| 초록 |
LPG has good infrastructure and is expected to produce hydrogen, ideal fuel for PEMFC. However, studies on partial oxidation (POX) of LPG are very few. POX of n-butane, a main component of LPG for vehicles, is investigated in this research. Ceria-promoted Ni/calcium hydroxyapatite catalysts (CexNi2.5/Ca10(OH)2(PO4)6 ; x = 0.1-0.3), which had been recently reported in POX of methane and propane, was tested for POX of n-butane. The experiments were carried out with changing ceria content, O2/n-C4H10 ratio and temperature. As the O2/n-C4H10 ratio increased up to 2.75, n-C4H10 conversion and H2 yield increased and the selectivity of methane and other hydrocarbons decreased. But, with n-C4H10/O2 = 3.0, n-C4H10 conversion and H2 yield decreased. This is considered that too much oxygen may inhibit the reduction of Ni or induce the oxidation of Ni, which results in poor catalytic activity. Ce0.1Ni2.5/Ca10(OH)2(PO4)6 showed the highest n-C4H10 conversion and H2 yield on the whole. |
