沸石
吸附
选择性
X射线光电子能谱
咪唑
分子
选择性吸附
材料科学
无机化学
金属
化学工程
化学
物理化学
催化作用
有机化学
工程类
作者
Hanbang Liu,Ding Yuan,Liping Yang,Jiacheng Xing,Shu Zeng,Shutao Xu,Yunpeng Xu,Zhongmin Liu
出处
期刊:Materials horizons
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:9 (2): 688-693
被引量:8
摘要
The traditional zeolites used in air separation are generally N2-selective adsorbents. It was found for the first time that the O2/N2 adsorption selectivity can be reversed by directly decorating the Ce metal ion sites of a traditional Y zeolite with imidazole molecules, which results in a novel O2 adsorbent. The O2/N2 selectivity changes from 0.9 to 1.6 under normal conditions, and most importantly, the O2 adsorbent is recyclable. The in situ XPS characterization results indicate that the imidazole modification can change the electronic state of Ce in the Y zeolite and increase its affinity for O2, which is confirmed by theoretical calculations. Dynamic breakthrough adsorption experiments show that the adsorbent has significant application potential in air separation.
科研通智能强力驱动
Strongly Powered by AbleSci AI