differences among sorbents calcined at the three different temperatures of 700, 900 and $1,100^{\circ}C$ haven't been observed. Especially CFS1 (CuO : $Fe_2O_3$ : $SiO_2$=67.5 wt% : 7.5 wt% : 25 wt%) sorbent calcined at $1,100^{\circ}C$ maintained about 10 g sulfur/100 g sorbent for 100 cycles by the cyclic test.
Keywords
Desulfurization Abillities; CuO-$Fe_2O_3$ Sorbent; $CuFeO_2$ Compound; Calcination Effect;
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