SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Lihong Wang,Jinkai Ruan,Fan Zhang,Zhiqiang Zhang,Tao Zhang
Dioxolanes, which are structural analogs to dioxane, are emerging persistent mobile organic contaminants. These compounds are frequently detected in water and wastewater, but their removal has been rarely addressed in the literature. This work systematically investigated the ozonation of two representative dioxolanes, i.e., 1,3-dioxolane (1,3-D) and 2-methyl-1,3-dioxolane (2-M-1,3-D). The degradation rates of two dioxolanes exhibited a positive correlation with both ozone dosage and solution pH increment. Specifically, direct ozone oxidation dominates the degradation of dioxolanes at slightly acidic pH, while hydroxyl radical ( • OH) becomes the primary oxidant under weak alkaline condition. The second-order reaction rate constants of ozone with 1,3-D and 2-M-1,3-D were determined to be 5.48 and 8.00 M −1 s −1 , respectively. The reaction rate constants with • OH were 9 orders of magnitude higher, reaching (3.75-8.18) × 10 9 and (2.65-5.78) × 10 9 M −1 s −1 for 1,3-D and 2-M-1,3-D, respectively. A kinetic model involving 112 reactions well simulated the degradation of 1,3-D and 2-M-1,3-D under various conditions accordingly. Eight transformation products were identified totally, and seven of them (i.e., formic acid, acetic acid, oxalic acid, formaldehyde, acetaldehyde, glyoxylic acid, and 1,2-ethanediol monoacetate) were quantified. The observed evolution of these identified degradation products concludes that the degradation of 1,3-D and 2-M-1,3-D during ozonation mainly involves H-abstraction, dimerization, ring opening, disproportionation, and hydrolysis. This work not only provides essential kinetic data of dioxolanes, but also sheds light on their potential transformation mechanisms and aquatic environment risks during ozonation process.
研究领域:
环境科学
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水处理
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化学工程
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毒理学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Honglin Yu,Peng Zhang,Mengqi Liu,Daiming Liu,Guodong Zhang,Fei Wang
Although clathrate hydrates were thought to open the Pandora box of hydrogen moderate storage, poor hydration efficiency of hydrogen hydrates impedes its application in hydrogen economy. To improve the situation, an efficient kinetic promoter of cetyltrimethylammonium bromide (CTAB) was proposed to enhance the hydration efficiency of mixed H 2 and 1,3-dioxolane (DIOX) hydrates, the micro structures of which were characterized via Raman spectra. In DIOX system, when CTAB was introduced, hydrate induction time reduces by 91.4 %, hydrate growth rate increases by 185.2 %, and the storage capacity of hydrogen in hydrates is up to 0.582 wt% under a moderate condition (12 MPa, 274.15 K), which increases by 99.32 %. Potential mechanisms behind the enhancement were proposed, and it was deduced that CTAB changes the arrangement of interfacial water molecules and induces hydration shells, which decrease the nucleation energy barrier as confirmed by the profiles of differential scanning calorimetry (DSC), giving rise to fast hydrate nucleation. In addition, hydrogen molecules were thought to enter the cavity of CTAB micelles, which serve as hydrogen vehicles to enhance the mass transfer of hydrogen by interfacial capture and inner release, resulting in fast hydrate formation. To the best of our knowledge, CTAB presents the best promotion effect on the nucleation and growth of H 2 /DIOX mixed hydrates among known kinetic promoters, and this finding promotes the application of clathrate hydrates on hydrogen moderate storage a small step forward.
研究领域:
化学工程
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能源科学
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材料科学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2015
·Vol. 3
·期 33
·8706-8711
·
IF 4.696
Ran Chen,Yi Jiang,Jian Li,Zhongwei An,Xinbing Chen,Pei Chen
Four series of 1,3-dioxolane-terminated liquid crystals were prepared via multi-step reactions based on 4-alkylcyclohexanecarboxylic acids. Their structures were confirmed by infrared spectrometry (IR), nuclear magnetic resonance (NMR) and mass spectrometry (MS). Their properties were measured by differential scanning calorimetry (DSC), polarising optical microscopy (POM), X-ray diffraction (XRD), Abbe refractometer and an electrical constants instrument. The results show that the positive dielectric anisotropy and birefringence of the tolane-liquid crystals are increased significantly by an introduction of 1,3-dioxolane as a terminal group. The application of the 1,3-dioxolane-terminated liquid crystals in the mixture was investigated and the results show that lower threshold voltage, wider nematic range and higher birefringence are obtained when compared to the mixture containing liquid crystals with buty-3-enyl as a terminal group. The lateral fluoro substituent, alkyne-bridge and 1,3-dioxolane terminal group enhance the stability of the nematic mesophase and the solubility of the corresponding compounds in the common host liquid crystal mixture. Meanwhile, DFT calculations of dipole moments and molecular polarizabilities were used to correlate the experimental findings.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
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2025
·Vol. 31
·期 12
·e202403915
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IF 3.7
Qi Pan,Wanliang Yang,Chen Wu,Dongjia Xie,Yuan Wang
Graphical A ploy(1,3-dioxolane) (PDOL) layer was constructed by a Al(OTf) 3 -induced in-situ solidification process between the interface of LATP and anode/cathode. The as-prepared PDOL as an “interfacial adhesive” can fill the gap between the LATP and the electrode, providing a better interfacial contact and reduced interfacial impedance. Such interfacial adhesive layer not only effectively prevents Li metal from reducing LATP but also provides intimate interface contact and limits unnecessary electron transport. Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) as the solid-electrolyte has attracted much attention for Li-ion batteries. However, the unstable LATP/Li interface and the insufficient contact between the anode/cathode and LATP usually lead to the structural collapse of LATP and the large solid–solid interfacial resistance for Li+ transport. Herein, a poly(1,3-dioxolane) (PDOL) adhesive layer was constructed by a Al(OTf) 3 -induced in-situ solidification process between the interface of LATP and anode/cathode. Such PDOL interfacial adhesive layer alleviates adverse reduction reactions at the LATP/Li interface and provides stable and well-contacted bilateral electrode interfaces. Benefitting from the PDOL interfacial adhesive, the Li|adhesive-LATP|Li symmetric cells achieve a current density up to 0.7 mA cm −2 and exhibit a good cycling stability for more than 2750 h at 0.1 mA cm −2 , and the Li|adhesive-LATP|LiFePO4 solid-state batteries with interface modification exhibit a capacity of 158 mAh g −1 at 0.2 C with a retention of 94 % after 100 cycles.
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
PubMed
高影响因子
Cell Reports Physical Science
·
2025
·
IF 7.3
Yan-Wei Jiang,Zhong-Wei Zhang,Chi Wai Cheung,Jun-An Ma
Trifluoromethyl ketones (TFMKs) represent a crucial class of functional groups in organic synthesis and drug design. Carbo- and heteroatom-substituted methyl TFMKs have been developed extensively, leading to a broad array of structurally diverse trifluoromethylated compounds. However, aminomethyl TFMKs remain largely underexplored, likely due to the intrinsic incompatibility between amino and carbonyl groups. Here, we present a modular strategy for accessing aminomethyl TFMKs in a cyclic acetal-protected form. Using 2-(trifluoromethyl)-1,3-dioxolane-2-carboxylic acid as a masked trifluoroacetyl radical precursor, along with nitroarenes and tertiary alkylamines as readily available reaction components, we demonstrate the feasibility of assembling these compounds under metallaphotocatalytic conditions. This approach selectively yields a diverse array of N -(2-trifluoromethyl)dioxolanylmethyl aniline compounds, which act as inactivated forms of arylaminomethyl TFMKs and can be readily converted into arylaminomethyl TFMKs, various amine derivatives, and azaheterocycles. The structurally distinctive trifluoromethylated dioxolanylmethyl anilines and their downstream products hold significant potential for pharmaceutical and agrochemical development.
研究领域:
有机化学
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药物化学
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合成化学
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Xingang Li,Rui Wang,Yutao Yan,Runnan Zhao,Hong Li,Xin Gao
EG is an important industrial raw material, and the hydrolysis of 2-ethyl-1,3-dioxolane (2ED) to re-obtain EG is a very important step to recover EG from an EG and 1,2-BDO azeotropic mixture via a reversible-reaction-assisted intensification process. The applicability of reactive distillation for 2ED hydrolysis in the presence of KRD-002 ion exchange is studied by experiments and simulations. The reaction kinetics were investigated, and the kinetic parameters were derived. Thermodynamic aspects of the reaction system were discussed, and the NRTL model was built. Pilot-plant reactive distillation experiments were performed using the structured catalytic packing unit (SCPI) with several operating condition variations (reflux ratio (RR), feed mole ratio (FMR), and feed-in style). The experimental results are in good agreement with the simulation results, which prove that the equilibrium stage model can describe the hydrolysis experiments quantitatively. The simulation was subsequently used to determine the influence of important design factors and laid the foundation for industrial application.
研究领域:
化学工程
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工业催化
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jiahang Zou,Hanxu Yang,Shilin Wu,Zhengquan Xiao,Zhipeng Jiang,Wangqiang Shen,Yongtao Li
Ether-based electrolytes are known for their high stability with lithium metal anodes (LMAs), but they often exhibit poor high-voltage stability. Structural optimization of ether-based solvent molecules has been proven to effectively broaden the electrochemical window of these electrolytes, yet the optimization rules within cyclic ethers remain unclear. Herein, we investigate the impact of methyl substitution positions on the molecular properties of 1,3-dioxolane (DOL), a commonly used cyclic ether. The results show that the introduction of methyl groups can effectively inhibit the ring-opening polymerization of DOL. Besides, 4-methyl-1,3-dioxolane (4-Me DOL), with larger steric hindrance compared to 2-methyl-1,3-dioxolane (2-Me DOL), exhibits weaker solvation ability, favoring the formation of anion-rich inner solvation sheath layers and anion-derived interfaces. Even at conventional concentrations, 1 M LiFSI in 4-Me DOL (LiFSI/4-Me DOL) electrolyte demonstrates good LMA stability and an expanded electrochemical window up to 4.6 V. The Li-LiNi 0.5 Co 0.2 Mn 0.3 O 2 (NCM523) cell using LiFSI/4-Me DOL could stably cycle over 300 times. This work reveals a new design principle for solvent molecules.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Haoyu Deng,Xueting Yang,Hanghang Chen,Dezhan Ye,Xiancai Jiang,Yazhou Chen,Chenyi Wang
The in-situ polymerization of 1,3-dioxolane (PDOL) in battery cells has attracted extensive attention, however, the differences of Lewis acid initiators on the DOL monomer conversion (C%) and electrochemical properties has been ignored. Here, it is demonstrated that compare with Sn(OTf) 2 Lewis acid initiator, the gelation of DOL is achieved at the lower addition of In(OTf) 3 . By optimizing their content in the gelation process, their C% are comparable which are 95.7 % and 93.5 % for In(OTf) 3 and Sn(OTf) 2 , respectively. However, the higher ionic conductivity (7.1 × 10 −4 S cm −1 at room temperature), electrochemical window (~4.5 V) and Li + transference number (0.42) are obtained for DOL initiated with In(OTf) 3 , due to its lower molecular weight which is helpful to the intermolecular Li + transport along PDOL main chain; In addition, the Li/Li symmetrical cell of In(OTf) 3 can be stably cycled for >500 h at 3 mA cm −2 , with an over-potential of 178mv. The storage and cycling impedances of half cells further proves the stable interface of In(OTf) 3 initiated DOL toward to lithium metal in comparison with those of Sn(OTf) 2 . Scanning electron microscopy results show a denser and thinner interface in the DOL catalyzed by In(OTf) 3 . Finally, the assembled Li/LiFePO 4 battery delivers specific discharge capacity and capacity retention rates of 115.5mAh g −1 and 85 %, respectively after 300 cycles at 1C. Through the initiator selection, the DOL synthesis and electrochemical properties can be tuned, which further broadens the design idea of PDOL based solid polymer electrolyte.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Materials Today Physics
·
2022
·
IF 11.021
Yanqing Wang,Rui Xu,Bowen Xiao,Dong Lv,Yu Peng,Yun Zheng,Yanghuan Shen,Jingchao Chai,Xiaohua Lei,Shiyu Luo,Xinyi Wang,Xinmiao Liang,Jiwen Feng,Zhihong Liu
Solid-state polymer electrolytes have recently drawn intense attention as alternatives to traditional liquid electrolytes in lithium batteries due to their high energy-density and reliable safety. Unfortunately, current all-solid-state polymer electrolytes suffer from the low ionic conductivity , limiting the power density of energy storage batteries . Here, we propose a deep-eutectic electrolyte, formed directly by the interaction between poly (1,3-dioxolane) and lithium salt without other auxiliary solvents. The ionic conductivity of the designed deep-eutectic polymer electrolyte can approach to 1.5 × 10 −5 S/cm at ambient temperature, which is twenty times higher than that of polyethylene oxide-based electrolytes. Specifically, solid-state NMR verifies the interaction between oxygen in poly (1,3-dioxolane) and lithium ion . The LiFePO 4 /Li battery assembled with deep-eutectic polymer electrolyte delivers a discharge capacity of 139.6 mAh/g at 0.1 C and a capacity retention of 90% after 200 cycles at 0.2 C. Pouch LiFePO 4 /Li batteries also present excellent safety performances. This finding provides a new approach for materials engineering of polymer electrolytes for advanced lithium batteries.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Zecheng Lv,Shifang Mu,Yao Li,Lanyun Wang,Yongliang Xu
Hydrate-based technology is an innovative and efficient way to store and transport methane (CH4), offering advantages such as high efficiency, low energy cost, and safe utilization. This study focuses on the effects of two promoters, i.e., 1,3-dioxolane (1,3-DIOX) with low toxicity and the biodegradable sodium lignosulfonate (SL-Na), on the formation of CH4 hydrates. The results indicate that at 3.0 MPa, the system of 5 mol % 1,3-DIOX + 0.5 wt % SL-Na leads to the maximum increase in nucleation temperature. Besides, 1,3-DIOX significantly increases the nucleation temperature, while high concentrations of SL-Na decrease it. Additionally, 1,3-DIOX can accelerate the formation of CH4 hydrates, while the SL-Na systems require longer growth times and exhibit higher gas consumption. In the study of the compound system, the 5 mol % 1,3-DIOX+0.25 wt % SL-Na compound system has the highest nucleation temperature of 283.65K, the shortest induction time of 1.1 min, and the highest gas consumption rate, which is about 27.82 times that of the pure water system. The 1 mol % 1,3-DIOX+0.5 wt % SL-Na compound system has the longest growth time of 652.6 min and the highest gas storage capacity, which is about 7.41 times that of the pure water system. Although the 1,3-DIOX + SL-Na compound systems generally take longer to nucleate, they accelerate the gas consumption rates overall. In conclusion, combining 1,3-DIOX and SL-Na can improve the kinetic formation of CH4 hydrate, providing valuable methods for optimizing CH4 storage efficiency.
研究领域:
化学工程
·
能源科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Kang Xi,Yongdong Wang,Chengzhe Li,Yue Lei,Xin Xu,Lai Wei,Yunfang Gao
The application of solid-state electrolytes (SSEs) is anticipated to enhance the safety performance of lithium metal batteries (LMBs). However, the progress of SSEs has been hindered by the unstable electrode–electrolyte interfaces (EEIs). In this study, in-situ polymerization of 1,3-dioxolane (DOL) is employed for the preparation of SSEs, with the addition of tributyl borate (TBB) to establish stable EEIs, particularly under high-voltage conditions. On one hand, the addition of TBB promotes the dissociation of lithium salts and increases the concentration of free Li + , resulting in an increase in room temperature ionic conductivity to 1.13 × 10 −4 S cm −1 and an improvement in the Li + transference number to 0.69 for the prepared poly-DOL electrolytes (PDE-TBB). Benefiting from the enhanced Li + transport, the Li/PDE-TBB/Li symmetric cell exhibits a cycle life exceeding 1,000 h with a low polarization voltage as low as 12 mV, and the Li/PDE-TBB/LiFePO 4 cell demonstrates exceptional cyclic stability over 800 cycles at 1C, with a coulombic efficiency exceeding 99.8 % and a capacity retention of 89.6 %. On the other hand, PDE-TBB exhibits improved stability under high-voltage conditions and the capacity to establish robust boron-rich cathode electrolyte interphase (CEI) on the LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) surface, thereby enhancing the structural stability of cathode materials and ensuring exceptional cycling performance of Li/PDE-TBB/NCM811cell. This work presents a promising strategy for developing novel ether-based SSEs suitable for high-voltage lithium metal batteries.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Chengkai Pang,Fei Ding,Wenbin Sun,Jiaquan Liu,Mingming Hao,Ying Wang,Xingjiang Liu,Qiang Xu
A novel dimethyl sulfoxide/1,3-dioxolane (DMSO/1,3-DO) based electrolyte is proposed for lithium/carbon fluorides (Li/CF x ) batteries to enhance the discharge voltage plateau and energy density. Conductivities of the electrolyte of 1 mol L −1 LiBF 4 /DMSO+1,3-DO with different volume ratios are not identical, which have a maximum of 14.85 mS cm −1 . From the tests of galvanostatic discharge, the discharge voltage plateau of the Li/CF x battery with an electrolyte of 1 mol L −1 LiBF 4 /DMSO+1,3-DO (5:5, v:v) can reach 2.69 V at 0.1 C, delivering a maximum discharge capacity of 831 mAh g −1 and the highest energy density of 2196 Wh kg −1 . Compared to Li/CF x batteries with an electrolyte of 1 mol L −1 LiBF 4 /PC+DME (5:5, v:v), the energy density of Li/CF x batteries with an electrolyte of 1 mol L −1 LiBF 4 /DMSO+1,3-DO (5:5, v:v) has been improved more than 12%. With the help of XRD, SEM, TEM, EIS, FT-IR and GC-MS analysis, the results of this work suggest that DMSO/1,3-DO based electrolyte can significantly improve the discharge performance of Li/CF x batteries and keep a good electrochemical stability during discharge. The main reason for improvement of discharge performance is decreasing of both the overpotential of electrochemical polarization of CF x cathodes during discharge and the overpotential of ohmic polarization by increasing the ion conductivity of electrolyte.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）