CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Yuxiu Sun,Qianqian Yu,Chenxu Geng,Gui-Rong Zhang,Zhengqing Zhang,Zhihua Qiao,Chongli Zhong
Membrane technology based on ethane-selective permeation materials is highly imperative for energy-efficient separating C 2 H 6 and C 2 H 4 mixture. Herein, we rationally constructed a fluorinated metal–organic framework based mixed matrix membrane (MMM), which can selectively permeate ethane from a C 2 H 6 /C 2 H 4 mixture. The unique structure of MOF-808 allows functionalization of fluorinated carboxylic acid (FCA) in the MOF framework to construct various fluorinated MOFs via a facile post-synthetic strategy. As a proof of concept, four FCAs with different fluorocarbon chain lengths, including trifluoroacetic acid (TFA), pentafluoropropionic acid (PFPA), heptafluorobutyric acid (HFBA), and perfluorovaleric acid (PFVA), were used to create fluorinated MOFs and corresponding MMMs. The typical HFBA-MOF/PIM-1 hybrid membrane exhibits a high C 2 H 6 /C 2 H 4 selectivity of about 2.3 with C 2 H 6 permeability of 4246 Barrer at 253 K and 6 bar. Computational simulations confirm that the reversed permeation behavior is attributed to the strong affinity of C 2 H 6 within the fluorinated pore environment, mediated by multiple hydrogen bonds.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
CARBON
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2021
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IF 9.594
Yuchen Xiao,Huajun Yang,Xianhui Bu,Pingyun Feng
We report a family of carbon materials (denoted SFZ8C) prepared from templated carbonization of zeolitic imidazolate framework-8 (ZIF-8) in NaCl–ZnCl 2 eutectic salt. The hard-templating effect of the salt is utilized to sustain the framework and maximize the porosity during carbonization. In addition to rich surface nitrogen and oxygen species, SFZ8Cs have large specific surface area. These combined features give rise to excellent adsorption properties for light hydrocarbon gases. SFZ8Cs have both C 2 H 2 /CO 2 selective and C 3 /C 2 selective adsorption, as well as the ability to selectively remove impurities from methane. Particularly noteworthy is the excellent C 3 /C 2 selective adsorption performance by SFZ8C-900. Its propane/ethane selectivity (7.68) is on par with the best value (7.72) reported so far, yet SFZ8C-900 excels in propane uptake capacity. The multifunctional properties together with the ease for the mass production make SFZ8Cs promising for a number of important applications.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
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2021
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IF 3.712
Baohua Liu,Liang Yan,Huahua Zhao,Jian Yang,Jun Zhao,Huanling Song,Lingjun Chou
The effect of Ce on the structure of MoVNbCeO multi-metal oxide catalysts and the performance of ethane selective oxidation was investigated. These multi-metal oxide catalysts with superior oxidizability exhibit high catalytic activity, and vanadium acts as the active center for ethane oxidation reaction . The improved catalytic activity is related to the increased V 5+ content on the catalyst surface, which results from the enhanced transformation of the electrons between V and Ce. Moreover, Ce effectively promotes oxygen adsorption, activation, and mobility. And the presence of Ce can also prevent MoO 3 formation and stabilize the Mo 5 O 14 -like structure. In addition, the catalyst with a moderate amount of Ce exhibits outstanding catalytic performance. Especially, the MVN-Ce catalyst with a Ce/V ratio of 0.1 exhibits the best performance: the total selectivity of the catalyst toward C 2 H 4 and CH 3 COOH is the highest (72%) at the ethane conversion of 31%. Therefore, MoVNbCeO multi-metal oxides are promising candidates for selective oxidation.
研究领域:
催化化学
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材料科学
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DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2021
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IF 5.455
Chaohui He,Yong Wang,Yang Chen,Xiaoqing Wang,Jiangfeng Yang,Libo Li,Jinping Li
The development of ethane (C 2 H 6 )-selective adsorbents displaying high uptake and selectivity to purify ethylene (C 2 H 4 ) to obtain polymer-grade raw materials is a meaningful, but challenging process. Tailoring the pore chemistry of a metal-organic framework is an effective strategy used to construct high performance adsorbents. Herein, BUT-10 with a tailored pore environment for tuning the C 2 H 6 adsorption ability has been synthesized via introducing functional sites into UiO-67. The single component gas adsorption capacity, adsorption heat and adsorption selectivity of BUT-10 have been proven to be effectively increased after modifying the pore environment. Computational studies have revealed that the stronger adsorption affinity for C 2 H 6 was achieved via multiple adsorbate-framework interactions in the appropriate pore environment. Breakthrough experiments using BUT-10 as a C 2 H 6 -selective adsorbent have shown that polymer grade C 2 H 4 was directly produced from C 2 H 6 /C 2 H 4 (1/15 v/v) mixtures using a single separation process under ambient conditions.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
AICHE JOURNAL
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2019
·Vol. 65
·期 8
·e16616
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IF 3.463
Daofei Lv,Jiayu Chen,Yongwei Chen,Zewei Liu,Yuzhi Xu,Chongxiong Duan,Houxiao Wu,Ying Wu,Jing Xiao,Hongxia Xi,Zhong Li,Qibin Xia
Metal–organic frameworks (MOFs) combined with selective adsorption capacity of ethane over ethylene and good moisture stability are highly urged by adsorption industrial community. Here, the moisture stability mechanism of Zr-bptc, UiO-66, PCN-245, and Ni(bdc)(ted) 0.5 were investigated by moisture stability experiments, and computational simulation of metal node-linker breaking energy caused by water. Results show that the moisture stability follows the order of Zr-bptc > UiO-66 > PCN-245 > Ni(bdc)(ted) 0.5 . The different moisture stability for these MOFs is likely attributed to the bond strength between metal center and ligands, the coordination number of metal center, the hydrophobicity of framework, as well as the degree of interpenetrated framework. Additionally, comparing with ethylene-selective MOFs, ethane-selective MOFs have fewer coordinatively unsaturated metal sites. Breakthrough experiments indicated that Zr-bptc is the promising material for ethane/ethylene separation.
研究领域:
材料化学
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配位化学
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气体分离
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多孔材料
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工业吸附
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DOI
高影响因子
AICHE JOURNAL
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2025
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IF 4
Xiaoqing Wang,Ye Li,Xiaomin Li,Yong Wang,Feifei Zhang,Shishuai Li,Libo Li,Jinping Li,Jiangfeng Yang
Developing ethane (C 2 H 6 )-selective adsorbents is crucial for energy-efficient separation and the direct production of high-purity ethylene (C 2 H 4 ). While pure-silica zeolites show promise, their limited selectivity necessitates the exploration of alternative materials. Herein, we present AlPO 4 -17, an electrically neutral aluminum phosphate (AlPO) zeolite and isostructural analog of pure-silica zeolites. Featuring ultra-microporous structures and low-polarity surfaces, AlPO 4 -17 exhibits denser and stronger C−H···O interactions with C 2 H 6 than with C 2 H 4 . This results in the highest experimentally confirmed C 2 H 6 /C 2 H 4 selectivity (2.27) and C 2 H 6 adsorption heat (36.05 kJ/mol) among all reported C 2 H 6 -selective zeolites. Breakthrough experiments validate its superior C 2 H 6 /C 2 H 4 separation performance. Vacuum pressure swing adsorption (PSA) experiments demonstrate its practical efficiency under real-world conditions, while PSA simulations highlight its potential for enhanced recovery. As the first AlPO zeolite developed for C 2 H 6 /C 2 H 4 separation, AlPO 4 -17 offers valuable insights into the design of advanced C 2 H 6 -selective adsorbents, paving the way for more efficient industrial C 2 H 4 purification processes.
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DOI
高影响因子
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