JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·Vol. 141
·期 16
·e55253
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IF 2.7
Xiaocan Zhang,Siqin Zeng,Jiashu Long,Xuesong Li,Yutong Zhao
Using porous materials to selectively adsorb H 2 O from natural gas is a promising method to dehydrate methane (CH 4 ). The structure of a Zirconium metal-organic framework (Zr-MOF), namely, MIP-202, features a high density of amino groups, which can produce strong hydrogen bonding with H 2 O molecules. MIP-202 is cost-effective, green and scalable, and it exhibits good chemical stability under various conditions. This work incorporated MIP-202 nanoparticles into the high permeability polymer polyetherimide (PEI), and the obtained Mixed Matrix Membranes (MMMs) was used for the gas separation of H 2 O/CH 4 . It is found that MMMs loaded with 20 wt% of MIP-202 demonstrated a high H 2 O/CH 4 selectivity of 832.2, which was about 760 times of that of the pure PEI. This approach offers a new route to fabricate functional membranes for energy-efficient gas separations.
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Jing Li,Zhiyong Yao,Xiaomei Liu,Cailing Yang,Pengbo Liu,Panpan Liu,Weiqiang Wang,Haonian Guo,Guoying Huang,Xinlu Jin,Ziqiang Lei
Atmospheric water harvesting (AWH) emerges as a promising technology to address the challenge of water scarcity by efficiently harnessing the abundant water present in the atmosphere. This study focuses on enhancing the performance of zirconium-based metal-organic frameworks (MOFs), particularly MIP-202, which is recognised for its facile synthesis and eco-friendly characteristics. Through post-synthesis modifications, MIP-202 was tailored for application as a cross-linking agent in the fabrication of hygroscopic polymer material (MPA) via free radical polymerisation alongside acrylic acid radicals. Our investigation centers on assessing the atmospheric water harvesting (AWH) capacity of MPA across varying humidity levels and its efficacy in liquid water storage. Experimental findings demonstrate MPA's broad adsorption spectrum, from 30% to 90% relative humidity, with adsorption capacities ranging from 44.6 mg/g to 1372.4 mg/g. At a solar intensity of 1 kW/m 2 (equivalent to 1 sun), the desorption rate reaches 0.39 kg/m 2 /h. Following ten cycles of adsorption-desorption experiments, MPA maintains a stable adsorption capacity of 824 mg/g, retaining 95.7% of the initial adsorption capacity. The straightforward synthesis process of MPA, coupled with its enhanced water vapour trapping capability and consistent cyclic stability, positions it favourably as a promising material for atmospheric water harvesting applications.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Daofei Lv,JiaYu Chen,Kexin Yang,Houxiao Wu,Yongwei Chen,Chongxiong Duan,Ying Wu,Jing Xiao,Hongxia Xi,Zhong Li,Qibin Xia
Using porous materials to selectively adsorb CO 2 from flue gas or natural gas is a promising method for mitigating CO 2 emission and purifying methane. Here, we synthesized an L-aspartic acid based microporous metal-organic framework (MIP-202) and studied its adsorptive separation performance for CO 2 /CH 4 and CO 2 /N 2 mixtures. Results show that MIP-202 had ultrahigh CO 2 /CH 4 (72.9 and 241.5 for CO 2 /CH 4 = 50/50 and 10/90, respectively) and CO 2 /N 2 (1,950,000 and 2129.1 for CO 2 /N 2 = 50/50 and 15/85, respectively) IAST selectivities at 298 K and 100 kPa. The high selectivity was verified by the calculations of Henery’s law selectivity and breakthrough experiments. Metropolis Monte Carlo simulation calculations show that CO 2 with greater polarizability and quadruple moment tends to occupy the pore walls of large cages with higher polarity, while the less polar CH 4 or N 2 majorly being adsorbed in the pore walls of small cages with lower polarity, resulting in the ultrahigh CO 2 /CH 4 and CO 2 /N 2 separation selectivities. MIP-202 exhibits low CO 2 adsorption enthalpy (17.2–30.7 kJ/mol), superior persistent reusability after five cyclic adsorption experiments, easy desorption performance at 298 K, moderate water and moisture stability, good stability under dry and humid SO 2 atmosphere, and low ligand cost ($36/kg). MIP-202 extrudates were prepared by an extrusion molding method using hydroxypropyl cellulose (HPC) as the binder and they retained 97.35% CO 2 uptake of MIP-202 powder at room temperature and pressure. This work shows that MIP-202 is an industrially promising material for the separation of CO 2 /CH 4 and CO 2 /N 2 mixtures.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yingying Wang,Fuyu Zhang,Mengshuo Du,Bihe Chen,Yifeng Xu,Wenzhi Tang,Zhonghong Li
Highly toxic Pb(Ⅱ) and Cd(Ⅱ) persist in water and soil, disrupting ecosystems while threatening human health through bioaccumulation. Metal-organic frameworks (MOFs) as adsorbents toward heavy metal ions have garnered significant research attention. However, their adsorption capacity and retrieval are limited by small pore size and powder form. Herein, we designed a defective MIP-202 composite aerogel (DMCA) to efficiently remove Pb(Ⅱ) and Cd(Ⅱ). Mixed ligand (mercaptosuccinic acid) and modulator (butyric acid) were involved in the synthesis of MIP-202, and competed with the original amino acid ligand for binding to Zr clusters leading to the disruption of the original structure of MIP-202 and defect formation. Defective MIP-202 (D-MIP-202) possessed larger BET surface area (from 35.79 to 129.57 m 2 /g) and pore size (from 6.16 to 11.78 nm). Moreover, D-MIP-202 powder and sodium alginate were synthesized into DMCA with abundant adsorption sites and porous structures to enhance the sorption capacities, which were 434.7 mg/g (Pb(II)) and 202.6 mg/g (Cd(II)). The adsorption process primarily occurs on the heterogeneous surface of the material and represents a spontaneous chemisorption behavior. The adsorption mechanism is attributed to chelation, and ion exchange. This study presents an effective strategy for the remediation of heavy metal ions in aqueous systems.
研究领域:
环境科学
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材料科学
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污染控制化学
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吸附分离
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功能材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2023
·Vol. 30
·期 6
·2129-2137
·
IF 2.6
Tao Ruyu,Liu Hao,Xiang Pan,Lin Yichao,Zhou Junjie,Zhou Chen,Zhao Yayun,Tian Ziqi,Zhang Qiuju
Nanoscale Zr-based metal-organic framework (MIP-202) particles were successfully prepared via a seeds-assisted hydrothermal secondary synthesis. The uniformly-shaped MIP-202 particles exhibit excellent performance on selective CO 2 adsorption from CO 2 /CH 4 and CO 2 /N 2 mixtures. At 298 K and 1 bar, the uptake ratios of CO 2 /CH 4 and CO 2 /N 2 of MIP-202 particles are as high as 32.6 and 65.2, respectively. The IAST (ideal adsorbed solution theory)-predicted selectivities of CO 2 /N 2 (50/50, v/v) and CO 2 /CH 4 (50/50, v/v) reach to 4.5 × 10 10 and 102.2, respectively. The breakthrough experiments further demonstrate that the CO 2 /CH 4 and CO 2 /N 2 mixtures can be efficiently separated through an adsorption column packed with MIP-202 particles. In addition, the as-prepared MIP-202 particles had a low iso-enthalpy of adsorption of CO 2 of 32.95 kJ/mol, which is favorable for the regeneration of the adsorbent. Herein the as-prepared MIP-202 is a potential material for efficient separation of CO 2 from CH 4 or N 2 through an energy- and cost-saving CO 2 capture process.
研究领域:
材料科学
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环境化学
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能源工程
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纳米技术
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DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2022
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IF 3.898
Daofei Lv,Junhao Xu,Pingjun Zhou,Shi Tu,Feng Xu,Jian Yan,Hongxia Xi,Zewei Liu,Wenbing Yuan,Qiang Fu,Xin Chen,Qibin Xia
The separation of propylene and propane is an important but challenging process, primarily achieved through energy-intensive distillation technology in the petrochemical industry. Here, we reported two natural C 4 linkers based metal–organic frameworks (MIP-202 and MIP-203) for C 3 H 6 /C 3 H 8 separation. Adsorption isotherms and selectivity calculations were performed to study the adsorption performance for C 3 H 6 /C 3 H 8 separation. Results show that C 3 H 6 /C 3 H 8 uptake ratios (298 K, 100 kPa) for MIP-202 and MIP-203 are 2.34 and 7.4, respectively. C 3 H 6 /C 3 H 8 uptake ratio (303 K, 100 kPa) for MIP-203 is up to 50.0. The mechanism for enhanced separation performance of C 3 H 6 /C 3 H 8 on MIP-203 at higher temperature (303 K) was revealed by the in situ PXRD characterization. The adsorption selectivities of C 3 H 6 /C 3 H 8 on MIP-202 and MIP-203 (298 K, 100 kPa) are 8.8 and 551.4, respectively. The mechanism for the preferential adsorption of C 3 H 6 over C 3 H 8 in MIP-202 and MIP-203 was revealed by the Monte Carlo simulation. The cost of organic ligands for MIP-202 and MIP-203 was lower than that of organic ligands for those top-performance MOFs. Our work sets a new benchmark for C 3 H 6 sorbents with high adsorption selectivities.
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
DOI
高影响因子
危险品化学品经营许可证（带存储）