Electrically conductive zeolite/carbon nanotubes honeycomb monoliths for enhanced electric swing adsorption

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-07-11 DOI:10.1016/j.mseb.2025.118603

Eduardo Pérez-Botella , Ravi Sharma , Matthias Schoukens , Mohsen Gholami , Jessica Mangialetto , Joeri F.M. Denayer

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Abstract

Electrification of temperature swing adsorption processes is necessary to align with the future energy paradigm. Joule heating has been identified as a viable method for regenerating adsorbent bed after saturation. In this work, we report the fabrication of novel composite monoliths with enhanced electrical properties for use in electrical swing adsorption (ESA) applications. In addition to zeolitic adsorbents (ZSM-5 or 13X) and binders, various amounts of multiwalled carbon nanotubes were added to tune the electrical conductivity of the composites. The monoliths were characterized in terms of their adsorption properties, electrical conductivity and Joule heating behavior. The most promising materials were further evaluated in ESA-based breakthrough experiments using synthetic flue gas (CO₂/N₂ 15:85 v/v) and 1-butanol vapor. These tests demonstrated the general suitability of the these composites in ESA-based separation processes, achieving rapid heating (under 1 min.) to temperatures up to 235 °C. Overall, this study presents a simple and effective strategy for preparing electrically conducive monoliths capable of fast and efficient Joule heating, offering potential for scalable, energy-efficient separation technologies.

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导电性沸石/碳纳米管蜂窝单块体增强电振荡吸附

变温吸附过程的电气化是与未来能源模式保持一致的必要条件。焦耳加热已被确定为吸附床饱和后再生的可行方法。在这项工作中，我们报道了一种新型复合单体的制造，具有增强的电性能，用于电振荡吸附（ESA）应用。除了沸石吸附剂（ZSM-5或13X）和粘合剂外，还添加了不同数量的多壁碳纳米管来调节复合材料的导电性。从吸附性能、电导率和焦耳加热性能等方面对其进行了表征。利用合成烟气（CO2/N2 15:85 v/v）和1-丁醇蒸汽，对最有前途的材料进行了基于esa的突破性实验。这些测试证明了这些复合材料在基于esa的分离过程中的一般适用性，实现了快速加热（1分钟内）至235℃的温度。总的来说，这项研究提出了一种简单有效的策略来制备能够快速有效地加热焦耳的有利于电的单体，为可扩展的、节能的分离技术提供了潜力。

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.