碱土和 / 或稀土助剂改性氨催化分解催化剂及其制备方法
Co-MgO catalysts doped with alkaline earth and rare earth metals were prepared by co-precipitation, which solved the problem of low ammonia decomposition efficiency of transition metal-magnesium oxide catalysts at low temperatures and achieved a highly efficient ammonia decomposition reaction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG UNIV
- Filing Date
- 2023-10-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing transition metal-magnesium oxide catalysts exhibit low conversion rates in ammonia decomposition reactions at low temperatures, severely impacting the catalytic decomposition efficiency and utilization rate of ammonia.
Co-MgO catalysts doped with alkaline earth metals and/or rare earth metals were prepared by adding oxalic acid solution to a mixed solution of magnesium salts, transition metal salts and alkaline earth metal salts or rare earth metal salts for co-precipitation. The electronic structure of the catalyst was adjusted to enhance its activity.
The low-temperature activity of transition metal-magnesium oxide catalysts was significantly improved, and the conversion rate of ammonia decomposition reaction was increased. In particular, the catalyst exhibited higher activity and stability after the addition of rare earth elements La, Ce, Y and alkaline earth metals Ca, Sr, Ba as promoters.
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Figure CN117463347B_ABST