Synthesis and crystal structure of sodium praseodymium polyphosphate, NaPr(PO3)4
Na2CO3, Pr6O11 和 H3PO4 的反应给了钠镨 polyphosphate NaPr (PO3 ) 4。标题混合物与 a=0.9965 (4 ) 在单斜晶的 P21/n 空间组结晶 nm, b=1.31437 (4 ) nm, c=0.72271 (3 ) nm, =90.429 (3 ) 吗?
Materials Literature
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Na2CO3, Pr6O11 和 H3PO4 的反应给了钠镨 polyphosphate NaPr (PO3 ) 4。标题混合物与 a=0.9965 (4 ) 在单斜晶的 P21/n 空间组结晶 nm, b=1.31437 (4 ) nm, c=0.72271 (3 ) nm, =90.429 (3 ) 吗?
imidazoline 禁止者的一种类型作为原料用硬脂酸和 diethylenetriamine (DETA ) 被综合。硬脂的 imidazoline (IM ) 的自我装配的单层(SAM ) 在铜表面上被准备。IM 修改的铜电极被电气化学的阻抗检测光谱学(EIS ) , Tafel 极化曲线, X 光检查光电子光谱学(XPS ) 和 Fourial 转变思考光谱学(FTIR ) 。为 IM 的铜腐蚀的最大的抑制效率根据 EIS 结果在 NaCl 答案是 99% 。XPS 结果提供了 IM 在铜表面上被吸附的证据。分子的模拟的理论计算支持了试验性的结果并且证明 IM 分子在一个角度被倾斜到铜表面。
的形态学之上的反应时间,反应物的集中,反应温度和分散剂的效果被调查了。产品被 X 光检查检测衍射(XRD ) ,原子力量显微镜(AFM ) ,扫描电子显微镜(SEM ) 和传播电子显微镜(TEM ) 。新奇跨 like 结构被把 n-butylamine 用作分散剂获得。跨 like 结构的形成被讨论了, solution-liquid-solid (SLS ) 机制被建议。
Deterioration process of the organic coatings on carbon steel substrate during exposure to 3.5% NaCl solution was investigated using the electrochemical impedance spectroscopy(EIS) and scanning Kelvin probe(SKP).According to the EIS and SKP responses,the entire deterioration process can be divided into three main stag…
锶铝酸盐的电子结构(SrAl2O4 :Eu2+) 材料被学习与一联合试验性、理论的途径。当非优化、优化的水晶结构的电子结构被使用密度理论上调查时, UV-VUV 同步加速器放射在试验性的学习被使用功能的理论。象和 Eu2+ 4f7 8S7/2 地面状态的位置的材料的乐队差距精力一样的原子价和传导乐队的结构是计算的。计算乐队差距精力(6.4 eV ) 与 6.6 eV 的试验性的价值同意了很好。而锶的传导乐队的底部说,原子价乐队主要由氧状态组成了。与试验性的结果一致, Eu2+ 的计算 4f7 8S7/2 地面状态躺在主人的精力差距。4f7 地面状态的位置取决于库仑排斥力量。关于原子价和传导乐队的 4f7 地面状态的位置用可得到的理…
血浆电解氧化(PEO ) 进程被执行有或没有钠 fluorosilicate 在象硅酸盐和铝酸盐答案那样的四种电解质在 6061 铝底层上生产陶器的层。PEO 过程在混合电压下面被执行(260 V DC 与 200 V 结合了, 60 Hz 交流振幅) 在为 5 min 的房间温度。作文,微观结构和对待 PEO 的层的元素分发分析被 XRD 和 SEM 与版本执行生长机制,元素分发和氧化物层的性质上的电解质内容的效果被学习。在铝酸盐答案产生的层在硅酸盐答案比那些显示出更光滑的表面,是明显的。而且,氟的符号离子的增加能有效地控制层孔;因此,它能提高层的性质。
The phase and morphology transformation during the hydrothermal treating process of Y2O3 was evaluated with X-ray diffcrcnce (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), particle size and specific surface area determination.The results showed that the cubic Y2O3 did not transfer i…
A single crystal of Bi2ZnOB2O6 has been grown with sizes up to 18×13×6 mm3 by the top-seeded growth method for the first time with high quality. It crystallizes in the orthorhombic system, space group Pba2 with unit-cell parameters a = 10.8200(7) A˚, b = 11.0014(7) A˚, c = 4.8896(3) A˚, Z = 4, V = 582.03(6) A˚3. Bi2Zn…
Erbium-doped tellurite-based glasses with compositions of TeO2-ZnO-Na2O(TZN)and TeO2-ZnO-La2O3(TZL)are prepared, and fluorescence properties of Er3+:4I13/2→4I15/2 transition have been investigated as a function of erbium-doping concentration. It is found that fluorescence intensity decreases evidently with increasing…
All the samples possess single-phase character and their superconducting transition temperatures (TcR = 0) are 85, 90, and 72 K, respectively for Bi2212-MQ, Bi2212-N2, and Bi2212-O2. Though the Bi2212-MQ and Bi2212-N2 samples are in near optimum doping regime, the Bi2212-O2 is an overdoped sample. TcS = 0 values obtai…
3-aminopropyltriethoxysilane grafted montmorillonites 在乙醇水混合与 montmorillonite,激活酸的 montmorillonites 和 3-aminopropyltriethoxysilane 被综合。产生产品用 Fourier 变换被调查红外线(FTIR ) 光谱学, X 光检查衍射(XRD ) , thermogravimetric (TG ) 。XRD 模式证明矽烷被设置进 montmorillonite 画廊,由增加基础间距显示了。这些设置的 silanes 可能在 montmorillonite 和激活酸的 montmorillonites 夹层空格以内…
This study was to develope the functional work clothing for livestock farmers. Major demanding performances for livestock work clothing are anti-soil and anti-bacterial properties. On surveys, functional fabrics that have anti-soil, anti-bacterial and waterrepellent performances were developed and the work clothing th…
为在 1773 K 的 Zr-Si-C-O 系统的一张优势区域图根据关联词被阴谋热力学的数据。β - SiC/ZrO2 composites 被锆石(ZrSiO4 ) 的 carbothermal 减小在氩空气基于阶段图准备。锆石和碳黑色根据 0.2 的 C/ZrSiO4 集体比率被混合,并且与 0, 1wt% 和 2wt% La2O3 的额外的增加。混合的阶段进化被在 1803 K 准备的产品的 X 光检查粉末衍射,和微观结构在 1723 1803 K 调查因为 4 h 被扫描电子显微镜检验。结果证明 ZrSiO4 和β - 的形成的分解能被增加加热温度和增加的 La2O3 原文如此支持。β - SiC/ZrO2 composi…
This paper describes a study on the effect of adding cement and silica fume with cement on the engineering properties (Compaction and Shear strength) of the clayey soil. Inorganic clay with low plasticity was used in this study as a natural soil. A series of laboratory experiments have been implemented and varieties o…
In this paper, the investigation of eutectic bonding at wafer level was implemented using single crystalline Si, poly-Si and a-Si. Manifold experiment parameters of material and process were employed. Strength and yield of the bonds were investigated and characterized. Typical optical methods like SEM, infrared as wel…
The polarization and depolarization of antiferroelectric Pb(Nb,Zr,Sn,Ti)O3 ceramics under dc bias were studied under hydraulic pressure ranging from zero to 250 MPa. It was found that the antiferroelectric ceramic can be induced to a metastable ferroelectric state and that the ceramic at this ferroelectric state can b…
In this study, alumina matrix composites reinforced with carbon nanotubes (CNTs) were fabricated by ultrasonic dispersion, ball milling, mixing, compaction, and sintering processes, and their relative density, electrical resistance, hardness, flexure strength, and fracture toughness were evaluated. 0 similar to 3 vol.…
Chemotherapy agents have little or no specificity over cancer cells, resulting in low therapeutic concentrations at the tumor site (a consequence of a broad systemic distribution),\n\t\t\t\t and severe side effects. With the aim of avoiding cancer therapy failure, several approaches\n\t\t\t\t such as design of new ant…
The workability behaviour of pure aluminium and Al-15% SiC powder metallurgy composites has been studied during cold compaction introducing various sizes of the second phase particles, namely, 120 μm, 65 μm and 50 μm. The matrix material of aluminium of powder particle sizes ranging from −37 μm to 75 μm has been consi…
Discharges between water droplets caused by distortion of these droplets are relevant in the processes leading to flashover of hydrophobic insulators. This paper investigates discharge activities between two water droplets on an insulator surface, when a constant AC voltage is applied through an experimental electrode…