SEPARATION AND PURIFICATION TECHNOLOGY
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2015
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IF 3.091
Guangren Yu,Lin Zhang,Ibrahim A. Alhumaydhi,Ahmed A. Abdeltawab,Abdulaziz A. Bagabas,Hamid A. Al-Megren,Salem S. Al-Deyab,Xiaochun Chen
Ionic liquids (ILs) coupled with Ag + or Cu + salts to form a new kind of reactive absorbent have been studied to separate light olefin from paraffin recently. In this work, we prepared two halogen-free alkylimidazolium thiocyanate ILs with cheaper cuprous thiocyanate, i.e., [Bmim]SCN–CuSCN and [Emim]SCN–CuSCN (Bmim, 1-butyl-3-methylimidazolium; Emim, 1-ethyl-3-methylimidazolium) and investigated their absorption capability for propylene, propane and mixture of both at 1–7 bar and 298–318 K. The effects of operating parameter including cation nature, temperature, pressure, Cu + concentration and reuse of absorbent were investigated. Propylene shows a chemical absorption while propane does a physical one, and increasing Cu + concentration effectively improves the absorption capability for propylene and the selectivity of propylene/propane. [Bmim]SCN–CuSCN has higher absorption capability and selectivity for propylene than [Emim]SCN–CuSCN, e.g., [Bmim]SCN–CuSCN-1.5 M can absorb 0.12 mol of propylene per liter while 0.012 mol of propane per liter at 1 bar and 298 K, with a selectivity of 10, which is comparable to some other ILs-Ag + salts and better than pure ILs. Such absorbents can be regenerated through temperature and pressure swing without remarkable activity loss. This work shows that alkylimidazolium thiocyanate ILs with Cu + salts are promising reactive absorbents to separate propylene from propane.
研究领域:
化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
·
2020
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IF 1.687
Ibrahim A. Alhumaydhi,Rashid Abro,Shaukat Ali Mazari,Masroor Abro,Sabzoi Nizamuddin,Abdul Q. Memon,Guangren Yu
This work presented the preparation of two new systems comprised of ionic liquids (ILs), organic solvent, and cuprous salt. Consequently, their absorption ability was investigated for propylene (C 3 H 6 ) and propane (C 3 H 8 ) and their mixtures at 100 kPa-700 kPa pressure and 298 K-318 K temperature. Representative ILs were 1-butyl-3-methylimidazolium thiocyanate ([C 4 mim]SCN) and 1-ethyl-3-methylimidazolium thiocyanate ([C 2 mim]SCN). N,N-dimethylformamide (DMF) and cuprous thiocyanate (CuSCN) were selected for the absorption system. The effects of operating parameters like Cu + concentration, pressure, temperature, and recycling of ILs absorbency were examined and compared with the literature. It was observed that C 3 H 6 shows a chemical absorption while C 3 H 8 undergoes a physical one by [C 4 mim]SCN-DMF-CuSCN and [C 2 mim]SCN-DMF-CuSCN, and an increase in concentration of Cu + effectively improves the absorption capability for C 3 H 6 and the selectivity of C 3 H 6 /C 3 H 8 . Furthermore, [C 4 mim]SCN-DMF-CuSCN had higher absorption capability and selectivity for C 3 H 6 than [C 2 mim]SCN-DMF-CuSCN. [C 4 mim]SCN-CuSCN-2.0 M absorbed 0.637 mol of C 3 H 6 per litre while 0.16 mol of C 3 H 8 per litre at 700 kPa and 298 K, with a selectivity of 3.9. This work shows that new combination of organic solvent and ILs with Cu + salt is a new class of potential reactive absorbents to separate C 3 H 6 and C 3 H 8 .
研究领域:
化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
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2020
·Vol. 35
·期 1
·e6073
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IF 3.14
Jianyu Dong,Xiuling Chen,Fangyan Ji,Lixin Liu,Lebin Su,Min Mo,Jian-Sheng Tang,Yongbo Zhou
A simple and direct aerobic oxidative esterification reaction of arylacetonitriles with alcohols/phenols is achieved in the presence of a copper salt and molecular oxygen, which produces a broad range of aryl carboxylic acid esters in good to high yields. Copper salt plays multiple roles in the transformation, which allows the oxygenation of C H bond, cleavage of inert C C bond, and formation of C O bond in one pot without the assistance of any of the acids, bases, ligands, and so on. The reaction provides a simple, direct, and efficient protocol towards functionalized esters, especially aryl benzoates, from readily available starting materials.
研究领域:
有机化学
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合成化学
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2018
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IF 1.712
Xianghong Lu,Jiajian Zhu,Xing Qian,Jianbing Ji
Methyl linolenate was separated from its analogues by a new extraction system constructed by solvent, imidazolium based ionic liquids and cuprous salt. Firstly, the effect of ionic liquid on the dissolution of CuCl in acetonitrile , N , N -dimethylformamide (DMF), methanol and water was evaluated by visual observation. [C 4 Mim][Cl] can improve the dissolution of CuCl in acetonitrile. Then, for the new system as acetonitrile-ILs-CuCl, extraction equilibrium, distribution ratio and selectivity of methyl linolenate and its analogues were determined by gas chromatography analysis and the mass balance. The extraction time, IL structures and CuCl concentrations were investigated. Distribution ratio decreased slightly, but selectivity increased significantly with the addition of CuCl, [C 4 Mim][Cl] or [C 4 Vim][NTF 2 ] into acetonitrile. [C 4 Vim][NTF 2 ] had higher selectivity than [C 4 Mim][Cl]. But the selectivity of the system combining CuCl with [C 4 Vim][NTF 2 ] was much lower than with [C 4 Mim][Cl]. For the CuCl-[C 4 Mim][Cl]-acetonitrile, the extraction efficiency was better than CuCl-acetonitrile, increasing Cu + concentration effectively improved the separation selectivity when ratio of CuCl/[C 4 Mim][Cl] was less than 1. Compared with previous aqueous AgNO 3 extractions, the method of using CuCl is a much cheaper and practical way to enrich unsaturated fatty acid .
研究领域:
化学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2020
·
IF 7.539
Xiayuan Wu,Zhenzhen Tian,Zuopeng Lv,Zixuan Chen,Yongdi Liu,Xiaoyu Yong,Jun Zhou,Xinxin Xie,Honghua Jia,Ping Wei
This study investigated methane production and ARGs reduction during thermophilic AD of swine manure with the addition of different Cu salts (cupric sulfate, cupric glycinate, and the 1:1 mixture of these two salts). Results showed methane production was increased by 28.78% through adding mixed Cu salts. The mixed Cu group effectively reduced total ARGs abundance by 26.94%, suggesting mixed Cu salts did not promote the potential ARGs risk. The positive effects of mixed Cu salts on AD performance and ARGs removal might be ascribed to the low bioavailability. Microbial community analysis indicated the highest abundances of Clostridia _MBA03 and Methanobacterium in the mixed Cu group might cause the increased methane production. Spearman’s rank correlation analysis elucidated the succession in microbial community induced by environmental factors was the main driver for shaping ARGs profiles. Thus, mixed Cu salts could be an alternative to replace the inorganic Cu salt in animal feed additives.
研究领域:
环境科学
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微生物学
·
废物管理
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zhijie Liu,Xin Li,Hezhi Guo,Zekai Zhang,Yongchun Wang,Polun Pang,Yuting Gao,He Guo
This paper presents a novel type of Underwater Bubble Plasma-Divalent Copper Salt-Peroxymonosulfate (UBP-Cu(Ⅱ)-PMS) for the efficient degradation of emerging contaminants in water. The results demonstrate that Cu(Ⅱ)-PMS can be effectively activated during UBP treatment process, generating two highly reactive free radicals ( OH and · S O 4 _ ) that promote the degradation of high-concentration tetracycline hydrochloride (TC). A comparative analysis of UBP’s performance in activating persulfate (PS), PMS, and sulfite (S(IV)) for the synergistic degradation of TC revealed that PMS and UBP exhibited the strongest synergistic effect. When PMS is 0.5 g/L, the activation performance peaked, with the UBP-PMS system achieving an impressive 87.22 % degradation efficiency of TC within 20 min, which is 30.02 % higher than that of the single UBP system. Furthermore, upon introducing Cu(Ⅱ) into the UBP-PMS system, with PMS at 0.5 g/L and Cu(Ⅱ) at 0.05 g/L, the degradation efficiency of TC reached 95.73 %, and energy efficiency was measured at 1.5509 g·(kWh) −1 within 20 min, surpassing other treatment systems. Free radical trapping experiments indicated that the primary reactive species responsible for TC degradation in UBP-Cu(Ⅱ)-PMS co-catalytic strategy include OH, ONOOH/ · O 2 _ , · S O 4 _ and 1 O 2 . Fenton-like reaction enhances the concentration of OH in the solution, while oxygen-sulfur radical reaction produces · SO 4 \_ . The conversion between different valence states of Cu primarily involves electron transfer. Possible degradation pathways were proposed based on DFT calculations and LC-MS analysis during the synergistic treatment, and the toxicity of by-products generated during the degradation process was evaluated using T.E.S.T. software. Ultimately, a synergistic degradation mechanism for the UBP-Cu(Ⅱ)-PMS strategy was proposed. This study introduces a new activation strategy involving UBP-Cu(Ⅱ)-PMS and provides valuable insights into the degradation performance and mechanisms of emerging contaminants.
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2018
·
IF 1.712
Pengcheng Hu,Wei Jiang,Lijuan Zhong,Shufeng Zhou
The physicochemical properties of three different amide–AlCl 3 based ionic liquid (IL) analogues and their mixtures with copper salt, such as conductivity, viscosity, density and isobutane solubility were determined over a wide range of temperatures. The effects of amide structure, amide/AlCl 3 molar ratio and CuCl modification on these physicochemical properties were investigated. Results showed that the conductivity of amide–AlCl 3 based IL analogues was much lower than that of traditional Et 3 NHCl–AlCl 3 IL with same ligand/AlCl 3 molar ratio due to incomplete splitting of AlCl 3 , whereas the density and viscosity of amide–AlCl 3 based IL analogues were slightly higher. The viscosity of amide–AlCl 3 based IL analogues was closely related to the amide structure, and followed the order of DMA–AlCl 3 > AA–AlCl 3 > NMA–AlCl 3 with same amide/AlCl 3 molar ratio. Meanwhile, the density of amide–AlCl 3 based IL analogues ranked in the following order: AA–AlCl 3 > NMA–AlCl 3 > DMA–AlCl 3 . Increasing the amide/AlCl 3 molar ratio decreased the conductivity and density, while increased the viscosity. The solubility experiment indicated that the isobutane solubility in NMA–AlCl 3 was highest than that in two other IL analogues. Under the modification of CuCl, the conductivity, viscosity and density of these IL analogues increased, whereas the isobutane solubility decreased. These results provide the foundation for the development of a suitable IL analogue catalyst for isobutane alkylation .
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2023
·
IF 7.3
Congming Ding,Meini Yuan,Xiaochen Cao,Xuebin Tang,Yufeng Zhao,Wenqian Hao,Jiamiao Xie
Copper salt metal compounds are widely used in the field of supercapacitor electrode material due to their rich ionic groups. In this paper, NiCo(OH) 4 /Cu 2 (OH) 3 NO 3 electrode material is prepared by the solvothermal method by doping NiCo-based hydroxide with copper salt metal compounds (Cu 2 (OH) 3 NO 3 ). NiCo(OH) 4 /Cu 2 (OH) 3 NO 3 electrode material with different morphologies and sizes is prepared by adjusting the concentration of metal salts. When the metal salt concentration is 2 M, the prepared circular sheet NiCo(OH) 4 /Cu 2 (OH) 3 NO 3 electrode material with a diameter of 3 μm and a thickness of 150 nm exhibits excellent specific capacitance (1335 C g −1 at 1 A g −1 ) and capacitance retention (after 5000 cycles, the capacitance retention rate is 71.7 %). Furthermore, the NiCo(OH) 4 /Cu 2 (OH) 3 NO 3 //AC asymmetric supercapacitor is prepared, which exhibited an energy density is 83.78 Wh kg −1 at a power density of 800 W kg −1 . The capacitance retention rate of the asymmetric supercapacitor is 65.2 % (after 5000 cycles at 10 A g −1 ). We used copper salt metal compounds (Cu 2 (OH) 3 NO 3 ) to improve the electrochemical performance of NiCo-based hydroxide electrode material. This idea has certain reference significance for improving the performance of NiCo-based hydroxide electrode material.
研究领域:
材料科学
·
电化学
✓ 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）