1996 results about "Ruthenium" patented technology

The invention discloses a polyrotaxane covalent organic framework material capable of regulating interlayer spacing through cyclodextrin and application of the polyrotaxane covalent organic framework material, and belongs to the technical field of biological medicine. The polyrotaalkylated covalent organic framework material is obtained by taking a cyclodextrin aromatic multi-amino inclusion compound and a (multi-aldehyde bipyridine) ruthenium (II) complex as structural units and carrying out copolymerization; the cyclodextrin aromatic polyamine inclusion compound is a beta-cyclodextrin p-phenylenediamine inclusion compound with a hydroxyl group or without a hydroxyl group; the (multi-aldehyde dipyridyl) ruthenium (II) complex is tris (4, 4 '-diformaldehyde-2, 2'-dipyridyl) ruthenium (II). The interlayer spacing of the polyrotaxane covalent organic framework material is greatly increased by utilizing a cavity of gamma-cyclodextrin, and meanwhile, the material has excellent photo-thermal and photodynamic activity, is positively charged, and can better adsorb negatively charged bacteria; and the hydrogel is good in biocompatibility and free of toxic and side effects, and has an excellent treatment effect on wounds infected with staphylococcus aureus.

A lithium supplement additive, a positive electrode sheet, a battery, and an electric device. The lithium supplement additive comprises: a first lithium supplement agent, wherein the first lithium supplement agent comprises a first core, and the first core satisfies a chemical formula LiaMbOc, wherein a is 1.5-6, b is 0-2, c is 1-6, and the element M comprises at least one of a magnesium element, a calcium element, a vanadium element, a chromium element, a manganese element, an iron element, a cobalt element, a nickel element, a copper element, a zinc element, a niobium element, a molybdenum element, a ruthenium element, a tin element, a silicon element, a carbon element and a boron element; and a second lithium supplement agent, wherein the second lithium supplement agent comprises a second core, and the second core satisfies a chemical formula LidCeOf, wherein d is 1.5-6, e is 3-5, and f is 1.5-6. The mass fraction of the first lithium supplement agent in the lithium supplement additive is m1, the mass fraction of the second lithium supplement agent in the lithium supplement additive is m2, and m1:m2 is smaller than or equal to (10:1).

The invention relates to a Bayesian optimization-based ruthenium, tin and indium doped lithium-rich manganese-based electrocatalyst screening method, electronic equipment and a storage medium, and the method comprises the following steps: generating a uniform ruthenium, tin and indium doped lithium-rich manganese-based material data set based on Dirac distribution, and generating a doped structure through element replacement; calculating hydroxyl adsorption energy and extracting descriptors to construct a data set to train a machine learning model; performing cell expansion operation on the initial electrocatalyst structure, predicting hydroxyl adsorption energy of each adsorption site, and mapping adsorption energy deviation into current density characterization component activity in combination with Boltzmann distribution; selecting an initial component based on the obtained component activity information, and constructing an agent model by utilizing Bayesian optimization; and determining a to-be-sampled component through an expectation improvement strategy, sampling and updating the agent model, and outputting an optimal doping proportion. Compared with the prior art, the method has the advantages that the ruthenium, tin and indium doped lithium-rich manganese-based electrocatalyst with excellent catalytic performance can be efficiently screened out, and the experiment cost is reduced.

The invention relates to the technical field of high-entropy oxide and electrocatalyst synthesis, in particular to a double-phase hollow high-entropy oxide catalyst and a preparation method and application thereof, the double-phase hollow high-entropy oxide catalyst comprises metal elements and non-metal elements, the metal elements comprise ruthenium, nickel, cobalt, iron, manganese and chromium; the non-metallic element is oxygen; the chemical formula of the double-phase hollow high-entropy oxide catalyst is NiCoFeMnCrRuO. The invention further discloses a preparation method of the catalyst. The double-phase hollow high-entropy oxide catalyst has a multi-shell hollow structure, provides a larger specific surface area and exposes a large number of reaction active sites, so that the double-phase hollow high-entropy oxide catalyst has lower overpotential, higher reaction efficiency and good electrochemical stability; meanwhile, the preparation method of the double-phase hollow high-entropy oxide catalyst is simple in process, low in cost, high in repeatability and suitable for industrial mass production, and has a wide application prospect.

Provided herein are methods and apparatuses for reducing line bending when depositing a metal such as tungsten, molybdenum, ruthenium, or cobalt into features on substrates by periodically exposing the feature to nitrogen, oxygen, or ammonia during atomic layer deposition, chemical vapor deposition, or sequential chemical vapor deposition to reduce interactions between metal deposited onto sidewalls of a feature. Methods are suitable for deposition into V-shaped features.

Provided herein are methods and apparatuses for reducing line bending when depositing a metal such as tungsten, molybdenum, ruthenium, or cobalt into features on substrates by periodically exposing the feature to nitrogen, oxygen, or ammonia during atomic layer deposition, chemical vapor deposition, or sequential chemical vapor deposition to reduce interactions between metal deposited onto sidewalls of a feature. Methods are suitable for deposition into V-shaped features.

The invention belongs to the technical field of electrochemical treatment of wastewater, and relates to a Schwertmannite as well as a synthesis method and application thereof. The method aims at solving the technical problems that in the prior art, a method for preparing the Schwertmannite is low in yield, and when the Schwertmannite is prepared from acid mine wastewater, the cost is high, the yield is low, and the TFe precipitation rate is low. According to the synthesis method of the Schwertmannite, a titanium ruthenium iridium electrode serves as an anode, a platinum sheet serves as a cathode, the Schwertmannite is subjected to electrochemical synthesis in acid waste water, the pH value of the acid waste water is constant in the synthesis process, the acid waste water contains TFe and # imgabs0 # TFe is Fe < 2 + > and / or Fe < 3 + >, and the pH value of the acid waste water is 2.5-3.5, according to the scheme, the TFe precipitation rate is high, and the yield of the synthesized Schwertmannite is high. The invention further provides application of the Schwertmannite synthesis method, the synthesis method is applied to treatment of acid mine wastewater, lime is added for neutralization, the addition amount of the lime is 0.09 g / 150 mL to 0.11 g / 150 mL, the usage amount of the lime is reduced, and generation of waste residues is reduced.

The invention relates to the technical field of proton exchange membrane fuel cell cathode catalysts, and discloses a nanoscale high-entropy intermetallic compound catalyst and a preparation method and application thereof. According to the nanoscale high-entropy intermetallic compound catalyst, a nitrogen-doped porous carbon material derived from zeolite imidazole skeleton-8 is taken as a carrier, and the metal elements of a high-entropy intermetallic compound comprise platinum, copper, cobalt, nickel and iron or platinum, ruthenium, copper, cobalt, nickel and iron. The preparation method of the catalyst comprises the following steps: step 1, preparing a zeolite imidazole framework 8; 2, preparing and purifying a nitrogen-doped porous carbon material carrier; step 3, loading a metal precursor; and 4, preparing the nano-scale high-entropy intermetallic compound catalyst. Nanoscale, high dispersity and structure ordering of the high-entropy intermetallic compound are achieved, the high-entropy intermetallic compound serves as a PEMFC cathode catalyst, the ORR quality activity and durability can be remarkably improved, and Pt loading capacity and cost are effectively reduced.

The invention provides a hydrogen production electrode doped with platinum, ruthenium, tin and praseodymium, a preparation method of the hydrogen production electrode and a water electrolysis hydrogen production device, and relates to the field of water electrolysis hydrogen production. The preparation method of the hydrogen production electrode doped with platinum, ruthenium, tin and praseodymium comprises the following steps: coating the surface of a conductive substrate with mixed powder; the conductive base material coated with the mixed powder is subjected to thermal oxidation treatment, the mixed powder comprises first metal powder, second metal powder and a pore forming agent, the first metal powder comprises Ni powder, and the second metal powder comprises Pt powder, Ru powder, Sn powder and Pr powder; and putting the structure subjected to thermal oxidation treatment into an alkaline solution, and activating to obtain the hydrogen production electrode doped with platinum, ruthenium, tin and praseodymium. The platinum, the ruthenium, the tin and the praseodymium are introduced into the hydrogen production electrode, so that the hydrogen evolution overpotential can be reduced. The hydrogen production electrode prepared by the method disclosed by the invention has relatively high catalytic activity, relatively high stability and a uniformly distributed porous structure, the electrolytic efficiency can be remarkably improved, and the service life of equipment is prolonged.

The invention belongs to the technical field of high-purity metal preparation, and particularly discloses a method for preparing 5N-grade ultrapure iron. The method is characterized by comprising the following steps: electrolyzing industrial pure iron to prepare liquid; carrying out ion exchange treatment on the solution to reduce near-iron elements such as Co, Ni, Cu and Zn and impurities in the solution, so that ferrous ions are effectively enriched; then, the solution with the near iron element removed serves as electrolyte for electrolysis to prepare pure iron; in the electrolysis process, a ruthenium-coated titanium plate is used as an anode, and a pure titanium plate is used as a cathode; performing high-temperature vacuum annealing treatment and high-temperature atmosphere reduction on a product obtained by electrolysis to remove free-state and combined-state hydrogen and oxygen elements in the product; the 5N-grade ultrapure iron is prepared by matching the steps with a corresponding process. The method has the advantages that the removal of near-iron elements and gas elements is realized by combining solution purification, electrolysis, vacuum annealing and reduction from enrichment and purification of ferrous ions, and the purpose of preparing 5N-grade ultrapure iron through electrolysis is realized.

The invention relates to an MOF confinement ruthenium cluster catalyst for methanation of carbon dioxide as well as a preparation method and application of the MOF confinement ruthenium cluster catalyst. The catalyst comprises a carrier and an active component loaded on the carrier, the carrier comprises a metal organic framework containing hydroxyl; the metal organic framework comprises UiO-66 (UiO-66); the active component comprises metal ruthenium; the active component grows in a pore channel of the carrier and forms a metal cluster. The catalyst provided by the invention realizes 100% methane selectivity and 98.4% carbon dioxide (CO2) conversion rate under the conditions of 1 MPa and 220 DEG C, is almost close to thermodynamic limit equilibrium conversion rate (99.4%) and is superior to the currently reported Ru-based CO2 methanation catalyst, and the catalyst shows good catalytic activity and structural stability in the process of continuous reaction for 650 hours. The catalyst provided by the invention has the characteristics of simple preparation method, high metal dispersibility, mild reaction conditions, high conversion rate, good selectivity, excellent stability and the like.

The invention discloses a nano silicon dioxide loaded ruthenium-copper bimetallic catalyst as well as preparation and application thereof, and belongs to the technical field of acetylene hydrogenation reaction catalysts. A strong electrostatic adsorption method is adopted, nano silicon dioxide is used as a carrier, the pH of a solution is higher than the isoelectric point of the carrier through adjustment of ammonia water, and the carrier is negatively charged; in ammonia water, Cu and Ru respectively form positively charged metal complexes, and metals are anchored on the surface of the carrier under the action of strong electrostatic adsorption to prepare the atomic-scale dispersed ruthenium-copper bimetallic catalyst for acetylene selective hydrogenation reaction. When the prepared catalyst is used for catalyzing an acetylene hydrogenation reaction and the reaction temperature exceeds 170 DEG C, the acetylene conversion rate can reach 100%, and the ethylene selectivity is 90%-100%. And the catalyst has excellent stability, and can keep activity for a long time without obvious deactivation phenomenon.

The invention discloses an ammonia decomposition hydrogen production catalyst and a preparation method and application thereof, and relates to the field of catalysis, the catalyst comprises a carrier and an active component, and the carrier is doped porous nanorod-like cerium dioxide; the active component is alloy nanoparticles formed by ruthenium and other metals, and the ruthenium loading amount accounts for 0.8-2% of the total mass of the catalyst. The preparation process of the catalyst comprises the following steps: respectively preparing the carrier and the active component, anchoring the active component on the carrier in a highly dispersed manner in an in-situ loading manner, and enabling the active component of the catalyst and the carrier to form a strong synergistic catalysis effect by using a segmented heating gradient reduction process so as to show the characteristics of low-temperature high activity and high stability. Under the reaction conditions that the normal pressure is 0.1 MPa, the temperature is 450 DEG C and the air speed is 24000mL. G <-1 >. H <-1 >, the ammonia decomposition conversion rate reaches 99.5%, and the catalyst can stably run for 1000h without obvious inactivation.

The invention discloses a rare earth oxide post-supported ruthenium-based ammonia decomposition catalyst, a preparation method and application thereof in hydrogen preparation through ammonia decomposition, and belongs to the technical field of hydrogen production. The ammonia decomposition catalyst takes an oxide or a carbon material as a carrier, firstly, ruthenium metal is loaded to form an active center, then, rare earth oxide is introduced in a post-loading mode, the structure and electronic characteristics of a metal-carrier interface are regulated and controlled, and finally, the ammonia decomposition catalyst with high dispersity and stability is obtained through reduction treatment. The low-temperature ammonia decomposition performance and the operation stability are obviously improved. Under the conditions that the temperature is 400 DEG C and the air speed of ammonia gas is 18000 mL.gcat <-1 >. H <-1 >, the ammonia conversion rate of the catalyst is close to the thermodynamic limit, and the catalyst has good anti-sintering and anti-poisoning capabilities. The catalyst is simple and convenient in preparation process, can be produced on a large scale, is suitable for various scenes of hydrogen production through ammonia decomposition, is particularly suitable for distributed and on-demand hydrogen production systems, and provides powerful technical support for efficient utilization and green conversion of hydrogen energy.

The invention is suitable for the technical field of catalyst preparation, and provides a high-stability ruthenium-based catalyst and a preparation method thereof.The preparation method comprises the following steps that ruthenium salt, doped salt and molten salt are ground to be evenly mixed, poured into a porcelain boat, subjected to heat preservation at 550 DEG C for 3-5 h, taken out after being naturally cooled, heated in a water bath and then washed with water, then soaked with 0.5 mol / L sulfuric acid for 24 h and subjected to ultrasonic treatment for 2 h, and the high-stability ruthenium-based catalyst is obtained; and continuously washing with water, washing with absolute ethyl alcohol once, and drying to obtain the product. The performance of the catalyst is improved by replacing part of Ru atoms with Ge atoms; by adopting the improved molten salt method, the operation steps are simplified, and the reaction temperature is reduced. After the catalyst is subjected to water bath heating, acid soaking and ultrasonic treatment, uniform dispersion is realized, and salt residues are reduced. The method is simple and safe to operate, the adopted molten salt is low in price and has the potential of large-scale production, and the activity, dispersity and stability of the catalyst are further improved.

The invention discloses a nano-carbon supported ruthenium cluster nano-catalyst as well as a preparation method and application thereof. According to the present invention, the synthesis process of the catalyst is simple and easy to perform, the reaction process is controllable, the nanocarbon with characteristics of rich defects and large specific surface area is adopted as the carrier, the ruthenium cluster is loaded on the surface of the nanocarbon, and the nanometer catalyst with characteristics of high specific surface area and high atom utilization rate is synthesized. The catalyst can catalyze persulfate (PDS) to generate products with strong oxidation activity, namely sulfate free radicals (SO4.-), hydroxyl free radicals (. OH) and singlet oxygen (1O2), so that effective inactivation of bacteria is realized. In the invention, the reaction of activating the persulfate to disinfect by the catalyst is carried out at room temperature under neutral conditions, and in a mild reaction environment, the nanocarbon-loaded ruthenium cluster nanocatalyst shows good capability of catalyzing the persulfate to inactivate bacteria, and has huge potential in practical application of water disinfection.

The invention relates to a nickel-ruthenium composite coating plating method for a molybdenum alloy substrate, which is applied to the field of processing and manufacturing of metal-based molybdenum alloy substrates and comprises the following steps: carrying out surface pretreatment on a molybdenum sheet raw material to obtain a net molybdenum sheet; putting the pure molybdenum sheet into vacuum coating equipment, and starting the vacuum coating equipment to vacuumize to form a vacuum system; and vacuum coating equipment is started for heating, a high-temperature system is formed, the surface of the net molybdenum sheet is coated with a physical vapor deposition method, and the molybdenum sheet with nickel plated on the two faces and ruthenium plated on the single face is obtained. The method has the technical effects that a good coating film is formed on the surface of the molybdenum sheet through a vacuum coating method, the method is green and environmentally friendly, harmful substances are reduced, the adhesive force between the coating layer and the molybdenum sheet is high, the film layer is high in purity and good in quality, and the production quality of the molybdenum alloy substrate is improved. Grease, oxides, residual solvents, impurities and the like on the surface of the molybdenum sheet are cleaned through the surface pretreatment step, the surface quality and binding force of the molybdenum sheet are improved, and the connection firmness of the nickel-ruthenium composite coating on the surface of the molybdenum sheet is improved.

A reflective mask blank for EUV lithography includes: a substrate; a multilayer reflective film for reflecting EUV light; and a phase shift film for shifting a phase of EUV light, the multilayer reflective film and the phase shift film formed on or above the substrate in this order. The phase shift film includes a layer 1 including ruthenium (Ru) and at least one selected from the group consisting of oxygen (O) and nitrogen (N). Among diffraction peaks derived from the phase shift film observed at 2θ: from 20° to 50° by out-of-plane XRD method, a peak having the highest intensity has a half value width FWHM of 1.0° or more.

The invention discloses a lubricating oil preparation method, which comprises: contacting a raw material containing waste rubber with a catalyst in a closed container in a hydrogen atmosphere, and carrying out a catalytic cracking reaction to obtain a lubricating oil-containing product, the catalyst comprises a carrier, an acidic component and an active component loaded on the surface of the carrier, the active component is selected from at least one of a ruthenium elementary substance, a rhodium elementary substance, a platinum elementary substance, a palladium elementary substance, an iridium elementary substance and a nickel elementary substance; the acidic component is selected from at least one of silicotungstic acid, ammonium metatungstate, phosphotungstic acid and tungstic acid. The invention discloses a new path for preparing the lubricating oil by utilizing the waste rubber through a carbon = carbon hydrogenation and carbon-carbon bond breakage strategy under a relatively mild condition. According to the path, new application of waste rubber catalytic conversion is developed through C = C hydrogenation and C-C bond fracture strategies, and a new method for synthesizing lubricating oil with important application value is provided.

The invention relates to a ruthenium nano-cluster / trinickel disulfide heterojunction composite material as well as a preparation method and application thereof. According to the composite material, foamed nickel serves as a substrate material, a Ni3S2 nanosheet array grows on the surface of the substrate material in situ, and ruthenium nanoclusters are anchored on the surface of the Ni3S2 nanosheet array to form the heterojunction composite material. According to the preparation method, the Ni3S2 nanosheet array grows on the foamed nickel substrate in situ, then the composite material with the ruthenium nanocluster anchored on the Ni3S2 surface is prepared through a chemical etching method, and the preparation method is simple, relatively low in cost and suitable for large-scale production; the prepared heterojunction composite material forms a nanosheet array structure and shows a honeycomb structure, so that the catalyst has a relatively large specific surface area, provides more active sites for catalytic reaction, is high in catalytic activity, and can be used as a catalyst applied to hydrogen evolution and oxygen evolution of water electrolysis reaction in electro-catalysis.

The invention discloses a hydroxyl-rich ruthenium / titanium dioxide catalyst as well as a preparation method and application thereof, and the preparation method comprises the following steps: step 1, loading a ruthenium precursor on a titanium dioxide carrier by adopting an impregnation method or a deposition-precipitation method, and drying and calcining to obtain a Ru / TiO2 catalyst; and step 2, placing the Ru / TiO2 catalyst in an atmosphere environment containing water vapor or forming a physical adsorption water film on the surface of the Ru / TiO2 catalyst, and performing ultraviolet irradiation treatment to obtain the Ru / TiO2 catalyst. According to the method, water is physically adsorbed through ultraviolet light dissociation, hydroxyl is directly generated on the surface of Ru / TiO2 in an in-situ mode, the method is easy to operate, complex liquid phase treatment is not needed, and the stability of the generated hydroxyl under the subsequent high-temperature gas-solid phase hydrogen-rich reaction condition is obviously superior to that of hydroxyl introduced through a traditional method. The stable hydroxyl enriched on the surface serves as an effective Lewis base site and cooperates with a Ru active site, adsorption and activation of CO2 molecules are remarkably promoted, and therefore the catalytic activity of the CO2 methanation reaction is greatly improved.

The invention discloses a catalyst for hydrogen production through tar steam reforming and a preparation method and application thereof. The catalyst comprises a cobalt-magnesium-aluminum composite spinel carrier and an active component loaded on the cobalt-magnesium-aluminum composite spinel carrier, the active component comprises nickel and at least one metal additive selected from iron, zirconium and ruthenium. The preparation method mainly comprises the following steps: preparing the carrier by adopting a coprecipitation method, loading the active component by adopting an impregnation method, and drying and reducing to obtain the final catalyst. The catalyst is used for tar component steam reforming hydrogen production reaction, especially for treating raw materials containing phenol and water vapor at 600-700 DEG C, tar conversion can be efficiently catalyzed, product gas rich in hydrogen can be generated, hydrogen selectivity is high, and almost no methane is generated. The catalyst has the advantages of high activity, good stability, strong carbon deposition resistance and the like, and is suitable for purification and high-value utilization of biomass pyrolysis tar.

The invention relates to a self-heating catalysis propane partial oxidation reforming coupling tube type solid oxide fuel cell system and a preparation method of a catalyst and a carrier thereof. The system comprises a fuel cell tube and a honeycomb type catalyst carrier with the catalyst, the fuel cell tube comprises a cathode layer, an electrolyte tube and an anode layer; the anode layer is located on the inner wall of the electrolyte tube, and the cathode layer is located on the outer wall of the electrolyte tube; the honeycomb type catalyst carrier is mounted at a gas inlet end of a fuel cell tube and is communicated with an inner cavity of the fuel cell tube, the catalyst is a ruthenium-based active component, comprises RuO or metal Ru and is doped with CeO as a dispersing aid, the loading capacity of Ru is 0.5-5wt%, and the proportion of CeO is 0.5-3wt%. The method has the advantages that the mechanical stability is good, the influence of the anode reduction process on the starting time is eliminated, the influence of anode carbon deposition on the performance of the SOFC is reduced, and rapid heating and rapid power generation are realized.

The invention provides a long-acting and low-cost Ru-based catalyst for hydrogen production through ammonia decomposition and a preparation method thereof.The preparation method comprises the steps that calcium salt or strontium salt and cerium nitrate hexahydrate are added into deionized water to be prepared into a mixed solution, the pH value of the mixed solution is adjusted, then a precipitate is obtained through closed heating treatment, carrier powder is prepared through roasting and grinding in sequence, and the Ru-based catalyst for hydrogen production through ammonia decomposition is obtained; and adding a proper amount of ruthenium salt, uniformly stirring to form a Ru-carrier dispersion liquid, and finally, sequentially roasting and grinding to obtain the Ru-based catalyst for hydrogen production by ammonia decomposition. The loading capacity of the catalyst is lower than that of conventional Ru, the catalyst can show good ammonia decomposition hydrogen production performance under the conditions that the 10% NH3 / Ar mass space velocity (GHSV) is 30000 ml / (gcat.h) and the low temperature is 450 DEG C, it is accidentally found that the catalyst can keep long-term stability for at least 100 hours or above, and meanwhile the simple synthesis method is suitable for industrial large-scale production.

The present disclosure includes mixed metal catalysts, including electrocatalysts, which can be applied to reduce the need for Ir, while exhibiting desirable performance. Mixed metal electrocatalyst materials on the invention catalysts comprising Ir, Ru and Pd, catalysts comprising Ru and Pd, and catalysts comprising Ir and Pd.

The invention relates to the technical field of chemical catalysts, in particular to a cerium-based solid solution loaded iron-based oxygen vacancy enhanced low-temperature ammonia synthesis catalyst. The heterovalent ions are doped in CeO2 crystal lattices to introduce strain and defects, so that the oxygen vacancy formation energy and concentration are greatly improved. Experiments show that the oxygen vacancy concentration (delta) of the Ce0. 8Zr0. 2O2-delta carrier disclosed by the invention can reach 0.12, which is 3-5 times that of pure CeO2. Under the conditions of 250 DEG C and 5 MPa, the ammonia synthesis rate reaches 120 [mu] mol / g / h, which is more than 20 times that of a traditional molten iron catalyst; under the conditions of 350 DEG C and 10 MPa, the ammonia synthesis rate exceeds 1000 [mu] mol / g / h and is close to the level of a noble metal ruthenium-based catalyst. As the working temperature is reduced by 100-150 DEG C, the reaction heat consumption is reduced by more than 30%, and the overall energy consumption is reduced by 25-40%.

The present invention relates to the field of water electrolysis and hydrogen production. Disclosed is a carbon nanotube-supported nitrogen-doped catalyst. The catalyst has a carbon nanotube structure as a support, and cobalt and ruthenium as active components, wherein the content of the cobalt element is 30-45w%, the content of the ruthenium element is 1-7wt%, and the proportion of the ruthenium element present in the form of RuN is 60-90wt% relative to the total ruthenium element. A graphitized structure of the catalyst is conducive to charge conduction, Ru is uniformly loaded on the surface of the support by means of a low-temperature reduction process and interaction with defect sites on the surface of the support, and then after high-temperature roasting, Ru interacts with the N element and the metal Co, thereby improving the hydrogen evolution catalytic activity of the catalyst.

The invention provides a preparation method and application of nitrogen-doped activated carbon for a ruthenium catalyst carrier, and the preparation method comprises the following steps: carrying out in-situ polymerization on aniline on the surface of nanocellulose by adopting an oxidative polymerization method to generate polyaniline, so as to obtain polyaniline-coated nanocellulose; the preparation method comprises the following steps: reacting phenol, an aminophenol derivative and a formaldehyde solution serving as raw materials under the action of a base catalyst to obtain modified A-stage phenolic resin; and uniformly mixing the polyaniline-coated nano cellulose with the modified resol, curing, crushing, carbonizing, activating, graphitizing, grinding and sieving to obtain the nitrogen-doped carrier activated carbon. The nanocellulose contains carbon, hydrogen and oxygen elements, gas can be generated in the preparation process of the activated carbon, and the pore structure of the activated carbon is expanded along with gas escape; a nitrogen-doped activated carbon pore wall is generated in situ by polyaniline around the occupation space of the nanocellulose, and the nitrogen element is beneficial to adjusting the size of active metal ruthenium particles and improving the activity and stability of the ammonia synthesis supported ruthenium catalyst prepared from the nitrogen-doped activated carbon pore wall.

An extreme ultraviolet mask including a substrate, a reflective multilayer stack on the substrate and a multi-layer patterned absorber layer on the reflective multilayer stack is provided. Disclosed embodiments include an absorber layer that includes an alloy comprising ruthenium (Ru), chromium (Cr), platinum (Pt), gold (Au), iridium (Ir), titanium (Ti), niobium (Nb), rhodium (Rh), molybdenum (Mo), tungsten (W) or palladium (Pd), and at least one alloying element. The at least one alloying element includes ruthenium (Ru), chromium (Cr), tantalum (Ta), platinum (Pt), gold (Au), iridium (Ir), titanium (Ti), niobium (Nb), rhodium (Rh), molybdenum (Mo), hafnium (Hf), boron (B), nitrogen (N), silicon (Si), zirconium (Zr) or vanadium (V). Other embodiments include a multi-layer patterned absorber structure with layers that include an alloy and an alloying element, where at least two of the layers of the multi-layer structure have different compositions.

The invention provides a PtRu-based composite bifunctional catalyst and a preparation method and application thereof, the PtRu-based composite bifunctional catalyst comprises a carrier and a load loaded on the carrier, and the carrier comprises a graphitized carbon carrier; the load comprises platinum ruthenium-based metal particles and a compound with a chemical formula of HxMO3, wherein M comprises W or / and Mo. According to the PtRu-based composite bifunctional catalyst disclosed by the invention, the metal PtRu plays a role in resisting CO poisoning, and the HxMO3 plays a role of a proton acceptor, so that a hydrogen oxidation reaction is promoted. Meanwhile, the HxMO3 can strengthen a difunctional mechanism of a carbon monoxide oxidation reaction, and the CO poisoning resistance of the catalyst is improved. In addition, the graphitized carbon carrier with a specific graphite microcrystal size has good high-potential corrosion resistance and metal dispersibility, and metal agglomeration and performance degradation of the catalyst caused by high-potential corrosion of the carrier are greatly slowed down.