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

Li Xianguo，

Shen Jianyi，

Zhong Bing，

Chen Yi，

Peng Shaoyi，

Wang Qin，

Wu Dong

Nuclear Science and Techniques

Vol.3, No.2

pp.149-153

Published in print 01 May 1992

36900

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 the F-T synthesis performance.

Mössbauer spectroscopyFe-M catalystsUltrafine particle

REFERENCES

[1]

Bussemeier B, Frohning C D, Cornils B. Hydrocarbon Processing, 1976, 55: 105.

[2]

Li X G. PhD Thesis. Taiyuan: Institute of Coal Chemistry, Academia Sinica, 1992.

[3]

Kistner D C, Sunyar A W. Phys Rev Lett, 1960, 4: 412.

[4]

Gager H M, Hobson M C. Catal Rev Sci Eng, 1975, 11: 117.

[5]

Travis J C. In: May L ed. An introduction to Mössbauer spectroscopy. New York: Plenum, 1971.