| 초록 |
Hydrogen source is an attractive replacement energy for providing a future about the current fossil-fuel energy. In a hydrogen society for net zero CO2 emission, ammonia(NH3) is drawn attention as a hydrogen carrier because of its high hydrogen storage capacities (17.7 wt.% And 108 kgH2/m3 at 857 kPa and 20℃). Also, NH3 decomposition produces only chemically inert nitrogen(N2) during H2 production, and NH3-slip can be removed by adsorbents. Therefore, NH3 decomposition can inhibit carbon emissions and meet the green H2 generation requirements. In this study, ruthenium was added to Al2O3 and CeO2 supports to compare ammonia decomposition performance. Strong interaction of Ru-Ce improved the conversion of hydrogen from ammonia at low temperature. The desorption properties of nitrogen and hydrogen at the surface of the Ru based catalyst were confirmed from NH3-TPD analysis. |
