{"title":"Optimizing the Microenvironment of Pores in an MOF for Boosting Ethylene Purification from a Ternary-Component Mixture","authors":"Peng-Dan Zhang, Xue-Qian Wu, Qi Shuai, Jiamei Yu, Xin Zhang, Jian-Rong Li","doi":"10.1021/acsmaterialslett.4c01406","DOIUrl":null,"url":null,"abstract":"Designing an adsorbent that can simultaneously trap acetylene (C<sub>2</sub>H<sub>2</sub>) and ethane (C<sub>2</sub>H<sub>6</sub>) impurities for the one-step purification of ethylene (C<sub>2</sub>H<sub>4</sub>) remains a challenge. Herein, we constructed a novel Cu-based metal–organic framework (MOF), BUT-321, which exhibits the selective adsorption of C<sub>2</sub>H<sub>2</sub> and C<sub>2</sub>H<sub>6</sub> over C<sub>2</sub>H<sub>4</sub>. It was found that the high density of oxygen binding sites within the pore channels of BUT-321 can build an optimal environment for stronger interactions with C<sub>2</sub>H<sub>6</sub>, compared to the isostructural MOF BUT-320. Column breakthrough experiments confirm the exceptional C<sub>2</sub>H<sub>4</sub> separation performance of BUT-321 from both binary (1:1 for C<sub>2</sub>H<sub>2</sub>/C<sub>2</sub>H<sub>4</sub> or C<sub>2</sub>H<sub>6</sub>/C<sub>2</sub>H<sub>4</sub>) and ternary (1:1:1 for C<sub>2</sub>H<sub>2</sub>/C<sub>2</sub>H<sub>4</sub>/C<sub>2</sub>H<sub>6</sub>) gas mixtures in a single step. In addition, BUT-321 exhibits good chemical stability in water and an alkaline solution, combined with its synthesis scalability, economic viability, and recyclability, thus facilitating the application for the one-step C<sub>2</sub>H<sub>4</sub> purification.","PeriodicalId":19,"journal":{"name":"ACS Materials Letters","volume":null,"pages":null},"PeriodicalIF":9.6000,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Materials Letters","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acsmaterialslett.4c01406","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Designing an adsorbent that can simultaneously trap acetylene (C2H2) and ethane (C2H6) impurities for the one-step purification of ethylene (C2H4) remains a challenge. Herein, we constructed a novel Cu-based metal–organic framework (MOF), BUT-321, which exhibits the selective adsorption of C2H2 and C2H6 over C2H4. It was found that the high density of oxygen binding sites within the pore channels of BUT-321 can build an optimal environment for stronger interactions with C2H6, compared to the isostructural MOF BUT-320. Column breakthrough experiments confirm the exceptional C2H4 separation performance of BUT-321 from both binary (1:1 for C2H2/C2H4 or C2H6/C2H4) and ternary (1:1:1 for C2H2/C2H4/C2H6) gas mixtures in a single step. In addition, BUT-321 exhibits good chemical stability in water and an alkaline solution, combined with its synthesis scalability, economic viability, and recyclability, thus facilitating the application for the one-step C2H4 purification.
期刊介绍:
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.