在金属有机框架中进行中继吸附,以在环境温度下进行单步净化
Xiaoyu Li1, Yue Wu1, Shanshan Wang1
1School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
ACS applied materials & interfaces
|June 6, 2024
概括
本研究介绍了一种使用金属有机框架 (MOF) 的新型继电吸附策略,用于在环境温度下从天然气中高效,单步净化,解决全球短缺问题.
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:
- 全球 (He) 短缺需要创新的净化方法.
- 目前的热净化依赖于能源密集型的冷蒸.
- 在环境温度下从甲 (CH4) 和 (N2) 分离热量是具有挑战性的,因为它们具有相似的气体特性.
研究的目的:
- 开发一种具有成本效益的环境温度方法,用于生产高纯度的热.
- 使用特定的金属有机框架 (MOF) 实施继电器吸附策略.
- 为了从CH4,N2和He的三元混合物中净化He.
主要方法:
- 使用Ni ((ina) 2和MIL-100 ((Cr) MOF进行连续气体吸附.
- 采用继电器吸附策略进行选择性CH4和N2捕获.
- 进行了突破性实验,以评估热净化效率.
主要成果:
- 在Ni(ina) 中获得了15.39的CH4/He选择性记录2.
- 在MIL-100(Cr) 中实现了128.49的创纪录N2/He选择性.
- 在单个步骤中成功生产了高达99.99%纯度的He.
结论:
- 使用Ni () 2和MIL-100 (Cr) 的继电器吸附策略对于环境温度He净化非常有效.
- 证明了在成本和能源效率高的生产方面具有重要的工业潜力.
- 突出了研究的MOF的稳定性和显著的分离性能.
关键词:
吸附吸附是一种吸附.环境温度 环境温度 环境温度,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,金属-有机的框架.净化 净化 净化 净化更多相关视频
07:45Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
Published on: August 16, 2018
10.0K
11:38In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
Published on: February 1, 2020
15.9K
相关概念视频
Methods of Sterilization II: Chemical Methods
In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Washing, Drying, and Ignition of Precipitates
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
Filtration
Filtration is a physical separation process that involves passing a suspension through a porous medium to separate solids from fluids. During filtration, solids collect on the porous medium while liquids, also collectively known as the filtrate, pass through. The filtration medium is selected based on the filtration purpose, quantity, and nature of the precipitate. The general criteria for a suitable filtering medium are that it is inert, mechanically strong, nonabsorbent toward dissolved...
Extraction: Advanced Methods
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
Microbial Leaching
Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
