{"title":"Green and Scalable Preparation of an Isomeric CALF-20 Adsorbent with Tailored Pore Size for Molecular Sieving of Propylene from Propane.","authors":"Zhenning Deng, Longsheng Yang, Hanting Xiong, Junhui Liu, Xing Liu, Zhenyu Zhou, Shixia Chen, Yanan Wang, Hao Wang, Jingwen Chen, Shuguang Deng, Banglin Chen, Jun Wang","doi":"10.1002/smtd.202400838","DOIUrl":null,"url":null,"abstract":"<p><p>Molecular sieving of propylene (C<sub>3</sub>H<sub>6</sub>) from propane (C<sub>3</sub>H<sub>8</sub>) is highly demanded for C<sub>3</sub>H<sub>6</sub> purification. However, delicate control over aperture size to achieve both high C<sub>3</sub>H<sub>6</sub> uptake and C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> selectivity with low cost remains a significant challenge. Herein, a green and scalable approach is reported for preparing an isomeric CALF-20 adsorbent, termed as NCU-20, using water as the only solvent with a cost of $10 per kilogram. NCU-20 features a contracted pore size (4.2 × 4.7 Å<sup>2</sup>) compared to CALF-20 (5.2 × 5.7 Å<sup>2</sup>), which enables molecular sieving of C<sub>3</sub>H<sub>6</sub> (4.16 × 4.65 Å<sup>2</sup>) from C<sub>3</sub>H<sub>8</sub> (4.20 × 4.80 Å<sup>2</sup>). Notably, NCU-20 exhibits record-high C<sub>3</sub>H<sub>6</sub> adsorption capacity (94.41 cm<sup>3</sup> cm<sup>-3</sup>) at 298 K and 1.0 bar, outperforming all C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> molecular sieving adsorbents. The sieving performances of C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> are well maintained at elevated temperatures. Therefore, a delicate balance between C<sub>3</sub>H<sub>6</sub> adsorption capacity (91.62 cm<sup>3</sup> cm<sup>-3</sup>) and C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> selectivity (uptake ratio of 22.2) is obtained on NCU-20 at 298 K and 0.5 bar. Furthermore, dynamic breakthrough experiments demonstrate a high productivity of 65.39 cm<sup>3</sup> cm<sup>-3</sup> for high-purity C<sub>3</sub>H<sub>6</sub> (>99.5%) from an equimolar C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> gas-mixture.</p>","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400838"},"PeriodicalIF":10.7000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Small Methods","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/smtd.202400838","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/7/29 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Molecular sieving of propylene (C3H6) from propane (C3H8) is highly demanded for C3H6 purification. However, delicate control over aperture size to achieve both high C3H6 uptake and C3H6/C3H8 selectivity with low cost remains a significant challenge. Herein, a green and scalable approach is reported for preparing an isomeric CALF-20 adsorbent, termed as NCU-20, using water as the only solvent with a cost of $10 per kilogram. NCU-20 features a contracted pore size (4.2 × 4.7 Å2) compared to CALF-20 (5.2 × 5.7 Å2), which enables molecular sieving of C3H6 (4.16 × 4.65 Å2) from C3H8 (4.20 × 4.80 Å2). Notably, NCU-20 exhibits record-high C3H6 adsorption capacity (94.41 cm3 cm-3) at 298 K and 1.0 bar, outperforming all C3H6/C3H8 molecular sieving adsorbents. The sieving performances of C3H6/C3H8 are well maintained at elevated temperatures. Therefore, a delicate balance between C3H6 adsorption capacity (91.62 cm3 cm-3) and C3H6/C3H8 selectivity (uptake ratio of 22.2) is obtained on NCU-20 at 298 K and 0.5 bar. Furthermore, dynamic breakthrough experiments demonstrate a high productivity of 65.39 cm3 cm-3 for high-purity C3H6 (>99.5%) from an equimolar C3H6/C3H8 gas-mixture.
Small MethodsMaterials Science-General Materials Science
CiteScore
17.40
自引率
1.60%
发文量
347
期刊介绍:
Small Methods is a multidisciplinary journal that publishes groundbreaking research on methods relevant to nano- and microscale research. It welcomes contributions from the fields of materials science, biomedical science, chemistry, and physics, showcasing the latest advancements in experimental techniques.
With a notable 2022 Impact Factor of 12.4 (Journal Citation Reports, Clarivate Analytics, 2023), Small Methods is recognized for its significant impact on the scientific community.
The online ISSN for Small Methods is 2366-9608.