JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2017
·
IF 2.323
Hai Liu,Xuemin Yu,Peng Cui,Midong Shi,Kun Xin,Yingmin Yu,Qingsong Li
Liquid–liquid equilibria provide fundamental data for designing and simulating a proper extraction process. The aim of this work is to extract cyclohexanone from wastewater using appropriate solvents. Liquid–liquid equilibrium experimental results were measured for water + cyclohexanone + benzene or methyl isobutyl carbinol ternary systems at 303.15 and 323.15 K under 101.3 kPa. The distribution ratios as well as selectivity values were calculated according to the experimental data to assess the extracting behaviors of the selected solvents. The selectivity value has a slight decrease with the increasing temperature from 303.15 to 323.15 K, which indicates that temperature has an adverse effect and the low temperature is more suitable for extraction. Besides, the consistency and reliability of the obtained experimental results were ascertained by applying both the Hand and Bachman equations. The obtained experimental tie-line data fitted well with the nonrandom two-liquid and universal quasichemical activity coefficient models, yielding root-mean-square deviation (rmsd) values as low as 0.17 and 0.16 for the two models, respectively.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2016
·Vol. 28
·期 1
·487-492
·
IF 1.798
Zhang Xinxiu,Liu Jinsong,Zhu Kongjun,Wang Jing,Li Ziquan,Qiu Jinhao
High-quality lead-free piezoelectric x Mn-doped (K 0.48 Na 0.52 ) 0.985 Li 0.015 NbO 3 films (KNLN; x = 0, 0.01, 0.02, 0.03) were successfully deposited onto Pt(111)/Ti/SiO 2 /Si(100) substrates by sol–gel method. Effects of Mn substitution on the microstructure, dielectric properties, ferroelectric properties, and leakage current of the KNLN films were investigated in detail. Mn-doping can significantly improve the ferroelectric properties and decrease the leakage current of KNLN films. Optimal dielectric properties were obtained in films doped with 2 mol% Mn, whose dielectric constant and dielectric loss at 1 kHz were 875 and 0.030, respectively. In addition, well-saturated ferroelectric P - E hysteresis loop with large remanent polarization (2 P
r ) and coercive field ( E
c ) of 22.5 μC/cm 2 and 65 kV/cm were obtained in 2 mol% Mn-doped KNLN film at an applied electric field of 200 kV/cm.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2010
·
IF 1.695
Xueqiao Xie,Juan Han,Yun Wang,Yongsheng Yan,Guowu Yin,Weisheng Guan
Experimental liquid−liquid equilibrium (LLE) binodal curves, tie-lines, and plait points were obtained for the PPG400 + salt (K3PO4, K2CO3, and K2HPO4) + H2O systems at T = 298.15 K. The Merchuk equation was used to correlate the binodal data of the investigated systems. Also, the effect of salt on the phase-forming ability has been studied based on the effective excluded volume (EEV) values from fitting the binodal data to the binodal model developed by Guan, and the salting-out abilities of the anions are in the order of PO43− > HPO42− > CO32−, which may be related to the Gibbs free energy of hydration of the ions (ΔhydG). Furthermore, tie-line compositions were correlated using the Setschenow-type, Othmer−Tobias, and Bancroft equations, and the parameters are reported.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yujie Yang,Linlin Wang,Suyuan Zeng,Kangning Zhao,Qian Wu,Li Yan,Haoyu Tian,Zheng Jiao,Jiujun Zhang
Building a proper flexible electrode with high cycling stability, rate capacity and initial coulombic efficiency (ICE) for flexible potassium-ion batteries (PIBs) remains a challenge. Herein, nitrogen/phosphorus co-doped carbon coated FeP nanorods arrays on carbon cloth (FeP@N, P C NRs/CC) as high-rate capable flexible self-supporting anode was successfully fabricated. The composite electrode combines the advantages of FeP nanorods arrays (FeP NRs), carbon cloth (CC) and N, P co-doped carbon shell (N, P–C), which comprehensively improves the electrochemical stability of the flexible electrode, while the open space between FeP nanorods can facilitate electrolyte impregnation and enhance K + transfer, thus effectively elevating the corresponding rate capability. For the FeP@N, P C NRs/CC electrode, it delivers a reversible capacity of 388.8 mA h g −1 at 0.5 A g −1 up to 400 cycles. Even at 1.5 A g −1 , it can still achieve a remarkable rate capacity of 346.9 mA h g −1 . Moreover, the assembled soft-packed cell can always light the LED lights when it is bent at different angles, which exhibits excellent mechanical flexibility.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2021
·
IF 2.694
Lixia Yang,Yuexia Han,Zhen Jiao
To obtain the basic data for the recovery of 1-methylimidazole from wastewater by extraction, the ternary liquid–liquid phase equilibrium data of the water (1) + 1-methylimidazole (2) + 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF6]) (3) system were determined using an equilibrium autoclave at the temperatures of 303.15 to 323.15 K and 101.32 kPa. The solute distribution coefficient (D) and the selectivity (S) of the ternary system were calculated in accordance with the experimental data. Their values were up to 1.39 and 41.17, respectively, which showed that the ionic liquid can extract 1-methylimidazole effectively. The experimental results showed that the temperature had a slight effect on the liquid–liquid equilibrium behavior. Meanwhile, the calculated results revealed that the selectivity coefficient decreased with the enhancing concentration of 1-methylimidazole in the ternary system and the increasing temperature. In addition, the nonrandom two liquid (NRTL) model was used for correlation of the ternary systems. The root-mean-square deviation value of 0.0218 indicated that the calculated results using the model were in good agreement with the experimental data and were reliable to apply to practice.
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CRYSTAL GROWTH & DESIGN
·
2021
·
IF 4.076
Tong Yu,Lin Xiong,Xiaomeng Liu,Yi-Chang Yang,Zheshuai Lin,Li-Ming Wu,Ling Chen
Deep-ultraviolet (deep-UV) nonlinear optical (NLO) phosphates have become a continuing hot spot since the discovery of Ba3P3O10X. Herein, we report two new deep-UV NLO phosphates, KZn(PO3)3 and RbZn(PO3)3, crystallizing in the asymmetric R3 (No. 146) space group with a three-dimensional (3D) network constructed by [PO3]∞ chains and distorted C3v [ZnO6] octahedra. Both compounds exhibit phase-matchable behaviors with relatively strong powder SHG intensities (about 0.6× and 0.7× those of the benchmark KDP) and short deep-UV cutoff edges (<200 nm). First-principles calculations reveal the synergy of the distorted [ZnO6] octahedron and the flexible [PO3]∞ chain that contribute respectively to the d16 value by 14 and 84% in KZn(PO3)3 or 6 and 93% in RbZn(PO3)3. Remarkably, the SHG-active [ZnO6] herein is pointed out for the first time, which offers an unconventional access to the design and searches for deep-UV NLO material candidates.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yige Chen,Qiaoyu Huang,Man Zhou,Yong Hu,Yuhong Zhang,Xueliang Jiang,Zhaoxia Chen
Conductive hydrogels have demonstrated great potential in flexible wearable sensors due to their excellent flexibility and conductivity. Nevertheless, traditional hydrogels suffer from limitations such as weak mechanical properties, inadequate fatigue resistance, and lack of recyclability, which have hindered their practical applications. In this study, a polyvinyl alcohol/polyacrylamide/κ-carrageenan-Ca 2+ /K + (PPK-Ca 2+ /K + ) composite hydrogel was developed by constructing a dynamic network structure involving hydrogen bonds, electrostatic interactions, and synergistic co-crosslinking of Ca 2+ /K + . The resulting ionic conductive hydrogel exhibited remarkable stretchability (~ 414 %), high tensile strength (1190 kPa), and excellent fatigue resistance. Benefiting from the negatively charged κ-carrageenan and the ion transport co-regulation by Ca 2+ /K + , the hydrogel achieved a high ionic conductivity of 7.26 mS/cm. Moreover, owing to the thermoreversible properties of κ-carrageenan and PVA, the hydrogel material could be recycled through high-temperature remolding processes. The flexible sensor assembled with PPK-Ca 2+ /K + hydrogel demonstrated high sensitivity, a broad detection range (0–400 %), and rapid response time (152 ms), enabling precise monitoring of various human activities, ranging from large joint movements to subtle muscle contractions. The proposed fabrication strategy for robust, fatigue-resistant, self-healing, and recyclable conductive hydrogel provides new insights for developing high-performance wearable sensors and electronic skin.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2024
·
IF 2
Caixiong Quan,Yi Hua,Liwei Zhuang,Xiaowang Wu,Yifa Du,Ruyi Lin,Yong Ma,Qingfen Meng,Lingzong Meng
The solid-liquid equilibria of the quinary system LiCl–NaCl–CaCl2–H3BO3–H2O with sodium chlorine saturated at 323.15 K were studied by the isothermal dissolution equilibrium method. Based on the measured experimental solubility data, the dry-salt phase diagram, water content diagram, and sodium chloride content phase diagrams were plotted. The dry-salt phase diagram in this system consists of one invariant point saturated with LiCl·H2O, CaCl2·2H2O, and H3BO3, three univariant curves, and three crystallization regions saturated with NaCl corresponding to CaCl2·2H2O, LiCl·H2O, and H3BO3. No solid solution was found in the system. The areas of crystallization zones increase according to the above order. The Jänecke index of H2O and NaCl and the refractive index change regularly with the Jänecke index of LiCl. The calculated refractive indices agree well with the experimental data using the semiempirical equation. These results on phase diagrams of the quinary system can supply theoretical references for lithium salts and boric acid separation from calcium chloride-type brine.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2015
·
IF 2.037
Xiaopo Wang,Xiaojie Wang,Bo Song
Experimental density and viscosity data for binary mixtures of 2,2,4-trimethylpentane with 1-propanol, 1-pentanol, 1-hexanol, and 1-heptanol at atmospheric pressure over the entire composition range at temperatures from (298.15 to 323.15) K are reported. Excess molar volumes and viscosity deviations of the mixtures were calculated from the experimental data and correlated using the Redlich–Kister equation. The optimized sets of parameters of the equation at each temperature were obtained by the least-squares method.
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INORGANIC CHEMISTRY
·
2021
·
IF 5.165
Man-Man Chen,Sheng-Hua Zhou,Wenbo Wei,Xin-Tao Wu,Hua Lin,Qi-Long Zhu
Despite the fact that nonlinear optical (NLO) crystals such as AgGaS2 and AgGaSe2 have been widely used in the infrared (IR) range due to their large second harmonic generation (SHG) coefficients and wide range of IR transparency windows, the small laser-induced damage threshold (LIDT) remains a great issue hindering their high-power applications. Herein, three noncentrosymmetric (NCS) chalcogenides AZn4Ga5Se12 (A = K, Rb, or Cs) are successfully obtained through an appropriate flux method after the extensive design and synthesis of the A/Zn/Ga/Q system. Single-crystal X-ray diffraction data demonstrate that they adopt trigonal space group R3 (No. 146) with three-dimensional diamond-like frameworks composed of [M9Se24] layers (M = Zn or Ga) stacking in the same direction and filled by charge-balancing A+ cations. Noticeably, they all exhibit strong powder SHG responses (2.8–3.7 × AgGaS2) and amazing LIDTs (19.2–23.4 × AgGaS2). In addition, theoretical calculations are performed to further determine the relationship between NCS structures and NLO properties. This work provides effective solutions for overcoming the trade-off between strong SHG and high LIDT in IR-NLO materials.
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NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.5
Haozhen Liu,Shiyu Du,Paipai Zhang,Jiawei Zhao,Yanna Chen,Donghai An
A high-performance ultraviolet (UV) nonlinear optical (NLO) material requires three essential characteristics: a short UV absorption edge, a strong secondharmonic generation (SHG) response, and favorable NLO coefficients. In this study, a novel rare-earth borate compound with the formula K 7 MgY 2 (B 5 O 10 ) 3 was successfully synthesized using a high-temperature solution method combined with chemical cosubstitution. The crystal adopts a non-centrosymmetric (NCS) structure (space group R32) and exhibits an SHG intensity 1.3 times that of potassium dihydrogen phosphate (KDP) under 1064 nm laser irradiation. Its UV cutoff edge is determined to be 290 nm, demonstrating exceptional potential for UV optical applications. Combined experimental and theoretical analyses reveal that the synergistic interplay between polarizable [B 5 O 10 ] groups and heterovalent K + /Mg 2+ /Y 3+ substitution underpins its superior NLO performance.
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Yuhang Chen,Long Cheng,Zhao Lei,Yuqi Su,Maogang He,Ying Zhang
Transport properties, including thermal diffusivity and the Fick diffusion coefficient, are key parameters for optimizing chemical processes and ensuring production safety. In this work, the thermal diffusivity and Fick diffusion coefficient of the n–heptane + n–decane binary mixture were measured by dynamic light scattering at n–heptane amount fractions from 0.25 to 0.75. Measurements were performed along five isobars at 0.1, 2.5, 5.0, 7.5, and 10 MPa. Thermal diffusivity was determined over 298.15–523.15 K, except at 0.1 MPa, where the temperature range was limited to 298.15–373.15 K, while Fick diffusion coefficients were obtained from 298.15 to 373.15 K. The relative expanded uncertainties in thermal diffusivity and Fick diffusion coefficient were estimated to be 0.094 and 0.146, respectively, at a confidence level of 0.95 (k = 2). The effects of temperature, pressure, and composition on thermal diffusivity and Fick diffusion coefficient were analyzed, aiming to offer guidance for optimizing the design of industrial processes and ensuring operational safety and reliability.
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