Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 1992, Vol. 3 ›› Issue (2): 149

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A MÖSSBAUER SPECTROSCOPIC STUDY ON THE STRUCTURE OF Fe—M ULTRAFINE PARTICLE CATALYSTS (M=Mn, Zn, Mg)*

Li Xianguo (李先国)1, Shen Jianyi (沈俭一)2, Zhong Bing (钟 炳)1,  Chen Yi (陈 懿)2, Peng Shaoyi (彭少逸)1, Wang Qin (王 琴)1, Wu Dong (吴 东)1   

  1. 1 Institute of Coal Chemistry,Academia Sinica, Taiyuan 030001, China;
    2 Nanjing University, Nanjing 210008, China
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Li Xianguo (李先国), Shen Jianyi (沈俭一), Zhong Bing (钟 炳), Chen Yi (陈 懿), Peng Shaoyi (彭少逸), Wang Qin (王 琴), Wu Dong (吴 东). A MÖSSBAUER SPECTROSCOPIC STUDY ON THE STRUCTURE OF Fe—M ULTRAFINE PARTICLE CATALYSTS (M=Mn, Zn, Mg)*.Nuclear Science and Techniques, 1992, 3(2): 149

Abstract: The structure of Fe-M ultrafine particle catalysts was investigated by in situ Mössbauer spectroscopy. Emphasis has particularly been put on the effect of the second metal component. It was found that the incorporation of second metal component hinders the reduction and carburization of iron- containing phase in the presence of H2 and CO, and the degree of hindrance is in the order of Mg>Mn>Zn due to the interaction between iron and the second metal component. Consequently, the formation of light olefinic products is in the order of Fe- Mg> Fe- Mn> Fe-Zn catalysts consistent with tie F- T synthesis performance.

Key words: M?ssbauer spectroscopy, Fe-M catalysts, Ultrafine particle