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Effect of Polyvinylidene Fluoride Hollow Fiber Membranes on Mass Transfer of Samarium LI De-qian1,ZHANG Feng-jun1,LUO Fang1,WU Yong-lie1 (1.Laboratory of Rare Earth Chemistry and Physics, Institute... and reaction rate constant were obtained. Key words:rare earths; samarium; extraction; polyvinylidene fluoride hollow fiber membrane; mass transfer kinetics; [全文内容正在添加中] ......
J. Cent. South Univ. Technol. (2009) 16: 0558-0562 DOI: 10.1007/s11771-009-0093-4 Alkaline treatment kinetics of calcium phosphate by piezoelectric quartz crystal impedance ZENG Li-ping(曾丽萍)1...; Abstract: Calcium phosphate film was prepared by electrochemical deposition technology. Subsequently, the alkaline treatment process of calcium......
Synthesis and Fluorescence of Europium-Doped Barium Fluoride Cubic Nanocolumns 刘洁1,叶泽人1,石春山1,连洪州1 (1.Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China) Abstract:Europium-doped barium fluoride cubic nanocolumns were synthesized from the quaternary water in oil reverse microemulsions. In this process......
J. Cent. South Univ. (2012) 19: 1802-1807 DOI: 10.1007/s11771-012-1211-2 Crystallization of calcium carbonate in hydrogels in presence of meso-tetrakis (4-hydroxylphenyl) porphyrin ZHANG Feng-ju(张凤菊... an important role in biomineralization process. In order to explore the effect of both meso-tetrakis (4-hydroxylphenyl) porphyrin (THPP) and hydrogels on calcium carbonate mineralization, and consequently......
FLUORIDE GLASSES CONTAINING RARE EARTH张克立,夏幽兰,袁启华摘 要:<正> Fluoride glasses containing rare earths exhibit interesting spectroscopic properties.They have widetransmission range from 0.25μm in the UV to 7μm in the IR,allowing observation,in a vitreous material,ofabsorption and emission bands in a large optical range.The absorption spectra of fluoride......
; calcium fluoride; catalysis; carbothermic reduction; hemimorphite 1 Introduction Hemimorphite is one of the most valuable zinc oxide ores as well as the final product when zinc silicate comes... silicate. From Fig.6 it is found that there is a large amount of SiO2 and a small amount of Zn2SiO4 and CaF2 without other fluoride in the slag, namely, CaF2 can catalyze the carbothermic reduction of zinc......
and Springer-Verlag Berlin Heidelberg 2011 Abstract: Anodic oxide films of titanium alloy Ti-10V-2Fe-3Al were sealed in calcium acetate solution. The morphology and composition of the sealed films were... more uniform. Elemental calcium is presented through the whole depth of the anodic oxide films. The roughness of the anodic oxide films is reduced after the sealing process. Electrochemical impedance......
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Gypsum crystallization and potassium chloride regeneration by reaction of calcium chloride solution with potassium sulfate solution or solid PENG Cui(彭 翠), ZHANG Fu-li(张福利), GUO Zhan... at the expense of low calcium removal rate. Key words: crystallization; gypsum; KCl regeneration; calcium removal ......
