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自Benninghoven。A 提出静态二次离子质谱(Static Secondary Ion Mass Spectrometry或SSIMS)方法以来,它就成为一种极灵敏的表面分析技术。近年来,SSIMS技术在多相催化研究中的应用日益广泛。我们曾成功地用SSIMS表征过MoO_3-NiO-P_2O_5/γ-Al_2O_3催化剂的表面结构层次.本工作中,我们应用SSIMS,并结合XPS对新型催化剂MoO_-CoO/TiO_2-Al_2O_3的表面结构层次和表面状态作了研究.实验结果和我们原先用PASCA(Positron
Since Benninghoven. A proposed a static secondary ion mass spectrometry (Static Secondary Ion Mass Spectrometry or SSIMS) method, it has become a very sensitive surface analysis technology. In recent years, the application of SSIMS technology in heterogeneous catalysis has been widely used. We have successfully characterized the surface structure of MoO_3-NiO-P_2O_5 / γ-Al_2O_3 catalysts by SSIMS.In this work, we applied SSIMS and combined XPS on the surface structure of the new catalyst MoO_-CoO / TiO_2-Al_2O_3 State was studied.The experimental results and we originally use PASCA (Positron