INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2021
·
IF 3.764
Luo Wu,Rui Zhang,Yaning Zhang,Haiyan Liu,Zhichang Liu,Chunming Xu,Xianghai Meng
Aluminum species in AlCl3–arene and AlCl3–CuCl–arene solutions (including benzene, toluene, o-xylene, m-xylene, p-xylene, and mesitylene) were investigated using 27Al NMR and infrared (IR) spectroscopy. The AlCl3·arene and Al2Cl6·arene complexes were demonstrated experimentally. AlCl3 could not coordinate with benzene and toluene at a low temperature (40 °C) but could form complexes at a high temperature (80 °C). AlCl3 could coordinate with xylene and mesitylene to form Al2Cl6·arene complexes at both low and high temperatures (40 and 80 °C). As for AlCl3–CuCl–arene solutions with a molar ratio of 1:1:2, two signals were observed in 27Al NMR spectra. The signal at around 101 ppm was assigned to CuAlCl4·2arene complexes, and the other signal at around 96 ppm belonged to AlCl3·arene complexes. The characteristic peaks of AlCl3–CuCl–arene solutions in IR spectra moved toward the low field due to the strong π-back-bonding. The CuAlCl4·2arene complexes would convert to CuAl2Cl7·2arene complexes with a further increase in AlCl3 content when the molar ratio of AlCl3/CuCl exceeded 1. The synthesis mechanism of AlCl3–CuCl–arene solutions was analyzed by in situ Fourier transform IR (FTIR) spectroscopy. Three reaction pathways originating from different aluminum species were proposed.
研究领域:
化学
·
材料科学
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高影响因子
Catalysts
·
2025
·Vol. 15
·期 3
·279
·
IF 4
Duozhen Chai,Chongli Wang,Jinzhen Liu,Dongfeng Cao,Kaixuan Guo,Yuankun Wang,Ye Yuan,Francis Verpoort
The cyclization of propargyl alcohols with CO2represents a highly significant method for the utilization of CO2. The resulting cyclic carbonates possesses high chemical value and hold great potential for applications in battery electrolytes, polymer precursors, and pharmaceutical intermediates. However, most existing reports on this cyclization have been limited to simple propargyl alcohol substrates that are substituted with inert alkyl, cycloalkyl, and phenyl groups. For functionalized propargyl alcohols, such as alkyne-1,2-diols, only a single report has been documented thus far. In this study, we have developed an innovative catalytic system comprising cost-effective copper salts and environmentally friendly ionic liquids (CuCl/1-ethyl-3-methylimidazolium acetate) for the cyclization of alkyne-1,2-diols with CO2. Compared to the previously reported AgF/bulky monophosphine ligand (BrettPhos) system, our system is free of traditional volatile solvents, phosphine ligands, and additives. Notably, this is the first reported Cu(I)-catalyzed system for this cyclization, offering significant advantages in terms of cost-effectiveness and reduced toxicity compared to silver salts. Moreover, the use of ionic liquids ensures considerable recyclability, further enhancing the sustainability and practicality of this approach.
研究领域:
化学
·
环境科学
·
材料科学
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高影响因子
INORGANIC CHEMISTRY
·
2021
·
IF 5.165
Heng-Zhi Liu,Bo Li,Haiqiang Luo,Xiaohang Qiu,Jian-Gong Ma,Peng Cheng
Metal–organic frameworks (MOFs) represent an ideal platform for the construction of highly active composite catalysts. However, loading metastable and/or multicomponent metal compounds into MOFs remains a synthetic bottleneck due to the great challenge of keeping the guest and matrix intact during the preparation of a composite. In this work, we develop a new impregnation reduction surface modification (IRSM) strategy to give a new composite catalyst CuCl@MIL-101(Cr), which is successfully postmodified by in situ construction of CuII defects on the surface of loaded CuCl inside MOF pores, leading to the new composite material CuII/CuI@MIL-101(Cr). The new dual-component composite catalyst exhibits a hierarchical structure and superior catalytic activity in C–C homocoupling of arylboronic acids under green conditions. This study presents a facile strategy for improving the catalytic activity by constructing defects on the surface of MOF-based catalysts as well as for forming multiple-component composite materials.
研究领域:
材料科学
·
催化化学
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Qiang Guo,Yu Qiao,Yonghou Xiao,Yi Pan,Yushan Li,Xu Liu,Gaohong He
Cuprous ion modified molecular sieves have been considered as promising CO adsorbents in gas separation or purification industry. However, it persists as a significant challenge to overcome the unfavorable effect of water vapor in the work environment on gas adsorption and separation. Herein, we propose a synthetic strategy using rare earth element La as an additive to form La O La coordination bonds followed by surface silanization treatment to construct a hydrophobic Si O Si barrier to significantly improve the stability of Cu + under humid atmosphere. By successively introducing La 3+ and Cu + into zeolite 5A, CuCl/LaA adsorbents were prepared via ion exchange and solid dispersion methods. And then by silanization modification using toluene as solvent and butyltrichlorosilane (BTS) as hydrophobic agent, hydrophobic CuCl/LaA-BTS adsorbents were prepared. Dynamic adsorption investigation demonstrated that the as-prepared CuCl/LaA-BTS adsorbents possessed hydrophobic surface and consequently the adsorption capacity of CO was enhanced significantly under humid atmosphere. The CO adsorption breakthrough capacity over CuCl/LaA-BTS attained 0.34 mg/g, which was 5.7 times higher than that of zeolite 5A at 40 °C, atmospheric pressure and a relative humidity of RH = 55 %. Moreover, the CO adsorption capacity of CuCl/LaA-BTS retained 0.31 mg/g after four cycle regenerations. This work provides an effective and novel route for synthesizing highly stable cuprous ion modified zeolite adsorbents.
研究领域:
材料科学
·
气体分离技术
·
表面改性
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yuanxiang Zhang,Tianlong Huang,Maosheng Cui,Xiaoxiao Wang,Zhen Mu,Mengting Yuan,Zilu Wei,Meng Yuan,Yanwei Sui,Jiqiu Qi,Yang Zhang,Xiaolan Xue
Although rechargeable magnesium batteries (RMBs) represent a promising post‑lithium energy storage technology, the formation of a non-conductive Mg 2+ passivation layer on Mg anodes remains a significant challenge. Here, we develop a novel all-inorganic electrolyte with low overpotential for Mg plating/stripping by introducing electrochemical active CuCl into a MgCl 2 /THF solution (MgCl 2 -CuCl/THF). During cycling, a multi-functional interface layer composed of Cu and Cu x Mg y Cl z is formed in situ on the Mg anode surface, which not only promotes MgCl 2 salt dissociation but also offer rapid-electron transport pathways. Moreover, the Cu + with reversible redox nature in Cu x Mg y Cl z can accommodate and release Mg 2+ ions, thereby facilitating rapid and homogenous Mg 2+ deposition. Consequently, the optimized MgCl 2 -CuCl/THF electrolyte enables Mg//Mg symmetric cells to cycle stably for over 1300 h at 0.5 mA cm −2 , with an overpotential as low as 0.15 V (vs. Mg 2+ /Mg). Furthermore, excellent Mg electro-plating/stripping properties have also been demonstrated in Mg//Mo, Mg//Cu, and Mg//SS asymmetric cells, achieving nearly 100 % Coulombic efficiency and stable cycling for over 138, 138, and 55 days, respectively. This work provides a promising strategy for the design of high-performance electrolyte systems for advanced RMBs.
研究领域:
储能
·
电化学
·
电池技术
·
材料科学
·
无机化学
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DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2021
·Vol. 24
·期 1
·384-393
·
IF 10.182
Qi Zhang,Shouxin Liu,Xia Tian,Yidong Liu,Shiming Fan,Baibiao Huang,Andrew Whiting
A highly selective, green and sustainable chlorination of aliphatic C–H bonds is reported using MCln under the co-catalysis of visible light and nano-Cu@CuCl, which was synthesised via a one-step, hydrothermal strategy using copper(II) sulfate and D-glucose as the reducing agent in a KCl solution. A novel cascade method of producing Cl2 occurs in situ chlorinating C(sp3)–Hs, achieved through nano-Cu@CuCl catalysis using inorganic chloride MCln as a chlorine source under visible light and without the need for a strong oxidant. The reaction was applied to the chlorination of different alkylarene α-Hs and cyclic hydrocarbons C–HS and was developed for use in a photocatalytic serial reactor system which accomplished the chlorination of toluene α-Hs to give 92% conversion, 90% yield and 98% selectivity. Electron spin resonance (ESR) studies of DMPO-Cl. revealed that the reaction mechanism belonged to a free radical process.
研究领域:
有机化学
·
绿色化学
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材料科学
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DOI
高影响因子
Chemistry-Switzerland
·
2025
·Vol. 7
·期 4
·114
·
IF 2.4
Wancheng Zhao,Fangquan Xia,Dong Tian
As the crucial current collector for lithium-ion batteries (LIBs), electrolytic copper foils are generally manufactured by electrodeposition in acidic copper sulfate solution. However, there are many disadvantages for traditional electrolytic copper foils, such as coarse grains, insufficient mechanical properties, and high energy consumption. In order to improve the performances of electrolytic copper foil, a novel cuprous electrodeposition system was developed in this study. A soluble cuprous coordination compound was synthesized. In addition, XPS, FT-IR spectrum, as well as single-crystal X-ray diffraction illustrated that thiourea coordinated with Cu(I) through S atom and therefore stabilized Cu(I) by the formation of CuCl·3TU. Importantly, the corresponding electrochemical behaviors were investigated. In aqueous solution, two distinct reduction processes were demonstrated by linear sweep voltammetry (LSV) at rather negative potentials, including the reduction of adsorbed state and non-adsorbed state. Moreover, the observed inductive loops in electrochemical impedance spectroscopy further confirmed the adsorption phenomenon. More significantly, the designed cuprous electrodeposition system could contribute to low energy consumptions during electrolysis. and produce ultrathin nanocrystalline copper foils with appropriate roughness. Consequently, the electrolysis method based on CuCl·3TU could provide an improved approach for copper foils manufacturing in advanced LIBs fabrication.
研究领域:
电化学
·
材料科学
·
储能技术
·
电池技术
·
金属电沉积
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DOI
高影响因子
CRYSTENGCOMM
·
2015
·Vol. 17
·期 42
·8113-8118
·
IF 4.034
Liao Chen,Tao Ye,Xinyi Jin,Jie Ren,Boning Huang,Zhi-Kang Xu,Hongzheng Chen,Hanying Li
Crystallization in gel media has been occasionally found to result in single crystals with gel networks incorporated inside, extending the gel method with a long history for crystallization into a platform to design the internal composite structures of a crystal. The limited number of gel-incorporated crystals has inspired the investigation on how general gel incorporation is. Crystallization in gels through decomplexation has been widely used to grow crystals with extremely low water solubility, while whether the gel networks are incorporated inside these crystals has not been studied. In this work, crystals of AgCl, AgI and CuCl have been grown in both agarose gels and silica gels by decomplexation. The crystallographic structures of the crystals were identified by powder and/or single X-ray diffraction. The internal hybrid structures were studied by examining the residue materials after gentle etching and complete dissolution of the crystals. When grown from agarose gels containing self-assembled fibrous structures, gel networks were incorporated into single crystals of all the three compounds. In sharp contrast, the gel networks were pushed away when the crystals were grown in silica gels. The discrepancy between the crystals grown from agarose gels and those from silica gels is consistent with the effect of gel strength on gel incorporation. This work may help to harvest gel-incorporated crystals.
研究领域:
晶体学
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材料科学
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DOI
高影响因子
MATERIALS LETTERS
·
2025
·
IF 2.7
Ying Chen,Chang Liu,Mengxue Hu,Qingfang Li,Jing Su
In this work, KCuCl₃ and K₂CuCl₄·2H₂O crystals were synthesized via a solution evaporation method. Their crystal structures were verified by XRD, while the (110) interplanar spacing of K₂CuCl₄·2H₂O was further identified by HRTEM and the corresponding SAED. Thermal behavior was examined using TG/DSC. Both compounds exhibit reversible discoloration in response to temperature (20–100 °C) and humidity (0–80 % RH). UV–Vis absorption reveals band gaps of 3.05 eV for KCuCl₃ and 3.09 eV for K₂CuCl₄·2H₂O. PL spectra show blue-green emission, with CIE coordinates indicating a warmer hue for K₂CuCl₄·2H₂O, primarily attributed to the Cu 2+ centers. The strong light absorption and efficient PL response of these halides highlight their potential for humidity sensing and luminescent device applications.
研究领域:
材料科学
·
无机化学
·
光学材料
·
晶体学
·
传感器技术
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高影响因子
Journal of Materials Research and Technology-JMR&T
·
2025
·
IF 6.6
Chen Sang,Juan Qiu,Boyu Yuan,Kaiyu Zhang,Nan Huang,Qinghong Wang,Houyi Ma,Liang Li,Chao Wang
Inhibition effects of an γ-(2,3-epoxypropoxy) propyl-trimethoxy-silane (abbreviated as epoxy-silane) and 3,6-Dioxa-1,8-octanedithiol (abbreviated as DOT) film on copper corrosion in 3.5 wt% NaCl solution were studied by digital hsolography, electrochemical methods and surface characterization approaches. In-situ observation of the concentration change at the electrode/electrolyte interface during dynamic potential scan by holography revealed that the dissolution of copper was inhibited significantly and no CuCl film formation was found on the surface of the modified film. Sputtering measurements by X-ray photoelectron spectroscopy showed that some Cl − ions permeated into the outer layer of the epoxy-silane/DOT film and formed CuCl interlayer with the Cu + ions in the film. The CuCl interlayer in the modified film blocked its micropores, inhibiting the copper corrosion. The initial electro-dissolution reactions on bare copper and modified copper have been discussed accordingly. The study proved the digital holography to be an effective method to evaluate anti-corrosion performance and elucidate the related mechanisms in particularly.
研究领域:
材料科学
·
电化学
·
表面工程
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DOI
高影响因子
ACS Applied Nano Materials
·
2026
·Vol. 9
·期 29
·13860-13868
·
IF 5.8
Li Bingshuang,Li Xin,Huang Xiaoxi
The
electrochemical CO 2 reduction reaction (CO 2 RR)
to produce multicarbon products represents a promising route
for sustainable carbon utilization. Copper-based catalysts are unique
in catalyzing C–C coupling, but the active Cu + species,
which favor ethylene formation, are prone to reduction during reaction.
In this work, we demonstrate that halogen doping, combined with a
nanoconfinement strategy, effectively stabilizes Cu + within
a nanoporous carbon matrix. Two model catalysts supported on porous
carbon spheres (Cu@C-1 derived from CuCl 2 and Cu@C-2 from
CuSO 4 ) were synthesized. After calcination, Cu@C-1 predominantly
comprises CuCl while Cu@C-2 mainly consists of Cu 2 O with
trace sulfur doping. They both have a similar average copper oxidation
state. During the CO 2 RR at −1.3 V versus the RHE,
the Cu@C-1 nanocatalyst achieves selective ethylene production with
a Faradaic efficiency (FE) of 41.5% and a partial current density
of 110.7 mA cm –2 whereas the Cu@C-2 nanocatalyst
primarily generates methane (FE of 49.5% and partial current density
of 124.4 mA cm –2 ). In situ and postreaction characterizations
reveal that nanoscale confinement in Cu@C-1 maintains its CuCl phase
under the reaction conditions, which promotes the *COCHO intermediate
and facilitates C–C coupling toward ethylene. Conversely, Cu@C-2
nanoparticles are reduced to metallic Cu 0 , favoring the
methane pathway. This work highlights that tailoring the precursor
anion offers a precise level of control over the initial copper phase
and its dynamic state under electrolysis, thereby steering the CO 2 RR selectivity toward the desired products.
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高影响因子
FUEL
·
2016
·
IF 3.611
Pengcheng Hu,Yadong Wang,Xianghai Meng,Rui Zhang,Haiyan Liu,Chunming Xu,Zhichang Liu
Alkylate is an ideal blending component for motor gasoline. The alkylation of isobutane with 2-butene to produce high-quality alkylate was catalyzed by several amide-AlCl 3 -based ionic liquid (IL) analogues with different structures and CuCl modification. The influences of the amide structure, amide/AlCl 3 molar ratio, and CuCl modification on the catalytic performance were investigated in an autoclave operated in semicontinuous mode. Results showed that the N -methylacetamide-AlCl 3 -based IL analogue (molar ratio of N -methylacetamide to AlCl 3 was 0.75, marked as 0.75NMA-1.0AlCl 3 ) with bidentate coordination and low viscosity was an efficient catalyst for isobutane alkylation. Furthermore, CuCl modification further enhanced the catalytic performance of 0.75NMA-1.0AlCl 3 . The selectivity of C8 increased from 76.18 wt% to 94.65 wt%, in which the molar ratio of trimethylpentanes to dimethylhexanes (TMPs/DMHs ratio) and the research octane number (RON) of alkylate reached up to 14.98 and 98.40, respectively. The effects of reaction conditions on the alkylation performance were investigated in an autoclave operated in batch mode. The results indicated that the alkylation of isobutane with 2-butene catalyzed by CuCl-modified 0.75NMA-1.0AlCl 3 was a short-time and fast reaction. The optimal reaction temperature, reaction time, stirrer speed, and isobutane/2-butene molar ratio were 15 °C, 30 s, 1500 r/min, and 100:1, respectively. Under these optimal reaction conditions, the selectivity of C8, TMPs/DMHs ratio, and RON were 84.10 wt%, 14.86, and 96.54, respectively.
研究领域:
化学工程
·
催化科学
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产品关联
DOI
高影响因子
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