| 초록 |
Oxygen removal from high-concentration hydrogen streams is essential to maintain safety and instrument performance. Catalytic purification of hydrogen is effective in selectively removing oxygen in the hydrogen stream and maintaining the oxygen concentration below the explosive level (4%), but there are not many studies on catalytic purification in the high concentration hydrogen stream. Platinum group elements such as Pd, Pt, and Ni have high hydrogen affinity and are effective catalyst candidates. A catalyst was prepared by impregnating the precursor into Al2O3 as porous support, and the performance of oxygen removal through H2-O2 recombination reaction in a hydrogen stream was compared. In this study, 0.1 wt % Pd catalyst was able to lower the oxygen concentration of 2% to about 5 ppm or less. The performance of the Pd catalyst was maintained even after 150 hours of continuous reaction. The performance of Pt and Ni catalysts was also compared under the same conditions. |
