| 초록 |
To investigate the simultaneously removal of H2S and NH3, Zn-Al-based sorbents promoted a transition metal such as with cobalt, nickel, and molybdenum additive were prepared by impregnation and co-precipitation method and the decomposition of NH3 was studied in a micro-reactor at 1 atm and 650℃. The NH3 did not affect the sulfur removing capacity of Zn-Al-based sorbent. The additive like cobalt, nickel and molybdenum, was found to be an active component in the NH3 decomposition as well as H2S absorption, while the major components such as ZnO and Al2O3 did not show any activity in the NH3 decomposition reaction. The NH3 was decomposed over both oxide and sulfide forms of the additives, even though the NH3 decomposition on the sulfide form of an additive dramatically decreased in the presence of excess H2. In the case of oxide form, cobalt and molybdenum oxide showed an excellent NH3 decomposition capacity regardless of H2 concentration, while the capacity of nickel oxide depended on the H2 concentration. |
