JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2016
·
IF 1.835
Xiaohong Han,Zhangzhang Yang,Zanjun Gao,Wenjie Guan,Guangming Chen
Fluoroethane (HFC-161) is one of the most promising alternative refrigerants because of its excellent environmental and thermodynamic properties. It was considered as one of the most promising absorption working fluids in the absorption refrigeration. To make a better application of the refrigerant in absorption refrigeration systems, suitable absorbents should be selected for matching HFC-161. Vapor–liquid equilibrium (VLE) data is the key of the chemical engineering simulation and the refrigeration cycle calculation. On the basis of these, the vapor–liquid equilibrium data for the mixture of HFC-161 + dimethyl ether triethylene glycol were obtained at temperatures from 293.15 to 353.15 K by using a recirculation apparatus. The VLE data were then correlated by the Peng−Robinson (PR) equation of state combined with the modified Huron-Vidal first order (MHV1) mixing rule and nonrandom two liquid (NRTL) model. The experimental results had a good consistency with calculated values. Phase behaviors of HFC-161 combined with different absorbents were compared in this paper.
研究领域:
化学工程
·
制冷技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yuhang Guo,Zixun Tang,Zexu Li,Qian Wang,Yingying Fu,Zhiyuan Xie
Green solvent processing of perovskite light-emitting diodes (PeLEDs) is a necessity for their future commercialization. However, the almost insoluble nature of perovskites in most green solvents strongly impedes the progress of green solvent-processed PeLEDs. Here, a novel green solvent triethylene glycol (TEG) is used as the processing solvent for perovskites. TEG has better solubility for perovskite precursors than most reported green solvents. Moreover, it is found that the low vapor pressure of TEG solvent and stable precursor solution render a much wider time window for the so-called antisolvent treatment than that of perovskite precursor solution in commonly dimethyl sulfoxide. High-quality perovskite film can be readily synthesized with the antisolvent treatment at a time window of 70–100 s, and the resultant green PeLEDs demonstrate nearly identical light-emitting efficiencies. Together with further interface modification, the optimized green PeLEDs processed with TEG exhibit an external quantum efficiency of 20.4% and a maximal luminance over 38000 cd m −2 . It is the first successful attempt to fabricate high-efficiency PeLEDs utilizing green solvent and is enlightening for the development of high-performance PeLEDs prepared with eco-friendly solvents.
研究领域:
材料科学
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光电子学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2018
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IF 3.141
Shaobo Cao,Ping Liu,Liangliang Zhang,Baochang Sun,Haikui Zou,Guangwen Chu,Yong Luo,Jianfeng Chen
To ensure steady operation of gas transmission lines and meet the utilization specification of downstream processes, gas dehydration is employed in offshore natural gas production, where urgent demands for space and size exist. In this work, a rotating packed bed (RPB) was used to intensify the triethylene glycol (TEG) dehydration process and the effects of operating variables on the overall volumetric mass transfer coefficient (Kya) and height of mass transfer unit (HTU) were investigated. The value of HTU in a RPB was measured to be 4.3–7.9 mm, which was at least an order of magnitude lower than that in conventional columns, indicating the significant reduction in the size of the dehydration apparatus. The predicted Kya matches well with the experimental data, and the mean relative error (MRE) is only 6.68%.
研究领域:
化学工程
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2017
·Vol. 164
·期 6
·A1321
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IF 3.259
Chaolumen Wu,Taoran Li,Chenbo Liao,Qingkai Xu,Yuancheng Cao,Lei Li,Jun Yang
Triethylene glycol dimethyl ether (G3) is evaluated as an electrolyte solvent for non-aqueous lithium-oxygen (Li-O2) batteries. A liquid electrolyte of 1 M LiTFSI in G3 shows lower viscosity, higher oxygen solubility and diffusion, higher ionic conductivity and lithium ionic transference number compared to the conventional liquid electrolyte of 1 M LiTFSI in tetraethylene glycol dimethyl ether (G4). Then the Li-O2 battery using the G3-based electrolyte shows better cycling stability and higher rate capability compared to the battery using the G4-based electrolyte. At a higher current density of 2.5 A gcarbon−1, the discharge capacity of the battery using the G3-based electrolyte is about 1472 mAh gcarbon−1, which is about four times higher than that of the battery using the G4-based electrolyte. At current density of 1 A gcarbon−1 with a fixed capacity of 1000 mAh gcarbon−1, the battery using the G3-based electrolyte can be operated stably for 80 cycles, while only 20 cycles are achieved by using the G4-based electrolyte. Therefore, we think the G3-based electrolyte could be a proper alternative electrolyte to the conventional G4-based electrolyte for the development of Li-O2 batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Catalysts
·
2023
·Vol. 13
·期 6
·958
·
IF 3.9
Zhigang Wang,Cheng Liu,Fengxi Chen,Rong Chen
Semiconductor photocatalytic performances can be modulated through morphology modification. Herein porous hierarchical BiOBr microspheres (BiOBr-MS) of ~3 μm was firstly self-assembled without the assistance of a template via a facile solvothermal synthesis in triethylene glycol (TEG) at 150 °C for 3 h. KBrO3was exploited as a bromine source, which slowly provided bromide ions upon reduction in TEG and controlled the growth and self-assembly of primary BiOBr nanoplates. The addition of PVP during solvothermal synthesis of BiOBr-MS reduced the particle size by about three-fold to generate BiOBr sub-microspheres (BiOBr-sMS) of <1 μm. BiOBr-sMS exhibited significantly higher photocatalytic activity than BiOBr-MS for aerobic photooxidation of benzyl alcohol (BzOH) to benzaldehyde (BzH) under simulated sunlight irradiation (conversions of BzOH (50 mM) over BiOBr-sMS and BiOBr-MS were, respectively, 51.3% and 29.6% with 100% selectivity to BzH after Xenon illumination for 2 h at 25 °C). The photogenerated holes and ·O2−were found to be main reactive species for the BzOH oxidation over BiOBr spheres by scavenging tests and spin-trapping EPR spectra. The higher photocatalytic activity of BiOBr-sMS was attributed to its more open hierarchical structure, efficient charge separation, more negative conduction-band position and the generation of larger amounts of ·O2−.Keywords:BiOBr spheres;hierarchical nanostructures;photocatalysis;benzaldehyde
研究领域:
材料科学
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化学工程
·
环境科学
·
光化学
✓ 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）