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Design and synthesis of model and practical palladium catalysts using atomic layer deposition

机译：设计和合成模型和实用使用原子层沉积钯催化剂

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摘要

We investigated the "one-batch" synthesis of model and practical palladium catalysts using atomic layer deposition (ALD). Two types of model catalysts and one type of powder-based nanocatalyst were synthesized simultaneously by ALD under viscous flow conditions. In addition, Pd/TiO2(110) model catalysts were prepared by the identical ALD process but under ultrahigh vacuum conditions. Because of the self-limiting surface reaction that defines ALD, the local structure of all the Pd catalysts were essentially the same as confirmed by a suite of microscopic and spectroscopic characterization techniques. A comprehensive understanding of the Pd-based catalysts was achieved by applying both surface science probes and advanced synchrotron techniques, and by strategically selecting the catalyst substrate best suited for each characterization. Both X-ray absorption spectroscopy and X-ray resonant photoelectron spectroscopy suggested that Pd only weakly interacted with the TiO2 support. The one-batch synthesis approach facilitated by ALD can potentially bridge the "synthesis gap" between model catalysts and practical catalysts.
机译：我们调查了“一批”的综合模型和实际使用原子钯催化剂层沉积(ALD)。催化剂和一种状同时nanocatalyst合成ALD粘性流条件下。Pd /二氧化钛催化剂是由(110)模型相同的退化过程但在超高真空条件。反应,定义“肾上腺脑白质退化症”,当地的结构所有的钯催化剂在本质上是一样的通过一套微观和确认光谱表征技术。Pd-based的全面了解催化剂是通过应用表面科学探测和先进的同步技术和战略选择催化剂基质最适合鉴定。光谱和x射线共振光电子光谱分析表明,Pd只有弱与二氧化钛支持。肾上腺白质退化症患者可以通过合成方法潜在的桥梁之间的“合成缺口”模型催化剂和实用的催化剂。

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