一种基于等离子体处理的铱基催化剂及其制备方法

By employing deposition and plasma treatment techniques, uniform loading and surface modification of iridium-based catalysts were achieved, solving the problems of iridium particle agglomeration and stability, and improving the activity and stability of the catalysts, making them suitable for industrial applications.

CN122406271APending Publication Date: 2026-07-17GANTRY LAB

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GANTRY LAB
Filing Date
2026-06-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, the loading process of iridium-based catalysts has problems such as iridium particle agglomeration, insufficient exposure of active sites and poor long-term stability. In addition, the plasma treatment conditions are not optimized enough, which limits the industrial application of iridium-based catalysts.

Method used

A deposition-precipitation method combined with precise pH control and nitrogen atmosphere protection was used to achieve uniform deposition of iridium ions on the support surface. The interaction between iridium and the support was enhanced through hydrothermal reaction. Subsequently, plasma treatment was carried out under an argon atmosphere to regulate the surface electronic structure of the catalyst and remove impurities.

Benefits of technology

It improves the dispersibility of iridium and the activity of the catalyst, reduces the amount of precious metals used, and enhances the long-term stability and catalytic performance of the catalyst, making it suitable for industrial applications.

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Abstract

本发明公开了一种基于等离子体处理的铱基催化剂及其制备方法,属于催化材料技术领域。该方法包括:将载体与氯铱酸溶液混合分散,通入氮气并升温至80℃恒温搅拌;在氮气保护下滴加KOH溶液调节pH至11‑12,使铱离子沉积于载体表面;然后转移至水热釜中于180℃进行水热反应,经离心洗涤、干燥、研磨,得到催化剂前驱体;再将前驱体置于等离子体处理装置中,通入氩气,在电压20‑40kV、电流0.4‑0.8mA条件下处理0.25‑1h,即得所述铱基催化剂。本发明通过沉积沉淀法结合等离子体处理,实现了铱活性组分的高度分散和表面电子结构的优化,所得催化剂具有过电位低、稳定性好、贵金属用量少等优点,适用于电解水析氧反应。
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