Hierarchical MOFs with Good Catalytic Properties and Structural Stability in Oxygen‐Rich and High‐Temperature Environments

影响因子：13.3

DOI码：10.1002/small.202309302

发表刊物：Small

关键字：catalytic mechanism; decomposition kinetics; high temperature catalysis; metal-organic framework materials

摘要：Metal-organic framework materials are ideal materials characterized by open frameworks, adjustable components, and high catalytic activity. They are extensively utilized for catalysis. Due to decomposition and structural collapse under high temperatures and an oxygen-rich environment, the potential of thermal catalysis is greatly limited. In this research, Co-rich hollow spheres (Co-HSs) with a gradient composition are designed and synthesized to investigate their thermal catalytic properties in the ammonium perchlorate（AP）system. The results demonstrate that Co-HSs@AP exhibits good thermal catalytic activity and a high-temperature decomposition of 292.5 °C, which is 121.6 °C lower than pure AP. The hierarchical structure confers structural stability during the thermal decomposition process. Thermogravimetry-infrared indicates that the inclusion of Co-HSs successfully boosts the level of reactive oxygen species and achieves thorough oxidation of NH3. Based on the above phenomenon, macro dynamics calculations are carried out. The results show that Co-HSs can promote the circulation of lattice oxygen and reactive oxygen species and the multidimensional diffusion of NH3 in an oxygen-rich environment. This material has significant potential for application in the fields of thermal catalysis and ammonia oxidation.

合写作者：Zhou Peng,Tang Xiaolin,Zeng Qihui,Yi Shengping,Liao Jun,Hu Mingjie,Wu Dan,Zhang Bin

论文类型：期刊论文

通讯作者：Liang Jiqiu*,Huang Chi*

学科门类：理学

文献类型：J

卷号：20

页面范围：202309302

ISSN号：1613-6810

是否译文：否

发表时间：2024-02-19

收录刊物：SCI

发布期刊链接：https://doi.org/10.1002/smll.202309302