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研制和改进催化剂,需了解催化剂的结构、表面状态、表面中问物等。常用的方法有X射线衍射、电子显微镜、光电子能谱、红外等。但这些设备不仅结构复杂、价格昂贵,更主要的是一般不能给出在工作条件下的信息(特别当活性组份含量很低,分散度很大时)。例如,常用的高度分散的铂重整催化剂,其中Pt<1%,用X射线衍射和电子显微镜难以观测铂的存在。而应用新近发展起来的程序升温还原技术,则完全可以测出。该项技术,设备简单、灵敏度高。只
Development and improvement of the catalyst, need to understand the structure of the catalyst, the surface state, surface interrogation and so on. Common methods are X-ray diffraction, electron microscopy, photoelectron spectroscopy, infrared and so on. However, these devices are not only complicated in structure but also expensive, but more importantly, they generally can not give information under working conditions (especially when the active ingredient content is very low and the degree of dispersion is great). For example, the commonly used highly dispersed platinum reforming catalysts, where Pt <1%, the presence of platinum is difficult to observe by X-ray diffraction and electron microscopy. The application of the newly developed program temperature reduction technology, it can be measured. The technology, equipment, simple, high sensitivity. only