通过imide凝结和协调组合合成的金属有机框架的比较研究
Qiao Liu1, Jordon S Hilliard1, Zhongzheng Cai1
1Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Ave Columbus OH 43210 USA wade.521@osu.edu.
RSC advances
|September 2, 2024
概括
新的金属有机框架 (MOFs) 使用imide凝结生成. 这些MOF证明了选择性气体吸附,特别是乙超过二氧化碳,超过,提供了一个新的MOF设计策略.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 纳米技术纳米技术
背景情况:
- 金属有机框架 (MOFs) 是一种先进的多孔材料,具有多样化的应用.
- 传统的MOF合成方法可能很复杂,并限制了结构多样性.
- 开发新的,高效的MOF合成路径对于扩大其实用性至关重要.
研究的目的:
- 使用预制集群的imide凝结合成新型MOFs (1-XDI系列).
- 将这些新MOF的特性与通过传统协调组合合成的类似物 (2-XDI) 进行比较.
- 研究合成的MOFs的气体吸附和分离能力.
主要方法:
- 氨基功能化五核集群的合成.
- 与各种有机二化物 (PMDA,NDA,BPDA,HFIPA) 进行的胺基凝结反应.
- 使用ATR-IR,H NMR,元素分析和N2气体吸附异温体进行表征.
主要成果:
- 成功合成了1-XDI系列的MOFs.
- 描述证实了MOFs的形成和结构.
- 在N2吸附过程中,发现了适度的多孔性 (30-552 m2 g-1).
- 所有的MOF都显示出对CO2吸附的选择性C2H2.
- 特定的MOFs (2-PMDI,2-BPDI) 对C3H6/C3H8分离具有很高的选择性.
结论:
- 预制金属有机集群的伊米德凝结是MOF合成的可行和有效途径.
- 合成的MOF具有选择性气体吸附特性,与气体分离技术相关.
- 这种方法扩大了设计和创建具有定制功能的新型MOF的工具包.
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