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< Page ,Total 34 >
A 3D ultramicroporous porous organic frameworks for SO2 and aromatic sulfides capture with high capacity and selectivity EI
期刊论文 | 2022 , 429 | Chemical Engineering Journal
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Abstract :

The governance of sulfur dioxide emissions in the atmosphere is a global challenge. Herein, a three-dimensional ultramicroporous porous organic framework named TAM-POF with high surface areas, abundant accessible N sites and suitable pore size was synthesized for elimination of SO2 in flue gases and aromatic sulfides in liquid fuels. The adsorption and separation performance of TAM-POF is investigated by equilibrium gas adsorption, instant adsorption rates and column breakthrough experiments. A record-high SO2 dynamic adsorption capacity of 2.92 mmol g−1 in ternary gas mixture (0.5/10/89.5, v/v/v, SO2/CO2/N2) and SO2/CO2 (1 2 4) and 3-methylthiophene/n-octane (42) selectivities were achieved in TAM-POF. The strong interaction between adsorbents and TAM-POF, as well as appropriate pore apertures are the main reason for their excellent desulfurization performance, which are also evidenced by theory simulation. © 2021 Elsevier B.V.

Keyword :

Gas adsorption Aromatization Pore size Sulfur dioxide Aromatic compounds

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GB/T 7714 Chen, Shuhui , Wu, Yue , Zhang, Wenxiang et al. A 3D ultramicroporous porous organic frameworks for SO2 and aromatic sulfides capture with high capacity and selectivity [J]. | Chemical Engineering Journal , 2022 , 429 .
MLA Chen, Shuhui et al. "A 3D ultramicroporous porous organic frameworks for SO2 and aromatic sulfides capture with high capacity and selectivity" . | Chemical Engineering Journal 429 (2022) .
APA Chen, Shuhui , Wu, Yue , Zhang, Wenxiang , Wang, Shanshan , Yan, Tong , He, Songjie et al. A 3D ultramicroporous porous organic frameworks for SO2 and aromatic sulfides capture with high capacity and selectivity . | Chemical Engineering Journal , 2022 , 429 .
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Tuning the alloy degree for Pd-M/Al2O3 (M=Co/ Ni /Cu) bimetallic catalysts to enhance the activity and selectivity of dodecahydro-N-ethylcarbazole dehydrogenation EI SCIE
期刊论文 | 2021 , 46 (68) , 33835-33848 | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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Abstract :

Hydrogen is a promising candidate to substitute the fossil fuels. However, the efficient hydrogen storage technologies restrict the commercial applications. Developing new cat-alysts with high activity and selectivity is important for the dehydrogenation reaction in N-ethylcarbazole/dodecahydro-N-ethylcarbazole (NECZ/12H-NECZ) hydrogen storage sys-tem. In this work, a series of Pd-M/Al2O3 (M = Co, Ni and Cu) bimetallic catalysts are synthesized successfully and show good performance in the dehydrogenation reaction of 12H-NECZ than the commercial Pd/Al2O3 catalyst. The Pd1Co1/Al2O3 catalyst (Practical Pd content = 2.4136 wt%) showed the highest catalytic performance with 95.34% H-2 release amount, TOF of 230.5 min(-1) and 85.4% selectivity of NECZ. Combined with the charac-terization analysis, it can be proposed that the dehydrogenation performance of 12H-NECZ dependent on the alloy phases, reasonable electronic structures and nanoparticle size of catalysts. The fine-tuned alloy degree and appropriate nanoparticle size of Pd1Co1/Al2O3 bring the 17.7% increase of H-2 release amount and 99.5% increase of NECZ selectivity than those of Pd/Al2O3. For the bimetallic catalysts, the enhancement of selectivity of NECZ is mainly from the increase of the kinetic constant of rate-limiting step. (c) 2021 Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.

Keyword :

Liquid organic hydrogen carrier Dodecahydro-N-Ethylcarbazole Pd-M/Al2O3 bimetallic catalysts Activity and selectivity

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GB/T 7714 Gong, Xiang , Guo, Shuyi , Jiang, Zhao et al. Tuning the alloy degree for Pd-M/Al2O3 (M=Co/ Ni /Cu) bimetallic catalysts to enhance the activity and selectivity of dodecahydro-N-ethylcarbazole dehydrogenation [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2021 , 46 (68) : 33835-33848 .
MLA Gong, Xiang et al. "Tuning the alloy degree for Pd-M/Al2O3 (M=Co/ Ni /Cu) bimetallic catalysts to enhance the activity and selectivity of dodecahydro-N-ethylcarbazole dehydrogenation" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 46 . 68 (2021) : 33835-33848 .
APA Gong, Xiang , Guo, Shuyi , Jiang, Zhao , Yang, Bolun , Fang, Tao . Tuning the alloy degree for Pd-M/Al2O3 (M=Co/ Ni /Cu) bimetallic catalysts to enhance the activity and selectivity of dodecahydro-N-ethylcarbazole dehydrogenation . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2021 , 46 (68) , 33835-33848 .
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Tuning surface inductive electric field in microporous organic polymers for Xe/Kr separation EI
期刊论文 | 2021 , 426 | Chemical Engineering Journal
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Abstract :

Understanding how the local polar sites in porous adsorbent surface affect their adsorption performance remains a challenge in molecular related separation process. We present an in-depth study of silver (Ag), cobalt (Co), iron (Fe) and nickel (Ni) ions on hyper cross-linked microporous organic polymer (HCP) in which all metal ions act as polar sites for xenon (Xe) and krypton (Kr) adsorption. Surface electrostatic potential analysis revealed that Xe adsorption strength at metal sites differs from that of Kr. Charge density difference analysis proved that the precise charge transfer between metal ions and Xe. These effects could strengthen the inductive energy caused by surface electric field for Xe adsorption in metal ions decorated HCP (HCP-M). Adsorption kinetics experiments showed that the adsorption rates of Xe on HCP-M (20.45–47.19 cm3/(cm3·s)) are much higher than that of Kr (9.45–17.38 cm3/(cm3·s)). The HCP-Ni can adsorb 90 ml Xe per volume with 16.20 Xe/Kr selectivity in Xe, Kr and N2 ternary gas mixture, which was among the well performing porous organic polymers reported. The Xe/Kr adsorptive separation performance of HCP-M stemmed mainly from the optimized inductive energy and the small-pore confinement effect of HCP-M, which could significantly facilitate preferential selective adsorption of Xe over Kr. © 2021 Elsevier B.V.

Keyword :

Organic polymers Charge transfer Metals Separation Xenon Metal ions Microporous materials Microporosity Electric fields Crosslinking Adsorption

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GB/T 7714 Wu, Yue , Zhang, Wenxiang , Chen, Shuhui et al. Tuning surface inductive electric field in microporous organic polymers for Xe/Kr separation [J]. | Chemical Engineering Journal , 2021 , 426 .
MLA Wu, Yue et al. "Tuning surface inductive electric field in microporous organic polymers for Xe/Kr separation" . | Chemical Engineering Journal 426 (2021) .
APA Wu, Yue , Zhang, Wenxiang , Chen, Shuhui , Fu, Yu , Yan, Tong , Huang, Wenbo et al. Tuning surface inductive electric field in microporous organic polymers for Xe/Kr separation . | Chemical Engineering Journal , 2021 , 426 .
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Chemical looping conversion characteristics and kinetic behavior of main components in microalgae biomass:Glycine and starch EI SCIE
期刊论文 | 2021 , 156 | JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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Biomass chemical looping process (BCLP) could realize the in-situ separation of carbon dioxide with nearly zero energy consumption, making the entire conversion process carbon negative. In this paper, thermal behavior from BCLP of the main components of microalgae was investigated. Glycine (GE) and starch (ST) were selected as the main compounds of protein and carbohydrate of the main organic components of microalga. Using Fe2O3 as the oxygen carrier, thermal behavior and kinetic characteristics of main compounds under different oxygen carrier ratios and different heating rates were studied. The results showed that the chemical looping conversion behavior of GE and ST changed with the change of oxygen carrier ratio and heating rate. By studying the distribution of the main gaseous products and the low calorific value of the sample, it was found that when the mass fraction of Fe2O3 in GE reached 30 %, the low calorific value of the main gaseous products reached the maximum. Under the three heating rates of 10, 20, and 40./min, the maximum low calorific value was 8.98, 9.36 and 10.08 MJ m 3, respectively. When the mass fraction of Fe2O3 in ST reached 30 %, the low heating value of the main gaseous products at the three heating rates reached the minimum, and when Fe2O3 increased to 50 %, the low heating value suddenly rose to the maximum. The kinetic parameters of the main gaseous products showed that the activation energy required for the three gaseous products of CO, CO2 and H-2 released by GE thermal interpretation were all the smallest, which were 6.227 kJ mol(-1).2.645 kJ mol(-1).19.447 kJ mol(-1), respectively. The activation energy required for ST thermal release of CO was the smallest. Besides, ST-Fe-50 needed the least activation energy to release CH4, CO2 and H-2 through chemical looping conversion, which were 13.704 kJ mol(-1).1.824 kJ mol(-1).33.191 kJ mol-1, respectively. The research results in this paper provide references for guiding the selection of microalgae raw materials and the development of chemical looping conversion equipment.

Keyword :

Gaseous product distribution Kinetics Chemical looping gasification Microalgae biomass

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GB/T 7714 Wu, Song , Yang, Bolun , Zhang, Bo et al. Chemical looping conversion characteristics and kinetic behavior of main components in microalgae biomass:Glycine and starch [J]. | JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS , 2021 , 156 .
MLA Wu, Song et al. "Chemical looping conversion characteristics and kinetic behavior of main components in microalgae biomass:Glycine and starch" . | JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 156 (2021) .
APA Wu, Song , Yang, Bolun , Zhang, Bo , Guo, Wei , Wu, Zhiqiang . Chemical looping conversion characteristics and kinetic behavior of main components in microalgae biomass:Glycine and starch . | JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS , 2021 , 156 .
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Synergistic effects from co-pyrolysis of lignocellulosic biomass with low-rank coal: A perspective based on the interaction of organic components EI SCIE
期刊论文 | 2021 , 306 | FUEL
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A methodological approach towards synergistic effects from co-pyrolysis of lignocellulosic biomass with low-rank coal was proposed. The main maceral group from low-rank coal and primary organic components from biomass were selected to investigate the interaction of organic components. Thermal behavior and kinetic analysis on the co-pyrolysis of cellulose with acid-washed low-rank coal/vitrinite/inertinite were explored via TGA combined with iso-conversional method. The results indicated that the maceral group from low-rank coal showed different synergistic effects on the pyrolysis parameters and product distribution. The synergistic effect of vitrinite on the yield of volatile was closely related to its mass ratio. Positive and negative synergistic effects were observed when the mass ratio of vitrinite was 25% and 75%, respectively. Inertinite inhibited the formation of volatiles during co-pyrolysis and overall exhibited a negative synergy. No obvious synergy was observed for acid-washed low-rank coal when the heating was 10 degrees C.min(-1) and 20 degrees C.min(-1), while positive synergistic effects were found at a high mass ratio and heating rate. The integrative action of maceral groups played a significant role during the co-pyrolysis process.

Keyword :

Cellulose Co-pyrolysis Synergistic effects Low-rank coal Lignocellulosic biomass

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GB/T 7714 Wu, Zhiqiang , Zhang, Jie , Fan, Yingjie et al. Synergistic effects from co-pyrolysis of lignocellulosic biomass with low-rank coal: A perspective based on the interaction of organic components [J]. | FUEL , 2021 , 306 .
MLA Wu, Zhiqiang et al. "Synergistic effects from co-pyrolysis of lignocellulosic biomass with low-rank coal: A perspective based on the interaction of organic components" . | FUEL 306 (2021) .
APA Wu, Zhiqiang , Zhang, Jie , Fan, Yingjie , Zhang, Bo , Guo, Wei , Zhang, Rongjiang et al. Synergistic effects from co-pyrolysis of lignocellulosic biomass with low-rank coal: A perspective based on the interaction of organic components . | FUEL , 2021 , 306 .
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Thermodynamics and kinetics analysis from liquid chemical looping gasification of lignin with bismuth-based oxygen carrier EI SCIE
期刊论文 | 2021 , 219 | FUEL PROCESSING TECHNOLOGY
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Liquid chemical looping gasification (LCLG) provides a new direction for fuel gasification, which can avoid the technical challenges brought by using solid OCs, such as acting and coking. But the related research ideas and data are few. Here, we have conducted relevant research. Thermodynamics and kinetics analysis of lignin (LG) with bismuth oxide (Bi2O3) during LCLG were investigated. Through thermodynamic analysis, the optimal temperature for LCLG was 800-850 degrees C, and the optimal mixing mass ratio of Bi2O3/LG was about 5.00-6.00. The effects of heating rate and oxygen carrier mass ratio on apparent activation energies were carried out by thermogravimetric analyzer combined with on-line mass spectrometry. The apparent activation energies of lignin samples were 151.333,171.572,199.826, and 127.012 kJ.mol(-1). The activation energy of the main gas products was obtained by the isoconversion method. In the LCLG process, with the increase of Bi2O3 mixing ratio, the activation energy of CO, CO2, and H-2 formation first increased and then decreased, wherein that of H-2 (59.89 kJ.mol(-1)) was on the peak. The results are conducive to the development of new liquid oxygen carriers and also provide data basis for the multi-way utilization of carbon-based fuels.

Keyword :

Kinetic analysis Liquid chemical looping gasification Simulation Biomass Thermodynamics

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GB/T 7714 Guo, Wei , Zhang, Bo , Zhang, Rongjiang et al. Thermodynamics and kinetics analysis from liquid chemical looping gasification of lignin with bismuth-based oxygen carrier [J]. | FUEL PROCESSING TECHNOLOGY , 2021 , 219 .
MLA Guo, Wei et al. "Thermodynamics and kinetics analysis from liquid chemical looping gasification of lignin with bismuth-based oxygen carrier" . | FUEL PROCESSING TECHNOLOGY 219 (2021) .
APA Guo, Wei , Zhang, Bo , Zhang, Rongjiang , Zhang, Jie , Li, Yaowu , Wu, Zhiqiang et al. Thermodynamics and kinetics analysis from liquid chemical looping gasification of lignin with bismuth-based oxygen carrier . | FUEL PROCESSING TECHNOLOGY , 2021 , 219 .
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移动式颗粒床气固分离性能冷态试验
期刊论文 | 2021 , 27 (4) , 90-96 | 洁净煤技术
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以热解为首要步骤的煤炭分质转化技术可在较温和的条件下实现煤炭高效利用,其中含尘热解气净化是该技术规模化应用需要解决的关键问题之一.颗粒床过滤技术具有过滤效率高、滤料成本低等优势.为考察移动式颗粒床对粉煤热解气除尘过滤的有效性,选用小麦为颗粒床冷态试验的滤料介质,硅胶粉为试验粉尘,在自行设计的冷态试验平台上考察各操作条件对颗粒层过滤除尘效率的影响规律.结果表明:过滤效率的影响因素顺序为:表观风速>过滤层厚度>滤料下料速度;过滤效率随表观风速的增大而减小,随过滤层厚度的增加而增大.过滤层厚度增至200 mm以上时,过滤效率变化较小;而滤料下料速度增大,过滤效率减小.粉尘粒径达10 μm后,过滤效率基本可维持在98%.在优化的过滤条件下(过滤层厚度为300 mm,滤料下料速度为0.002 m/s,过滤时间为10 min),最佳过滤效率可达98.1%.试验结果不仅实现了对常温下移动颗粒层过滤性能的预测,也为粉煤热解含尘煤气颗粒床热态除尘装置的设计提供了依据.

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GB/T 7714 樊英杰 , 刘今乾 , 马琛 et al. 移动式颗粒床气固分离性能冷态试验 [J]. | 洁净煤技术 , 2021 , 27 (4) : 90-96 .
MLA 樊英杰 et al. "移动式颗粒床气固分离性能冷态试验" . | 洁净煤技术 27 . 4 (2021) : 90-96 .
APA 樊英杰 , 刘今乾 , 马琛 , 郭伟 , 杨伯伦 , 吴志强 . 移动式颗粒床气固分离性能冷态试验 . | 洁净煤技术 , 2021 , 27 (4) , 90-96 .
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Aliphatic amine decorating metal–organic framework for durable SO2 capture from flue gas EI SCIE
期刊论文 | 2021 , 259 | Separation and Purification Technology
WoS CC Cited Count: 6
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The efficient capture of SO2 using porous adsorbents is of great significance in flue gas desulfurization (FGD) process as the reversible physical adsorption can avoid solvents/water consumption and minimize waste generation. Metal organic frameworks (MOFs) are interesting and promising candidates to sequestrate SO2 in flue gas as their high porosities, regular pore sizes and easy functionalization. However, the coordination bond nature of MOFs makes stably and persistently capture acidic SO2 gas remains a challenge in MOF. Herein, an aliphatic amine decorating strategy was introduced in a MOF (MIL-101(Cr)) with open metal sites for reversible and durable SO2 capture. The successful synthesis of N,N'-dimethylethylenediamine (mmen) decorated MIL-101(Cr) named mmen-MIL-101(Cr), was confirmed by powder X-ray diffraction (PXRD), Fourier transform-infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive spectra (EDS) and nitrogen adsorption–desorption isotherm. Compared with chemisorption of SO2 on open Cr sites in MIL-101(Cr), the SO2 adsorption sites are transferred from Cr to N atom in mmen-MIL-101(Cr), leading to reversible SO2 adsorption and desorption. The dipole–dipole interaction between N atom and S(SO2) atom, combining with hydrogen bonding interaction between O(SO2) and H in mmen can increase the SO2 absorption capacity of mmen-MIL-101(Cr) under low SO2 partial pressure. The SO2 adsorption capacity and cycle stability properties were studied in detail by adsorption isotherm and dynamic breakthrough measurement. An unprecedented high SO2 adsorb capacity (upto 4.27 mmol·g−1) at SO2 partial pressure (0.5 mbar) is achieved in mmen-MIL-101(Cr), which is a great improvement compared to 2.92 mmol·g−1 SO2 adsorption capacity for primordial MIL-101(Cr) under the same condition. Moreover, mmen-MIL-101(Cr) manifests reversible SO2 adsorption–desorption performance while MIL-101(Cr) gradually loses its adsorption capacity during dynamic breakthrough cycles. The high SO2 sorption capacity in low partial pressure and impressive cycle stability of mmen-MIL-101(Cr) demonstrate aliphatic amine decorating strategy is an efficient way to improve MOF's SO2 capture capability, which also can extend to other porous adsorbents for low concentration FGD process. © 2020 Elsevier B.V.

Keyword :

Organometallics Flues Fourier transform infrared spectroscopy Sulfur dioxide Aliphatic compounds Chromium metallography Pore size Flue gases Metal-Organic Frameworks Stability Gas adsorption Adsorption isotherms Atoms Hydrogen bonds Scanning electron microscopy Desorption Partial pressure

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GB/T 7714 Zhang, Zhonghui , Yang, Bolun , Ma, Heping . Aliphatic amine decorating metal–organic framework for durable SO2 capture from flue gas [J]. | Separation and Purification Technology , 2021 , 259 .
MLA Zhang, Zhonghui et al. "Aliphatic amine decorating metal–organic framework for durable SO2 capture from flue gas" . | Separation and Purification Technology 259 (2021) .
APA Zhang, Zhonghui , Yang, Bolun , Ma, Heping . Aliphatic amine decorating metal–organic framework for durable SO2 capture from flue gas . | Separation and Purification Technology , 2021 , 259 .
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Post modification of Oxo-clusters in robust Zirconium-Based metal organic framework for durable SO2 capture from flue gas EI SCIE
期刊论文 | 2021 , 276 | SEPARATION AND PURIFICATION TECHNOLOGY
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The efficient capture of SO2 after the combustion of fossil fuels is of great challenge as the low SO2 concentration (<500 ppm) and coexisting with CO2, water, O-2 in flue gas. Robust zirconium-based MOFs possessing accessible polar sites usually have high SO2 adsorption capacity but poor durably in adsorption desulfurization due to the acidic sulfate deposition on the Zr-O cluster. Herein, a Zr-O cluster post-modification method was introduced in a Zr-MOF (MOF-808) to form EDTA-MOF-808 (EDTA, ethylene diaminetetraacetic acid) for selective and durable removal of SO2. The introduction of EDTA not only improve their SO2 adsorption capacity, but also sharply increase their SO2/CO2 selectivity (57.2 vs 8.9) and SO2/N-2 selectivity (1915.8 vs 292.7) at low SO2 partial pressure. Moreover, the synergistic effects of dipole and hydrogen bonding interaction between SO2 and EDTA in EDTA-MOF-808 make the capture of SO2 in a reversible manner, which can prevent the formation of S(VI) species in Zr-MOF. DFT calculation confirmed that SO2 was interacted with EDTA through moderate dipole-dipole interaction (S(SO2) with N(EDTA)) and hydrogen bonds (H(-COOH) with O(SO2)). Systematic investigations including thermodynamic SO2 adsorption, dynamic breakthrough experiments, stability tests and DFT-calculations in both MOF-808 and EDTA-MOF-808 confirmed the efficient performance of post modification of Zr-O clusters with EDTA in Zr-MOFs for durable SO2 capture.

Keyword :

Flue gas desulfurization Sulfur dioxide sorption Metal-organic framework Post modification

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GB/T 7714 Zhang, Zhonghui , Yang, Bolun , Wu, Yue et al. Post modification of Oxo-clusters in robust Zirconium-Based metal organic framework for durable SO2 capture from flue gas [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2021 , 276 .
MLA Zhang, Zhonghui et al. "Post modification of Oxo-clusters in robust Zirconium-Based metal organic framework for durable SO2 capture from flue gas" . | SEPARATION AND PURIFICATION TECHNOLOGY 276 (2021) .
APA Zhang, Zhonghui , Yang, Bolun , Wu, Yue , Zhang, Wenxiang , Ma, Heping . Post modification of Oxo-clusters in robust Zirconium-Based metal organic framework for durable SO2 capture from flue gas . | SEPARATION AND PURIFICATION TECHNOLOGY , 2021 , 276 .
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Dibenzo-21-crown-7-ether contained 6FDA-based polyimide membrane with improved gas selectivity EI SCIE
期刊论文 | 2021 , 264 | Separation and Purification Technology
WoS CC Cited Count: 1
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In the present work, a novel crown ether contained polyimide membrane was synthesized by 4, 4′- (hexafluoro - isopropylidene) diphthalic anhydride, 1, 4 - Bis (4 - aminophenoxy) benzene, and di(aminobenze)-21-Crown-7 ether. The physical property and chemical structure were studied by FTIR, 1HNMR, XRD, TGA, GPC, and tensile testing. Molecular dynamic simulations were applied to investigate the effects of crown ether content on free volume property of membranes. The permselectivity was studied employing He, H2, CO2, N2, and CH4 pure gas as feed. The effects of crown ether content, operation temperature, feed gas pressure, and aging effect on membranes were investigated. Results show that introducing crown ether into polymeric backbone can increase the chains packing density, which lead to reduce d-spacing as well as accessible fractional free volume. These permeabilities followed the order of He > H2 > CO2 > N2 > CH4, indicating a typical molecular sieving separation mechanism in membranes. The introduction of DB21C7 can improve the diffusion selectivity and solubility selectivity. For example, CO2/N2 and CO2/CH4 diffusion selectivity display impressing increase of 53% and 84% respectively by incorporation of 30 mol% DB21C7. As a consequence, the membrane with 30 mol% DB21C7 exhibit remarkable selectivity increase of about 173.5% (for He/CH4), 156.9% (for H2/CH4), 109.4% (for CO2/N2), 88.5% (for CO2/CH4) than non-crown ether contained polyimide membrane. Hence, future membrane material design for high purity gas requirement may be considered as a promising alternative membrane by introducing the crown ether moiety into the polymeric backbone. © 2021 Elsevier B.V.

Keyword :

Polyimides Free volume Crown ethers Tensile testing Ligands Molecular dynamics Membranes Carbon dioxide Ethers Well spacing

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GB/T 7714 Zhang, Beibei , Qiao, Jie , Dong, Chenxi et al. Dibenzo-21-crown-7-ether contained 6FDA-based polyimide membrane with improved gas selectivity [J]. | Separation and Purification Technology , 2021 , 264 .
MLA Zhang, Beibei et al. "Dibenzo-21-crown-7-ether contained 6FDA-based polyimide membrane with improved gas selectivity" . | Separation and Purification Technology 264 (2021) .
APA Zhang, Beibei , Qiao, Jie , Dong, Chenxi , Yi, Chunhai , Qi, Suitao , Yang, Bolun . Dibenzo-21-crown-7-ether contained 6FDA-based polyimide membrane with improved gas selectivity . | Separation and Purification Technology , 2021 , 264 .
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