关于MOF-808作为缺陷工程Zr-MOF用于选择性催化氧化的一种缺陷工程Zr-MOF的功能化和非功能化的综合研究
Negin Khosroshahi1, Samira Doaee1, Vahid Safarifard1
1Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran.
Heliyon
|May 30, 2024
概括
缺陷工程金属有机框架 (MOF) 显示了增强的催化活性. 基功能化MOF选择性氧化甲基硫化物到硫,效率为91%,显示了高级氧化催化潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 纳米技术 纳米技术
背景情况:
- 金属有机框架 (MOF) 为催化提供可调节的特性.
- 狭窄的空间和金属部位对于MOF的催化性能至关重要.
- 功能组和开放的金属位点可以修改MOF的催化效率.
研究的目的:
- 研究缺陷工程MOF的制备方法,结构性质和催化效率之间的关系.
- 通过超声波辅助链接器交换和溶热混合连接体方法合成缺陷工程的MOF.
- 评估甲基硫化物 (MPS) 选择性氧化中的催化性能.
主要方法:
- 通过超声波辅助链接器交换和溶热混合带方法合成缺陷工程的MOF:Ex-MOF-808和Mix-MOF-808.
- 使用泽塔电位分析,对MOF结构性质的表征,包括表面缺陷和功能组.
- 用于将甲基硫化物 (MPS) 选择性氧化为硫的MOF的催化评估.
主要成果:
- 与混合方法相比,超声波辅助交换方法的结果是MOF具有较高的表面缺陷和功能组.
- 混合MOF-808 ((NO2) 呈现出优异的基分散,导致MPS的选择性转化为硫达到91%.
- 合成的异质催化剂在三个催化周期中表现出稳定性.
结论:
- 缺陷工程和功能化是提高MOF催化活性的有效策略.
- 制备方法显著影响MOF的结构性质和催化性能.
- 基功能化MOF显示出作为先进氧化过程中稳定和高效的异质催化剂的巨大潜力.
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