Abstract

The effect of iron oxide additives on the formation of the microstructure of supported 1 wt % Pt/(Fe₂O₃–TiO₂) catalysts, the electronic state of platinum, and the catalytic properties of the catalysts in the CO oxidation reaction has been studied. The synthesized catalyst has exhibited a higher activity than that of a 1 wt % Pt/TiO₂ catalyst at identical amounts of platinum in the samples. It has been found that the introduction of iron oxide in an amount of up to 10 wt % leads to the formation of a solid solution of iron ions in titania with an anatase structure. The supporting of platinum has led to a decrease in the particle size and an increase in the content of platinum in the Pt^δ+ state. An optimum chemical composition of the catalyst that provides the highest activity in the studied reaction has been determined.

中文翻译：

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一氧化碳氧化反应中氧化铁添加剂对 Pt/TiO2 催化剂载体组合物的协同作用

摘要

氧化铁添加剂对负载 1 wt % Pt/(Fe ₂ O ₃ –TiO ₂ ) 催化剂微观结构的形成、铂的电子态以及催化剂在 CO 氧化反应中的催化性能的影响已得到证实。学习了。在样品中相同量的铂下，合成的催化剂表现出比1wt% Pt/TiO ₂催化剂更高的活性。已经发现，以至多10重量％的量引入氧化铁导致形成具有锐钛矿结构的铁离子在二氧化钛中的固溶体。铂的负载导致粒径减小，铂在 Pt ^δ+中的含量增加状态。已确定在所研究的反应中提供最高活性的催化剂的最佳化学组成。