一种多污染物协同去除的三效催化剂制备方法及应用
By introducing multiple transition metals or rare earth metals onto molecular sieves, combined with acid treatment and impregnation methods, the problem of synergistic removal of N2O, NH3, and CO in ammonia-coal co-fired boilers was solved, achieving a highly efficient purification effect for multiple pollutants.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG UNIV
- Filing Date
- 2023-07-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient for the efficient and synergistic removal of N2O, NH3 and CO in ammonia-coal co-fired boilers. Traditional catalysts have insufficient activity at low temperatures and are costly, while molecular sieves have insufficient redox capacity and cannot meet stringent environmental emission requirements.
A combination of acid treatment and ion exchange impregnation is used to introduce various transition metals or rare earth metals into molecular sieves to form a multi-active-site catalyst. Metal nanoparticles are uniformly distributed in the molecular sieve channels through ion exchange and impregnation, thereby enhancing the redox capacity and acidity and achieving the synergistic removal of multiple pollutants.
The decomposition of N2O, oxidation of NH3, and oxidation of CO were achieved in the same process, which improved the reaction activity and selectivity of the catalyst, significantly reduced competitive adsorption, and realized the deep synergistic treatment of multiple pollutants.
Smart Images
Figure CN116618085B_ABST