Evaluating the purification and activation of metal-organic frameworks from a technical and circular economy perspective
Evaluating the purification and activation of metal-organic frameworks from a technical and circular economy perspective
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DOI：
10.1016/j.ccr.2020.213578
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发表时间：
2021-02
影响因子：
20.6
通讯作者：
John Luke Woodliffe;R. Ferrari;I. Ahmed;Andrea Laybourn
中科院分区：
文献类型：
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作者：
John Luke Woodliffe;R. Ferrari;I. Ahmed;Andrea Laybourn
金属-有机骨架（MOFs）是由有机分子连接的金属离子或金属簇组成的高度多孔的材料。MOFs的高价值来自其结构内的空空间量（高达90%）及其可调结构和功能。为了充分利用它们的多孔性，必须首先纯化和活化M0 F，由此将合成后存在的孔封闭剂从M0 F的孔中除去，从而暴露它们的高内表面积。从技术角度来看，由于可能的框架崩溃，以及从可持续性角度来看，由于高能量和资源需求，纯化和活化可能具有挑战性。循环经济模式旨在消除浪费，避免有限资源的持续使用，同时平衡社会，经济和环境的考虑。它在化学工业中的应用导致了可持续化学领域的发展，该领域专注于设计，制造和使用高效和更环保的化学产品和工艺。在这篇文章中，我们批判性地评估了当前MOF纯化和活化方法的技术优势和挑战，包括循环经济模型的原则，重点考虑可扩展性，减少废物，材料再利用和能源效率。我们还讨论了循环经济方法如何为未来经济和环境可持续的MOF纯化和活化工艺的设计和制造提供信息，这些工艺是实现这些材料提供的巨大机会的关键。
Metal-organic frameworks (MOFs) are highly porous materials consisting of metal ions or clusters linked by organic molecules. The high value of MOFs arises from the amount of empty space within their structure (up to 90%) and their tuneable structures and functionalities. To take full advantage of their porosity, MOFs must first be purified and activated whereby pore blocking agents present after synthesis are removed from the pores of the MOF thus exposing their high internal surface areas. Purification and activation can be challenging from both a technical perspective, due to possible framework collapse, and a sustainability perspective, due to high energy and resource demands. The circular economy model aims to eliminate waste and avoid continual use of finite resources whilst balancing considerations of society, the economy, and the environment. Its application to the chemical industry has resulted in the field of sustainable chemistry which focuses on the design, manufacture, and use of efficient and more environmentally benign chemical products and processes. In this contribution we critically evaluate the technical benefits and challenges of current MOF purification and activation methods, including against principles from the circular economy model, focusing on considerations for scalability, waste reduction, material reuse, and energy efficiency. We also discuss how a circular economy approach could inform the design and manufacture of future economically and environmentally sustainable MOF purification and activation processes which are key to realising the immense opportunities offered by these materials.