Separation of Red(Y_2O_3:Eu~(3+)),Blue(Sr,Ca,Ba)_(10)(PO_4)_6Cl_2:Eu~(2+)and Green(LaPO_4:Tb~(3+),Ce~(3+))Rare Earth Phosphors by Liquid/Liquid Extraction

武汉理工大学学报-材料科学版(英文版), 2009, 24(3): 418-423. doi: 10.1007/s11595-009-3418-0

^1, , ^2, , ^3, , ^4,

1.School of Resource and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China

2.School of Resource and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China

3.Department of Material-Process & Applied Chemistry for Environments,Akita University,Akita 010-8502,Japan

4.Department of Material-Process & Applied Chemistry for Environments,Akita University,Akita 010-8502,Japan

基金项目: the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry(ROCS,SEM[2005]383)

Separation of Red(Y_2O_3:Eu~(3+)),Blue(Sr,Ca,Ba)_(10)(PO_4)_6Cl_2:Eu~(2+)and Green(LaPO_4:Tb~(3+),Ce~(3+))Rare Earth Phosphors by Liquid/Liquid Extraction

MEI Guangjun ^1, , RAO Peng ^2, , MITSUAKI Matsuda ^3, , TOYOHISA Fujita ^4,

1.School of Resource and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China

2.School of Resource and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China

3.Department of Material-Process & Applied Chemistry for Environments,Akita University,Akita 010-8502,Japan

4.Department of Material-Process & Applied Chemistry for Environments,Akita University,Akita 010-8502,Japan

Keywords： rare earth phosphor

A novel process for separation of red(Y_2O_3:Eu~(3+)),blue(Sr,Ca,Ba)_(10)(PO_4)_6Cl_2:Eu~(2+) and green(LaPO_4:Tb~(3+),Ce~(3+) )fine tricolor phosphor powders was established.First,the green phosphor was extracted and separated from three phosphor mixtures in heptane/DMF(N,N-Dimethylformamide)system using stearylamine or laurylamine(DDA)as the cationic surfactant.Then,after being treated with 99.5%ethanol,the blue and red phosphors could be separated in Heptane/DMF system in presence of 1-octanesulfonic acid sodium salt as the anionic surfactant.Satisfactory separation results have been achieved through two steps extractions with their artificial mixtures.The grades and recovery of separated products reached respectively as follows:red product was 95.3%and 90.9%,blue product was 90.0%and 95.2%,and green product was 92.2%and 91.8%.

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材料期刊网

Separation of Red(Y_2O_3:Eu~(3+)),Blue(Sr,Ca,Ba)_(10)(PO_4)_6Cl_2:Eu~(2+)and Green(LaPO_4:Tb~(3+),Ce~(3+))Rare Earth Phosphors by Liquid/Liquid Extraction

参考文献