| 锆基金属有机骨架材料用于氨吸附性能的研究 |
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| 引用本文： | 王毅,熊启钊,陈杨,杨江峰,李立博,李晋平. 锆基金属有机骨架材料用于氨吸附性能的研究[J]. 化工学报, 2022, 73(4): 1772-1780. DOI: 10.11949/0438-1157.20220021 |
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| 作者姓名： | 王毅 熊启钊 陈杨 杨江峰 李立博 李晋平 |
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| 作者单位： | 1.太原理工大学化学化工学院，山西 太原 030024;2.气体能源高效清洁利用山西省重点实验室，山西 太原 030024;3.太原理工大学煤科学与技术重点实验室，山西 太原 030024 |
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| 基金项目： | 国家自然科学基金项目(22090062,21908155)；;山西省回国留学人员科研资助项目(2021-053)； |
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| 摘 要： | 近年来，金属有机骨架材料（MOF）在气体吸附和储存领域得到了迅速发展，但由于结构的不稳定性，其在强腐蚀性气体氨（NH3）的吸附方面并不令人满意。考虑到NH3是唯一的无碳排放的氢能源载体，开发高效的储氨技术来载氢是有效的降低二氧化碳排放的手段。利用MOF材料具有的高比表面积和结构多样的特性，在NH3的吸附和储存方面具有广阔的应用前景。而NH3具有孤对电子，会攻击金属与配体之间形成的配位键，使MOF材料的结构遭到破坏。锆基金属有机骨架材料是公认结构稳定性较好的MOF材料，但其是否能胜任干燥NH3及含水条件下的稳定性仍未深入考察，由此需探究该系列材料在NH3吸附领域的适用性。在此，通过实验和计算模拟研究锆基系列的金属有机骨架UiO-66、NU-1000、MOF-801和 MOF-808的结构特征、稳定性和NH3吸附性能。结果表明，UiO-66、NU-1000和MOF-808在纯NH3环境下的稳定性较好，并且显示出高吸附量且可循环的氨吸附性能（13.04、6.38、9.65 mmol/g）。受限于水和氨对结构的协同破坏作用，NU-1000和MOF-801的结构均不能维持，而UiO-66和MOF-808的结构非常稳定，无论在干燥NH3环境及含水NH3环境下均能胜任而应用于NH3吸附和储存。
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| 关 键 词： | 金属有机骨架材料 锆基系列 氨吸附 稳定性 循环性 |
| 收稿时间： | 2022-01-06 |
Research on Zr-based metal-organic frameworks for NH3 adsorption |
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| WANG Yi,XIONG Qizhao,CHEN Yang,YANG Jiangfeng,LI Libo,LI Jinping. Research on Zr-based metal-organic frameworks for NH3 adsorption[J]. Journal of Chemical Industry and Engineering(China), 2022, 73(4): 1772-1780. DOI: 10.11949/0438-1157.20220021 |
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| Authors: | WANG Yi XIONG Qizhao CHEN Yang YANG Jiangfeng LI Libo LI Jinping |
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| Affiliation: | 1.College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;2.Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan 030024, Shanxi, China;3.Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China |
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| Abstract: | Metal-organic framework (MOF) has been developed rapidly in the fields of gas adsorption and storage in recent years, but they are unsatisfactory in the adsorption of strong corrosive gas ammonia (NH3) due to structural instability. Considering NH3 is the only carbon-free chemical energy carrier, developing efficient ammonia storage technology to carry hydrogen is an effective technology to reduce carbon dioxide emissions. MOFs exhibit great prospects for adsorption and storage of NH3 due to their high surface area and structural diversity advantages. NH3 has a lone pair of electrons, which will attack the coordination bond formed between the metal ion and the ligand, resulting in the structural destruction of MOFs. Herein, the structural characteristics, stability, and NH3 adsorption properties of Zr-based metal-organic frameworks, including UiO-66, NU-1000, MOF-801, and MOF-808, were investigated by experiments and computational simulations. The results showed that UiO-66 has excellent structural stability in NH3 adsorption with a high uptake of 13.04, 6.38 and 9.65 mmol/g. However, Due to the limited stability and low adsorption capacity, NU-1000 and MOF-801 are not suitable for ammonia adsorption under the humid environment. Conversely, the structure of UiO-66 and MOF-808 is very stable, which can be used in NH3 adsorption and storage applications both in dry and humid NH3 environments. |
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| Keywords: | metal-organic framework Zr-based series NH3 adsorption stability cycling ability |
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