盐被限制在MIL-101 ((Cr) 中 - 定制复合吸附剂,以有效地收集大气中的水
Marina V Solovyeva1, Irina V Krivosheeva1, Larisa G Gordeeva1
1Boreskov Institute of Catalysis, Novosibirsk, Ac. Lavrentiev av. 5, Novosibirsk, 630090, Russia.
ChemSusChem
|June 5, 2023
概括
一种新型的复合吸附剂,CaCl2/MIL-101(Cr,在干旱地区显示大气水收集 (AWH) 的高吸水量. 这种材料表现出协同效应和由于孔隙封闭而增强的水运输,显示出可持续供水的巨大潜力.
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.
- 环境科学 环境科学
背景情况:
- 大气水收集 (AWH) 对于干旱地区的供水至关重要.
- 热驱动吸附方法为AWH提供了一个有前途的解决方案.
- 需要新的复合吸附剂来提高AWH的效率.
研究的目的:
- 开发和研究用于AWH的新型复合吸附剂.
- 在干旱条件下评估CaCl2/MIL-101(Cr) 的性能.
- 了解水吸附和运输在封闭环境中的机制.
主要方法:
- 用MIL-101Cr.合成复合吸附剂 (LiCl,LiBr,CaCl2,Ca(NO3) 2) 的合成方法.
- 使用SEM,XRD,N2吸附,热重力测量分析和2HNMR光谱学进行表征.
- 使用开发的复合材料对AWH系统的性能评估.
主要成果:
- 在模拟的干旱气候中,CaCl2/MIL-101 (Cr) 呈现出高净吸水率 (0.52-0.59 g H2O/g复合物).
- 在复合材料中观察到协同的吸水效应,超过了单个组件的性能.
- 在MIL-101 ((Cr) 中孔隙封闭改变了CaCl2水合物特性,降低了化温度并增强了水运输.
结论:
- CaCl2/MIL-101 ((Cr) 是一种高度有效的吸收剂,用于大气中的水收集.
- 该复合物在干旱地区显示出与其他AWH吸附剂相比的优越性能.
- 这些发现突出了封闭盐水合物的潜力,以有效地生产水.
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