镧系元素的双(九钨二钒)杂多酸钾的合成与表征

报道了镧系元素钨钒杂多配合物的合成方法。元素分析和热重分析确定其通式为：Ｋ１０Ｈ７〔Ｌｎ（Ｖ２Ｗ９Ｏ３７）２〕·ｘＨ２Ｏ（Ｌｎ＝Ｓｍ３＋、Ｅｕ３＋、Ｇｄ３＋）。利用红外（ＩＲ）、紫外（ＵＶ）和Ｘ射线衍射谱对其进行了表征。配合物的热解性质研究表明，其分解温度范围为４００～４５０℃。     

Influence of Lanthanum on Fluorescence Properties of Ag-BaO Thin Films

Ag-BaO thin films doped with lanthanum were prepared by vacuum deposition. Compared with the normal Ag-BaO thin film, there is almost no change with the shape and the peak site of the fluorescence spectrum; however, fluores-cence emission strength of the whole observation band(325 -600 nm)increases about 40%, and the increase of short wavelength range is more remarkable than that of long wavelength range, which we named “blue-stronger“ phenomenon. Analytic results show that, with the forming of intermetallic compounds between silver and lanthanum, the 4f-state energy levels lie just below the Fermi level within 5 eV. It is the energy exchange between the 4f energy levels and the conduction band that causes the increase effect of fluorescence emission, and it is the optical absorption cross section of 4f electron, which increases with the increase of energy of incidence photon, that gives rise to the “blue-stronger“ phenomenon.     

超临界流体络合萃取镧系和锕系元素的研究进展

超临界流体络合萃取是1种可用于萃取金属离子的新型分离技术，它应用于乏燃料后处理和核废物处理中的最大优点是能大幅减少二次废物的产生。文章主要介绍超临界流体的特点、超临界流体络合萃取的基本原理及其影响因素，并对超临界流体络合萃取镧系和锕系元素的研究进展及其在乏燃料后处理工艺研究中的应用进行综述。     

利用含微量镧系元素的粘土烧制水泥的研究

利用含微量镧系元素的粘土作原料之一配料，可改善生料的易烧性；有利于水泥熟料主要矿物阿利特的形成，从而达到提高水泥熟料产质量并节省烧成用煤之目的。     

镧系元素性质递变的双峰现象

本文从镧系的电子结构和化学键参数分析了镧系元素性质遂变的双峰现象的本质。并探讨了它在稀土分离提取工艺方面应用的可能性。     

镧系元素的选择沉淀洗提工艺

本文介绍了Ｄ２ＥＨＰＡ中一步沉淀洗提铕十钕，镝＋钕铒＋钕的一项研究。负载镧系元素的溶剂从一种以硫酸钠作沉淀剂的硫酸溶液中析出，研究发现；钕和铕比镝，铒更易洗提出。这就导致了在洗提的有机相中重镧系元素与轻镧摩比的增大。     

Syntheses of Alkaline Earth and Lanthanide Cryptates with Pyridine-Based Group

New alkaline earth metal cryptates [ML]（NO3）2 ·2H2O （M=Ca^2＋, Sr^2＋, Ba^2＋; L = 1, 4,12,15,18, 26, 31, 39, 42, 43, 44-undecaazapentacyclo- [ 13.13.13.1^6,10 .1^20,24 .1^33,37 ]-tetratetraconta -4, 6, 8, 10（44）, 11, 18, 20, 22, 24（43）, 25, 31, 33, 35, 37（42）, 38-pentadecaene） were synthesized by [2 ＋ 3 ] template condensation of tris（2-aminoethyl） amine with 2, 6-diformylpyridine, and then by transmetallation reactions of the calcium cryptate [CaL] （NO3）2·2H2O with corresponding lanthanide ions; three lanthanide cryptates [ LnL] （NO）3·3H2O （Ln = Eu, Gd, Tb） were synthesized and characterized by physical methods. The crystal structure of the terbium cryptate [TbL] （NO）3·3H2O was studied by X-ray analysis. The central atom was coordinated by three pyridyl and six imino nitrogen atoms and exhibited a distorted tricapped trigonal prismatic coordination geometry.     

Relationship between Crystal Structure and Luminescence Properties of （Y0.96-x Lnx Ce0.04 ）3 Al5 O12 （LH=Gd,La, Lu） Phosphors

The doping effects of La^3＋, Gd^3＋ and Lu^3＋ on the crystal structure and luminescence properties of （Yo96-x LnxCe0.04）3Al5O12（Ln = Gd, La, Lu） phosphors were studied. The X-ray diffraction patterns presented that with the inerease of the doping concentrations of La^3＋ and Gd^3＋ ions, the d-value of （Y0.96-xLnxCe0.04）3Al5O12 （Ln = Gd, La） inereased and the larger the doping ion, the stronger the effect would be. The doping amount causing phase transition in （Y0.96-xLnxCe0.04）3Al5O12 decreased with the inerease of the ionic radii of the doping lanthanide ions （La^3＋： 0.106 nm, Gd^3＋： 0. 094 nm, Lu^3＋ ： 0.083 nm）. The bigger doping ion of Gd^3＋ made the emission of （Y0.96-xGdxCe0.04）3Al5O12 move to red spectral region, but the smaller one of Lu^3＋ made it blue.     

水泥熟料中镧系元素微组分的作用与分布

本文通过生料易烧性试验，利用高温国显微镜（ＨＴＭ）、Ｘ射线（ＸＲＤ）和岩相分析等测试手段和分析方法，研究了镧系元素微量组分对水泥熟料矿物形成的作用及其在熟料中的分布。     

镧系和锕系元素在离子液体中的配位和电化学行为的研究进展

高温熔盐电解法是干法后处理的研究重点之一,但高温操作对设备要求和能耗极高,限制了该技术的发展。离子液体作为"新一代绿色溶剂",在室温下就可得到在高温熔盐中电沉积才能得到的金属和合金,具有操作简便、安全、能耗低等优点,有望代替碱金属氯化物熔盐作为熔盐电解技术的介质应用到干法后处理中。在前人工作的基础上概括介绍了近几年来国内外对镧系和锕系元素在离子液体中的配位和电化学行为的研究成果,并展望未来的研究方向。