Abstract: An activated carbon/palladium-gallium (Pd—Ga) liquid alloy composite catalyst, including a support and an active component supported on the support. The support is acid washed activated carbon. The active component is Pd—Ga liquid alloy. In the present invention, the active component Pd—Ga, present in the form of liquid alloy, forms a self-protective oxide layer. This protects acetylene from secondary reactions on the surface of the catalyst, inhibits or reduces acetylene to deeply hydrogenate to form ethane, thereby increasing ethylene selectivity. The present invention further provides a preparation method of the catalyst, where the catalyst of the present invention is prepared by immersion. The preparation method is simple and easy to operate. When the activated carbon/Pd—Ga liquid alloy composite catalyst provided by the present invention is used for acetylene hydrogenation to prepare ethylene, conversion rate of acetylene is as high as 99.8%, while the ethylene selectivity is as high as 98.9%.

Abstract: A sliding contact material that is used for a constituent material, particularly a brush, of a motor. The sliding contact material includes: Pd in an amount of 20.0% by mass or more and 50.0% by mass or less; Ni and/or Co in an amount of 0.6% by mass or more and 3.0% by mass or less in terms of a total concentration; and Ag and inevitable impurities as a balance. Preferably, the sliding contact material further contains an additive element M including at least one of Sn and In, and the total concentration of the additive element M is 0.1% by mass or more and 3.0% by mass or less. When containing the additive element M, the sliding contact material has material structures in which composite dispersed particles containing an intermetallic compound of Pd and the additive element M are dispersed in an Ag alloy matrix, and the ratio (KPd/KM) of the content (% by mass) of Pd and the content (% by mass) of the additive element M in the composite dispersed particles is within a range of 2.4 or more and 3.6 or less.

Abstract: A palladium-based alloy having a coefficient of thermal expansion (CTE) of about 12.0 to about 13.0 and having one or more of the following additive metals: platinum, gallium, chromium, molybdenum, tin, silicon, ruthenium, rhenium, indium, tungsten, niobium, boron and lithium.

Abstract: A precious metal alloy includes palladium and rhodium for manufacturing jewelry pieces like jewelry, jewelry articles, bijouterie, watches and watch cases and/or writing utensils and/or a component thereof. The precious metal alloy used includes palladium in an amount of 40-60% by weight and rhodium in an amount of 40-60% by weight, and that the precious metal alloy used may include gold, platinum, ruthenium and/or iridium in an amount of between greater than 0 and 10% by weight, or alternatively in an amount of between 2% by weight and 5% by weight, or alternatively in an amount of 3% by weight. The corresponding amount of rhodium and/or palladium is then replaced by the aforementioned secondary alloy components, wherein the amounts of rhodium and palladium as well as of the provided aforementioned secondary alloy components complement substantially to 100% by weight.

Abstract: Technologies are generally described for a membrane that may incorporate a graphene layer perforated by a plurality of nanoscale pores. The membrane may also include a gas sorbent that may be configured to contact a surface of the graphene layer. The gas sorbent may be configured to direct at least one gas adsorbed at the gas sorbent into the nanoscale pores. The nanoscale pores may have a diameter that selectively facilitates passage of a first gas compared to a second gas to separate the first gas from a fluid mixture of the two gases. The gas sorbent may increase the surface concentration of the first gas at the graphene layer. Such membranes may exhibit improved properties compared to conventional graphene and polymeric membranes for gas separations, e.g., greater selectivity, greater gas permeation rates, or the like.

Abstract: The alloy fine particles of the present invention are fine particles of a solid solution alloy, in which a plurality of metal elements are mixed at the atomic level. The production method of the present invention is a method for producing alloy fine particles composed of a plurality of metal elements. This production method includes the steps of (i) preparing a solution containing ions of the plurality of metal elements and a liquid containing a reducing agent; and (ii) mixing the solution with the liquid that has been heated.

Abstract: Disclosed are a platinum (Pt)-free, palladium (Pd)-yttrium (Y) alloy catalyst having superior oxygen reduction reaction activity and stability, a method for preparing the same, and a fuel cell including the catalyst. Since the Pt-free Pd—Y catalyst is inexpensive, it may be usefully applicable for fuel cells, particularly polymer electrolyte membrane fuel cells.

Abstract: Ultra-low magnetic susceptibility, biocompatible palladium-tin, palladium-aluminum, and palladium-tantalum alloys include at least 75 at % palladium, between about 3 and 20 at % tin, aluminum, or tantalum, respectively, and one or more other additives chosen from niobium, tungsten, molybdenum, zirconium, titanium, tin for non-palladium-tin alloys, aluminum for non-palladium-aluminum alloys, or tantalum for non-palladium-tantalum alloys, up to about 22 at % total.

Abstract: Disclosed are metal-containing precursors having the formula Compound (I) wherein: —M is a metal selected from Ni, Co, Mn, Pd; and —each of R-1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are independently selected from H; a C1-C4 linear, branched, or cyclic alkyl group; a C1-C4 linear, branched, or cyclic alkylsilyl group (mono, bis, or tris alkyl); a C1-C4 linear, branched, or cyclic alkylamino group; or a C1-C4 linear, branched, or cyclic fluoroalkyl group. Also disclosed are methods of synthesizing and using the disclosed metal-containing precursors to deposit metal-containing films on a substrate via a vapor deposition process.

Abstract: A network of nanowires may be used for a sensor. The nanowires are metallic, each nanowire has a thickness of at most 20 nm, and each nanowire has a width of at most 20 nm. The sensor may include nanowires comprising Pd, and the sensor may sense a change in hydrogen concentration from 0 to 100%. A device may include the hydrogen sensor, such as a vehicle, a fuel cell, a hydrogen storage tank, a facility for manufacturing steel, or a facility for refining petroleum products.

Abstract: Identifying a stable phase of a binary alloy comprising a solute element and a solvent element. In one example, at least two thermodynamic parameters associated with grain growth and phase separation of the binary alloy are determined, and the stable phase of the binary alloy is identified based on the first thermodynamic parameter and the second thermodynamic parameter, wherein the stable phase is one of a stable nanocrystalline phase, a metastable nanocrystalline phase, and a non-nanocrystalline phase.

Abstract: Proposed is a contact material constituting a slider for a fuel sender, the slider moving on a conductor in conjunction with a float moving in accordance with a liquid level, wherein the contact material includes 10 to 25 mass % of nickel and a balance of palladium. The present contact material is useful in the light of material cost in addition to corrosion resistance and durability. The fuel sender is useful for vehicles, such as FFV, using composite fuel of alcohol and the like. The present invention allows for producing a slider for a fuel sender having excellent corrosion resistance and abrasion resistance.

Abstract: An exhaust gas purification catalyst for removing CO or HC, which contains a carrier and an alloy of palladium and silver supported on this carrier.

Abstract: A device comprising a magnetic element, which comprises a magnetic material, wherein the magnetic element is adapted to absorb hydrogen to form hydride. The magnetic aspect of the system enhances the hydrogen storage. Also disclosed is a metal hydride element comprising a magnetic material and absorbed hydrogen. The magnetic element and the metal hydride element can be an electrode. Further disclosed are methods for making and using the electrode.

Abstract: The invention is directed to Pd-based metallic glass alloys useful in biomedical applications having no Ni or Cu. Exemplary metallic glass alloys are represented by AaBb{(Si)100-c(D)c}d, where A may be selected from Pd, and combinations of Pd and Pt, B may be selected from Ag, Au, Co, Fe, and combinations thereof, and D may be selected from P, Ge, B, S. Also, a, b, c and d are atomic percentages, and a ranges from about 60 to about 90, b ranges from about 2 to about 18, d ranges from about 5 to about 25, and c is greater than 0 and less than 100.

Abstract: Provided in one embodiment is a method of identifying a stable phase of an ordering binary alloy system comprising a solute element and a solvent element, the method comprising: determining at least three thermodynamic parameters associated with grain boundary segregation, phase separation, and intermetallic compound formation of the ordering binary alloy system; and identifying the stable phase of the ordering binary alloy system based on the first thermodynamic parameter, the second thermodynamic parameter and the third thermodynamic parameter by comparing the first thermodynamic parameter, the second thermodynamic parameter and the third thermodynamic parameter with a predetermined set of respective thermodynamic parameters to identify the stable phase; wherein the stable phase is one of a stable nanocrystalline phase, a metastable nanocrystalline phase, and a non-nanocrystalline phase.

Abstract: A dental alloy contains palladium (Pd) and indium (In) for CAD/CAM machining. The dental alloy can further include one component selected from the group consisting of gold (Au), silver (Ag), nickel (Ni), cobalt (Co), and platinum (Pt). The dental alloy has a yield strength of 250 MPa to 450 MPa, breaking elongation of 2% to 8%, metal-ceramic adhesion of 20 MPa to 70 MPa, coefficient of linear thermal expansion of 14.0×10?6/K to 17.0×10?6/K, or density of 8 g/cm3 to 15 g/cm3.

Abstract: A network of nanowires may be used for a sensor. The nanowires are metallic, each nanowire has a thickness of at most 20 nm, and each nanowire has a width of at most 20 nm. The sensor may include nanowires comprising Pd, and the sensor may sense a change in hydrogen concentration from 0 to 100%. A device may include the hydrogen sensor, such as a vehicle, a fuel cell, a hydrogen storage tank, a facility for manufacturing steel, or a facility for refining petroleum products.

Abstract: The instant invention relates to shaped transition metal particles, in particular in the form of a dispersion in an aqueous and/or organic medium, the manufacture thereof and their use as an infrared (IR) absorbing agent, an IR curing agent for coatings, an additive in conductive formulations, an antimicrobial agent or for sensoring organic and/or inorganic compounds. Further, the invention relates to dispersions comprising said shaped particles and an aqueous and/or organic medium, such as a thermoplastic or crosslinkable polymer, as well as to antimicrobial compositions and products.

Abstract: Provided by the present invention are a fine crystallite high-function metal alloy member, a method for manufacturing the same, and a business development method thereof, in which a crystallite of a metal alloy including a high-purity metal alloy whose crystal lattice is a face-centered cubic lattice, a body-centered cubic lattice, or a close-packed hexagonal lattice is made fine with the size in the level of nanometers (10?9 m to 10?6 m) and micrometers (10?6 m to 10?3 m), and the form thereof is adjusted, thereby remedying drawbacks thereof and enhancing various characteristics without losing superior characteristics owned by the alloy.

Abstract: Provided are resin-based and metal-based anti-thermally-expansive members each having small thermal expansion. More specifically, provided are an anti-thermally-expansive resin and an anti-thermally-expansive metal, each including a resin or a metal having a positive linear expansion coefficient at 20° C. and a solid particle dispersed in the resin or metal, in which the solid particle includes at least an oxide represented by the following general formula (1): (Bi1-xMx)NiO3 (1), where M represents at least one metal selected from the group consisting of La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, and In; and x represents a numerical value of 0.02?x?0.15.

Abstract: Electrode catalysts for fuel cells, a method of manufacturing the same, a membrane electrode assembly (MEA) including the same, and a fuel cell including the MEA are provided. The electrode catalysts include a first catalyst alloy containing palladium (Pd), cobalt (Co), and phosphorus (P), a second catalyst alloy containing palladium (Pd) and phosphorus (P), and a carbon-based support to support the catalysts.

Abstract: A metal particle which is a non-nucleated, spherical porous material having continuous open pores, and which is formed from dendritic crystals which have grown uniformly outward from the center without requiring a nucleating agent. A method for producing a metal particle which includes the steps of: mixing a metal salt and a polycarboxylic acid in a liquid phase; adding a reducing agent to the resultant mixture to deposit metal particles; and drying the deposited metal particles. The metal particle produced by the method, which is a non-nucleated, spherical porous material having continuous open pores, is unlikely to suffer bonding or aggregation of the metal particles and exhibits excellent dispersibility, and, when the metal particle is used in a conductive composition, such as a conductive paste, a cured product having satisfactory conduction properties can be obtained at a relatively low temperature, making it possible to easily control the specific gravity or resistance.

Abstract: A coating is provided to a conductor, and has a layered structure of a palladium layer. The palladium layer has a crystal plane whose orientation rate is 65% or more.

Abstract: Metal alloys for dental porcelain fusing and dental prosthetic appliances are provided. The metal alloy includes: gold (Au) in an amount that is greater than 0 and equal to or smaller than 35 weight %; silver (Ag) in an amount of 5 to 35 weight %; indium (In) in an amount of 6 to 40 weight %; palladium (Pd) in an amount of 30 to 70 weight %; and at least one element selected from the group consisting of boron (B), germanium (Ge), zirconium (Zr), silicon (Si) and iron (Fe) in a total amount that is greater than 0 and equal to or smaller than 5.0 weight %.

Abstract: Provided is a method for producing biodiesel fuel having an excellent oxidative stability and fluidity at low temperature, wherein the method provides selective hydrogenation of a poly-unsaturated fatty acid alkyl ester to the mono-unsaturated fatty acid alkyl ester while inhibiting the formation of the trans-isomer, and a biodiesel fuel composition. In the method for producing biodiesel fuel, a fatty acid alkyl ester prepared from fat and/or waste edible oil by transesterification reaction, and/or (2) a fatty acid alkyl ester treated by esterification reaction of a fatty acid is hydrogenated in the presence of a hydrogenation catalyst containing at least one of noble metals selected from those of Groups 8-10 in the periodic table under low hydrogen pressure.

Abstract: A porous catalyst layer formed from discrete particles of unsupported metal, wherein at least 80%, suitably at least 90%, of the discrete particles have a mass of from 1 to 1000 zeptograms, and wherein the catalyst layer has a metal volume fraction of less than 30% and a metal loading of less than 0.09 mg/cm2 is disclosed. The catalyst layer is suitable for use in fuel cells and other electrochemical applications.

Abstract: This invention relates to an electrode catalyst for a fuel cell comprising catalyst metal particles of noble metal-base metal-Ce (cerium) ternary alloy carried on carbon materials, wherein the noble metal is at least one member selected from among Pt, Ru, Rh, Pd, Ag and Au, the base metal is at least one member selected from among Ir, Co, Fe, Ni and Mn, and the relative proportion (i.e., the molar proportion) of noble metal:base metal:Ce (cerium) is 20 to 95:5 to 60:0.1 to 3. The electrode catalyst for a fuel cell inhibits deterioration of an electrolyte membrane or an electrolyte in an electrode catalyst layer, improves durability, and, in particular, improves the capacity for power generation in the high current density region.

Abstract: For the oxygen reduction reaction at the cathode of proton exchange membrane fuel cells, a metal alloy catalyst contains the metals Pd, M1 and M2 where M1 and M2 are different metals selected from Co, Fe, Au, Cr and W (but excluding the combination PdCoAu). Preferred ternary alloys for use as catalysts may be selected from PdCoCr, PdCoW, PdFeCr, PdFeW, PdCrW, PdWAu, PdCrAu, PdCoFe and PdFeAu. Compositional ranges that are specially effective are assessed by a high throughput physical vapor deposition method. Catalysts especially suitable for use in direct methanol fuel cells are identified.

Abstract: Methods of the invention allow rapid production of high-porous, large-surface-area nanostructured metal and/or metal oxide at attractive low cost applicable to a wide variety of commercial applications such as sensors, catalysts and photovoltaics.

Abstract: The instant invention relates to shaped transition metal particles, in particular in the form of a dispersion in an aqueous and/or organic medium, the manufacture thereof and their use as an infrared (IR) absorbing agent, an IR curing agent for coatings, an additive in conductive formulations, an antimicrobial agent or for sensoring organic and/or inorganic compounds. Further, the invention relates to dispersions comprising said shaped particles and an aqueous and/or organic medium, such as a thermoplastic or crosslinkable polymer, as well as to antimicrobial compositions and products.

Abstract: The present invention is directed to a precious metal recovery process in which an acid sulfidic feed material is subjected to acid pressure oxidation and an alkaline sulfidic feed material is subjected to alkaline pressure oxidation, with the discharge slurries from the pressure oxidation processes being combined to reduce neutralization requirements prior to precious metal recovery.

Abstract: The present invention relates to methods of making and using and compositions of metal nanoparticles formed by green chemistry synthetic techniques. For example, the present invention relates to metal nanoparticles formed with solutions of plant extracts and use of these metal nanoparticles in removing contaminants from soil and groundwater and other contaminated sites. In some embodiments, the invention comprises methods of making and using compositions of metal nanoparticles formed using green chemistry techniques.

Abstract: An electrocatalyst, suitable for use in a fuel cell, comprises an alloy having a single crystalline phase, wherein the alloy consists of 5-95 at % palladium, 5-95 at % ruthenium and less than 10 at % of other metals, provided that the alloy does not consist of 50 at % palladium and 50 at % ruthenium.

Abstract: The invention is directed to Pd-based metallic glass alloys useful in biomedical applications having no Ni or Cu. Exemplary metallic glass alloys are represented by AaBb{(Si)100-c(D)c}d, where A may be selected from Pd, and combinations of Pd and Pt, B may be selected from Ag, Au, Co, Fe, and combinations thereof, and D may be selected from P, Ge, B, S. Also, a, b, c and d are atomic percentages, and a ranges from about 60 to about 90, b ranges from about 2 to about 18, d ranges from about 5 to about 25, and c is greater than 0 and less than 100.

Abstract: The invention relates to metal nanoparticles and a process for the preparation thereof, in which a metal salt solution is reduced with a reducing agent in the presence of the derivatized polyethyleneimines or polyvinylamines. Metal salt solutions of two or more different metals can be reduced simultaneously or in succession, metal nanoparticles comprising two or more different metals being obtained. Preferred metals are silver, palladium, and platinum. Suitable reducing agents are, for example, formic acid, formaldehyde, diethanolamine, 5-pentenoic acid and sodium borohydride. Silver can be used in the form of silver oxide and/or silver nitrate, palladium in the form of alkali metal tetrachloropalladate or palladium(II) nitrate and platinum in the form of alkali metal tetrachloroplatinate or tetraamineplatinum(II) nitrate.

Abstract: A supported catalyst includes a carbonaceous catalyst support and first metal-second metal alloy catalyst particles adsorbed on the surface of the carbonaceous catalyst support, wherein the difference between a D10 value and a D90 value is in the range of 0.1 to 10 nm, wherein the D10 value is a mean diameter of a randomly selected 10 wt % of the first metal-second metal alloy catalyst particles and the D90 value is a mean diameter of a randomly selected 90 wt % of the alloy catalyst particles. The supported catalyst has excellent membrane efficiency in electrodes for fuel cells due to uniform alloy composition of a catalyst particle and supported catalysts that do not agglomerate.

Abstract: Disclosed are a noble metal nanowire oriented to a surface of a single crystalline substrate, which is prepared using a noble metal oxide, noble metal or noble metal halide as a precursor and, in addition, a method for preparation of the same. The present invention adopting a vapor phase transport method to prepare the noble metal nanowire without any catalyst has advantages of simplifying and reproducing processes of the method and enabling mass production thereof. The prepared nanowire exhibits high purity and quality and a complete crystalline state without defects and/or impurities. The prepared noble metal nanowire also has orientation to a surface of a single crystalline substrate and alignment of the nanowire as well as the orientation can be controlled.

Abstract: A Pd—Ag alloy system that utilizes internal oxidation by including a base metal addition of only Ga is provided. The Pd—Ag—Ga alloy is particularly well-suited for use in porcelain-fused-to-metal (PFM) applications because the alloy does not form a dark oxide upon heating. The high oxygen potential of the material ensures the development of a tenacious chemical bond with the porcelain when used in PFM applications. Moreover, the addition of gallium lowers the liquidus temperature of the alloy to improve castability and strengthens the alloy significantly.

Abstract: Various embodiments include a method of producing chemically pure and stably dispersed metal and metal-alloy nanoparticle colloids with ultrafast pulsed laser ablation. A method comprises irradiating a metal or metal alloy target submerged in a liquid with ultrashort laser pulses at a high repetition rate, cooling a portion of the liquid that includes an irradiated region, and collecting nanoparticles produced with the laser irradiation and liquid cooling. The method may be implemented with a high repetition rate ultrafast pulsed laser source, an optical system for focusing and moving the pulsed laser beams, a metal or metal alloy target submerged in a liquid, and a liquid circulating system to cool the laser focal volume and collect the nanoparticle products. By controlling various laser parameters, and with optional liquid flow movement, the method provides stable colloids of dispersed metal and metal-alloy nanoparticles. In various embodiments additional stabilizing chemical agents are not required.

Abstract: The invention relates to a high-hardness palladium alloy for manufacturing semi-finished products to be used in goldsmith's art or jewels to be obtained by the lost wax casting method, which comprises, in the following concentrations, expressed in thousandths by weight (‰): palladium from 948 to 990‰; copper from 0.0 to 50‰; indium from 0.0 to 50‰; gallium from 1 to 48‰; aluminium from 0.8 to 49.5‰; ruthenium from 0.0 to 50‰; rhenium from 0.0 to 50‰; silicon from 0.1 to 1.2‰; platinum from 0.0 to 40‰; nickel from 0.0 to 50‰; iridium from 0.0 to 40‰. In the manufacturing process of the above alloy, the component elements of said alloy are placed in a crucible, respectively made of zirconia, boron nitride or other ceramic material, and are melted using the induction method and using a protective atmosphere, respectively of argon, nitrogen or other inert gas.

Abstract: Alloy compositions, including devices and instruments that include the compositions, are disclosed. The compositions have high hardness, strength, corrosion resistance, and biocompatibility. The compositions can be used to manufacture, for example, medical devices and products.

Abstract: Gold solder compositions for assembling, repairing and sizing jewelry containing about 85% to 95% by weight palladium and an alloy mixture containing about 5% to 15% gallium and indium, in a weight ratio of approximately 7:3. The invention also provides a solder composition for assembling, repairing and sizing jewelry containing white gold and palladium, but not containing nickel. Such a solder contains gold, silver, copper, zinc, palladium, gallium and indium, whereby the gallium and indium is in a weight ratio of 6:4, 7:3 or 8:2, respectively.

Abstract: Methods and compositions for depositing a film on one or more substrates include providing a reactor with at least one substrate disposed in the reactor. At least one metal precursor is provided and at least partially deposited on the substrate to form a metal containing film.

Abstract: A silver free high noble dental alloy comprising at least 60 wt. % noble materials, where 40 wt. % of the material is gold; at least 2.5 wt. % gallium, at least about from 2 to 4 wt. % cobalt; and at least from about 0.01 to 0.25 wt. % lithium and/or boron; and a principal balance of palladium is provided. Dental products and methods of manufacturing dental products using such a high noble dental alloys are also provided.

Abstract: Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ heap leaching or lixiviants that include one or more blinding agents.

Abstract: A durable Pd-based alloy is used for a H2-selective membrane in a hydrogen generator, as in the fuel processor of a fuel cell plant. The Pd-based alloy includes Cu as a binary element, and further includes “X”, where “X” comprises at least one metal from group “M” that is BCC and acts to stabilize the ? BCC phase for stability during operating temperatures. The metal from group “M” is selected from the group consisting of Fe, Cr, Nb, Ta, V, Mo, and W, with Nb and Ta being most preferred. “X” may further comprise at least one metal from a group “N” that is non-BCC, preferably FCC, that enhances other properties of the membrane, such as ductility. The metal from group “N” is selected from the group consisting of Ag, Au, Re, Ru, Rh, Y, Ce, Ni, Ir, Pt, Co, La and In. The at. % of Pd in the binary Pd—Cu alloy ranges from about 35 at. % to about 55 at. %, and the at. % of “X” in the higher order alloy, based on said binary alloy, is in the range of about 1 at. % to about 15 at. %.

Abstract: The present invention has an object of providing a single-stage production method that enables the production of ultra fine metal nanoparticles and ordered alloy nanoparticles within solution. The production method includes irradiating a solution of a salt or complex of a metal element, thereby decomposing and/or reducing the salt or complex within the solution and generating metal nanoparticles having an average particle size within a range from 0.3 to 100 nm within the solution.

Abstract: This invention provides a method for atomic transformations carried out under conditions akin to chemical catalysis. Liquid and solid state catalysts are used in a two-step process. We have found that the high ionic/electric activity of concentrated sodium hydroxide solution in combination with heating is sufficient to induce atomic transformation and provide a solid phase catalyst of high aluminum and silicon content. This product when heated at a temperature of 1000° C. yields numerous elements of higher atomic masses.

Abstract: Crystalline noble metal nanostructures and methods for their preparation.