| 초록 |
The key of effective H2 release from liquid-phase chemical H2 storage materials is to prevent deactivation of catalysts by reactants were strongly adsorbed on acidic site of supports in catalysts. Herein, so as to adjust the acidity of Al2O3, a series of CeO2–Al2O3 composites (5~20 wt% CeO2) were prepared by an one-pot synthesis without solvent and Pt was loaded by impregnation. Characterization results revealed that CeO2 contents affected the acidity of Al2O3, reactant adsorption capacity, and fast H2 release. We performed dehydrogenation of H12-BMP (6.2 wt% H2 capacity). The rate constant, k1 of Pt/10CeAl (0.0163 min-1) was faster than Pt/Ce (0.0103 min-1) and Pt/A (0.0172 min-1) at 270 °C. Consequently, the catalytic activity and stability could be explained by the optimal support interaction with reactants adsorbed on catalysts by TG analysis. |
