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学者姓名：邱挺
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Abstract ：
To cope with small production quantities of specialized chemicals, modular production plants have gained increasing attention in recent years. Zero-gravity distillation (ZGD) is a small-scale distillation process, which offers high separation efficiency, proving advantageous for modularizing processes. In this research, the study of ZGD process intensification is conducted. A ZGD experimental setup was established and the separation of ethanol/water mixtures was chosen as an example to investigate the effects of metal foam material, liquid filling rate, and PPI of metal foam on the separation performance, which was quantified by height equivalent to a theoretical plate (HETP). The results reveal that under constant feed volume (50 ml) and the mole fraction of ethanol (0.2), employing 40 PPI copper foam and 100 % liquid filling rate results in HETP of 5.56 cm for ZGD unit, demonstrating superior separation performance. Subsequently, an optimization strategy adopting sandwich internal structure with ordered hierarchical meta foam is proposed to further intensify the separation process. In contrast to the case of employing 40 PPI copper foam and liquid filling rate of 100 %, the optimization strategy can further reduce HETP by approximately 18.17 %, being 4.55 cm. This finding provides a theoretical foundation and technical guidance for developing zero-gravity distillation technology.
Keyword ：
Height equivalent to a theoretical plate (HETP) Height equivalent to a theoretical plate (HETP) Ordered hierarchical metal foam Ordered hierarchical metal foam Process intensification Process intensification Sandwich internal structure Sandwich internal structure Separation performance Separation performance Zero-gravity distillation (ZGD) Zero-gravity distillation (ZGD)
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| GB/T 7714 | Lin, Yixiong , Huang, Zhibin , Jiang, Pengze et al. Separation process intensification for zero-gravity distillation through sandwich internal structure with ordered hierarchical metal foam [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2025 , 360 . |
| MLA | Lin, Yixiong et al. "Separation process intensification for zero-gravity distillation through sandwich internal structure with ordered hierarchical metal foam" . | SEPARATION AND PURIFICATION TECHNOLOGY 360 (2025) . |
| APA | Lin, Yixiong , Huang, Zhibin , Jiang, Pengze , Wang, Qinglian , Yin, Wang , Yang, Chen et al. Separation process intensification for zero-gravity distillation through sandwich internal structure with ordered hierarchical metal foam . | SEPARATION AND PURIFICATION TECHNOLOGY , 2025 , 360 . |
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Given the rising demand for cyclohexanol in the nylon industry and the escalating issues of high production costs and potential environmental harm in traditional cyclohexanol production, developing a safe, environmentally friendly, and cost-effective process for producing cyclohexanol from cyclohexene is crucial. In addition, the different composition of intermediates will significantly affect the economy of each reaction unit. Therefore, this study proposed a novel reactive distillation process involving esterification, transesterification, and hydrolysis. Three reactive distillation processes of 1000 t/a capacity of cyclohexanol production with different purity intermediates were designed and optimized using a sequential iterative algorithm to minimize the total annual cost, which amounted to 422116.65 $/a. Furthermore, the energy consumption and environmental emissions were compared after optimization. By comparing the influence of various purity intermediates on each process unit, it was qualitatively determined that higher purity requirements did not necessarily yield superior results. Finally, to quantify the influence of each variable on economic performance of whole process, response surface method was performed using central composite design for minimum total annual cost objectives with a 3.25 % error between model and simulation. This study aims to guide the development of a comprehensive, costeffective, and efficient reactive distillation process for cyclohexanol production.
Keyword ：
Cyclohexanol Cyclohexanol Different purity intermediates Different purity intermediates Process intensification Process intensification Reactive distillation Reactive distillation Response surface methodology Response surface methodology
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| GB/T 7714 | Hou, Zhengkun , Wang, Na , Ding, Qiuyan et al. Economic and environmental assessment of reactive distillation process for cyclohexanol production with different purity intermediates [J]. | ENERGY , 2025 , 317 . |
| MLA | Hou, Zhengkun et al. "Economic and environmental assessment of reactive distillation process for cyclohexanol production with different purity intermediates" . | ENERGY 317 (2025) . |
| APA | Hou, Zhengkun , Wang, Na , Ding, Qiuyan , Li, Hong , Qiu, Ting , Wang, Hongxing et al. Economic and environmental assessment of reactive distillation process for cyclohexanol production with different purity intermediates . | ENERGY , 2025 , 317 . |
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Furfuryl alcohol (FOL) is commercially available by selective hydrogenation of furfural (FAL). A variety of catalysts have been developed for such purpose, among which Cu-based catalysts show superior catalytic performance. However, copper nanoparticles with complex valence states are easy to agglomerate during hydrogenation reaction, which might have a negative influence on the catalytic performance. The carbon coating is an efficient strategy to prevent the sintering of Cu-based catalysts. Herein, a strategy based on the thermal decomposition of Cu-EDTA complex was designed to prepare carbon encapsulated Cu-based catalysts. The prepared catalysts were applied in the selective hydrogenation of FAL to FOL in the batch reactor. The results showed that a nearly quantitative conversion of FAL with a selectivity of 98.7 % towards FOL was achieved using CuOx@NC-150 (molar ratio of Cu: Na4EDTA·4H2O=2:1; obtained by oxidative activation at 150 °C) under 140 °C, 3 MPa in 4 h. The performance was comparable to that of the commercial CuCr2O4 catalyst under the identical conditions. In addition, the developed carbon encapsulated Cu-based catalysts exhibited a slightly better stability than CuCr2O4 catalyst in terms of FOL yield in five consecutive cycles. XPS and XAES characterizations implied that the presence of a suitable surface ratio of Cu+/(Cu++Cu0) of the prepared catalyst may contribute to the selective hydrogenation of FAL to FOL. © 2024 Elsevier B.V.
Keyword ：
Aldehydes Aldehydes Batch reactors Batch reactors Carbon Carbon Catalyst selectivity Catalyst selectivity Chromium compounds Chromium compounds Coatings Coatings Copper compounds Copper compounds Decomposition Decomposition Furfural Furfural Hydrogenation Hydrogenation Molar ratio Molar ratio Sintering Sintering
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| GB/T 7714 | Xi, Nan , Chen, Shiting , Bao, Ruixi et al. Layered carbon encapsulated CuOx nanopaticles for selective hydrogenation of furfural to furfuryl alcohol [J]. | Molecular Catalysis , 2024 , 565 . |
| MLA | Xi, Nan et al. "Layered carbon encapsulated CuOx nanopaticles for selective hydrogenation of furfural to furfuryl alcohol" . | Molecular Catalysis 565 (2024) . |
| APA | Xi, Nan , Chen, Shiting , Bao, Ruixi , Wang, Qinglian , Lin, Yixiong , Yue, Jun et al. Layered carbon encapsulated CuOx nanopaticles for selective hydrogenation of furfural to furfuryl alcohol . | Molecular Catalysis , 2024 , 565 . |
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Compressing metal foam flow field usually causes a higher pressure drop and uncontrollable pore structure while enhancing the water discharge capability of proton exchange membrane fuel cell (PEMFC). To further enhance the water discharge capability of metal foam flow field at a low cost of pressure drop, a novel metal foam flow field exhibiting hierarchical pore structure(dcoarse/dfine=2; Vcoarse/Vfine=1; dfine=0.5 mm) is first introduced. This work numerically investigates water management characteristics and output performance of novel metal foam flow field. Subsequently, 3D printing technology is employed to precisely manufacture metal foam flow fields, which are compared with several flow fields in the cathode side experimentally. Experimental results demonstrate that at 1.5 A/cm2 during 3 h, the amount of water discharge in metal foam flow field with hierarchical pore structure is close to parallel flow field, which is 1.12 times and 1.30 times that in metal foam flow field with uniform coarse pore and uniform fine pore, respectively. Moreover, compared with the previous optimized strategy, namely metal foam flow field with 75 PPI and a compression rate of 0.75, metal foam flow field with hierarchical pore structure can not only improve the maximum net power density by 9.5 % and water discharge amount by 14.1 %, but also decrease two-thirds of the pressure drop in the cathode side. This research lays the theoretical groundwork and offers technical insight for the implementation of metal foam flow fields in PEMFCs. © 2024 Elsevier B.V.
Keyword ：
3D printing 3D printing Cathodes Cathodes Drops Drops Flow fields Flow fields Metal foams Metal foams Parallel flow Parallel flow Pore structure Pore structure Pressure drop Pressure drop Proton exchange membrane fuel cells (PEMFC) Proton exchange membrane fuel cells (PEMFC) Water management Water management
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| GB/T 7714 | Sun, Yun , Lin, Yixiong , Wan, Zhongmin et al. Water management and performance enhancement in proton exchange membrane fuel cell through metal foam flow field with hierarchical pore structure [J]. | Chemical Engineering Journal , 2024 , 494 . |
| MLA | Sun, Yun et al. "Water management and performance enhancement in proton exchange membrane fuel cell through metal foam flow field with hierarchical pore structure" . | Chemical Engineering Journal 494 (2024) . |
| APA | Sun, Yun , Lin, Yixiong , Wan, Zhongmin , Wang, Qinglian , Yang, Chen , Yin, Wang et al. Water management and performance enhancement in proton exchange membrane fuel cell through metal foam flow field with hierarchical pore structure . | Chemical Engineering Journal , 2024 , 494 . |
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Abstract ：
The balance between water discharge and mass transfer within metal foam flow field is vital for elevating the performance of proton exchange membrane fuel cell (PEMFC). To obtain an improved balance, this work designs a novel bilayer structure with two types of PPI (pore per inch) for metal foam flow field. Experimental and numerical results confirmed that arranging a metal foam featuring a smaller PPI in the layer 1 near the membrane electrode assembly (MEA) and a larger PPI in the layer 2 away from the MEA is beneficial to enhance the output performance. The excellent PPI combination for balancing mass transfer and water discharge involves utilizing a 50 PPI metal foam for the layer 1 and 110 PPI metal foam for the layer 2. Compared to conventional metal foam with 50 PPI, metal foam flow field with excellent PPI combination showcases a 11.2 % increase in water discharge and a 13.2 % boost in mass transfer, leading to a notable 23.5 % performance enhancement. Similarly, compared to conventional metal foam with 110 PPI, there is a 7.3 % decrease in mass transfer but a significant 29.5 % increases in water discharge, leading to a 15.2 % performance improvement. © 2024 Elsevier Ltd
Keyword ：
Bilayer structure Bilayer structure Mass transfer Mass transfer Metal foam flow field Metal foam flow field PEMFC PEMFC Water discharge Water discharge
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| GB/T 7714 | Sun, Y. , Lin, Y. , Wang, Q. et al. Design and optimization of bilayer structure in metal foam flow field for proton exchange membrane fuel cell [J]. | Applied Thermal Engineering , 2024 , 257 . |
| MLA | Sun, Y. et al. "Design and optimization of bilayer structure in metal foam flow field for proton exchange membrane fuel cell" . | Applied Thermal Engineering 257 (2024) . |
| APA | Sun, Y. , Lin, Y. , Wang, Q. , Yin, W. , Liu, B. , Yang, C. et al. Design and optimization of bilayer structure in metal foam flow field for proton exchange membrane fuel cell . | Applied Thermal Engineering , 2024 , 257 . |
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N-Methylpyrrolidone is widely used across various sectors; however, the energy-efficient removal of 1,4-butyrolactone impurity from NMP remains a significant challenge due to their nearly identical molecular size and properties. Herein, we synthesize a series of flexible molecular materials, perethylated pillar[n]arene (n = 5, 6) with enhanced crystallization efficiency under the induce of dichloromethane solvent. Through a size-specific recognition and varied host–guest interaction, EtP5 demonstrates exceptional 99 % selectivity for GBL against NMP; single-crystal structure analyses and theoretical calculations unveil intricate C-H···O hydrogen bonding interactions, and π-π stacking interactions between EtP5 and GBL. The single-crystal structure of the two-guest complexes has proved the existence of adsorption transition states, and it comprehensively elucidates the dynamic adsorption process of EtP5 with GBL, supported by theoretical calculations. Reuse experiments validate these crystals could be fully reused without loss of performance. © 2024 Elsevier B.V.
Keyword ：
1,4-Butyrolactone 1,4-Butyrolactone Adsorption mechanism Adsorption mechanism N-Methylpyrrolidone N-Methylpyrrolidone Perethylated pillar[5]arene Perethylated pillar[5]arene
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| GB/T 7714 | Yin, M. , Yang, C. , Tang, D. et al. Revealing the mechanism behind the highly selective separation of 1,4-butyrolactone from n-methylpyrrolidone using nonporous adaptive crystals of perethylated pillar[5]arene [J]. | Chemical Engineering Journal , 2024 , 495 . |
| MLA | Yin, M. et al. "Revealing the mechanism behind the highly selective separation of 1,4-butyrolactone from n-methylpyrrolidone using nonporous adaptive crystals of perethylated pillar[5]arene" . | Chemical Engineering Journal 495 (2024) . |
| APA | Yin, M. , Yang, C. , Tang, D. , Huang, S. , Lou, X. , Cui, R. et al. Revealing the mechanism behind the highly selective separation of 1,4-butyrolactone from n-methylpyrrolidone using nonporous adaptive crystals of perethylated pillar[5]arene . | Chemical Engineering Journal , 2024 , 495 . |
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Abstract ：
N-Methylpyrrolidone is widely used across various sectors; however, the energy -efficient removal of 1,4-butyrolactone impurity from NMP remains a significant challenge due to their nearly identical molecular size and properties. Herein, we synthesize a series of flexible molecular materials, perethylated pillar[ n ]arene ( n = 5, 6) with enhanced crystallization efficiency under the induce of dichloromethane solvent. Through a size -specific recognition and varied host -guest interaction, EtP5 demonstrates exceptional 99 % selectivity for GBL against NMP; single -crystal structure analyses and theoretical calculations unveil intricate C-H center dot center dot center dot O hydrogen bonding interactions, and 7C -7C stacking interactions between EtP5 and GBL. The single -crystal structure of the two -guest complexes has proved the existence of adsorption transition states, and it comprehensively elucidates the dynamic adsorption process of EtP5 with GBL, supported by theoretical calculations. Reuse experiments validate these crystals could be fully reused without loss of performance.
Keyword ：
4-Butyrolactone 4-Butyrolactone Adsorption mechanism Adsorption mechanism N-Methylpyrrolidone N-Methylpyrrolidone Perethylated pillar[5]arene Perethylated pillar[5]arene
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| GB/T 7714 | Yin, Minlei , Yang, Chen , Tang, Duanlian et al. Revealing the mechanism behind the highly selective separation of 1,4-butyrolactone from n-methylpyrrolidone using nonporous adaptive crystals of perethylated pillar[5]arene [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 495 . |
| MLA | Yin, Minlei et al. "Revealing the mechanism behind the highly selective separation of 1,4-butyrolactone from n-methylpyrrolidone using nonporous adaptive crystals of perethylated pillar[5]arene" . | CHEMICAL ENGINEERING JOURNAL 495 (2024) . |
| APA | Yin, Minlei , Yang, Chen , Tang, Duanlian , Huang, Shiyin , Lou, Xiaoyu , Cui, Rongkai et al. Revealing the mechanism behind the highly selective separation of 1,4-butyrolactone from n-methylpyrrolidone using nonporous adaptive crystals of perethylated pillar[5]arene . | CHEMICAL ENGINEERING JOURNAL , 2024 , 495 . |
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Abstract ：
The balance between water discharge and mass transfer within metal foam flow field is vital for elevating the performance of proton exchange membrane fuel cell (PEMFC). To obtain an improved balance, this work designs a novel bilayer structure with two types of PPI (pore per inch) for metal foam flow field. Experimental and numerical results confirmed that arranging a metal foam featuring a smaller PPI in the layer 1 near the membrane electrode assembly (MEA) and a larger PPI in the layer 2 away from the MEA is beneficial to enhance the output performance. The excellent PPI combination for balancing mass transfer and water discharge involves utilizing a 50 PPI metal foam for the layer 1 and 110 PPI metal foam for the layer 2. Compared to conventional metal foam with 50 PPI, metal foam flow field with excellent PPI combination showcases a 11.2 % increase in water discharge and a 13.2 % boost in mass transfer, leading to a notable 23.5 % performance enhancement. Similarly, compared to conventional metal foam with 110 PPI, there is a 7.3 % decrease in mass transfer but a significant 29.5 % increases in water discharge, leading to a 15.2 % performance improvement.
Keyword ：
Bilayer structure Bilayer structure Mass transfer Mass transfer Metal foam flow field Metal foam flow field PEMFC PEMFC Water discharge Water discharge
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| GB/T 7714 | Sun, Yun , Lin, Yixiong , Wang, Qinglian et al. Design and optimization of bilayer structure in metal foam flow field for proton exchange membrane fuel cell [J]. | APPLIED THERMAL ENGINEERING , 2024 , 257 . |
| MLA | Sun, Yun et al. "Design and optimization of bilayer structure in metal foam flow field for proton exchange membrane fuel cell" . | APPLIED THERMAL ENGINEERING 257 (2024) . |
| APA | Sun, Yun , Lin, Yixiong , Wang, Qinglian , Yin, Wang , Liu, Bo , Yang, Chen et al. Design and optimization of bilayer structure in metal foam flow field for proton exchange membrane fuel cell . | APPLIED THERMAL ENGINEERING , 2024 , 257 . |
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The semiconductor industry's rapid evolution necessitates ultra-high-purity N-methyl pyrrolidone (NMP) as an essential electronic-grade solvent. The development of an efficient coordination material to reduce trace metal ions, particularly Na and K metal ions, to below 1 ppb in NMP solution is a significant challenge. To address this, a novel coordination material, St-DVB-g-ACE, has been developed for the removal of Na and K metal ions from NMP. The material was synthesized by grafting 4 '-aminobenzo-15-crown-5-ether onto a strong acid gel resin. The resulting St-DVB-g-ACE-3 exhibited excellent coordination performance for Na and K metal ions, with maximum Langmuir adsorption capacities reaching 20,000 mu g/g and 33,333 mu g/g, respectively. Of particular interest was the ability of St-DVB-g-ACE-3 to reduce all trace metal ions in industrial-grade NMP to below 1 ppb within a fixed bed column, achieving the stringent requirements for electronic-grade NMP at the G3 level. Additionally, the absorbent enhances the purity of NMP from 99.82 % to 99.84 %, indicating that the material is not dissolved and can exist stably in NMP. Its excellent recyclability and reproducibility make it highly practical for industrial use. Density functional theory (DFT) simulation, complemented by spectral analyses, revealed the interaction force and thermodynamic properties between Na and K metal ions and crown ether ring, and illustrated the interaction between anionic sulfonic group (- SO3- ) and metal ions. The prepared resin-grafted crown ether adsorbents are highly effective in the thorough removal of trace metal ions from NMP solution, offering a novel and effective method for the production of electronic-grade NMP.
Keyword ：
4 ' -Aminobenzo-15-crown-5-ether 4 ' -Aminobenzo-15-crown-5-ether Electronic-grade NMP Electronic-grade NMP Removal of trace Na and K metal ions Removal of trace Na and K metal ions Resin Resin The coordination mechanism The coordination mechanism
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| GB/T 7714 | Chang, Zhouxin , Guo, Wenli , Yang, Chen et al. Removal of trace Na and K metal ions by resin-grafted crown ether for electronic-grade N-methyl pyrrolidone purification [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 356 . |
| MLA | Chang, Zhouxin et al. "Removal of trace Na and K metal ions by resin-grafted crown ether for electronic-grade N-methyl pyrrolidone purification" . | SEPARATION AND PURIFICATION TECHNOLOGY 356 (2024) . |
| APA | Chang, Zhouxin , Guo, Wenli , Yang, Chen , Ye, Changshen , Wang, Qinglian , Li, Bochen et al. Removal of trace Na and K metal ions by resin-grafted crown ether for electronic-grade N-methyl pyrrolidone purification . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 356 . |
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Furfuryl alcohol (FOL) is commercially available by selective hydrogenation of furfural (FAL). A variety of catalysts have been developed for such purpose, among which Cu-based catalysts show superior catalytic performance. However, copper nanoparticles with complex valence states are easy to agglomerate during hydrogenation reaction, which might have a negative influence on the catalytic performance. The carbon coating is an efficient strategy to prevent the sintering of Cu-based catalysts. Herein, a strategy based on the thermal decomposition of Cu-EDTA complex was designed to prepare carbon encapsulated Cu-based catalysts. The prepared catalysts were applied in the selective hydrogenation of FAL to FOL in the batch reactor. The results showed that a nearly quantitative conversion of FAL with a selectivity of 98.7 % towards FOL was achieved using CuO x @NC-150 (molar ratio of Cu: Na 4 EDTA & sdot;4H 2 O=2:1; obtained by oxidative activation at 150 degrees C) under 140 degrees C, 3 MPa in 4 h. The performance was comparable to that of the commercial CuCr 2 O 4 catalyst under the identical conditions. In addition, the developed carbon encapsulated Cu-based catalysts exhibited a slightly better stability than CuCr 2 O 4 catalyst in terms of FOL yield in five consecutive cycles. XPS and XAES characterizations implied that the presence of a suitable surface ratio of Cu + /(Cu + +Cu 0 ) of the prepared catalyst may contribute to the selective hydrogenation of FAL to FOL.
Keyword ：
Carbon coating Carbon coating Cu based catalyst Cu based catalyst Furfural Furfural Furfuryl alcohol Furfuryl alcohol Selective hydrogenation Selective hydrogenation
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| GB/T 7714 | Xi, Nan , Chen, Shiting , Bao, Ruixi et al. Layered carbon encapsulated CuO x nanopaticles for selective hydrogenation of furfural to furfuryl alcohol [J]. | MOLECULAR CATALYSIS , 2024 , 565 . |
| MLA | Xi, Nan et al. "Layered carbon encapsulated CuO x nanopaticles for selective hydrogenation of furfural to furfuryl alcohol" . | MOLECULAR CATALYSIS 565 (2024) . |
| APA | Xi, Nan , Chen, Shiting , Bao, Ruixi , Wang, Qinglian , Lin, Yixiong , Yue, Jun et al. Layered carbon encapsulated CuO x nanopaticles for selective hydrogenation of furfural to furfuryl alcohol . | MOLECULAR CATALYSIS , 2024 , 565 . |
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