采用等体积浸渍法制备了不同金属（La、Co、Ce、Cr）改性的M-Rh/FePO₄催化剂，考察不同催化剂在1-辛烯氢甲酰化中的反应性能；利用XRD、H₂-TPR、XPS等对催化剂进行表征。结果表明，不同改性剂对Rh/FePO₄催化剂中金属Rh与载体FePO₄改性效果不同，其中金属Cr的加入对Rh/FePO₄催化性能的提高明显优于其他3种改性剂，同时，过多金属Cr的加入降低了催化性能。当金属Cr质量分数为0.1%时，可显著增强金属Rh与载体FePO₄之间的相互作用，在1-辛烯氢甲酰化反应中表现出较好的催化性能，可获得99.4%的转化率和92.8%的醛收率。催化剂经5次循环反应后仍保持较好的活性和选择性，具有良好的循环稳定性。

M-Rh/FePO₄ catalysts modified by different metals, such as La, Co, Ce, Cr, are synthesized via incipient impregnation, and characterized by means of XRD, H₂-TPR and XPS.Their reaction performances are investigated in the hydroformylation of 1-octene.The results show that different metal modifiers lead to different influences on the interaction between metal Rh and FePO₄ support.Among them, Cr demonstrates better catalytic performance than other modifiers.Meanwhile, it is found there exists a suitable adding amount for Cr.Overhigh adding amount will decline the catalytic performance of catalysts, which weakens the interaction between Rh and FePO₄.As the adding amount of Cr is 0.1%, it can significantly enhance the interaction between Rh and FePO₄.The catalyst with 0.1% of Cr can exhibit good catalytic performance in hydroformylation of 1-octene, over which the conversion of 1-octene can reach 99.4% and the yield can reach 92.8%.The catalyst exhibits excellent activity and stability, which can maintain an unchanged activity and selectivity after five cycles of experiments.

高照华(1996-),男,硕士研究生,研究方向为工业催化,zhaohuagao@s.ytu.edu.cn