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    多孔吸附材料用于含氟气体吸附分离的研究进展

    Research progress on porous adsorbent materials for fluorinated gas adsorption and separation

    • 摘要: 含氟气体(F-gases)主要包括氯氟烃、氢氯氟烃、氢氟碳化物、全氟化合物、六氟化硫和三氟化氮等,因其优异的化学稳定性、热力学性能及电绝缘能力,被广泛应用于制冷、半导体制造以及电力设备绝缘等工业领域。然而,这些特性也导致其具备极长的大气寿命与极强的红外辐射吸收能力,从而表现出极高的全球变暖潜能值,对全球气候系统构成持续且严重的威胁。尽管《关于消耗臭氧层物质的蒙特利尔议定书》(以下简称《蒙特利尔议定书》)及其《〈关于消耗臭氧层物质的蒙特利尔议定书〉基加利修正案》(以下简称《基加利修正案》)等国际法律文件对F-gases的生产与使用实施严格管控,但受限于其在诸多工业领域的不可替代性,全球范围内大气中F-gases浓度持续攀升,因此开发高效、可行的F-gases处理处置技术尤为迫切。系统综述了F-gases的来源、环境影响及管控政策;基于文献计量分析揭示了F-gases处理处置技术研究进展,重点聚焦于当前该领域的研究热点——吸附技术;围绕金属有机框架、分子筛、碳材料、共价有机框架及多孔芳香框架等多孔吸附材料,总结了通过结构调控与表面修饰以提升F-gases吸附性能与选择性的策略,阐明了不同多孔材料对各类F-gases的吸附机理与循环稳定性,并进一步剖析了在高湿度、多组分竞争吸附等复杂工况下吸附技术走向规模化应用所面临的挑战。旨在为开发高效吸附材料、优化F-gases吸附工艺提供参考,从而推动F-gases深度减排,助力实现“双碳”战略目标提供理论参考。

       

      Abstract: Fluorinated gases (F-gases) , primarily consisting of chlorofluorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons, perfluorinated compounds, sulfur hexafluoride, and nitrogen trifluoride, are widely used in the industrial sectors such as refrigeration, semiconductor manufacturing, and electrical insulation for power equipment due to their excellent chemical stability, thermodynamic properties, and electrical insulation capabilities. However, these characteristics also result in their long atmospheric lifetime and strong infrared radiation absorption capacity, leading to a high global warming potential and posing a continuous and severe threat to the global climate system. Although international legal instruments such as The Montreal Protocol on Substances that Deplete the Ozone Layer (hereinafter referred to as the Montreal Protocol) and its Kigali Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer (hereinafter referred to as the Kigali Amendment), along with relevant national laws and regulations, have imposed strict controls on the production and use of F-gases, their irreplaceability in many industrial fields has led to a continuous increase in their atmospheric concentrations worldwide. Therefore, the development of efficient and feasible F-gases treatment and disposal technologies is particularly urgent. This review systematically summarizes the emission sources, environmental impacts, and control policies of F-gases; based on literature metrics analysis, it reveals the research progress in F-gases treatment and disposal technologies, with a focus on the current research hotspot—adsorption technology. It summarizes strategies for enhancing the adsorption performance and selectivity of F-gases through structural regulation and surface modification, clarifies the adsorption mechanisms and cycle stability of various materials for different types of F-gases, and further analyzes the challenges faced in scaling up adsorption technology under complex operating conditions such as high humidity and multi-component competitive adsorption. This review aims to provide references for the development of efficient adsorbent materials and the optimization of F-gases adsorption processes, thus offering theoretical support for achieving deep reduction of F-gases and contributing to the realization of the "dual carbon" strategic goals.

       

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