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Shaping techniques of adsorbents and their applications in gas separation: a review
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-09-10 , DOI: 10.1039/d2ta04352a Junye Wu 1 , Xuancan Zhu 1 , Fan Yang 1 , Ruzhu Wang 1 , Tianshu Ge 1
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-09-10 , DOI: 10.1039/d2ta04352a Junye Wu 1 , Xuancan Zhu 1 , Fan Yang 1 , Ruzhu Wang 1 , Tianshu Ge 1
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To facilitate the large-scale deployment of the adsorption-based gas separation technique, the integration of adsorbents derived from laboratories with gas–solid contactors in the industrial system should be considered. Compared to the conventional method to pack the adsorbent powder into the reaction bed, the strategies of shaping materials into structured adsorbents and utilizing gas–solid contactors with advanced architectures present improved efficiency and attract increasing attention. The reduced gas flow pressure drop and the increased thermal and mass transfer performance contribute to cutting down the operation energy consumption. To this end, this paper reviews the recent advances in the shaping process for adsorbents. First, the alternative geometric forms of structured adsorbents are introduced, and key metrics for structured adsorbent evaluation are summarized. Then, the effects of textural and geometric properties are discussed. Next, the typical steps and characteristics of the main techniques for adsorbent shaping are elaborated. The gas separation performance of structured adsorbents is compared. Further, from a practical point of view, the routes to integrate these structured adsorbents into suitable gas–solid contactors, as well as the corresponding cyclic processes and operation strategies, are discussed briefly. It is concluded that shaping techniques should be appropriately adopted according to the adsorbent properties, and the structure of the adsorbent should be designed according to the application requirements. This paper can serve as a reference for structured adsorbent design and promote the development of the adsorption-based gas separation technique.
中文翻译：
吸附剂成型技术及其在气体分离中的应用：综述
为了促进基于吸附的气体分离技术的大规模部署，应考虑将来自实验室的吸附剂与工业系统中的气固接触器集成。与将吸附剂粉末装入反应床的传统方法相比，将材料成型为结构化吸附剂并利用具有先进结构的气固接触器的策略提高了效率并引起了越来越多的关注。降低的气流压降和提高的传热传质性能有助于降低运行能耗。为此，本文回顾了吸附剂成型工艺的最新进展。首先，介绍了结构化吸附剂的替代几何形式，总结了结构化吸附剂评估的关键指标。然后，讨论了纹理和几何特性的影响。接下来，阐述了吸附剂成型主要技术的典型步骤和特点。比较了结构化吸附剂的气体分离性能。此外，从实践的角度，简要讨论了将这些结构化吸附剂整合到合适的气固接触器中的途径，以及相应的循环过程和操作策略。得出的结论是，应根据吸附剂的性质适当采用成型工艺，并根据应用要求设计吸附剂的结构。
更新日期：2022-09-10
中文翻译：
吸附剂成型技术及其在气体分离中的应用：综述
为了促进基于吸附的气体分离技术的大规模部署，应考虑将来自实验室的吸附剂与工业系统中的气固接触器集成。与将吸附剂粉末装入反应床的传统方法相比，将材料成型为结构化吸附剂并利用具有先进结构的气固接触器的策略提高了效率并引起了越来越多的关注。降低的气流压降和提高的传热传质性能有助于降低运行能耗。为此，本文回顾了吸附剂成型工艺的最新进展。首先，介绍了结构化吸附剂的替代几何形式，总结了结构化吸附剂评估的关键指标。然后，讨论了纹理和几何特性的影响。接下来，阐述了吸附剂成型主要技术的典型步骤和特点。比较了结构化吸附剂的气体分离性能。此外，从实践的角度，简要讨论了将这些结构化吸附剂整合到合适的气固接触器中的途径，以及相应的循环过程和操作策略。得出的结论是，应根据吸附剂的性质适当采用成型工艺，并根据应用要求设计吸附剂的结构。
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