The template-free synthesis of zeolite NaY for CO2 capture

doi:10.1016/j.cjche.2025.06.003

中国化学工程学报 ›› 2025, Vol. 87 ›› Issue (11): 45-57.DOI: 10.1016/j.cjche.2025.06.003

The template-free synthesis of zeolite NaY for CO₂ capture

Fu Rao^1,2, Wenkang Deng², Chenghao Liu², Xiaofeng Xie², Chunfa Liao¹, Tao Qi², Guoping Hu²

1. Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2. Key Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China

收稿日期:2025-02-17 修回日期:2025-06-03 接受日期:2025-06-04 出版日期:2025-11-28 发布日期:2025-06-16
通讯作者: Xiaofeng Xie,E-mail:xfxie@gia.cas.cn;Guoping Hu,E-mail:gphu@gia.cas.cn
基金资助:
During the preparation of this work the author used ChatGPT (OpenAl) in order to enhance linguistic precision through grammar refinement and academic terminology alignment. After using this tool, the author reviewed and edited the content as needed and takes full responsibility for the content of the publication.

The template-free synthesis of zeolite NaY for CO₂ capture

Fu Rao^1,2, Wenkang Deng², Chenghao Liu², Xiaofeng Xie², Chunfa Liao¹, Tao Qi², Guoping Hu²

1. Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2. Key Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China

Received:2025-02-17 Revised:2025-06-03 Accepted:2025-06-04 Online:2025-11-28 Published:2025-06-16
Contact: Xiaofeng Xie,E-mail:xfxie@gia.cas.cn;Guoping Hu,E-mail:gphu@gia.cas.cn
Supported by:
During the preparation of this work the author used ChatGPT (OpenAl) in order to enhance linguistic precision through grammar refinement and academic terminology alignment. After using this tool, the author reviewed and edited the content as needed and takes full responsibility for the content of the publication.

摘要/Abstract

摘要： Sodium Y (NaY) zeolite is a promising adsorbent for carbon capture. The template-free synthesis of NaY zeolite has gained considerable interests to minimize its costs and environmental effects. However, NaY zeolites synthesized through template-free methods exhibited lower CO₂ adsorption capacities (～4.07 mmol·g^-1) compared to template-assisted counterparts, often requiring longer crystallization time and higher energy penalty. This study systematically compared the microstructural characteristics and CO₂ adsorption performance of NaY zeolites synthesized with and without templates, including those from the commercial markets. Through process optimization, the CO₂ adsorption capacity of the template-free NaY zeolite was significantly enhanced, surpassing those template-assisted samples. Notably, it achieved CO₂ adsorption capacities of 6.51 mmol·g^-1 at 25 °C and 0.1 MPa, and 7.40 mmol·g^-1 at 0 °C and 0.1 MPa, outperforming both commercial NaY and template-assisted samples. The structural differences, including crystal integrity, pore size distribution and surface properties, were systematically discussed. The optimized synthesis method increased the specific surface area and the ratio of microporous structures. The template-free NaY also showed superior CO₂ capture capacity, moisture resistance, breakthrough performance and stability, indicating its application potential for carbon capture.

关键词: CO₂ capture, NaY zeolite, Template-free, Adsorption

Abstract: Sodium Y (NaY) zeolite is a promising adsorbent for carbon capture. The template-free synthesis of NaY zeolite has gained considerable interests to minimize its costs and environmental effects. However, NaY zeolites synthesized through template-free methods exhibited lower CO₂ adsorption capacities (～4.07 mmol·g^-1) compared to template-assisted counterparts, often requiring longer crystallization time and higher energy penalty. This study systematically compared the microstructural characteristics and CO₂ adsorption performance of NaY zeolites synthesized with and without templates, including those from the commercial markets. Through process optimization, the CO₂ adsorption capacity of the template-free NaY zeolite was significantly enhanced, surpassing those template-assisted samples. Notably, it achieved CO₂ adsorption capacities of 6.51 mmol·g^-1 at 25 °C and 0.1 MPa, and 7.40 mmol·g^-1 at 0 °C and 0.1 MPa, outperforming both commercial NaY and template-assisted samples. The structural differences, including crystal integrity, pore size distribution and surface properties, were systematically discussed. The optimized synthesis method increased the specific surface area and the ratio of microporous structures. The template-free NaY also showed superior CO₂ capture capacity, moisture resistance, breakthrough performance and stability, indicating its application potential for carbon capture.

Key words: CO₂ capture, NaY zeolite, Template-free, Adsorption

Fu Rao, Wenkang Deng, Chenghao Liu, Xiaofeng Xie, Chunfa Liao, Tao Qi, Guoping Hu. The template-free synthesis of zeolite NaY for CO₂ capture[J]. 中国化学工程学报, 2025, 87(11): 45-57.

Fu Rao, Wenkang Deng, Chenghao Liu, Xiaofeng Xie, Chunfa Liao, Tao Qi, Guoping Hu. The template-free synthesis of zeolite NaY for CO₂ capture[J]. Chinese Journal of Chemical Engineering, 2025, 87(11): 45-57.

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The template-free synthesis of zeolite NaY for CO₂ capture

The template-free synthesis of zeolite NaY for CO₂ capture

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