| 用XPS研究几种沸石的表面组成 |
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| 引用本文： | 孟中岳.用XPS研究几种沸石的表面组成[J].高等学校化学学报,1986,7(7):613. |
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| 作者姓名： | 孟中岳 |
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| 作者单位： | 南京大学化学系 |
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| 摘 要： | 本文用XPS研究Y、USY和ZSM-5沸石的表面组成,结果表明:沸石的表面组成(Al/Si)s与其体相(Al/Si)b原子比及其骨架Al在晶格中结合强弱有关。Y和载NiY沸石表面层缺Al,USY和ZSM-5沸石表面高度Al富集。在300-600℃加热载NiHY沸石,不伴有Al的移去,结果显示出沸石表面明显缺Al。
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| 收稿时间： | 1985-01-09 |
A XPS Study of the Surface Composition of Zeolites |
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| Meng Zhongyue.A XPS Study of the Surface Composition of Zeolites[J].Chemical Research In Chinese Universities,1986,7(7):613. |
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| Authors: | Meng Zhongyue |
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| Institution: | Department of Chemistry, Nanjing University, Nanjing |
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| Abstract: | In the present paper,we extended these studies of the surface composition of Y,USY,and ZSM-5 zeolites using XPSmethod.The results show that the surface composition (Al/Si) of Y,USY,and ZSM-5 zeolites depend on both that of the bulk and the framwork aluminum strongly or weakly linked in the lattice.The surface layers of Yand Ni-containing Yzeolites are partially deficient in Al.The surface layers of USYand ZSM-5 zeolites are more rich in that element.Again,heating of the NiHYat 300-600℃without the Al removed,gave the results indicating that the surface deficient in Al may be more obvious. |
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