50 results about "Osmium" patented technology

A method may include operating a dehydrogenation process whereby a hydrocarbon-containing feed is converted to light olefins, wherein the dehydrogenation process utilizes a fluidized process catalyst that circulates between a reactor and a combustor. The method may comprise withdrawing the process catalyst from the dehydrogenation process, modifying the process catalyst to form a modified catalyst, and adding the modified catalyst back to the dehydrogenation process. The process catalyst may include from 0.1 wt. % to 10 wt. % of one or more metals chosen from gallium, indium, thallium, or combinations thereof, from 1 ppmw to 1000 ppmw of one or more metals chosen from platinum, palladium, rhodium, iridium, ruthenium, osmium, or combinations thereof, and at least 85 wt. % support. Modifying the process catalyst may include adding one or more of manganese, iron, chromium, or vanadium.

A method may include contacting a hydrocarbon-containing feed with a catalyst in a reactor to form an olefin-containing effluent, then at least partially separating the olefin-containing effluent from the catalyst. Passing the catalyst to a combustor and heating the catalyst by combusting a supplemental fuel. The supplemental fuel includes methane in an amount greater than or equal to 1 mol. %. Passing the catalyst from the combustor to the reactor, such that at least a portion of the catalyst continuously cycles between the reactor and the combustor. The catalyst includes from 0.1 wt. % to 10 wt. % of one or more metals chosen from gallium, indium, thallium or combinations thereof, from 5 ppmw to 1000 ppmw of one or more metals chosen from platinum, palladium, rhodium, iridium, ruthenium, osmium, or combinations thereof, from 100 ppmw to 30000 ppmw of chromium, and at least 85 wt. % support.

A catalyst suitable for dehydrogenation of hydrocarbons may include from 0.0005 wt.% to 0.1 wt.% of platinum, palladium, rhodium, iridium, ruthenium, osmium, or combinations thereof; from 0.1 wt.% to 10 wt.% of gallium, indium, thallium, or combinations thereof; from 0.1 wt.% to 5 wt.% of lanthanum, yttrium, or zirconium; at least 85 wt.% support, and from 0 wt.% to 0.001 wt.% cerium.

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.

An anode (1) for an electrochemical system, in particular an alkali metal secondary battery, comprises a current collector (2) and a nucleation layer (3) located on the current collector (2). On the nucleation layer (3) is an artificial SEI layer (4) which has at least one ta-C layer containing at least one dopant selected from the group of dopant elements comprising hydrogen, silicon, nitrogen, oxygen, silver, tin, zinc, antimony, lead, gold, platinum, bismuth, magnesium, potassium, sodium, calcium, nickel, aluminum, gallium, indium, boron, germanium, tellurium, ruthenium and osmium, wherein the total content of dopant elements is at least 0.1 atomic% and not more than 20 atomic%.

The application discloses a CT cathode tube cathode surface coating and a preparation method thereof. The coating is prepared by improving a magnetron sputtering process, using iridium (Ir) and osmium (Os) as metal targets, and depositing a metal coating with a thickness of 10-20 microns on a molybdenum base. The prepared metal coating has a bonding force to the base which can exceed 100 N, and the coating is dense and has good uniformity, and can be used as a cathode for exciting electrons on the surface of a cathode tube in a CT X-ray tube.

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.

The invention discloses an application of a titanium carbide loaded osmium metal hydrogen evolution and deuterium evolution catalyst in water electrolysis separation of hydrogen isotopes, a carrier of the hydrogen evolution and deuterium evolution catalyst is titanium carbide, an 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 the structure of the hydrogen and deuterium evolution catalyst. Osmium metal is loaded on a titanium carbide substrate, and hydrogen evolution selectivity is improved and energy consumption is reduced through strong interaction of metal and a carrier.

The invention relates to the technical field of osmic acid solution preparation, in particular to an osmic acid solution preparation device and a use method thereof, and solves the technical problems that in the prior art, when a highly toxic osmic acid ampoule bottle is manually treated, the exposure risk of an operator is high, and the dissolution speed of osmic acid crystals is low when the ampoule bottle is directly put into a ground bottle. The invention discloses an osmic acid solution preparation device and a use method thereof. The osmic acid solution preparation device comprises a glass shell, and a moving overturning and clamping assembly capable of clamping and automatically overturning an ampoule bottle, a bottle opening mechanism for breaking off the head of the ampoule bottle, a glass gas outlet pipe system for blowing dry gas into the bottle to transfer crystals and a cover closing mechanism for automatically closing a cover of a receiving bottle are arranged in the glass shell. The full-process automatic sealing operation of transferring the ampoule bottle filled with the osmic acid crystal from bottle opening, overturning and crystal purging to automatic cover closing of the ground bottle is realized, so that an operator is completely isolated from the highly toxic osmic acid crystal and steam thereof in the whole preparation process.

The disclosure relates to a catalyst suitable for electrochemical reduction reactions of one or more carbon oxides, comprising a nitride-doped multi-metallic material comprising a primary metal being copper and one or more secondary metals selected from silver, gold, platinum, palladium, ruthenium, iridium, osmium, and any mixture thereof, wherein the nitride-doped multi-metallic material comprises, as determined by XRD, copper, copper nitride and copper-Me alloy wherein Me is one of the secondary metals and to a gas diffusion electrode suitable for electrolysis of one or more carbon oxides comprising such a catalyst.

The invention relates to a novel functional material for X-ray protection, in particular to a liquid metal flexible shielding material and a preparation method and application thereof. The material comprises liquid metal and solid metal, the liquid metal serves as a solvent to be filled in gaps of the solid metal, the liquid metal is gallium, gallium indium, gallium indium tin, gallium indium tin zinc or mercury, and the solid metal is selected from one or more of indium, tin, gold, platinum, iridium, zirconium, niobium, molybdenum, ruthenium, osmium, rhenium, rhodium, tungsten, antimony, palladium, tantalum, hafnium, lutetium, lead, ytterbium, thulium, bismuth, silver, erbium, holmium, dysprosium, terbium, gadolinium, samarium, neodymium, lanthanum, praseodymium, cerium and europium. On the basis of compounding of the liquid metal solvent and the solid metal solute based on the liquid metal combinatology, the liquid metal and the solid metal are jointly used for protecting X-ray radiation, the comprehensive performance of X-ray protection is improved, and meanwhile the variety and number range of selectable metal elements is widened.

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 cemented carbide comprising a plurality of tungsten carbide particles and a binder phase, wherein the cemented carbide comprises a total of 80% by volume or more of the tungsten carbide particles and the binder phase, the cemented carbide comprises 0.1 vol % or more and 20 vol % or less of the binder phase, the cemented carbide comprises at least one first element selected from the group consisting of boron, aluminum, silicon, iron, nickel, germanium, ruthenium, rhenium, osmium, iridium, and platinum, the cemented carbide comprises a total of 0.01 atomic % or more and 10 atomic % or less of the first element, the binder phase comprises 50% by mass or more of cobalt, the first element is segregated in a first interface region between the tungsten carbide particles adjacent to each other, and the first element is present at a C site of tungsten carbide in the first interface region.

The present invention relates to a method of producing adipic acid, including a step (hydrogenation step) of reacting 3-hydroxyadipic acid-3,6-lactone with hydrogen in an aqueous solvent in a presence of a hydrogenation catalyst. The hydrogenation catalyst preferably includes one kind or two or more kinds of transition metal elements selected from the group consisting of palladium, platinum, ruthenium, rhodium, rhenium, nickel, cobalt, iron, iridium, osmium, copper, and chromium.

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.

The application relates to a trace noble metal modified NiMo catalyst and a preparation method and application thereof, relates to a bifunctional molybdenum-nickel-based electrocatalyst, and aims to solve the technical problems of high cost and low efficiency of existing water electrolysis hydrogen production catalysts. The catalyst is micrometer-level square columnar molybdenum-nickel alloy microcrystals in situ grown on a foam nickel substrate, and the surface of the molybdenum-nickel alloy microcrystals is attached with noble metal elemental osmium, ruthenium or iridium. The preparation method comprises the following steps: placing the foam nickel in a mixed solution of nickel nitrate and ammonium molybdate for hydrothermal reaction, then dropping a noble metal salt solution on the surface of the foam nickel, and annealing at high temperature to obtain the trace noble metal modified NiMo catalyst. The catalyst has a HER side overpotential of only 11.6 mV and an OER side overpotential of only 243.8 mV under an electric current density of 10 mAcm ‑2 2 in alkaline seawater. The HER stability in seawater is over 1000 h, the OER stability is over 1000 h, and the catalyst can be used in the field of seawater electrolysis hydrogen production.

The invention discloses an imipenem colorimetric detection method based on osmium nano-enzyme inhibition, and belongs to the technical field of analytical chemistry and biosensing. The method comprises the following steps: catalyzing H2O2 to oxidize TMB (Tetramethylbenzidine) to generate a blue product by utilizing the efficient peroxidase-like activity of alginate-modified osmium nano-enzyme (algin-Os); after ring opening of imipenem under an acidic condition, the catalytic activity of alginate-Os is specifically inhibited through dual mechanisms of metal-ligand coordination and free radical scavenging, so that the color development intensity of a solution is reduced, and the inhibition degree and the concentration of imipenem are in a dose-dependent relationship. According to the detection method, the linear range is 7.5 ng / mL-1120 ng / mL, the detection limit is as low as 2.5 nmol / L, the specificity is high, the anti-interference capacity is high, and the adding standard recovery rate of a serum sample is 90.5%-99.2%. The method is simple and convenient to operate, does not need complex instruments, is rapid in detection, can realize quantitative detection of imipenem, is suitable for clinical treatment drug monitoring, bedside detection and field detection in areas with limited resources, and has a relatively wide application prospect.

The invention discloses a noble metal catalyst and a preparation method and application thereof and belongs to the technical field of catalysts. The catalyst comprises a carrier and an active component, wherein the active component is at least one of noble metals ruthenium, rhodium, palladium, silver, iridium, platinum, gold and osmium; the carrier is at least one of a carbon carrier, a metal oxide carrier, an adsorbent, a semiconductor, a ceramic, a natural mineral and a covalent organic framework compound, and the surface area of the carrier is greater than or equal to 200cm < 2 > / g. And the mass percent of the active component in the catalyst is 0.001%-50%. The noble metal catalyst obtained by the invention shows high selectivity to formation of a single product, and FE of ethanol reduced from CO2 reaches 90% or above. The noble metal catalyst has excellent oxygen evolution activity and stability. On the other hand, the preparation method of the noble metal catalyst provided by the invention is simple and low in energy consumption, and can be used for preparing a monatomic catalyst with high dispersion degree or noble metal nanoparticles with lower loading capacity.

The invention relates to a sorbent with alkyl or aryl isothiocyanate ligands and to the removal of platinum group elements (PGEs: ruthenium, rhodium, palladium, osmium, iridium, platinum) from organic, water-immiscible solutions by binding to the sorbent. The invention further relates to the use of the sorbent for the removal of platinum group elements from organic, water-immiscible solutions and to a process for the preparation of the sorbent.

An yttrium-containing structure comprises: (a) a substrate layer comprising a metal alloy, a ceramic material, a ceramic composite, or a combination thereof; (b) a bond-coat layer disposed on the substrate layer, or on an optional interlayer that is on the substrate layer, wherein the bond-coat layer comprises yttrium and a noble metal selected from the group consisting of platinum, iridium, rhenium, ruthenium, rhodium, osmium, and / or palladium; (c) a thermally grown oxide layer disposed on the bond-coat layer, wherein the thermally grown oxide layer comprises yttrium oxide; and (d) optionally, a top-coat layer disposed on the thermally grown oxide layer, wherein the top-coat layer comprises a metal oxide, a metal pyrochlore, or a metal silicate. Yttrium may be replaced with lutetium, in which the bond-coat layer comprises lutetium and a noble metal (e.g., Pt or Ir). A mixture of yttrium and lutetium may also be employed.

The application provides a multi-component platinum-bismuth-based intermetallic ordered nanosheet and a preparation method and application thereof, and relates to the technical field of multi-metal alloy catalysts.The multi-component platinum-bismuth-based intermetallic ordered nanosheet provided by the application comprises platinum elements, bismuth elements and auxiliary metal elements, the auxiliary elements comprise 1-4 kinds of iridium elements, ruthenium elements, osmium elements, rhodium elements, tin elements and lead elements, and the multi-component platinum-bismuth-based intermetallic ordered nanosheet has an intermetallic ordered structure and a two-dimensional nanosheet morphology.The multi-component platinum-bismuth-based intermetallic ordered nanosheet provided by the application is structurally stable, is applied to a fuel cell as a catalyst, and has excellent electrocatalytic performance, including formic acid oxidation electrocatalytic performance and alcohol oxidation electrocatalytic performance.The application provides a preparation method of the multi-component platinum-bismuth-based intermetallic ordered nanosheet, the preparation conditions are mild and simple to operate, and problems such as catalyst agglomeration caused by high-temperature calcination to transform an ordered phase are effectively avoided.

Olefinic materials may be made by dehydrogenation utilizing a catalyst. The catalyst may include from 0.0005 wt.% to 0.1 wt% of platinum, palladium, rhodium, iridium, ruthenium, osmium, or combinations thereof; from 0.1 wt.% to 10 wt.% of gallium, indium, thallium, or combinations thereof; from 0.1 wt.% to 5 wt.% of one or more non-redox-active elemental additives; and at least 85 wt.% of support.

To provide a catalyst having high selectivity of carbon monoxide even when the conversion rate of carbon dioxide becomes high.SOLUTION: The catalyst is used to reduce carbon dioxide. In the catalyst, alloy particles are supported on a metal oxide support. The alloy particles include a first metal and a second metal. The first metal is one or more selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium, and platinum. The second metal is one or more selected from the group consisting of vanadium, chromium, manganese, iron, and cobalt.SELECTED DRAWING: None

The invention relates to the field of application of surface coatings, and provides the use of a substrate coating for reducing material leakage, said object being coated with a coating at least partially applied on the object, said coating comprising an at least partially covered silver-containing layer, said object optionally comprising an area without said layer, the coating comprises metal particles applied on the layer and optionally on a region without the layer, the 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 range of 0.01-8 [mu] g / cm2. Advantages include that leakage of latex allergen substances such as metal ions can be reduced when the coating is biocompatible and antimicrobial. In addition, blood coagulation can be reduced.

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.

A method may include contacting a hydrocarbon-containing feed with a catalyst in a reactor to form an olefin-containing effluent, then at least partially separating the olefin-containing effluent from the catalyst. Passing the catalyst to a combustor and heating the catalyst by combusting a supplemental fuel. The supplemental fuel includes methane in an amount greater than or equal to 1 mol. %. Passing the catalyst from the combustor to the reactor, such that at least a portion of the catalyst continuously cycles between the reactor and the combustor. The catalyst includes from 0.1 wt. % to 10 wt. % of one or more metals chosen from gallium, indium, thallium or combinations thereof, from 5 ppmw to 1000 ppmw of one or more metals chosen from platinum, palladium, rhodium, iridium, ruthenium, osmium, or combinations thereof, from 100 ppmw to 30000 ppmw of iron, and at least 85 wt. % support.

The invention discloses a preparation method of a full-proportion osmium-platinum solid solution material. The technical problems that an existing preparation method is complex in process, long in synthesis period and incapable of achieving full-proportion preparation are mainly solved. The method comprises the following steps: 1, preparing an osmium-platinum precursor solution; 2, sequentially adding a catalyst carrier and a solvent into the osmium-platinum precursor solution, and uniformly stirring to obtain a mixed solution; 3, within the temperature range from room temperature to the boiling point of the solvent, adding a reducing agent into the mixed solution, carrying out heat preservation reaction, and then cooling to room temperature to obtain turbid liquid; and 4, sequentially centrifuging, washing and drying the turbid liquid to obtain the osmium-platinum solid solution material. The method is simple in process and high in preparation efficiency, and the osmium-platinum solid solution material with a full proportion can be obtained.

The invention discloses application of a nitrogen-containing surfactant as a platinum group metal precipitator and a platinum group metal recovery method, and belongs to the technical field of precious metal secondary resource recycling. The method comprises the following steps: adding a water-soluble nitrogen-containing surfactant into an acidic aqueous solution containing platinum group metal ions, carrying out a stirring reaction, standing and settling, and collecting a precipitate by adopting centrifugation or filtration; and then carrying out high-temperature heat treatment in a specific atmosphere to obtain the high-purity platinum group metal elementary substance. The nitrogen-containing surfactant is selected from one or a combination of more of quaternary ammonium salt containing aromatic side chain or short chain alkyl, alkyl quaternary ammonium salt with specific anions, amine oxide type surfactant and betaine type surfactant, and is subjected to ionic association with platinum group metal complex anions and induces aggregation and sedimentation; and high-selectivity capture of ruthenium, rhodium, palladium, osmium, iridium and platinum is realized. The method provided by the invention still has stable precipitation efficiency in a wide acidity range, and can reduce the consumption of the precipitator and the residual noble metal in the tail liquid.

Provided is a cemented carbide comprising a plurality of tungsten carbide particles and a binder phase, the cemented carbide containing the tungsten carbide particles and the binder phase in a total amount of 89-100 vol%, and the binder phase in an amount of 0.5-25 vol%, wherein: the binder phase contains cobalt in an amount of 40 mass% or greater, and further contains at least one first element selected from the group consisting of silicon, phosphorus, germanium, tin, rhenium, ruthenium, osmium, iridium, and platinum; and in a rectangular measurement region, which is provided in a TEM-HAADF image obtained by observing a (110) plane of the cobalt having an fcc structure by a magnification of 5 million times using an atomic resolution transmission electron microscope, and in which 31 cobalt atoms are contained in a first direction and 5 to 10 cobalt atoms are contained in a second direction orthogonal to the first direction, a frequency of mismatch of an atomic array of the cobalt atoms is from 8% to 30.0%.

A cemented carbide provided with a plurality of tungsten carbide particles and a binding phase, the cemented carbide containing a total of 89 vol% or more of the tungsten carbide particles and the binding phase, the cemented carbide containing 1.5 vol% or more and 23 vol% or less of the binding phase, the binding phase containing 40 mass% or more of cobalt, the binder phase further contains at least one first element selected from the group consisting of silicon, phosphorus, germanium, tin, rhenium, ruthenium, osmium, iridium, and platinum, the first element being not segregated in a first interface region between the tungsten carbide particles adjacent to each other, and being not segregated in a second interface region between the tungsten carbide particles adjacent to each other. In a second interface region between the tungsten carbide particles and the bonding phase adjacent to each other, the first element is not segregated.