431 results about "Iridium" patented technology

The invention discloses a high-precision point iridium welding device and process, and relates to the technical field of pen point welding. The device comprises a conveying assembly capable of moving along an annular path, a welding assembly arranged below the conveying path and positioning tools arranged corresponding to conveying blocks. The conveying assembly comprises a plurality of conveying blocks, and the positioning tool is used for inserting a to-be-welded pen point base material; the welding assembly comprises a hopper, a feeding pipe coaxially connected with the hopper in a sliding mode, an electrode ring fixed to the top end of the feeding pipe and an inverted-cone-frustum-shaped iridium particle groove formed in the top end. The hopper can be filled with iridium particles to be welded, the feeding pipe can ascend and descend in the vertical direction, and the iridium particle groove can bear one iridium particle. Through cooperation of the conveying block and the positioning tool, quick assembly and feeding of the pen point base material are facilitated, the feeding difficulty is reduced, and manual feeding is more labor-saving.

The invention discloses a titanium-based-iridium tantalum oxidation coating anode and a preparation method and application thereof, and belongs to the technical field of anode preparation, and the preparation process of the titanium-based-iridium tantalum oxidation coating anode comprises the steps that a titanium substrate is brushed with a solution containing a tantalum source A, then sintering is conducted, brushing-sintering is repeated, and a tantalum-coated titanium substrate is obtained; the tantalum-coated titanium substrate is brushed with the iridium-tantalum oxidation coating liquid, then sintering is carried out, and brushing-sintering is repeated, so that the tantalum-coated titanium substrate is obtained; the iridium-tantalum oxidation coating liquid contains a tantalum source B, an iridium source and a zirconium source; in the iridium tantalum oxidation coating liquid, the mass ratio of tantalum to iridium is (6-7): (4-5), according to the preparation method provided by the invention, through two times of brushing, the tantalum content in the titanium-based-iridium tantalum oxidation coating anode is more than 5% greater than the iridium content, and when the titanium-based-iridium tantalum oxidation coating anode is used for an alkaline citric acid electroplating system, the decomposition of a complexing agent can be effectively inhibited, the components of the electroplating liquid are maintained to be stable, so that the quality of a plating layer is ensured, and the service life of the plating layer is prolonged. The maintenance cost of the plating solution is reduced and the service life is prolonged.

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.

The invention belongs to the technical field of preparation of electrocatalytic oxygen evolution catalysts, and particularly discloses a doping regulation type ruthenium-iridium-based electrocatalytic oxygen evolution catalyst and a preparation method thereof.The preparation method comprises the following steps that S1, ruthenium salt, iridium salt and doped metal salt are dispersed in a solvent, the doped metal salt is selected from one or more of yttrium salt, strontium salt, potassium salt, calcium salt, magnesium salt, scandium salt, gallium salt and aluminum salt; s2, preparing a precursor mixture; s3, performing heat treatment to obtain a solid product; and S4, washing and drying to obtain the metal element doped ruthenium-iridium-based electro-catalytic oxygen evolution catalyst. According to the doping regulation type ruthenium-iridium-based electro-catalysis oxygen evolution catalyst and the preparation method thereof, the process is simple, the universality is high, doping of multiple elements can be achieved only by replacing the doped metal salt, and the obtained catalyst has excellent acidic water electrolysis oxygen evolution activity and long circulation stability; and excessive phase splitting of the Y element and excessive lattice distortion of other elements can be avoided.

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.

A process for producing amines by reductive amination, the process includes introducing a feed stream, the feed stream comprising an amino alcohol and a reducing agent, and hydrogen in a reaction zone of a reactor, and contacting the feed stream with a catalyst in the reaction zone. A hydrogen flow rate into the reaction zone is adjusted, and a product stream comprising ethyleneamines is extracted. The catalyst includes a carrier component selected from alumina, silica, and combinations thereof; and an active component having a first metal, a second metal, and a third metal. The first metal is selected from cobalt, nickel, and copper, the second metal is selected from rhenium, ruthenium, chromium, zinc, sodium, calcium, magnesium, strontium, lithium, potassium, barium, cesium, lanthanum, tungsten, iron, silver, titanium, manganese, aluminum, rhodium, platinum, palladium, iridium, and combinations thereof, and the third metal is niobium.

The application relates to a high-conductivity and high-activity Ir@TiO2 anode catalyst, a preparation method and application thereof in a proton exchange membrane electrolytic cell, and belongs to the technical field of inorganic functional catalyst materials. The iridium source and the titanium source are mixed at room temperature, a reducing agent magnesium diboride is added, the mass ratio of the magnesium diboride and the iridium source is 2:1, the mass ratio of the titanium source and the iridium source is 1-100:1; then the mixture is placed in a high-temperature and high-pressure reaction kettle, and is reacted at 80-200 DEG C for 10 min-4 h, and the high-conductivity, high-activity and easily enlarged Ir@TiO2 anode catalyst is obtained after being reduced to room temperature. The obtained Ir@TiO2 anode catalyst is dispersed in a mixed solution of water and ethanol with a volume ratio of 1:1, is prepared into slurry, is prepared into a membrane electrode through a coating means, and is assembled in a PEM electrolytic cell, and when the iridium load is 0.5 mg / cm 2 , the high activity and stability are still maintained.

The invention relates to a carbon-supported noble metal ordered alloy electrocatalyst capable of realizing mass production. The electrocatalyst comprises a carbon carrier and small-size noble metal ordered alloy nanoparticles loaded on the carrier, the loading capacity of the alloy is 20 to 90 weight percent; the average particle size of the precious metal ordered alloy nanoparticles is 1-10 nm; the noble metal ordered alloy comprises an alloy consisting of a noble metal and at least one different transition metal M; wherein the noble metal is platinum, palladium, iridium, rhodium or ruthenium. The method is used for solving the problem that the size of catalyst particles becomes large in the high-temperature ordering process, high metal loading capacity is achieved, the feed ratio is increased to 60 times, successful synthesis of the catalyst can be achieved on the gram scale level, and the method can be popularized to actual production to achieve large-scale production.

The invention provides a catalyst for maleic acid water phase hydrogenation as well as a preparation method and application thereof. The catalyst comprises a carrier, an active metal component and a nitrogen-doped carbon layer, wherein the nitrogen-doped carbon layer is formed by shrinking and carbonizing melamine and formaldehyde in pores of the carrier loaded with the active metal component, and the active metal component is coated with the nitrogen-doped carbon layer; the active metal component is selected from at least one of palladium, ruthenium, gold, rhodium and iridium, and the carrier is a spherical or granular porous material. The catalyst disclosed by the invention comprises the nitrogen-doped carbon layer formed by shrinking melamine and formaldehyde in pores of the carrier loaded with the active metal components and carbonizing, so that the active metal components of specific types can be promoted to be uniformly dispersed in the catalyst structure, and the catalytic performance is improved; meanwhile, by combining the effect of the carrier, the mechanical strength of the catalyst is effectively improved, so that the catalyst can still maintain high activity after being used in an acid environment for a long time, and the maleic acid water-phase hydrogenation reaction can be efficiently catalyzed in a long-life manner.

The invention belongs to the field of analytical chemistry, and particularly discloses a method for determining trace precious metals in copper-nickel flotation tailings. According to the method, trace precious metal in the tailings is enriched through a nickel matte assaying method, and nickel matte alloy rich in precious metal is formed; the nickel matte alloy is inlaid or crushed and doped with carbon to prepare a sample meeting the measurement requirement of the glow discharge mass spectrometry, and the content of the noble metal in the sample is measured and converted by adopting the glow discharge mass spectrometry. The method effectively solves the problems of low precious metal content in tailings and large fluctuation of detection results, improves the detection accuracy and stability, and is suitable for determination of trace precious metals such as gold, silver, platinum, palladium, rhodium and iridium.

The electron source is provided with: an electron emission unit containing an alloy of iridium and a rare earth element; a support part made of metal; and a joining part that joins the electron emission part and the support part. The bonding portion has a coating layer containing iridium and the metal in the support portion, and the coating layer contains iridium and the metal in the support portion.

This invention discloses an upflow electrochemical treatment device and method for treating wastewater containing hexavalent chromium. The device includes a cylindrical inner reaction chamber and a double-layer reaction chamber. The inner reaction chamber contains a mesh-like ruthenium-iridium-titanium anode and a carbon fiber felt membrane cathode. The double-layer reaction chamber includes an external overflow chamber and an internal upflow chamber. The method includes the following steps: S1, preliminary preparation; S2, wastewater injection; S3, continuous wastewater treatment; S4, detection. This invention mainly uses an upflow electrochemical water purification membrane for wastewater treatment, which can efficiently reduce highly toxic hexavalent chromium to less toxic trivalent chromium, effectively reducing the toxicity of the wastewater. Simultaneously, it utilizes the oxygen released during the reduction of hexavalent chromium to achieve the simultaneous generation of hydrogen peroxide, improving resource utilization and reducing treatment costs.

The invention discloses an iridium-ruthenium diatom / sponge nickel composite material, a preparation method thereof and application of the iridium-ruthenium diatom / sponge nickel composite material in alkaline electro-catalytic hydrogen evolution. The preparation method comprises the following steps: weighing nickel acetate, dissolving hydrazine hydrate, chloroiridic acid and a ruthenium trichloride aqueous solution in deionized water to prepare a mixed solution, placing the mixed solution in a high-pressure reaction kettle, and carrying out a hydrothermal reaction to obtain the iridium-ruthenium diatom / sponge nickel composite material electrocatalyst. Compared with an original sponge nickel electrocatalyst, the iridium ruthenium diatom / sponge nickel composite material prepared by the invention has better alkaline electrocatalytic hydrogen evolution performance; the method has the advantages that the acidity of chloroiridic acid enables part of Ni atoms to be dissolved out to generate Ni vacancies, so that iridium-ruthenium diatomic nucleation sites are provided. The composite material can synergistically catalyze alkaline hydrogen evolution, the mechanism of the composite material provides alkaline H2O cracking sites for nickel sites, active hydrogen species are obtained, rapid desorption of hydrogen protons is further achieved through iridium-ruthenium diatoms, and therefore more excellent alkaline electrocatalytic hydrogen evolution performance is obtained.

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 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.

This invention discloses a proton exchange membrane hydrogen pump anode and its application. The anode includes an anode sheet and a catalyst composited on the anode sheet. The catalyst includes a support and a first metal and a second metal composited on the support. The first metal is selected from one or more of platinum, iridium, palladium, and ruthenium; the second metal is selected from one or more of iron, cobalt, nickel, molybdenum, and vanadium. The first metal serves as the main active center for the hydrogen oxidation reaction, and the second metal can regulate the electronic structure of the first metal, thereby reducing the adsorption of carbon monoxide at the active site or promoting its oxidative removal. The synergistic effect of the two metals allows the anode containing the catalyst to maintain high hydrogen oxidation activity and stability in hydrogen fuel containing carbon monoxide, thereby improving the carbon monoxide poisoning resistance of the proton exchange membrane hydrogen pump containing the anode.

The invention relates to a preparation method and application of an amorphous IrLa spherical oxide catalyst, and the preparation method comprises the following steps: S1, dissolving an iridium salt and a lanthanum salt in water to obtain a precursor salt solution; s2, adding a reducing agent into the precursor salt solution, carrying out a hydrothermal reaction at 100-220 DEG C, and separating a solid to obtain an intermediate material; the reducing agent is selected from one or more of citric acid and citrate; and S3, carrying out heating treatment on the intermediate material in an aerobic environment, and carrying out acid pickling and drying on a heating product to obtain the amorphous IrLa spherical oxide catalyst. The preparation method is simple to operate, controllable and good in repeatability, and the amorphous IrLa spherical oxide catalyst prepared by the preparation method is composed of nano-particles, is high in uniformity, small in particle size, good in surface continuity and free of agglomeration phenomenon, has excellent acidic OER catalytic performance and stability, and is suitable for industrial production. Good application prospects are realized in the aspect of hydrogen production by electrolyzing water.

The invention relates to the technical field of water electrolysis hydrogen production, and discloses a PdIr / PdO catalyst and a preparation method thereof.The catalyst comprises PdO and PdIr alloy, PdO serves as a carrier, PdIr alloy metal active components are loaded on the PdO carrier, the loading amount of the PdIr alloy on PdO ranges from 30 wt% to 60 wt%, and the atom molar ratio of Pd to Ir of the PdIr alloy is 1: 1-0.5. The preparation method of the catalyst comprises the following steps: S1, respectively weighing an iridium source, a palladium source and molten salt according to a required stoichiometric ratio, grinding and mixing; s2, calcining the ground mixture in a carbon dioxide atmosphere to obtain impurity-containing solid powder; and S3, dispersing the obtained impurity-containing solid powder in a sulfuric acid solution, stirring and pickling, carrying out centrifugal separation, carrying out vacuum drying, and collecting purified solid powder to obtain the PdIr / PdO catalyst. According to the technical scheme, the purposes of improving the stability of the catalyst, reducing the loading capacity of noble metal Ir and weakening the agglomeration driving force among particles in the preparation process of the catalyst are achieved.

The application discloses a precious metal embedded porous carbon coated honeycomb ceramic monolithic catalyst and application thereof. The liquid phenolic resin polymer containing chloroplatinic acid is uniformly coated on the surface of the cordierite honeycomb ceramic through impregnation treatment; in an oxygen-nitrogen mixed atmosphere, one-stage solidification makes the liquid phenolic resin polymer containing chloroplatinic acid coated on the surface of the cordierite honeycomb ceramic completely solidified; two-stage calcination makes oxygen react with chloroplatinic acid, so that the chloroplatinic acid is decomposed, and the negative influence of chloride ions on the catalyst is eliminated; in an inert gas argon atmosphere, carbonization makes the phenolic resin polymer carbonize under high-temperature conditions to form porous carbon, and meanwhile, platinum ions are reduced to platinum single elements and embedded by the porous carbon, so that the precious metal (platinum, iridium) embedded porous carbon coated honeycomb ceramic monolithic catalyst is finally prepared.

The invention relates to the technical field of electrode material preparation, in particular to a supported iridium-based catalyst with a carrier surface rich in hydroxyl and a preparation method and application thereof.The preparation method comprises the steps that cerous nitrate, sodium hydroxide and water are mixed and subjected to a hydrothermal reaction, and a cerium dioxide precursor is obtained; mixing the cerium dioxide precursor, a hydrogen peroxide solution, a sulfuric acid solution and water, and reacting to obtain an intermediate of which the surface is loaded with hydroxyl; and mixing the intermediate of which the surface is loaded with hydroxyl, iridium metal salt and an alcohol solvent, and carrying out reduction reaction to obtain the supported iridium-based catalyst of which the carrier surface is rich in hydroxyl. The preparation method provided by the invention is a universal preparation method of a nanoparticle electrode material, the process is simple, the operation is convenient, the cost is low, and the prepared catalyst has good electrochemical activity and high stability, can show relatively excellent electrochemical performance in an electrolyzed water OER reaction, and is suitable for industrial production. And a new research scheme is provided for industrial application of electrolyzed water.

The invention discloses an endogenous Joule heat catalyst for methane dry reforming and a preparation method and application thereof, the endogenous Joule heat catalyst comprises a titanium black carrier and an active metal loaded on the titanium black carrier, the titanium black carrier is selected from at least one of Ti4O7, Ti5O9, Ti6O11, Ti7O13, Ti8O15 and Ti9O17, and the active metal is selected from at least one of Ti4O7, Ti5O9, Ti6O11, Ti7O13, Ti8O15 and Ti9O17. The active metal is at least one of nickel, cobalt, rhodium, ruthenium, palladium, platinum and iridium, and the endogenous Joule heat catalyst has an electro-thermal characteristic. Titanium oxide is used as a carrier, a conductive TiO layer exists in crystal lattices of the titanium oxide and has conductivity, CO2 can be directly activated by the conductive TiO layer containing a large number of oxygen vacancies, CH4 can be efficiently activated by the loaded active metal, the titanium oxide and the loaded active metal jointly form a bifunctional catalytic activity system, and the catalyst can be self-heated through endogenous Joule heat due to the electro-thermal characteristic; energy loss caused by indirect heat transfer of an electrothermal material in the prior art is avoided, current can directly flow through the catalyst, and the reaction performance is effectively improved by coupling the endogenous Joule heating effect and the electronic effect.

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 belongs to the technical field of electrochemical catalytic materials, and relates to an efficient non-iridium nickel-based catalyst and a preparation method thereof. Comprising a nitrogen-sulfur bifunctional in-situ doped and modified nickel-cobalt layered double hydroxide nanosheet, 2, 5-dihydroxy terephthalamide, a conductive carbon carrier, a pore-forming agent, a surface wetting agent and a cross-linking agent. The nickel-cobalt layered double hydroxide is prepared by carrying out hydrothermal reaction and calcination treatment on nickel nitrate hexahydrate, cobalt nitrate hexahydrate, thiourea and melamine under an alkaline condition, and synergistic doping of nitrogen and sulfur bifunctional groups is realized; organic-inorganic interface interaction is introduced into 2, 5-dihydroxy terephthalamide, so that the structural stability of the material is enhanced. According to the invention, the current density, the mass activity, the gas production volume, the stability and the turnover performance are obviously improved. According to the invention, the defects of insufficient conductivity, limited active sites and poor cycling stability of the existing nickel-cobalt-based catalyst are effectively overcome, and a new thought is provided for developing a low-cost and high-performance electrochemical catalyst.

The present application relates to the technical field of noble metal recovery, and particularly relates to a device for processing iridium-containing metal waste. The specific technical scheme is as follows: a processing box is provided, and a descaling mechanism and a stripping mechanism are sequentially arranged in the processing box. The stripping mechanism comprises a rolling assembly and a scraping assembly which are sequentially arranged in the processing box. The rolling assembly comprises one fixed roller and two movable rollers which form a triangular support structure. The fixed roller is arranged below the two movable rollers and below the movable roller adjacent to the scraping assembly. The movable roller above the fixed roller is adjusted up and down by an adjusting assembly to adjust the distance between the movable roller and the fixed roller. The other movable roller is adjusted laterally by the adjusting assembly arranged laterally to adjust the distance between the movable roller and the movable roller adjacent to the other movable roller. A plurality of protrusions are arranged on the fixed roller and the movable rollers. The present application solves the problems of poor pertinence and excessive crushing of the substrate when the existing mechanical equipment processes the catalytic net.

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.

The invention discloses a preparation method and application of a porous iridium nano-metal catalyst, and belongs to the field of material synthesis and electro-catalysis. Iridium acetylacetonate and copper acetylacetonate are used as precursors, an IrCu alloy nanosphere precursor is prepared through solvothermal reaction in an ethylene glycol and surfactant system, copper is removed through acid etching, and the porous iridium nano spherical catalyst (Ir-NS) is obtained. The catalyst has a three-dimensional porous spherical structure, active sites are concentrated on the surfaces of nanospheres and the edges of the walls of internal mesopores, catalytic active sites are enhanced due to the iridium nanosphere structure and uniform site exposure density, oxygen bubbles are quickly released, and the active sites are prevented from being covered by the bubbles. In an acid medium and proton exchange membrane water electrolysis anode oxygen evolution reaction, the catalyst shows low overpotential and long-term operation stability under low iridium loading capacity. The method is simple in process and low in cost, does not need an additional hard template, and has a good industrial application prospect.

The invention provides a preparation method of a titanium dioxide carrier based on ionic liquid regulation and control and a PEM electrolyzed water anode catalyst, and belongs to the technical field of PEM electrolyzed water hydrogen production. Titanium dioxide with a specific morphology is prepared by adopting a hydrothermal method under the assistance of the ionic liquid, the conductivity of the titanium dioxide is improved, under the condition that the dosage of precious metal is low, the supported precious metal iridium catalyst is superior to a commercial iridium black catalyst in the aspect of PEM electrolyzed water anode reaction activity, and excellent durability is shown; and the energy conversion efficiency is obviously improved. The method is simple and convenient to operate, and has huge market requirements and application prospects in the fields of electro-catalysis technology, petrochemical engineering and the like.

The application discloses an iridium element reinforced palladium-gold-copper alloy and a preparation method and application thereof, and relates to the technical field of electric contact metal materials. The raw material composition of the iridium element reinforced palladium-gold-copper alloy prepared by the application comprises, in percentage by mass, 0.5-1.5% of Ir, 9-16% of Au and 20-40% of Cu, and the balance is Pd. The specific preparation method is as follows: raw materials are weighed and mixed in proportion to obtain mixed raw material powder; the mixed raw material powder is vacuum smelted under an inert atmosphere to obtain alloy liquid; the alloy liquid is suction cast to obtain an ingot; the ingot is subjected to multi-pass rolling, drawing, intermediate annealing treatment, solid solution treatment and aging treatment to obtain an iridium element reinforced palladium-gold-copper alloy wire; and through the synergistic effect of component design and process control, the prepared iridium element reinforced palladium-gold-copper alloy has good processing performance under the premise of considering the strength, contact stability and low contact resistance of the contact material, and meets the stringent requirements of high-end alloy base materials for current semiconductor test probes.

The invention relates to the field of monoethylamine preparation processes, and discloses a monoethylamine production method, which comprises: under the action of an ammonolysis catalyst, uniformly mixing and preheating diethylamine, hydrogen and ammonia gas, allowing diethylamine to pass through an ammonolysis reactor and a deamination tower, carrying out monoethylamine refining, diethylamine refining and triethylamine refining, and preparing monoethylamine, the ammonolysis catalyst comprises a carrier as well as an active component and an auxiliary agent which are loaded on the carrier, and is characterized in that the carrier is aluminum oxide modified by a titanium silicalite molecular sieve, the content of the aluminum oxide exceeds 68wt% of the total mass of the carrier, the active component comprises nickel, the auxiliary agent comprises iridium, and the content of the titanium silicalite molecular sieve is more than 68wt% of the total mass of the carrier. On the basis of the total weight of the ammonolysis catalyst, the content of the nickel element is 15-30 wt%, and the content of the iridium element is 0.2-2 wt%. By adopting the method disclosed by the invention, monoethylamine can be directly produced by taking diethylamine as a raw material.