【摘要】 通过对FBD型、B112型CO高变催化剂进行H2S中毒、恢复的活性比较,发现FBD型CO高变催化剂具有低温活性好、耐硫性能强的特点.采用扫描电镜、BET、红外光声光谱技术进行深入研究,结果表明:FBD型CO高变催化剂添加的耐硫助剂提高了催化剂比表面积、孔容,并且能优先与H2S结合,屏蔽催化剂中Fe3O4的Fe2+活性位与H2S作用,从而提高了催化剂的耐硫性能.更多还原

【Abstract】 The activity of FBD and B112 high-temperature shift catalysts in the process of H₂S poisoning and regeneration have been investigated. The results show that FBD catalyst has higher activity in low temperature and better sulfur resistance. SEM、 BET and FTIR-PAS analysis reveal that the good sulfur resistant character is contributed to added sulfur resistant dose in catalyst, which improves BET specific surface area and pore volume, combines with H₂S in priority, and shield the action between H₂S and Fe²⁺ active site of Fe₃O₄.更多还原