一种具有低衰减特性的小粒径铈锆固溶体及其制备方法
By adjusting the pH value of the acidic cerium and zirconium solution, the preparation process of cerium-zirconium solid solution was controlled, which solved the problems of insufficient low attenuation and anti-sintering properties. A cerium-zirconium solid solution with low attenuation and small particle size was prepared, which improved the purification performance of the catalyst.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGMEN KANHOO IND CO LTD
- Filing Date
- 2025-09-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to prepare cerium-zirconium solid solutions that combine low decay and anti-sintering properties, resulting in low utilization efficiency of precious metals and insufficient catalyst purification performance.
By adjusting the pH values of acidic solutions of cerium and zirconium respectively, the precipitation rate of cerium ions and the formation of zirconium particles are controlled to form a uniformly mixed suspension. Then, an alkaline solution is added to precipitate and calcined to prepare a cerium-zirconium solid solution.
While maintaining a high fresh specific surface area, it significantly improves the anti-sintering ability of oxygen storage materials, obtains excellent characteristics of low attenuation and small particle size, and enhances the overall performance of the catalyst.
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Figure CN121288802B_ABST