期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 346, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2022.112313
关键词
Phosphorus; Zeolite; NH3-SCR; Hydrothermal aging
类别
资金
- National Nat- ural Science Foundation of China
- [22106101]
The study reveals that CuLTA exhibits excellent hydrothermal stability, while CuCHA is prone to structural damage at high temperatures. Phosphorus poisoning has a significant impact on CuCHA, but has little effect on CuLTA.
CuCHA and CuLTA were synthesized and examined for phosphorus poisoning, followed by hydrothermal aging. The CuLTA showed excellent hydrothermal stability, however, the CuCHA suffered dramatic structural damage after aging at 900 degrees C. The devastation of the aged CuCHA led to the disappearance of Cu active sites upon aging, especially ZCuOH sites. CuLTA retained most of the Cu active sites after aging. Phosphorus poisoning was found to reduce the hydrothermal stability of CuCHA, whereas CuLTA was not affected. Importantly, the treatment of hydrothermal aging was proved to regenerate phosphorus poisoned ZCuOH sites in CuLTA.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据