12 results about "Osmium" patented technology

There is provided a method for decreasing leakage of matter from an object to a surrounding, said object being coated with a coating at least partially applied on the object, said coating comprising an at least partially covering layer comprising silver, said object optionally comprising area(s) without said layer, said coating comprising metal particles applied on the layer and optionally on areas without said layer, said metal particles comprising palladium and at least one metal selected from the group consisting of gold, ruthenium, rhodium, osmium, iridium, niobium, neodymium and platinum and wherein the amount of the metal particles is in the interval 0.01-8 μg / cm . Advantages include that leakage of matter such as latex allergens of metal ions can be reduced while the coating is both biocompatible and antimicrobial. Further, the blood clotting can be reduced.

The application discloses application of a titanium carbide loaded osmium metal hydrogen evolution and deuterium evolution catalyst in water electrolysis separation of hydrogen isotopes, the carrier of the hydrogen evolution and deuterium evolution catalyst is titanium carbide, the active component is osmium metal loaded on the carrier, and the loading amount of the osmium metal is 7-15% of the mass of the carrier. The hydrogen isotope separation efficiency is improved by improving the composition and structure of the hydrogen evolution and deuterium evolution catalyst. The osmium metal is loaded on the titanium carbide base, the hydrogen evolution selectivity is improved and the energy consumption is reduced through strong mutual action of the metal-carrier.

Provided is a method for producing a fluorene compound (a fluorene diol compound having a cyclohexane structure) with excellent yield and purity. A method for producing a fluorene compound, comprising a hydrogenation step of hydrogenating a fluorene compound represented by the following formula (1) in the presence of a catalyst and a solvent to obtain a fluorene compound represented by the following formula (2), the catalyst being at least one metal catalyst selected from the group consisting of ruthenium, palladium, rhodium, osmium, iridium, platinum, and nickel, and the solvent being at least one selected from the group consisting of an ether-based solvent and an ester-based solvent. [In formulas (1) and (2), each of m independently represents an integer of 0 or 1, and each of n independently represents an integer of 0 to 6.]

A membrane-catalyst layer structure is provided that can maintain good power generation performance or good electrolysis performance for a long time, respectively. A membrane-catalyst layer structure is provided in which a first catalyst layer and a second catalyst layer are sandwiched opposite each other by a membrane comprising at least a polymer electrolyte membrane. The first and second catalyst layers comprise platinum and / or iridium as a first metal, and the first and / or second catalyst layers further comprise at least one element selected from gold, silver, copper, nickel, palladium, cobalt, rhodium, iron, ruthenium, and osmium as a second metal. The membrane comprises a compound N having a nitrogen-containing heterocycle.

This invention discloses a method for preparing functional drinking water from stony meteorites, including its water quality characteristics and efficacy, belonging to the field of natural meteorite water treatment technology. The invention uses stony meteorites (including tektites) that have been tested and found to be free of harmful heavy metals such as lead, mercury, arsenic, and cadmium. The water is prepared by soaking the meteorite in room temperature cold water for 24-72 hours in a sealed container. The product meets the GB5749-2022 "Standards for Drinking Water Quality". Compared to conventional tap water, the meteorite water of this invention has lower color and turbidity, better total hardness, and is rich in calcium, magnesium, and potassium minerals, as well as a high content of metasilicic acid. It also contains cosmogenic elements such as iridium, osmium, and ruthenium, along with their specific isotope ratios. This invention fills the technological gap in preparing functional drinking water from natural stony meteorites. The product can be used to help maintain vascular health, improve microcirculation, and maintain electrolyte balance in the preparation of functional drinking water, possessing high value for health applications and industrial promotion.

Light olefins can be prepared by dehydrogenation using a catalyst. The catalyst may comprise: 0.1 wt% to 10 wt% of one or more metals selected from gallium, indium, thallium, or combinations thereof; 5 ppmw to 500 ppmw of one or more metals selected from platinum, palladium, rhodium, iridium, ruthenium, osmium, or combinations thereof; 0.01 wt% to 0.8 wt% of cerium; and at least 85 wt% of a support.

The application belongs to the technical field of tungsten-rhenium alloy, and particularly relates to a tungsten-rhenium alloy wire and a preparation method thereof. The preparation method of the tungsten-rhenium alloy wire comprises the following steps: adding ammonium rhenate, rare earth nitrate, osmium-rhenium-boron compound and tungsten powder into water, stirring under heating conditions until a viscous paste is obtained, and obtaining a mixed powder after drying; pre-sintering the mixed powder under a hydrogen atmosphere, then roasting, and then performing spheroidization treatment to obtain a pre-alloy powder; performing static pressing on the pre-alloy powder, calcining the pre-alloy powder under a hydrogen atmosphere to obtain a sintered blank, then performing rotary swaging on the sintered blank, and then performing drawing, electrolytic cleaning and annealing to obtain the tungsten-rhenium alloy wire. The application simultaneously introduces the osmium-rhenium-boron compound and the medium and heavy rare earth elements into the tungsten-rhenium alloy matrix, and realizes the synergistic improvement of the normal-temperature mechanical property, high-temperature strength and oxidation resistance.

The application discloses a catalyst, a preparation method thereof and application of the catalyst in treatment of volatile organic matters containing sulfur. The catalyst comprises a honeycomb carrier and a catalytic material coated on the surface of the carrier; the catalytic material comprises an active component, an auxiliary agent, a sulfur conversion agent and a matrix; the active component is selected from at least one of platinum, palladium, osmium, iridium, ruthenium and rhodium in a coordination unsaturated oxidation state; the mass of the matrix is 5-30% of the mass of the catalyst; and the mass of the active component is 0.3-5% of the mass of the matrix. The catalyst has high catalytic activity and stability under high air speed conditions; the preparation process is simple, the manufacturing cost is low; the catalyst has good hydrogen sulfide resistance, small resistance drop and long service life.

The present invention relates to a method of preparing a medical device or a medical component comprising a material body containing an amorphous alloy. The method comprises the steps of: (a) providing a starting material body comprising an amorphous alloy, the amorphous alloy comprising: i. a primary alloying component selected from the group consisting of titanium copper (TiCu) and zirconium copper (ZrCu), and ii. one or more secondary alloying components comprising at least one noble metal selected from the group consisting of ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), and combinations thereof, and (b) subjecting the starting material body to an etching treatment using an etching solution that dissolves at least one alloying element of the primary alloying component i) at a higher dissolution rate than at least one noble metal of the secondary alloying components ii).

The application discloses an extraction method for extracting platinum group metals, and relates to the technical field of precious metal recovery; the extraction method comprises the following steps: taking a platinum group metal concentrate for pretreatment, slurring the pretreated platinum group metal concentrate by using a sodium chlorate solution with a concentration of 0.8-1.2 mol / L, controlling the solid-liquid ratio of the slurring system to be 1:3-1:5 (g / mL), stirring the slurring system at a stirring speed of 150-200 r / min and a temperature of 25-35 DEG C for 20-30 min, and obtaining a uniform slurring liquid; the slurring liquid obtained in the step S1 is transferred into a distillation reactor, heated to 90-95 DEG C and kept, and dilute sulfuric acid with a concentration of 1-3 mol / L is slowly added at a rate of 10-20 mL / min; S3, the temperature in the distillation reactor is kept at 90-95 DEG C, and the distillation is continuously stirred for 2.0 h under normal pressure, and the volatilized osmium and ruthenium tetroxide are collected through a tail gas absorption device during the distillation; the technical scheme provided by the application can effectively improve the recovery efficiency and recovery rate of ruthenium and osmium in the platinum group metal ore.