A novel compound, {[Y（HPIDC）（OX）1/2（H2O）]·2H2O}n （1, H3PIDC = 2-（pyridin-4- yl）-1H-imidazole-4,5-dicarboxylic acid, H2OX = oxalic acid）, has been synthesized under hydrothermal conditions and characteri...A novel compound, {[Y（HPIDC）（OX）1/2（H2O）]·2H2O}n （1, H3PIDC = 2-（pyridin-4- yl）-1H-imidazole-4,5-dicarboxylic acid, H2OX = oxalic acid）, has been synthesized under hydrothermal conditions and characterized by thermal analysis （TGA）, powder X-ray diffraction （PXRD）, and single-crystal X-ray diffraction. Complex 1 crystallizes in monoclinic space group P21/c with a = 8.342（8）, b = 14.61（1）, c = 11.487（1）, β = 90.78（9）°, V = 1400.4（2）3, Z = 4, C11H11N3O9Y, Mr = 418.14, Dc = 1.983 g/cm3, F（000） = 836, Rint = 0.0509, T = 293（2） K, μ = 4.240 mm-1, the final R = 0.0477 and wR = 0.1125 for 2770 observed reflections with I 2σ（I）. Compound 1 exhibits a 3D framework and generates the 1D open channels filled with free water molecules. The structure of 1 can be rationalized as a diamondoid network when the atom yttrium is regarded as a 4-connected node linking four surrounding yttrium atoms. The luminescent property of compound 1 is also investigated.展开更多
A novel ionic liquid type saponification processing based on quaternary phosphonium type bifunctional IL was developed for yttrium separation from ion-adsorbed rare earth deposit.The extractabilities of（[trihexyl（te...A novel ionic liquid type saponification processing based on quaternary phosphonium type bifunctional IL was developed for yttrium separation from ion-adsorbed rare earth deposit.The extractabilities of（[trihexyl（tetradecyl）phosphonium][sec-octylphenoxy acetate]（[P_（6,6,6,14）][SOPAA]） were pronouncedly higher than those of sec-octylphenoxy acetic acid（HSOPAA）,a mixture of HSOPAA and[P_（6,6,6,14）]Cl for rare earth elements（REEs）.The ion association extraction mechanism contributed to avoiding the numerous saponification procedures using alkali and resulting in saponification wastewater.After 13 stages of extraction and 6 stages of scrubbing sections,the Y（Ⅲ） was successfully separated from industrial heavy RREs feed,the purity of Y（Ⅲ） in raffinate was approximately to be 98.9%.Stripping by distilled water was effectively achieved for REEs,which contributed to the decreased consumption of acid to a considerable extent.展开更多
基金supported by the 973 key program of the MOST(2010CB933501,2012CB821705)the Chinese Academy of Sciences(KJCX2-YW-319,KJCX2-EW-H01)+1 种基金the National Natural Science Foundation of China(20873150,20821061,20973173,50772113 and 91022008)the Natural Science Foundation of Fujian Province(2007HZ0001-1,2009HZ0004-1,2009HZ0005-1,2009HZ0006-1,2006L2005)
文摘A novel compound, {[Y（HPIDC）（OX）1/2（H2O）]·2H2O}n （1, H3PIDC = 2-（pyridin-4- yl）-1H-imidazole-4,5-dicarboxylic acid, H2OX = oxalic acid）, has been synthesized under hydrothermal conditions and characterized by thermal analysis （TGA）, powder X-ray diffraction （PXRD）, and single-crystal X-ray diffraction. Complex 1 crystallizes in monoclinic space group P21/c with a = 8.342（8）, b = 14.61（1）, c = 11.487（1）, β = 90.78（9）°, V = 1400.4（2）3, Z = 4, C11H11N3O9Y, Mr = 418.14, Dc = 1.983 g/cm3, F（000） = 836, Rint = 0.0509, T = 293（2） K, μ = 4.240 mm-1, the final R = 0.0477 and wR = 0.1125 for 2770 observed reflections with I 2σ（I）. Compound 1 exhibits a 3D framework and generates the 1D open channels filled with free water molecules. The structure of 1 can be rationalized as a diamondoid network when the atom yttrium is regarded as a 4-connected node linking four surrounding yttrium atoms. The luminescent property of compound 1 is also investigated.
基金supported by “Hundreds Talents Program” from Chinese Academy of Sciences,National Natural Science Foundation of China(21571179)Science and Technology Major Project of the Fujian Province,China(2015HZ0101)Xiamen Universities Research Institutions Jointing Enterprise Projects(3502Z20152009)
文摘A novel ionic liquid type saponification processing based on quaternary phosphonium type bifunctional IL was developed for yttrium separation from ion-adsorbed rare earth deposit.The extractabilities of（[trihexyl（tetradecyl）phosphonium][sec-octylphenoxy acetate]（[P_（6,6,6,14）][SOPAA]） were pronouncedly higher than those of sec-octylphenoxy acetic acid（HSOPAA）,a mixture of HSOPAA and[P_（6,6,6,14）]Cl for rare earth elements（REEs）.The ion association extraction mechanism contributed to avoiding the numerous saponification procedures using alkali and resulting in saponification wastewater.After 13 stages of extraction and 6 stages of scrubbing sections,the Y（Ⅲ） was successfully separated from industrial heavy RREs feed,the purity of Y（Ⅲ） in raffinate was approximately to be 98.9%.Stripping by distilled water was effectively achieved for REEs,which contributed to the decreased consumption of acid to a considerable extent.
