• An Examination of Lanthanide Additives on the Performance ...

    The effect of various lanthanide additives on the performance of Cu-YSZ (yttria-stabilized zirconia), cermet anodes for solid-oxide fuel cells (SOFCs) was investigated at 973 K for H2 and the direct oxidation of butane. In all cases, the lanthanide oxides were added to the SOFC by impregnation of a porous YSZ matrix with aqueous solutions of the nitrate salts, followed by decomposition of ...

  • Enhanced Oxide Ion Conductivity in Stabilized δ-Bi2O3 ...

    The substitution of Re into Bi2O3 allows stabilization of the δ-Bi2O3 structure by additional substitution of any lanthanide ion to give, for example, phases of composition Bi12.5La1.5ReO24.5. Some of these phases have been found to show exceptionally high oxide ion conductivity at low temperatures, ca 10-3 S cm-1 at 300 °C. The phases show a significant structural difference from other δ ...

  • Transparent ceramics based on yttrium subgroup lanthanide ...

    Transparent C-Y2O3–based ceramics characterized by optical transmission in visible and nearinfrared regions and translucent ceramics based on oxides of yttrium subgroup lanthanides are produced.

  • Electrochemical oxidation of 243Am(III) in nitric acid by ...

    Abstract. Selective oxidation of trivalent americium (Am) could facilitate its separation from lanthanides in nuclear waste streams. Here, we report the application of a high-surface-area, tin-doped indium oxide electrode surface-derivatized with a terpyridine ligand to the …

  • Lanthanides List of Elements - thoughtco.com

    Jan 28, 2019· The lanthanides or lanthanoid series is a group of transition metals located on the periodic table in the first row (period) below the main body of the table. The lanthanides are commonly referred to as the rare earths, although many people group scandium and …

  • Advanced Materials - Trans Tech, Inc

    oxide fuel cells, you can turn to the Trans-Tech Advanced Materials product line for a low-cost, solid-state reaction manufacturing process to help achieve your goals. We offer the complete ceramic oxide solution: Cathode: Conductive perovskites, including alkaline-earth doped lanthanide manganites, cobaltite, nickelates

  • Highly monodisperse, lanthanide-containing polystyrene ...

    4 Jonathan M. Hughes, Peter M. Budd, Andrew Grieve, Pranab Dutta, Karen Tiede, John Lewis, Highly monodisperse, lanthanide-containing polystyrene nanoparticles as potential standard reference materials for environmental "nano" fate analysis, Journal of Applied Polymer Science, 2015, 132, 24, n/aWiley Online Library

  • Thermodynamic stability of perovskite and lanthanum ...

    In this study, the aforementioned instability of LNO has been addressed by compositional tailoring of LNO: lanthanide doped ceria (LnxCe1-xO2,LnDC)composite. By increasing the lanthanide dopant concentration in the ceria phase close to its solubility limit, the LNO phase has been stabilized in the LNO:LnDC composites.

  • Dimeric Complexes of Lanthanide(III ...

    A series of new mixed‐ligand lanthanide complexes [Ln(hfa) 3 (4‐cpyNO)] 2 (Ln = Sm III –Ho III and Tm III; hfa – = hexafluoroacetylacetonate; 4‐cpyNO = 4‐cyanopyridine N‐oxide) have been synthesised by treating the corresponding lanthanide hexafluoroacetylacetonates with 4‐cpyNO (molar ratio 1:1) in chloroform. Single‐crystal X‐ray analysis revealed that [Tb(hfa) 3 (4 ...

  • Mixed lanthanide oxide nanoparticles as dual imaging agent ...

    There is a continuing research interest in mixed lanthanide oxide nanoparticles because they have both magnetic and fluorescent properties useful for dual imaging in biomedicine 1,2,3,4,5,6,7,8,9,10.By using different lanthanide ions in synthesis, a variety of mixed lanthanide oxide nanoparticles can be …

  • Ionic conductivities and phase transitions of lanthanide ...

    Ionic conductivities and phase transitions of lanthanide rare-earth substituted La< sub> 2 Mo< sub> 2 O< sub> 9 ... is an oxygen ion conductor discovered by Lacorre oxide fuel cell, oxygen pumps, and oxygen sensors,6–11 et al.1–3 The concept of lone-pair substitution has been pro- stabilization of the high temperature ...

  • Hysteresis in Lanthanide Zirconium Oxides Observed Using a ...

    was used to investigate oxide traps before and after annealing for lanthanide zirconium oxide thin films deposited on n-type Si (111) substrat es at 300 °C by liquid injection Atomic Layer ... were stabilized by addition of small amounts of rare earth elements (such as La, Gd, Dy, Er, etc.) [13–17].

  • Effects of Lanthanide Dopants on Oxygen Diffusion in ...

    The effects of lanthanide co-dopants on oxygen diffusion in yttria-stabilized zirconia (YSZ) are studied using a combined first principles density functional theory (DFT)/kinetic Monte Carlo (kMC ...

  • (PDF) Polymer-Stabilized Lanthanide Fluoride Nanoparticle ...

    Polymer-Stabilized Lanthanide Fluoride Nanoparticle Aggregates as Contrast Agents for Magnetic Resonance Imaging and Computed Tomography. ... We begin by discussing contrast agents has focused primarily on iron oxide general features of MRI contrast agents, including proper- superparamagnetic nanoparticles or Gd3þ-based nano- ties that must be ...

  • Effect of oxygen sublattice order on conductivity in ...

    The high temperature cubic bismuth oxide stabilized with Lanthanide dopants undergoes an order–disorder transition of the anion sublattice at about 600 °C. Above the transition temperature the conductivity exhibits a low activation energy (E A ) due to the disordered anion sublattice, and below the transition temperature the conductivity ...

  • ATOMIC LAYER DEPOSITION OF LANTHANIDE OXIDE THIN …

    ATOMIC LAYER DEPOSITION OF LANTHANIDE OXIDE THIN FILMS Jani Päiväsaari Dissertation for the degree of Doctor of Science in Technology to be presented with due permission of the Department of Chemical Technology for public examination and debate in Auditorium V1 at Helsinki University of Technology (Espoo, Finland) on the 19th of May, 2006,

  • Thulium - Wikipedia

    It is the thirteenth and third-last element in the lanthanide series. Like the other lanthanides, the most common oxidation state is +3, seen in its oxide, halides and other compounds; because it occurs so late in the series, however, the +2 oxidation state is also stabilized by the nearly full 4f shell that results.

  • Lanthanum Strontium Manganite (LSM) - Yttria Stabilized ...

    About Lanthanum Strontium Manganite (LSM) - Yttria Stabilized Zirconia (YSZ) American Elements specializes in producing LSM-YSZ for fuel cell cathode applications utilizing solid state processing to produce single phase perovskite structures with various doping levels and surface areas (SSA) for …

  • Rare Earth Minerals Mining With 99.5% Lanthanum Oxide ...

    Rare Earth Minerals Mining With 99.5% Lanthanum Oxide, Find Complete Details about Rare Earth Minerals Mining With 99.5% Lanthanum Oxide,Lanthanum Oxide La2o3 Low Price from Supplier or Manufacturer-Shanghai Bosun Abrasive Co., Ltd.

  • Lanthanum oxide - Wikipedia

    Lanthanum oxide, also known as lanthana, chemical formula La 2 O 3, is an inorganic compound containing the rare earth element lanthanum and oxygen. It is used in some ferroelectric materials, as a component of optical materials, and is a feedstock for certain catalysts, among other uses.

  • Reactivity of lanthanide ferrite SOFC cathodes with YSZ ...

    Apr 22, 2004· The reactivity of yttria-stabilized zirconia (YSZ) with compounds of the form Ln 0.8 Sr 0.2 FeO 3 (Ln=Sm, Pr, Nd and a mixed lanthanide precursor) and La 0.8 M 0.2 FeO 3 (M=Ba, Ca) was investigated, and compared to the comprehensively studied La 0.8 Sr 0.2 FeO 3 (LSF-20) composition. With the exception of Ca, all variants showed either increased reactivity with YSZ (compared to the …

  • Polymer-Stabilized Lanthanide Fluoride Nanoparticle ...

    Poly(acrylic acid) consisting of 25 monomer units (PAA25) was used to stabilize nanoparticle aggregates (NPAs) consisting of either NaGdF4 or 50/50 mixtures of GdF3 and CeF3. The resulting polymer-stabilized nanoparticle aggregates (NPAs) were developed and tested for their application as contrast agents for magnetic resonance imaging (MRI) and computed tomography (CT).

  • Layered thermal barrier coatings containing lanthanide ...

    Jul 12, 2007· These stabilized zirconias may be further identified as combined with one or more of a second metal (e.g., a lanthanide or actinide) oxide such as dysprosia, erbia, europia, gadolinia, neodymia, praseodymia, urania, and hafnia to further reduce thermal conductivity of …

  • Lanthanum manganite-based air electrode for solid oxide ...

    A low cost, lanthanide-substituted, dimensionally and thermally stable, gas permeable, electrically conductive, porous ceramic air electrode composition of lanthanide-substituted doped lanthanum manganite is provided which is used as the cathode in high temperature, solid oxide …

  • Lanthanum (La) | AMERICAN ELEMENTS

    Lanthanide zirconates and lanthanum strontium manganites are used for their catalytic and conductivity properties and lanthanum stabilized zirconia has useful electrical and mechanical properties. Lanthanum's ability to bind with phosphates in water creates numerous uses in water treatment .

  • ICP-MS Analysis of Lanthanide-Doped Nanoparticles as a Non ...

    2.2 Synthesis of Dextran Stabilized Lanthanide Doped SPIO. Dextran coated, lanthanide doped, SPIO nanoparticles were prepared though the coprecipitation of ferrous, ferric, and lanthanide ions in the presence of dextran [].Briefly, 25 g of dextran T-10 (Pharmacosmos A/S, Holbaek, Denmark), was dissolved in 500 mL dH 2 O and heated to 80°C for 1 hour.

  • Lanthanide transport in stabilized zirconias ...

    The diffusion of all stable lanthanides was measured both in calcia stabilized zirconia (CSZ) and in yttria stabilized zirconia (YSZ) in the temperature range between 1286 and 1600 °C. The lanthanide diffusion coefficients obtained increase with increasing ionic radius.

  • Lanthanide - Wikipedia

    The lanthanide (/ ˈ l æ n θ ə n aɪ d /) or lanthanoid (/ ˈ l æ n θ ə n ɔɪ d /) series of chemical elements comprises the 15 metallic chemical elements with atomic numbers 57 through 71, from lanthanum through lutetium. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the ...

  • Lanthanide transport in stabilized zirconias ...

    Abstract The diffusion of all stable lanthanides was measured both in calcia stabilized zirconia (CSZ) and in yttria stabilized zirconia (YSZ) in the temperature range between 1286 and 1600 °C. The lanthanide diffusion coefficients obtained increase with increasing ionic radius.

  • Cooperative effect of carbamoylmethylene phosphine oxide ...

    Cooperative effect of carbamoylmethylene phosphine oxide on the extraction of lanthanides(III) ... (0.003 M), the AOT-based microemulsion system was greatly stabilized and exhibited extremely enhanced extractability, which has not been seen in the other microemulsion systems studied before. Also, the separation of the lanthanide series was also ...