一维协调聚合物的超分子组装,以有效地分离和
Liangying Li1,2,3, Lihang Chen1,4, Lidong Guo1
1Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, P. R. China.
ACS applied materials & interfaces
|August 24, 2023
概括
研究人员开发了新的协调聚合物,以有效地从 (Xe) 与 (Kr) 进行分离. 这些材料具有很高的XE选择性和吸收性,为气体净化提供了节能解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 分离科学 分离科学
背景情况:
- 对于工业应用而言,有效地将 (Xe) 与 (Kr) 分离至关重要,但仍然具有挑战性.
- 基于吸附的方法提供能源效率,但需要高度选择性的吸附剂.
研究的目的:
- 开发先进的协调聚合物,用于从惰性气体中选择性XE分离.
- 为了研究M(II) -dhbq材料的吸附特性和选择性,为Xe.
主要方法:
- 合成超分子协调聚合物M(II) -dhbq (M=Mg, Mn, Co, Zn) 的合成.
- 孔径大小,金属位密度和气体吸附性质的表征.
- 密度函数理论 (DFT) 计算以了解Xe-吸收物相互作用.
主要成果:
- M(II) -dhbq材料表现出高密度的开放金属部位和XE捕获的最佳孔径.
- Mn-dhbq在298 K.表现出最高的Xe吸收 (3.1 mmol/g) 和Xe/Kr选择性 (11.2) 在298 K.
- 观察到Xe对O2,N2和Ar的异常选择性,突破性实验证实了有效的歧视.
结论:
- 超分子协调聚合物M(II) -dhbq是选择性XE分离的高效吸附剂.
- 在Mn-dhbq中的开放金属位点在Xe的强亲和和选择性吸附中发挥着至关重要的作用.
- 这些材料为工业 Xe 净化提供了有希望的,节能的替代品.
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