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- Keywords Lanthanum naphthenate (La(naph) 3);trans Polybutadiene;n Dibutyl magnesium (( n Bu) 2Mg); 环烷酸镧;高反式聚丁二烯;正丁基镁;
- Cerium showed more effective than lanthanum for vanadium tolerance of FCC catalysts. 氧化铈较氧化镧更容易与钒反应,因而具有更强的抗钒能力。
- The effect of rare earth elements such as cerium, lanthanum and yttrium on electroless deposition rate of cobalt-nickel-boron alloy was studied. 研究了稀土元素铈、镧、钇对化学镀钴-镍-硼合金沉积速度的影响。
- Cerium Acetate is soluble in water. 说明:醋酸铈溶于水。
- Objective Study of the influences of lanthanum, cerium and fluoride on the activity of glucosyltransferase (GTF) and adherence of oral cariogenic bacteria. 摘要目的为观察镧、铈和氟对葡糖基转移酶活性和口腔主要致龋粘附的影响。
- Lanthanum nitrate hexahydrate p.A. (硝酸镧 六水 P.
- Rich lanthanum rare earth chloride and industrial purity cerium oxide or compounds can be made by acid leaching under normal and reductive condition,respectively. 如常规浸出和还原浸出分别进行,则可从精矿开始直接制取富镧氯化稀土和工业级纯铈及其化合物。
- Synthesis of dibromo-p-methyl-methylsulfonazois described and its color reactions with calcium,strontium, barium,lanthanum, cerium and lead invarious acid media have been studied. 新显色剂二溴对甲基偶氮甲磺的合成方法,并研究了该试剂在磷酸、盐酸、硝酸介质中与钙、锶、钡、镧、铈铅的显色反应。
- The common driers are metal octoate and metal naphthenate. 常用的是变价金属环烷酸盐和异辛酸盐。
- Cerium Hydroxide is insoluble in water and soluble in strong acid. 说明:氢氧化铈不溶于水,溶于强酸。
- Cerium Nitrate is soluble in water and absorb moisture in wet air. 说明:硝酸铈溶于水,在潮湿空气中易潮解。
- Application: Used in Magnetic material and made Lanthanum metal. 用途:产品用于生产金属镧,磁性材料等。
- Among the simplest are the lanthanum compounds of the form La?? 其中最简单的是la?研问降娘缁0合物。
- Application: Used in Magnetic material and made Cerium metal. 用途:产品用于生产金属铈,磁性材料等。
- Nickel naphthenate is used broadly in petrochemical and chemical scopes. 环烷酸镍是石油化工领域内的重要助剂。
- The lanthanum can incrcase the hardness of the alloys. 研究了铜钛镧合金热处理后的组织与性能。
- ELV 8 accelerator uses flat lanthanum hexaboride as the cathode . ELV-8型加速器的加速管分为变梯度加速管段和等梯度加速管段两部分。
- The lanthanum exists in the alloy in the form of compound. 镧可以提高合金的硬度;
- In the paper,a new technology of divorcement cerium from rich lanthanum rare earth in bastnaesite was studied.The rich lanthanum rare earth can be used as raw material of hydrogen storage alloy. 本文对氟碳铈镧矿中铈与富镧稀土分离的新工艺进行了研究,分离出来的富镧稀土,经适当配比可满足制取储氢合金的要求。
- The yttrium abundance is constant ([Y/Fe] =-0.06) for all stars with [Fe/H] >-25. (3) The barium overdeficiency increases with decreasing metallicity when [Fe/H] <-1.7. (4) Lanthanum and cerium are overdeficient with respect to iron. 对[Fe/H]>-2.;5的恒星钇丰度为常数([Y/Fe]=-0