镧改性铁催化剂的TPR技术和MES法研究  

Study of Supported Iron Catalysts with TPR and MES Technique

作　　者：周钰明[1] 葛裕华[1] 钱杰生[1] 丁莹如[2] 

机构地区：[1]东南大学化学化工系 [2]南京大学化学系

出　　处：《中国稀土学报》1997年第1期27-30,共4页Journal of the Chinese Society of Rare Earths

摘　　要：对负载Ｆｅ２Ｏ３Ｌａ２Ｏ３γＡｌ２Ｏ３催化剂的ＴＰＲ、ＭＥＳ方法的研究表明，氧化镧对γＡｌ２Ｏ３的改性，增强了活性组份同载体的相互作用，并使Ｆｅ２Ｏ３Ｌａ２Ｏ３γＡｌ２Ｏ３催化剂在还原过程中稳定了亚铁离子相。Temperature programmed reduction(TPR) and Mssbauer spectroscopy(MES) have been used to study the supported iron catalysts. The results show that Fe 2O 3 La 2O 3 γ Al 2O 3 catalyst in which carrier γ Al 2O 3 is modified by La 2O 3 exhibits much stronger active component support interaction, stabilizes the FeO phase and thus makes it more difficult be reduced to α Fe. Because of the stronger active component support interaction, no iron carbide is detected during Fischer Tropsch Synthesis on Fe 2O 3 La 2O 3 γ Al 2O 3 catalyst.

关 键 词：铁催化剂 穆斯堡尔谱 镧 金属催化剂 

分 类 号：TQ426.81[化学工程]