CRYSTENGCOMM
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2019
·Vol. 22
·期 2
·275-282
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IF 3.382
Peng Yan,Jucai Yang,Xiangying Hao,Zhisheng Chen,Guanhua Shen,Yanhua Zhao,Deyun Ma,Jiaxin Zhu
A new Zn-based metal–organic framework with 8-connected hex topology constructed from bipyridine and carboxylate ligands, namely [Zn(cpna)3(tmbpy)]n·4DMF (1) (H2cpna = 6-(4-carboxyphenyl)nicotinic acid; tmbpy = 3,3′-dimethyl-4,4′-bipyridine), has been synthesized under solvothermal conditions. The Zn-MOF was structurally characterized and retained a good crystal structure after activation (1a), an indication of permanent porosity. 1a exhibits a BET surface of 770 m2 g−1 and the maximum aperture of 8.60 Å. Single component adsorption isotherm measurements of C2H2, CO2, CH4, CO and N2 on 1a were performed both at 273 K and 298 K, and the selectivities for C2H2/CH4, C2H2/CO2, CO2/CO, CO2/CH4 and CO2/N2 were estimated on the basis of the ideal adsorbed solution theory (IAST). 1a shows the uptake of C2H2 (3.89 mmol g−1) and CO2 (3.52 mmol g−1) at 273 K and 100 kPa, respectively. Due to the Lewis basic pyridyl sites inside the channel of the framework, 1a showed good adsorption selectivities for C2H2/CH4(50 : 50) and C2H2/CO2(50 : 50) at 298 K (100 kPa).
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2019
·
IF 4.182
Peng Yan,Jucai Yang,Deyun Ma,Siyun Zhang,Shigong Zeng,Liting Feng,Sihui Zhan,Qiaquan Lin
A water-stable porous cobalt(II)–organic framework functionalized by ethoxyl groups with a chemical formula, {[Co 6 (5-EIA) 5 (tmbpy)(OH) 2 (H 2 O) 2 ]∙4(H 2 O)} n ( 1 ) (5-H 2 EIA = 5-ethoxy-isophthalic acid; tmbpy = 3,3′-dimethyl-4,4′-bipyridine) has been constructed and studied in terms of structure and performance. 1 shows a 3D framework, and has a 1D channel of 8.1 × 6.0 Å 2 along the a axis. The framework 1 exhibits high humid and thermal stability according to PXRD and TGA results. The C 2 H 2 and CO 2 uptakes of the activated 1 ( 1a ) were up to 2.07 mmol g −1 and 1.89 mmol g −1 at 273 K (100 kPa), respectively. More importantly, 1a shows excellent C 2 H 2 /CH 4 (1:1) and CO 2 /CH 4 (1:1) separations with IAST selectivity of 23.7 and 11.4 at 298 K (100 kPa), respectively. Furthermore, 1a showed good reuse performance, suggesting that 1a could be applied to the separation of C 2 H 2 /CH 4 or CO 2 /CH 4 .
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2021
·
IF 3.171
Xionghui Liu,Jianfeng Du,Yu Ye,Yuchuan Liu,Shun Wang,Xianyu Meng,Xiaowei Song,Zhiqiang Liang,Wenfu Yan
Nitrogen-rich porous organic polymers have shown great potentials in gas adsorption/separation, photocatalysis , electrochemistry, sensing and so on. Herein, 1,2,3-triazole functionalized triazine-based porous organic polymers (TT-POPs) have been synthesized by the copper-catalyzed azide-alkyne cycloaddition (Cu-AAC) polymerization reactions of 1,3,5-tris(4-azidophenyl)-triazine with 1,4-diacetylene benzene and 1,3,5-triacetylenebenzene, respectively. The characterizations of N 2 adsorption at 77 K show TT-POPs possess permanent porosity with BET surface areas of 666 m 2 ·g −1 (TT-POP-1) and 406 m 2 ·g −1 (TT-POP-2). The adsorption capacities of TT-POPs for CO 2 , CH 4 , C 2 H 2 and C 2 H 4 , as well as the selective separation abilities of CO 2 /N 2 , CO 2 /CH 4 , C 2 H 2 /CH 4 and C 2 H 4 /CH 4 were evaluated. The gas selective separation ratio of TT-POPs was calculated by the ideal adsorbed solution theory (IAST) method, wherein the selective separation ratios of C 2 H 2 /CH 4 and C 2 H 4 /CH 4 of TT-POP-2 was 48.4 and 13.6 (298 K, 0.1 MPa), which is comparable to other adsorbents (5.6–120.6 for C 2 H 2 /CH 4 , 10–26 for C 2 H 4 /CH 4 ). This work shows that the 1,2,3-triazole functionalized triazine-based porous organic polymer has a good application prospect in natural gas purification.
研究领域:
材料科学
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化学工程
·
环境科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Yan Zhang,Xiaoyu Deng,Xinran Li,Xing Liu,Peixin Zhang,Lihua Chen,Zhihong Yan,Jun Wang,Shuguang Deng
Highly selective separation of acetylene from various other gases (e.g., carbon dioxide and methane) is of great importance in the petrochemical industry but remains a challenge due to their similar sizes and physical properties. Herein, we reported a microporous metal − organic framework Zn 4 O(NTB) 2 (H 3 NTB = 4,4′,4″-nitrilotribenzoicacid acid), features oxygen binding sites explored for C 2 H 2 capture and separation. A high C 2 H 2 uptake of 2.62 mmol g −1 combined with excellent selectivity of C 2 H 2 /CO 2 (4.8) and C 2 H 2 /CH 4 (21.6) under ambient conditions (i.e., 50:50 mixture at 298 K and 1 bar) was realized. Moreover, the grand canonical Monte Carlo (GCMC) simulations and first-principles density functional theory (DFT) calculations have identified that the high C 2 H 2 capture and selectivity ascribe to oxygen sites on the pores (C–H…O interaction). Dynamic breakthrough experiments comprehensively demonstrate that Zn 4 O(NTB) 2 is a promising adsorbent for practical C 2 H 2 /CO 2 and C 2 H 2 /CH 4 separation.
研究领域:
化学工程
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材料科学
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石油化工
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）