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): 107

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INVESTIGATION OF THE SOLID— SOLID SURFACE ADSORPTION OF Eu2O3 ON AMORPHOUS Al2O3

Liu Rongchuan (刘荣川)1, Yan Qijie (颜其洁)1, Zhai Ya (翟 亚)2, Qi Haihua (戚海华)1, Hsia Yuanfu (夏元复)1, Jiang Jianzhong (蒋建中)3, , U Gonser3   

  1. 1 Nanjng University, Nan ing 219008, China;
    2 Southeast University, Nan ing 210018, China;
    3 Werkstoffwissenschaften, Universit?t des Saarlandes, D- 6600 Saarbrücken, Germany
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Liu Rongchuan (刘荣川), Yan Qijie (颜其洁), Zhai Ya (翟 亚), Qi Haihua (戚海华), Hsia Yuanfu (夏元复), Jiang Jianzhong (蒋建中), U Gonser. INVESTIGATION OF THE SOLID— SOLID SURFACE ADSORPTION OF Eu2O3 ON AMORPHOUS Al2O3.Nuclear Science and Techniques, 1992, 3(2): 107

Abstract: Solid-solid surface adsorption of Eu2O3 on amorphous Al2O3 have been investigated by Mössbauer spectroscopy, X-ray diffraction analysis and laser Raman spectra (LRS). No X-ray diffraction peak of crystalline Eu2O3 can be found for all samples studied. The LRS show that two peaks at 998 and 1051 cm-1 assigned to two-dimensional surface europium-oxygen species appear at Eu2O3 content of 18.7 wt%. The peak at 1068 cm-1 due to the surface species and another peak at 342 cm-1 due to crystalline Eu2O3 content start to appear for the sample with an Eu2O3 content of 36.5 wt%. The dispersity of Eu2O3 on the surface of amorphous Al2O3 were compared with that γ-Al2O3, η- Al2O3 and SiO2 gel. The results of these studies indicate that the structure of Eu2O3 dispersed onto the support surface depend on the structure of support and that there is an inductive effect of support on the structure of theEu2O3.

Key words: M?ssbauer spectroscopoy, XRD, LRS, Eu2O3, Amorphous, Al2O3, Solid- solid surface adsorptioη-