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学者姓名:邱挺
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Ethyl methyl carbonate (EMC) serves as a vital raw material in the production of electrolytes for lithium-ion batteries. In recent years, there has been increasing focus on the development of economically efficient methods to prepare EMC through the transesterification occurring between dimethyl carbonate (DMC) and diethyl carbonate (DEC). Nevertheless, the acidic or alkaline catalysts commonly used at present are not suitable for this system. Herein, the acid-base double active site catalyst, known as [DBU+][IM−]@UiO-66, is designed and prepared to enable its application in the synthesis of EMC. The synthesis of [DBU+][IM−]@UiO-66 involves the incorporation of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and imidazole (IM) molecules within the porous framework of UiO-66. The integration of these components creates an active catalyst with acid sites provided by the defect of UiO-66 and base sites derived from [DBU+][IM−] ionic liquid. The porous structure of UiO-66 offers an extensive surface area, ensuring sufficient exposure of the active sites for catalytic reactions. This catalyst combines the mutually reinforcing effects of acid and base sites, enhancing its catalytic performance and selectivity in the desired reaction. In the targeted synthesis of EMC, the [DBU+][IM−]@UiO-66 catalyst demonstrates remarkable efficiency. An EMC yield of 62% and an EMC selectivity of 99.5% were achieved, which demonstrated the effectiveness of the reaction system. The acid sites facilitate the activation of the reactants, while the base sites contribute to the formation of intermediate species. This dual functionality enhances the reaction kinetics and promotes the desired conversion of starting materials into EMC. © 2025 Institute of Process Engineering, Chinese Academy of Sciences.
Keyword :
Acid-base bifunctional catalyst Acid-base bifunctional catalyst Ethyl methyl carbonate Ethyl methyl carbonate Ionic liquid Ionic liquid Synergistic catalyst Synergistic catalyst UiO-66 UiO-66
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GB/T 7714 | Ge, X. , Xu, X. , Li, S. et al. Transesterification of dimethyl carbonate and diethyl carbonate over [DBU+][IM−]@UiO-66: synergistic catalysis of acid-base active sites [J]. | Green Chemical Engineering , 2025 . |
MLA | Ge, X. et al. "Transesterification of dimethyl carbonate and diethyl carbonate over [DBU+][IM−]@UiO-66: synergistic catalysis of acid-base active sites" . | Green Chemical Engineering (2025) . |
APA | Ge, X. , Xu, X. , Li, S. , Ye, C. , Qian, J. , Wu, Y. et al. Transesterification of dimethyl carbonate and diethyl carbonate over [DBU+][IM−]@UiO-66: synergistic catalysis of acid-base active sites . | Green Chemical Engineering , 2025 . |
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Dimethyl carbonate (DMC) is an important chemical raw material extensively used in organic synthesis, lithium-ion battery electrolytes, etc. The primary method for industrial synthesis of DMC involves transesterification between ethylene carbonate and MeOH but faces issues with difficult catalyst separation and low catalytic activity. Based on the synergistic catalytic activity of cation and anion, this study develops poly(ionic liquid)s of [NXPIL][PHO] and [N3PIL][Y] with varying alkaline sites and alkalinity levels. This is accomplished by constructing functional polymer monomers containing free radical polymerization sites and nitrogen-containing alkaline groups, and by polymerizing them with suitable cross-linking monomers in a specific ratio before exchanging the resulting polymers with different anions. Results show that doping with nitrogen-containing alkaline groups leads to enhanced basic functional sites while appropriate anions provide intensified alkalinity levels. The [N3PIL][PHO] obtained exhibits superior catalytic activity in transesterification synthesis of DMC, with a yield of 91.43% and selectivity of 99.96% at a reaction time of 2 h. The study also investigates the impact of poly(ionic liquid) cationic structure and anion types, as well as their interactions, on catalytic performance. The findings reveal that the catalytic activity of poly(ionic liquid) is restricted by the interactions between cation and anion. Based on these findings, a possible reaction mechanism was proposed, providing theoretical support for the high-efficiency production of DMC.
Keyword :
anion and cation regulation anion and cation regulation dimethyl carbonate production dimethyl carbonate production mechanism mechanism poly(ionic liquid)s poly(ionic liquid)s transesterification reaction transesterification reaction
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GB/T 7714 | Qi, Zhaoyang , Zhang, Fuying , Su, Huiyun et al. Functional poly(ionic liquid) with unique zwitterionic structure as efficient catalyst for the conversion of ethylene carbonate to dimethyl carbonate [J]. | SMART MOLECULES , 2025 . |
MLA | Qi, Zhaoyang et al. "Functional poly(ionic liquid) with unique zwitterionic structure as efficient catalyst for the conversion of ethylene carbonate to dimethyl carbonate" . | SMART MOLECULES (2025) . |
APA | Qi, Zhaoyang , Zhang, Fuying , Su, Huiyun , Ye, Changshen , Wang, Qinglian , Qiu, Ting et al. Functional poly(ionic liquid) with unique zwitterionic structure as efficient catalyst for the conversion of ethylene carbonate to dimethyl carbonate . | SMART MOLECULES , 2025 . |
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The C2-O cleavage of furanic ring is the crucial step in selective hydrogenation of furfuryl alcohol (FOL) to 1,5pentanediol (1,5-PDO). In this study, reduced mixed Ni-Co-Al metal oxide catalysts with rich oxygen vacancy (Ov) and different Co/Ni molar ratios were prepared through intercalation modification of Co-based hydrotalcite by ammonium citrate (CA), followed by calcination and reduction. The catalytic performance exhibited that a quantitative conversion of FOL with 44.4 % yield and 8.2 mmol1,5-PDO & sdot;gcat -1 & sdot;h- 1 productivity of 1,5-PDO were achieved by using Co2Ni1Al1Ox-CA(0.1) (molar ratio of Co:Ni = 2:1; molar concentration ratio of CA:Na2CO3 = 0.1) under optimal conditions. The stability test showed that Co2Ni1Al1Ox-CA(0.1) consistently rendered above 40 % yield of 1,5-PDO in seven consecutive cycles. Catalyst characterizations were carried out using a series of techniques including XPS, EPR, O2-TPD, etc. The results demonstrate that the addition of CA effectively altered the surface molar ratios of Co2+/(Co2++Co3+), thereby regulating the Ov content of the obtained catalysts. The CoO-Ov sites in the catalyst might enhance the adsorption of FOL by eta 1-(O)-alcoholic model, which weakened C2O bond on the furanic ring of FOL. Besides, the H2-TPD anslysis confirmed that the enhanced spillover of hydrogen from Ni0 onto CoO-Ov site, thereby promoting the cleavage of the C2-O bond in FOL and subsequent hydrogenation of enol intermediates. In addition, the DFT calculations imply that FOL adsorption on CoO-Ov site by eta 1-(O)-alcoholic model was significantly favorable than that on pristine CoO sites (-1.68 eV versus -1.55 eV). Consequently, this study has substantiated the crucial role played by CoO-Ov in the reaction pathway leading to 1,5-PDO formation via FOL, proposing a viable scheme for designing catalysts based on transition metals and elucidating their underlying reaction mechanism.
Keyword :
1,5-pentanediol 1,5-pentanediol Furfuryl alcohol Furfuryl alcohol Oxygen vacancy Oxygen vacancy Reduced mixed metal oxide catalysts Reduced mixed metal oxide catalysts Selective hydrogenation Selective hydrogenation
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GB/T 7714 | Xi, Nan , Li, Qiwang , Chen, Yi et al. Reduced mixed Ni-Co-Al metal oxide catalysts with rich oxygen vacancy derived from layered double hydrotalcite for selective hydrogenation of furfuryl alcohol to 1,5-Pentanediol [J]. | CHEMICAL ENGINEERING JOURNAL , 2025 , 512 . |
MLA | Xi, Nan et al. "Reduced mixed Ni-Co-Al metal oxide catalysts with rich oxygen vacancy derived from layered double hydrotalcite for selective hydrogenation of furfuryl alcohol to 1,5-Pentanediol" . | CHEMICAL ENGINEERING JOURNAL 512 (2025) . |
APA | Xi, Nan , Li, Qiwang , Chen, Yi , Bao, Ruixi , Wang, Qinglian , Lin, Yixiong et al. Reduced mixed Ni-Co-Al metal oxide catalysts with rich oxygen vacancy derived from layered double hydrotalcite for selective hydrogenation of furfuryl alcohol to 1,5-Pentanediol . | CHEMICAL ENGINEERING JOURNAL , 2025 , 512 . |
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Conjugated microporous polymers (CMPs) are porous polymers that exhibit desirable functionality for a wide range of adsorption applications. Here, we report a one-step scalable approach that exploits moderately high temperature and pressure to overcome these limitations. Remarkably, this method achieves functional CMPs within 1 h with a specific surface area of 925 m2 g-1). Extending the reaction time to 5 h further enchances porosity to 1145 m2 g-1-a 20-fold improvement over conventional methods (58 m2 g-1). The original wide pore size distribution is refined to fall within a covalent organic framework (COF)-like microporous range, allowing the CMPs to function as versatile adsorbents for toxic mercury ions, achieving benchmark performance with an impressive capacity of 1429 mg g-1, surpassing all previously reported materials. In addition, this approach features degas-free and facile scale-up opportunities, opening real possibilities for wide industrial applications of CMPs.
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GB/T 7714 | Tang, Duanlian , Xiong, Zhuo , Worth, John D. et al. One-pot scalable production of conjugated microporous polymers with exceptional functionality [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2025 , 13 (24) : 19007-19014 . |
MLA | Tang, Duanlian et al. "One-pot scalable production of conjugated microporous polymers with exceptional functionality" . | JOURNAL OF MATERIALS CHEMISTRY A 13 . 24 (2025) : 19007-19014 . |
APA | Tang, Duanlian , Xiong, Zhuo , Worth, John D. , Qiu, Ting , Faul, Charl F. J. , Chen, Jie . One-pot scalable production of conjugated microporous polymers with exceptional functionality . | JOURNAL OF MATERIALS CHEMISTRY A , 2025 , 13 (24) , 19007-19014 . |
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Capsules with designable chemical and textural structures provide a universal and versatile platform for enzyme immobilization. Herein, a capsular biocatalyst (TpBD CP@Lactate dehydrogenase@Silica capsules, TLS capsules) was developed by entrapping enzyme within the wall of conjugated polymer (CP)/silica hybrid capsules. The porous wall of TLS capsules provided sufficient adsorption sites for a high enzyme loading capacity of 102.79 mg g-1, as well as abundant and shorter substrate transfer pathways, resulting in catalytic efficiency of 133.0 % that of free LDH. TLS capsules achieved an optimal balance between substrate enrichment and diffusion at a 30 mmol L-1 Na2SiO3 solution concentration, resulting in a 14 % increase in catalytic activity. Furthermore, the mineralized silica layer provided suitable enzyme-carrier interactions, ensuring the structural stability of the enzyme under extreme conditions. TLS capsules maintained over 80.47 % relative activity after eight cycles. Our work broadens the scope for developing and applying enzyme immobilization platforms.
Keyword :
Biocatalysis Biocatalysis Capsules Capsules Conjugated polymer Conjugated polymer Enzyme immobilization Enzyme immobilization Lactate dehydrogenase Lactate dehydrogenase Silica Silica
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GB/T 7714 | Wang, Yanliang , Shi, Jiafu , Wu, Zhenhua et al. Conjugated polymer/enzyme/silica hybrid capsules for lactate biosynthesis [J]. | CHEMICAL ENGINEERING SCIENCE , 2025 , 310 . |
MLA | Wang, Yanliang et al. "Conjugated polymer/enzyme/silica hybrid capsules for lactate biosynthesis" . | CHEMICAL ENGINEERING SCIENCE 310 (2025) . |
APA | Wang, Yanliang , Shi, Jiafu , Wu, Zhenhua , Li, Wenping , Liu, Xinyue , Yang, Chen et al. Conjugated polymer/enzyme/silica hybrid capsules for lactate biosynthesis . | CHEMICAL ENGINEERING SCIENCE , 2025 , 310 . |
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Designing efficient adsorbents for the deep removal of refractory dibenzothiophene (DBT) from fuel oil is vital for addressing environmental issues such as acid rain. Herein, zinc gluconate and urea-derived porous carbons SF-ZnNC-T (T represents the carbonization temperature) were synthesized without solvents. Through a temperature-controlled process of 'melting the zinc gluconate and urea mixture, forming H-bonded polymers, and carbonizing the polymers,' the optimal carbon, SF-ZnNC-900, was obtained with a large surface area (2280 m2 g−1), highly dispersed Zn sites, and hierarchical pore structures. Consequently, SF-ZnNC-900 demonstrated significantly higher DBT adsorption capacity of 43.2 mg S g−1, compared to just 4.3 mg S g−1 for the precursor. It also demonstrated good reusability, fast adsorption rate, and the ability for ultra-deep desulfurization. The superior DBT adsorption performance resulted from the evaporation of residual zinc species, which generated abundant mesopores that facilitated DBT transformation, as well as the formation of Zn-Nx sites that strengthened the host-guest interaction (ΔE = −1.466 eV). The solvent-free synthesized highly dispersed Zn-doped carbon shows great potential for producing sulfur-free fuel oil and for designing metal-loaded carbon adsorbents. © 2024 Institute of Process Engineering, Chinese Academy of Sciences
Keyword :
Carbonization Carbonization Desulfurization Desulfurization Elastomers Elastomers Fuel oils Fuel oils Mesopores Mesopores
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GB/T 7714 | Lu, Ping , Sun, Zhenhua , Ke, Xinrong et al. Solvent-free synthesis of highly dispersed zinc-doped porous carbons as efficient dibenzothiophene adsorbents [J]. | Green Energy and Environment , 2025 , 10 (5) : 994-1001 . |
MLA | Lu, Ping et al. "Solvent-free synthesis of highly dispersed zinc-doped porous carbons as efficient dibenzothiophene adsorbents" . | Green Energy and Environment 10 . 5 (2025) : 994-1001 . |
APA | Lu, Ping , Sun, Zhenhua , Ke, Xinrong , Ye, Changshen , Huang, Zhixian , Qiu, Ting . Solvent-free synthesis of highly dispersed zinc-doped porous carbons as efficient dibenzothiophene adsorbents . | Green Energy and Environment , 2025 , 10 (5) , 994-1001 . |
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This study proposes integrating the catalytic distillation dehydrogenation system with a solid oxide fuel cell (SOFC) system to recover and reuse the waste heat from the SOFC exhaust gases. The research focuses on a 25 kW SOFC system and categorizes potential system layouts into three types based on the final use of the exhaust gas. Through a comprehensive analysis from energy, environmental, economic and exergy (4E) perspectives, the results show that while the SOFC stack dominates the energy and economic factors, leading to consistent performance across similar system layouts, the thermodynamic irreversibility during system operation is influenced by exergy destruction and exergy loss. Using a multi-criteria evaluation approach, the optimal integration scheme, where the final exhaust gas is utilized for preheating air, was identified when all four indicators were equally weighted. The results indicate that the optimal system achieves a thermal efficiency of 46.97% and improves system energy efficiency by 52.59%. Furthermore, compared to the initial non-integrated system, the integrated system reduces environmental carbon emissions by 58.56%, increases economic efficiency by 36.64% and reduces exergy losses by 94.11%, highlighting the advantages of system integration. More importantly, the integrated system has a competitive levelized cost of electricity (LCOE) of 0.134 $/kWh, demonstrating its potential for a wide range of applications, from small-scale to large industrial processes.
Keyword :
4E analysis 4E analysis Catalytic distillation Catalytic distillation Dehydrogenation system Dehydrogenation system Integrated system Integrated system Perhydro-benzyltoluene Perhydro-benzyltoluene SOFC SOFC
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GB/T 7714 | Le, Keyu , Ren, Haoran , Huang, Zhixian et al. 4E analysis of an integrated system of catalytic distillation dehydrogenation system of perhydro benzyltoluene and solid oxide fuel cell [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 111 : 342-360 . |
MLA | Le, Keyu et al. "4E analysis of an integrated system of catalytic distillation dehydrogenation system of perhydro benzyltoluene and solid oxide fuel cell" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 111 (2025) : 342-360 . |
APA | Le, Keyu , Ren, Haoran , Huang, Zhixian , Yin, Wang , Lin, Yixiong , Duan, Pengfei et al. 4E analysis of an integrated system of catalytic distillation dehydrogenation system of perhydro benzyltoluene and solid oxide fuel cell . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 111 , 342-360 . |
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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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Dry reforming of methane (DRM), which is a viable approach for carbon capture and utilization, is notably inclined towards carbon deposition due to the formation of cold spots, causing catalyst rapid deactivation, thereby limiting its industrial application. In order to prevent catalyst coking, it is imperative to improve the heat and mass transfer processes in DRM reactors. A foam reactor with hierarchical pore structure was proposed in this work, which is composed of fine and coarse pores and avoids contact thermal resistance due to the contact of foam structures with different pore sizes. Based on lattice Boltzmann model, this work investigated the impact of hierarchical pore structure on the heat and mass transfer, as well as DRM reaction in Ni/Al2O3 based foam reactors. The findings suggest an optimal overall heat transfer coefficient with the variation of dcoarse/dfine under equal pumping power. Furthermore, it reveals a synergistic mechanism between the heat and mass transfer processes, identifying an optimal hierarchical pore structure which, compared to uniform fine and coarse pore structures, facilitates an enhancement in reaction performance by 14.1 % and 13.0 %, respectively. This work provides a theoretical foundation and technical direction for the design of foam reactors.
Keyword :
Dry reforming of methane Dry reforming of methane Foam reactor Foam reactor Heat and mass transfer Heat and mass transfer Hierarchical pore structure Hierarchical pore structure Lattice Boltzmann method Lattice Boltzmann method
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GB/T 7714 | Lin, Yixiong , Yu, Minkai , Wang, Qinglian et al. Unraveling the structure-performance relationship of foam reactor with hierarchical pore structure for dry reforming of methane reaction [J]. | FUEL , 2025 , 389 . |
MLA | Lin, Yixiong et al. "Unraveling the structure-performance relationship of foam reactor with hierarchical pore structure for dry reforming of methane reaction" . | FUEL 389 (2025) . |
APA | Lin, Yixiong , Yu, Minkai , Wang, Qinglian , Zhang, Wei , Yin, Wang , Yang, Chen et al. Unraveling the structure-performance relationship of foam reactor with hierarchical pore structure for dry reforming of methane reaction . | FUEL , 2025 , 389 . |
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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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