CHEMISTRY-A EUROPEAN JOURNAL
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2025
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IF 3.7
Yue-Qi Liu,Wen-Hao Pan,Lin-Xia He,Chenglong Han,Tong Lu,Ning-Ning Zhang,Kun Liu
Graphical AlH 3 ·(NMP) x complexes with varying coordination numbers were synthesized. AlH 3 ·(NMP) 1.0 single crystals were isolated from AlH 3 ·(NMP) x mixtures, and successfully elucidated the structure of AlH 3 ·(NMP) 1.0 through single-crystal X-ray diffraction. The coordination number of AlH 3 ·(NMP) x modulates the morphology of Al nanoparticles. AlH 3 ·(NMP) 1.0 exhibited the fastest decomposition rate, yielding highly monodisperse Aluminum nanoparticles (Al NPs) with well-defined shapes and the narrowest size distribution. The controlled chemical synthesis of aluminum nanocrystals (Al NCs) is crucial for their applications in plasmonics, photocatalysis, and optoelectronics. However, there is still a lack of correlation between the precursor of Al hydride N-methylpyrrolidine (AlH 3 ·(NMP) x ) and the Al NC synthesis outcomes. Here, we report the synthesis of AlH 3 ·(NMP) x complexes with different coordination numbers (x from 1.0 to 2.0) and their characterization as precursors regulating the morphology of Al NCs. We isolated AlH 3 ·(NMP) 1.0 single crystals from AlH 3 ·(NMP) x mixtures and successfully elucidated the structure of AlH 3 ·(NMP) 1.0 through single-crystal X-ray diffraction. Importantly, AlH 3 ·(NMP) 1.0 exhibited the fastest decomposition rate, yielding highly monodisperse Al NCs with well-defined shapes and the narrowest size distribution, while higher coordination numbers led to increased dispersity in size and irregular morphologies. Additionally, we observed distinct multipole plasmonic resonances in Al NCs synthesized from lower coordination number precursors, highlighting their superior optical properties. This work establishes a direct correlation between precursor coordination chemistry and Al NC synthesis outcomes, providing a foundation for optimizing nanoparticle production for advanced material applications.
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY
·
2025
·
IF 6.6
Chenyang Li,Liqian Zhao,Feihong Guo,Xiaoxiang Jiang,Yuxiu Duan,Wensheng Xu
Solar energy, with its advantages of safety, reliability, cleanliness, and wide distribution, has seen a significant increase in photovoltaic (PV) installations. However, this growth has led to a large number of end of life PV modules. The adhesive effect of EVA (ethylene–vinyl acetate) makes it difficult to effectively separate and recycle the various layers of these modules. Therefore, the key to recycling silicon PV modules lies in removing or weakening the adhesive properties of EVA while protecting core components such as silicon from damage, thereby achieving efficient separation and recycling of the layers. This paper proposes a novel green treatment method using N-methylpyrrolidone (NMP) as a solvent for recycling discarded PV modules. Through experimental studies, we investigated the effects of different NMP treatment conditions-including temperature, time, sheet size, and rotor speed-on the reaction rate of EVA. The optimal processing condition was found to be heating at 150 °C for 45 min. Kinetic fittings were performed under various conditions, and parameters were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and contact angle measurements. The mechanism of the reaction between NMP and EVA was analyzed. Finally, experiments were conducted on Commercial PV modules to develop a fundamentally harmless recycling process. A life cycle assessment of this recycling process was also carried out, providing theoretical guidance for future applications of NMP in the treatment of waste silicon PV modules.
研究领域:
材料科学
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环境科学
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能源技术
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2019
·
IF 2.298
Yibo Fang,Zanjun Gao,Kangli Bao,Jiongliang Huang,Xiaosheng Ji,Xiaohong Han,Guangming Chen
The working pairs of HFCs + organic absorption solvents are commonly used in absorption systems. In this work, the vapor–liquid equilibrium (VLE) data of HFC-32 + DMETrEG at (293.15–343.15) K and HFC-32 + NMP at (323.15–343.15) K were measured in a dual cycle apparatus. The VLE data were correlated by Antione-type equation, NRTL, and PR + MHV1 + NRTL model, respectively. The predicted VLE data showed a good agreement with the experimental VLE data. NRTL model was recommended to predict the VLE data and characteristic of solution for HFC-32 + DMETrEG and HFC-32 + NMP, compared to PR + MHV1 + NRTL model. The comparison of VLE characteristics for five binary mixtures (HFC-32 + DMETrEG, HFC-32 + NMP, HFC-32 + DMF, HFC-32 + DMAC, and HFC-32 + DMEDEG) was carried out. The compared results showed that the system pressures of HFC-32 + DMETrEG and HFC-32 + NMP were lower than other three mixtures, and the negative deviations from Raoult’s law of HFC-32 + DMETrEG and HFC-32 + NMP were larger than the others, which indicated that the two mixtures were more suitable as the working fluids for absorption system.
研究领域:
化学工程
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热力学
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产品关联
DOI
高影响因子
International Journal of Minerals Metallurgy and Materials
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2019
·Vol. 26
·期 12
·1512-1522
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IF 1.221
Zhao Jun,Zuo Hai-bin,Wang Jing-song,Xue Qing-guo
The high-value utilization of low-rank coal would allow for expanding energy sources, improving energy efficiencies, and alleviating environmental issues. In order to use low-rank coal effectively, the hypercoals (HPCs) were co-extracted from two types of low-rank coal and biomass via N-methyl-2-purrolidinone (NMP) under mild conditions. The structures of the HPCs and residues were characterized by proximate and ultimate analysis, Raman spectra, and Fourier transform infrared (FT-IR) spectra. The carbon structure changes within the raw coals and HPCs were discussed. The individual thermal dissolution of Xibu (XB) coal, Guandi (GD) coal, and the biomass demonstrated that the biomass provided the lowest thermal dissolution yield Y 1 and the highest thermal soluble yield Y 2 at 280°C, and the ash content of three HPCs decreased as the extraction temperature rose. Co-thermal extractions in NMP at various coal/biomass mass ratios were performed, demonstrating a positive synergic effect for Y 2 in the whole coal/biomass mass ratios. The maximum value of Y 2 was 52.25wt% for XB coal obtained with a XB coal/biomass of 50wt% biomass. The maximum value of Y 2 was 50.77wt% for GD coal obtained with a GD coal/biomass of 1:4. The difference for the optimal coal/biomass mass ratios between XB and GD coals could be attributed to the different co-extraction mechanisms for this two type coals.
研究领域:
能源化学
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煤化工
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生物质转化
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热化学转化
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资源综合利用
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2018
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IF 2.196
Yibo Fang,Wenjie Guan,Kangli Bao,Yanzhi Wang,Xiaohong Han,Guangming Chen
The vapor–liquid equilibria (VLE) data of R1234yf + NMP and R1234yf + DMETrEG were measured at the temperature range of 293.15–353.15 K in a dual cycle experimental apparatus. The thermodynamic consistency of the VLE data was checked with an area test. The VLE data were correlated by the nonrandom two-liquid model, and the results showed that they had a good agreement. The average relative deviation of pressure for R1234yf + DMETrEG was within 1.37% and its maximum was 3.51%; the average relative deviation of pressure for R1234yf + NMP was within 1.43% and its maximum was 3.65%. The results still showed that there was a large positive deviation between the binary system R1234yf + NMP and Raoul’s law, and the system R1234yf + DMETrEG exhibited a slight positive deviation to the ideal solution.
研究领域:
化学工程
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热力学
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产品关联
DOI
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Shangjie Wang,Qiang Lv,Yutong Jing,Bo Wang,Dianlong Wang,Huakun Liu,Shixue Dou
Solid polymer electrolytes (SPEs) are considered one promising candidate for lithium metal batteries due to their high flexibility, low cost, and roll-to-roll scalability. However, conventional SPEs prepared via ex situ methods are confronted with challenges such as poor contact and high resistance at the electrode|SPE interface, as well as low ionic conductivity at room temperature. In this study, we developed a quasi-solid electrolyte (QSE) using an in situ polymerization approach, employing butyl acrylate as the monomer and incorporating NMP as an additive. Spectroscopic investigations and DFT calculations revealed that NMP tends to form an overleaf-structured [Li(NMP) 3 ][TFSI] complex with LiTFSI, promoting lithium salt dissociation. Owing to this advantage, the QSE exhibits high room-temperature ionic conductivity (6.94 × 10 −4 S cm −1 ) and an extensive electrochemical stability window (5.01 V vs. Li + /Li). Furthermore, the in situ polymerization method facilitates full contact at the interface, enhancing the interfacial stability and reducing the interface resistance, thus resulting in stable cycling of Li|Built-in QSE|Li symmetric cell for 1100 h at 0.1 mA cm −2 . The assembled LiFePO 4 |Built-in QSE|Li cell also demonstrates excellent rate and long-term cycling performance. Our findings offer valuable insights into the interaction between organic additives and lithium salts and present a novel strategy for the development of polymer electrolytes.
研究领域:
材料科学
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电化学
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能源存储
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产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2020
·Vol. 7
·期 17
·3204-3216
·
IF 5.958
Chaoyue Zhao,Xianming Zhang,Ziting He,Qingxin Guan,Wei Li
For acetylene hydrochlorination, as a substitute for toxic mercury catalysts, Cu-based catalysts are probably the most promising and highly active non-noble metal catalysts. Here, density functional theory (DFT) was used to reveal the mechanism for how the NMP ligand significantly promotes the activity and stability of the Cu-catalyzed acetylene hydrochlorination reaction. According to the experimental and DFT results, the high activity of the NMP coordinated Cu-based catalyst is attributed to the catalyst–ligand and substrate–ligand interactions, which stabilize the substrate-Cu(II)-ligand complex in the catalytic cycle. Moreover, the most important two stages were investigated in detail: the reduction of (i) Cuα+ to Cu0 and (ii) Cu2+ to Cu+ during the reaction process. The results demonstrate that the NMP ligand prevents high valence Cu2+ from being reduced due to the geometric distortion influence and the hydrogen bond interaction between the catalysts and ligands. Also, NMP could inhibit the carbon deposition by avoiding the formation of Cu(0) and its strong adsorption of acetylene on the surface.
研究领域:
化学
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催化科学
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理论计算
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2025
·
IF 11.3
Feng Xie,Guanghuan Li,Feng Yan,Chengbin Xiao,Pengju Wang,Xuehua Shen,Biao Yang,Han Lin,Huarong Luo,Zuotai Zhang
Solid–liquid biphasic absorbents are a promising solution for overcoming the high-energy consumption challenge faced by liquid amine-based CO2 capture technologies. However, their practical applications are often hindered by difficulties in separating viscous solid-phase products. This study introduces a novel nonaqueous absorbent system (PD/PZ/NMP) composed of 4-amino-1-methylpiperidine (PD), piperazine (PZ), and N-methyl-2-pyrrolidone (NMP), engineered to produce easily separable powdery products. The PD/PZ/NMP absorbent achieves a CO2 loading of 0.86 mol-CO2/mol-amine, with 91% of CO2 concentrated in the solid phase. It demonstrates excellent cyclic stability, maintaining a regeneration efficiency of 91% after five regeneration cycles, and reduces energy consumption by 52% compared with the conventional monoethanolamine absorbent. Remarkably, PZ plays a crucial role in regulating the crystal composition of solid-phase products, transforming them from a viscous state to a crystalline powder. Characterization and density functional theory analysis explain the crystal-phase regulation mechanism: PD absorbs CO2 to form zwitterions (PDH+COO–), affording viscous products, and PZ forms protonated amines (PZH+) and monocarbamates (PZCOO–), which interact with PDH+COO– via hydrogen bonding to form a crystalline powder. These findings demonstrate the CO2 capture efficacy of the PD/PZ/NMP absorbent and provide a robust theoretical framework for fabricating solid–liquid biphasic absorbents tailored for practical applications.
研究领域:
化学工程
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环境科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Xintao Deng,Fuyuan Yang,Jugang Ma,Yangyang Li,Jian Dang,Minggao Ouyang
A ternary phase field model is developed for water/N-methyl-2-pyrrolidone(NMP)/polysulfone system to simulate the non-solvent induced phase separation process. Our model succeeds to predict detailed asymmetric membrane structures, with dense skin layer and porous sublayer constructed from polymer network . It is found that the pore distribution and connectivity of polymer network change with the initial composition of casting solution and coagulation bath. Tortuosity and maximum pore size along the direction of thickness are calculated, with a typical trade-off relation found between them. Electrochemical separation performance was evaluated and found to have a notable correlation with structural characteristics.
研究领域:
材料科学
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化学工程
·
膜技术
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
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2022
·
IF 4.432
Jiachen Guo,Liu Yang,Ling Zhang,Chunzhong Li
Recently, layered black phosphorus (BP) has become a rising star in two-dimensional materials because of high thermal stability, excellent mechanical properties , and size effect. Layered BP can be used as an ideal filler for the preparation of polymer-based composites with high performance. Realizing the exfoliation and functionalization of BP has become the key to BP's application. Under the protection of N-methylpyrrolidone (NMP) and the assistance of sucrose, we completed the preparation and functionalization of layered BP by ball milling . Surface grafting of oxygen-containing functional groups can realize the uniform dispersion of BP in matrix and improve its stability in air. As expected, the nanocomposites prepared by adding sucrose grafted BP into polyvinyl alcohol (PVA) matrix have significantly improved flame retardancy and mechanical strength . When the addition amount of BP-sucrose(N) was 5 wt%, compared with pure PVA, the decrease of the peak heat release rate (PHRR) and total heat release (THR) reached 52.5% and 32.8%, and the tensile strength increased by 131.2%. Moreover, the addition of NMP can avoid the excessive destruction of the two-dimensional crystal structure of BP, which can also improve the performance of nanocomposites. Due to the encapsulation effect of sucrose, the nanocomposites have excellent air stability. The A g 1 /A g 2 value only decreases from 0.52 to 0.49 even after three months of exposure to environmental conditions, which proves that the degree of oxidation is low. This work has provided an efficient way to exfoliate and functionalize BP simultaneously, and expanded the application of BP in flame retardant nanocomposites.
研究领域:
材料科学
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高分子科学
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2021
·
IF 2.694
Gongran Ye,Yibo Fang,Yalun Li,Zhikai Guo,Lin Wang,Xiaohong Han
The absorption refrigeration system (ARS) was important for energy saving, which can be driven by low-grade energy. In this work, the mixtures of trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) + N-methyl-2-pyrrolidone (NMP) and R1234ze(E) + triethylene glycol dimethyl ether (DMETrEG) were considered as the promising new working fluids for ARS. The vapor–liquid equilibrium (VLE) data of R1234ze(E) + DMETrEG and R1234ze(E) + NMP binary mixtures were measured using a liquid-recirculation apparatus from 293.15 to 353.15 K. The VLE data were correlated by the five-parameter non-random two-liquid activity coefficient model, and the correlated results showed a good agreement with the experimental VLE data. The average absolute relative deviation and maximum absolute relative deviation of the pressure were 1.70 and 5.11% for R1234ze(E) + NMP and 1.30 and 3.22% for R1234ze(E) + DMETrEG, respectively. The two binary mixtures exhibited positive deviations from Raoult’s law.
研究领域:
热力学
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化学工程
·
制冷技术
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2019
·
IF 4.561
Yameng Wan,Haixia He,Pengshuai Zhang,Rui Zhao,Jiao Sha,Tao Li,Baozeng Ren
In this work, solubility of cis-5-norbornene-exo-2,3-dicarboxylic anhydride (himic anhydride) in binary solvents of (1,4-dioxane, DMF, NMP + ethanol) was experimentally determined by the gravimetric method ranged from 278.15 K to 323.15 K under 0.1 MPa. It was found that solubility of himic anhydride increased with elevating temperature while decreased as the mass fraction of ethanol increased. Solubility order of himic anhydride in three binary solvents was interpreted by comparing the interaction energy ( E inter ) between solute and binary solvents based on density function theory (DFT). Experimental solubility in binary solvents was correlated by the Two-Suffix Margules, NRTL, Wilson, uniquac and Jouyban-Acree-modified Apelblat (J-A-A) model. The Wilson, NRTL, uniquac and Two-Suffix Margules model are suitable to correlate the experimental solubility. Moreover, thermodynamic properties of dissolution process (Δ dis G , Δ dis S , Δ dis H , Δ mix G , Δ mix S , Δ mix H , H 1 E , ∞ , ln γ 1 and ln γ 1 ∞ ) were calculated by the Wilson equation. The dissolution process and mixing process of himic anhydride in selected binary solvents are entropy-positive.
研究领域:
化学工程
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物理化学
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热力学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）