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Gang SQ, Liu ZY, Wu SX, Yang S, Wang R, Du JL. A stable Zr(IV)-MOF for efficient removal of trace SO 2 from flue gas in dry and humid conditions. JOURNAL OF HAZARDOUS MATERIALS 2024; 470:134180. [PMID: 38569342 DOI: 10.1016/j.jhazmat.2024.134180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 03/24/2024] [Accepted: 03/30/2024] [Indexed: 04/05/2024]
Abstract
Obtaining suitable adsorbents for selective separation of SO2 from flue gas still remains an important issue. A stable Zr(IV)-MOF (Zr-PTBA) can be conveniently synthesized through the self-assembly of a tetracarboxylic acid ligand (H4L = 4,4',4'',4'''-(1,4-phenylenebis(azanetriyl))tetrabenzoic acid) and ZrCl4 in the presence of trace water. It exhibits a three-dimensional porous structure. The BET surface area is 1112.72 m2/g and the average pore size distribution focus on 5.9, 8.0 and 9.3 Å. Interestingly, Zr-PTBA shows selective adsorption of SO2. The maximum uptake reaches 223.21 cm3/g at ambient condition. While it exhibits lower adsorption uptake of CO2 (30.50 cm3/g) and hardly adsorbs O2 (2.57 cm3/g) and N2 (1.31 cm3/g). Higher IAST selectivities of SO2/CO2 (21.9), SO2/N2 (912.7), SO2/O2 (2269.9) and SO2/CH4 (85.0) have been obtained, which reveal its' excellent gas separation performance. Breakthrough experiment further confirms its application for flue gas deep desulfurization both in dry and humid conditions. Furthermore, the gas adsorption results and mechanisms have also been studied by theoretical calculations.
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Affiliation(s)
- Shu-Qi Gang
- State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province (No. 22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Zi-Yue Liu
- State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province (No. 22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Su-Xia Wu
- Hebei Normal University of Science and Technology, Qinhuangdao 066600, China
| | - Shu Yang
- State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province (No. 22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Ruihan Wang
- Hebei Normal University of Science and Technology, Qinhuangdao 066600, China.
| | - Jian-Long Du
- State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province (No. 22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China.
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Chen S, Huang S, Yang Z, Suo X, Xing H, Cui X. Precise Construction of Nitrogen-Enriched Porous Ionic Polymers as Highly Efficient Sulfur Dioxide Adsorbent. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400746. [PMID: 38678492 DOI: 10.1002/smll.202400746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/01/2024] [Indexed: 05/01/2024]
Abstract
Porous ionic polymers with unique features have exhibited high performance in various applications. However, the fabrication of functional porous ionic polymers with custom functionality and porosity for efficient removal of low-concentration SO2 remains challenging. Herein, a novel nitrogen-enriched porous ionic polymer NH2Py-PIP is prepared featuring high-content nitrogen sites (15.9 wt.%), adequate ionic sites (1.22 mmol g-1), and a hierarchical porous structure. The proposed construction pathway relies on a tailored nitrogen-functionalized cross-linker NH2Py, which effectively introduces abundant functional sites and improves the porosity of porous ionic polymers. NH2Py-PIP with a well-engineered SO2-affinity environment achieves excellent SO2/CO2 selectivity (1165) and high SO2 adsorption capacity (1.13 mmol g-1 at 0.002 bar), as well as enables highly efficient and reversible dynamic separation performance. Modeling studies further elucidate that the nitrogen sites and bromide anions collaboratively promote preferential adsorption of SO2. The unique design in this work provides new insights into constructing functional porous ionic polymers for high-efficiency separations.
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Affiliation(s)
- Sen Chen
- Engineering Research Center of Functional Materials Intelligent Manufacturing of Zhejiang Province, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310012, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
| | - Shicheng Huang
- Engineering Research Center of Functional Materials Intelligent Manufacturing of Zhejiang Province, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310012, China
| | - Zhenglu Yang
- Engineering Research Center of Functional Materials Intelligent Manufacturing of Zhejiang Province, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310012, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
| | - Xian Suo
- Engineering Research Center of Functional Materials Intelligent Manufacturing of Zhejiang Province, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310012, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
| | - Huabin Xing
- Engineering Research Center of Functional Materials Intelligent Manufacturing of Zhejiang Province, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310012, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
| | - Xili Cui
- Engineering Research Center of Functional Materials Intelligent Manufacturing of Zhejiang Province, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310012, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
- Shanxi-Zheda Institute of Advanced Materials, Chemical Engineering, Hangzhou, 310027, China
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Tian J, Ding X, Wang Q, Yang Y, Ma S, Hou Y, Huang Z, Liu L. Spontaneous Formation of Nitrogen - Doped Hierarchical Porous Microcrystalline Nanosheets with Improved CO2 Capture at Low and Medium Pressures. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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