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Your search keyword '"Zheng, Xiao-Tao"' showing total 30 results
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30 results on '"Zheng, Xiao-Tao"'

8. A New Method for Predicting the Hydrocyclone Efficiency with the Light Dispersed Phase

Author

Lu Xia, Wang Wei, Zheng Xiao-tao, Yu Jiu-yang, and Lin Wei

Subjects
Hydrocyclone, Materials science, Inlet velocity, 02 engineering and technology, Function (mathematics), Mechanics, 021001 nanoscience & nanotechnology, Residence time (fluid dynamics), Physics::Fluid Dynamics, 020401 chemical engineering, Volume (thermodynamics), Breakage, Dimension (vector space), Phase (matter), 0204 chemical engineering, 0210 nano-technology, Simulation
Abstract

In this study, a new method for predicting the hydrocyclone efficiency with the light dispersed phase has been developed. The equivalent volume method is employed to simplify the effective region of the hydrocyclone into a cylindrical shape, the influence of structural complexity on the method is reduced. Based on the analysis of the dispersed phase droplets and the assumption of determining the droplets been separated, a residence time model of the droplets in the effective separating region is theoretically developed. This method can be expressed as a simple function including the cyclone dimension and operating parameters. By compared with the previous experimental data, it is showed that the calculated value is close to the experimental value when the separation rate is more than 10%. When inlet velocity is not too large, cause the dispersed phase droplet breakage is not obvious, the applicability of this method is better.

Published
2017

30. Systematic assembly of {LnMnIII4} appended cubanes with inorganic polyoxometalate ligands and their electrocatalytic property.

Author

Chen, Yi-Zhen, Liu, Zhu-Jun, Zhang, Zhi-Ming, Zhou, Huan-Yu, Zheng, Xiao-Tao, and Wang, En-Bo

Subjects
*MOLECULAR self-assembly, *CUBANES, *INORGANIC compounds, *POLYOXOMETALATES, *LIGAND analysis, *ELECTROCATALYSIS, *REACTIVITY (Chemistry)
Abstract

Exploration of the reactivity of the versatile polyoxometalate precursor [β2-SiW11O39]8− with lanthanide cations, transition-metal cations, carbonate, and morpholine, afforded a group of new appended cubanes {LnMnIII4} (Ln=HoIII, TmIII, YbIII, SmIII, GdIII, ErIII and CeIV). The appended cubanes {LnMnIII4} were encapsulated by two inorganic polyoxometalate ligands, resulting in a series of heterometallic cluster-based sandwich-type compounds: K10Na3[{LnIIIMnIII4(μ3-O)2(μ2-OH)2(H2O)(CO3)}(β-SiW8O31)2]·xH2O (Ln=HoIII, x=24 for 1; Ln=TmIII, x=22 for 2; Ln=YbIII, x=21 for 3); K7Na6[{LnIIIMnIII4(μ3-O)2(μ2-OH)2(H2O)(CO3)}(β-SiW8O31)2]·xH2O (Ln=SmIII, x=22 for 4; Ln=GdIII, x=20 for 5; Ln=ErIII, x=22 for 6) and K7Na5[{CeIVMnIII4(μ3-O)2(μ2-OH)2(H2O)(CO3)}(β-SiW8O31)2]·24H2O (7), which were characterized by single-crystal X-ray diffraction analyses, IR spectroscopy, and thermal gravimetric analysis. Electrocatalytic study reveals that these compounds exhibited the activity of electrocatalytic reduction of sodium nitrite. [ABSTRACT FROM AUTHOR]

Published
2014
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