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首页> 外文期刊>The Catalyst Review Newsletter >3D Characterization of Gold Nanoparticles Supported in Heavy Metal Oxide Catalysts by HAADF-STEM Electron Tomography...
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3D Characterization of Gold Nanoparticles Supported in Heavy Metal Oxide Catalysts by HAADF-STEM Electron Tomography...

机译：HAADF-STEM电子断层成像技术对重金属氧化物催化剂中负载的金纳米粒子的3D表征...

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Electron tomography has proven to be a powerful tool for the characterization of heterogeneous catalysts, and particularly of supported metal catalysts. The application of HAADF-STEM to supported catalysts has focused on materials consisting predominantly of materials consisting predominantly of metal nanoparticles dispersed within or over light support materials, such as zeolites, alumina, or silica for which large differences between metal and support element atomic numbers contribute to a high contrast in the images. However, the use of this technique for catalysts based on heavy-element (transition metal or lanthanoid) supports has not been reported to date. Herein the focus is on gold catalysts supported on a Cd-Tb-Zr mixed oxide.
机译：电子断层扫描已被证明是表征多相催化剂，特别是负载型金属催化剂的有力工具。 HAADF-STEM在负载型催化剂上的应用已集中在主要由以下材料组成的材料上：主要由分散在轻质载体材料之内或之上的金属纳米颗粒组成，例如沸石，氧化铝或二氧化硅，其金属和载体元素原子序数之间的差异很大在图像中具有高对比度。然而，迄今为止，尚未报道该技术用于基于重元素（过渡金属或镧系元素）载体的催化剂。本文的重点是负载在Cd-Tb-Zr混合氧化物上的金催化剂。

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