51 results about "Nickel ferrite" patented technology

The invention relates to a lightweight porous nickel ferrite composite electromagnetic absorbing material and a preparation method thereof, and belongs to the field of electromagnetic wave absorbing materials, and the lightweight porous nickel ferrite composite electromagnetic absorbing material is a porous electromagnetic absorbing material prepared by high-temperature annealing of a mixture containing ferric salt, nickel salt, an acetic acid solution and chitosan. The lightweight and porous nickel ferrite composite electromagnetic absorbing material has both lightweight and electromagnetic absorbing properties.

The invention relates to the related technical field of multifunctional magnetic materials, in particular to a corrosion-resistant magnetic isolation coating material and a preparation method thereof.The key electromagnetic parameters and corrosion resistance of the material can be controlled mainly through coating modification of nickel ferrite and coating regulation and control of a corrosion-resistant medium, and the relatively optimal comprehensive performance is obtained; on the basis, the modified nickel ferrite and polyurethane resin are compounded to construct a corrosion-resistant magnetic isolation coating, so that the purpose of magnetic protection in a severe corrosion environment is achieved.

The application discloses a kind of iron oxide / nickel ferrite composite nanorods and synthesis method thereof, belong to nanometer material technical field.The obtained composite nanorod is polycrystalline structure, and is composed of rhombohedral Fe2O3 and cubic NiFe2O4 crystal phase.The diameter of the composite nanorod is 10-100nm, and the length is greater than 500nm.The synthesis method is that iron acetate and nickel acetate are dissolved in deionized water, heated to temperature 80-100 DEG C, and kept for 1-5h, and iron oxide / nickel ferrite precursor is obtained after cooling and drying;iron oxide / nickel ferrite precursor is mixed with calcium chloride and sodium chloride, then the mixture is loaded into corundum crucible, the crucible is placed in reaction furnace, at temperature 800-1000 DEG C, and kept for 5-10h.The synthesis process of the application is simple, does not need complex equipment, and is easy to control.Iron oxide / nickel ferrite composite nanorod has a large number of catalytic active sites, and is expected to have good interface performance, catalytic activity, electrical and magnetic properties, and has good application prospect in catalysts, electrical devices and magnetic devices.

The invention discloses an iron oxide / nickel ferrite composite nanorod and a synthesis method thereof, and belongs to the technical field of nano materials. The obtained composite nanorod is of a polycrystalline structure and is composed of a rhombohedral Fe2O3 crystal phase and a cubic NiFe2O4 crystal phase. The diameter of the composite nanorod is 10-100 nm, and the length of the composite nanorod is greater than 500 nm. The synthesis method comprises the following steps: dissolving ferric acetate and nickel acetate in deionized water, heating to 80-100 DEG C, preserving heat for 1-5 hours, cooling and drying to obtain a ferric oxide / nickel ferrite precursor; fully mixing the ferric oxide / nickel ferrite precursor with calcium chloride and sodium chloride, then putting the mixture into a corundum crucible, putting the crucible into a reaction furnace, and keeping the temperature at 800-1000 DEG C for 5-10 hours; the synthesis process is simple, complex equipment is not needed, control is easy, and the iron oxide / nickel ferrite composite nanorod has a large number of catalytic active sites, is expected to have good interface performance, catalytic activity and electrical and magnetic performance and has good application prospects in the aspects of catalysts, electrical devices and magnetic devices.

The invention discloses a polyurethane flame-retardant sound-insulation composite board with a multi-layer structure and a preparation method thereof, and belongs to the technical field of composite boards, nickel nitrate is used as a nickel source, ferric nitrate is used as an iron source, nickel ferrite powder is obtained through a solvothermal method and a high-temperature calcination method, the nickel ferrite powder is compounded with graphene oxide to obtain composite aerogel powder, the surface of the composite aerogel powder is coated with polydopamine, and the flame-retardant sound-insulation composite board with the multi-layer structure is obtained. The enhanced aerogel powder is obtained; the preparation method comprises the following steps: preparing functional rigid polyurethane foam from polyether polyol, polymethylene polyphenyl polyisocyanate, enhanced aerogel powder, ammonium polyphosphate, magnesium hydroxide and a foaming aid through a one-step foaming method, putting the functional rigid polyurethane foam as a core layer between an aluminum-magnesium-manganese alloy color steel plate and a porous sound insulation plate, and carrying out hot-pressing compounding, so as to obtain the aluminum-magnesium-manganese alloy color steel plate / porous sound insulation plate. The polyurethane flame-retardant sound-insulation composite board with the multi-layer structure is obtained; and comprehensive improvement of flame retardance, sound insulation, heat insulation, electromagnetic shielding and dimensional stability is realized.

The invention belongs to the technical field of carbon dioxide capture and regeneration, and particularly relates to a magnetic nanofluid pseudo-homogeneous-microwave synergistic carbon dioxide desorption method. The invention provides an application of a nickel ferrite material as a catalyst in carbon dioxide absorption pregnant solution regeneration. According to the invention, the carrier-free and undoped spinel-type structure NixFe3-xO4 is used as a catalyst for carbon dioxide absorption rich liquid regeneration, and the catalyst has microwave absorption, catalytic activity and magnetic responsiveness. According to the desorption method provided by the invention, the nickel ferrite material forms a stable quasi-homogeneous dispersion system in the carbon dioxide absorption rich solution, and then under the conditions of low-temperature microwave radiation and stirring, the CO2 desorption load rate reaches more than or equal to 55% within 10-30 min, the desorption reaction rate is increased by more than or equal to 20% compared with that of traditional thermal regeneration, and the desorption time is reduced by more than half compared with that of traditional thermal regeneration.

A method of preparing a nickel ferrite-based eutectic ceramic inert anode material, in which a mixture powder of NiFe2O4-based spinel powder and nickel oxide-based powder is mixed with a binder, and granulated to obtain a granular material; the granular material is subjected to compression molding under 100-200 MPa to obtain a green body, which is pre-sintered to obtain a pre-sintered body; the pre-sintered body is melted in an inert gas atmosphere to obtain a molten material; the molten material is cooled at a rate of 1-100° C. / min and solidified to obtain a ceramic solidified body; and the ceramic solidified body is processed at 1250-1400° C. for 2-6 h, and cooled to room temperature at a rate of 1-50° C. / min to obtain the nickel ferrate-based eutectic ceramic inert anode material.

The invention discloses a welding method for nickel ferrite-based metal ceramic and metal. The welding method for the nickel ferrite-based metal ceramic and the metal comprises the following steps that the to-be-welded face of nickel ferrite ceramic is ground and polished, and the to-be-welded nickel ferrite ceramic is obtained; the metal powder is put into a ball mill for ball milling, and brazing filler metal with uniform components is obtained; to-be-welded nickel ferrite ceramic and metal are placed in acetone to be subjected to ultrasonic cleaning, and the cleaned nickel ferrite ceramic and metal are obtained; and the cleaned nickel ferrite ceramic and metal are welded with brazing filler metal, and welding of the nickel ferrite-based metal ceramic and metal is completed. The invention provides a nickel ferrite-based metal ceramic and metal welding method. The nickel ferrite-based metal ceramic and metal welding method has the advantages of being easy to operate, few in process, low in cost, high in welding speed and the like.

The present invention discloses an Al-NiFe composite material for producing synthesis gas through high selectivity through ethane reforming and its application. The preparation method comprises: using ethanol as a dispersant, fully dispersing aluminum salt and nickel ferrite, and heating at high temperature. The resulting product after self-propagating combustion is an aluminum oxide-nickel ferrite composite material, which is then reduced at high temperature to obtain the Al-NiFe composite material. The Al-NiFe composite material is composed of a nickel aluminate-nickel iron alloy, wherein the mass ratio of aluminum oxide to nickel ferrite is 1:10 to 1:5. The Al-NiFe composite material prepared by the present invention has a high ethane to CO2 conversion rate, thereby achieving efficient conversion of ethane to high-value-added CO, while consuming greenhouse gases. While achieving effective utilization of the ethane component in shale gas, it promotes carbon dioxide emission reduction and economic utilization.

The present invention relates to a process for fabricating an electrochemical device based on praseodymium-doped nickel-ferrite nanoparticles and an electrochemical device thereof. The nickel ferrites are synthesized using solution combustion method, with praseodymium doping concentrations varying from 0 to 0.02. The prepared nanoparticles are characterized for thorough analysis of their structural, morphological, and electrochemical properties, wherein a three-electrode system is developed for evaluation of electrochemical performance of the prepared nanoparticles. The results showed that optimal Pr-doping enhanced both the electrical conductivity and charge storage capacity of the material, wherein the sample with 0.01 Pr-doping (NP-3) exhibited the highest specific capacitance of 69.2 F / g at a current density of 0.1 A / g, with a low charge transfer resistance of 0.30 Ω, making it suitable for energy storage devices.

This application provides an electromagnetic shielding nanofiber composite membrane and its preparation method, belonging to the field of electromagnetic shielding material preparation technology. The electromagnetic shielding nanofiber composite membrane provided in this application includes a three-dimensional framework substrate, and conductive and magnetic media uniformly dispersed in the three-dimensional framework substrate. The substrate and the conductive and magnetic media form a special three-dimensional network porous structure through overlap and adsorption. The composite membrane provided in this application has a thickness of 20-30 μm, an electromagnetic shielding effectiveness of 59 dB, and a maximum tensile stress of 12 MPa. The preparation method of this composite membrane is as follows: carboxylated carbon nanotubes, copper nanowires, and nickel ferrite are uniformly loaded into PVA-co-PE nanofibers through vacuum-assisted filtration, cross-linking, and hot pressing processes. The membrane can be formed in a single filtration step. The preparation method is simple and has good repeatability.

The present invention relates to the technical field of ladle castables, and specifically discloses a slag-resistant ladle castable, which includes: a green body and a protective layer coated on the surface of the green body; the raw materials of the green body include, by mass: 40-70 parts of corundum aggregate, 10-20 parts of corundum fine powder, 5-15 parts of aluminum-magnesium spinel, 5-15 parts of activated alumina micro-powder, 1-5 parts of polystyrene microspheres, 1-3 parts of aluminate cement, and 1-2 parts of polycarboxylate water reducer; the raw materials of the protective layer include, by mass: 5-15 parts of activated alumina micro-powder, 1-3 parts of chromium trioxide, 1-2 parts of titanium dioxide, 1-2 parts of bismuth germanate powder, 1-2 parts of pretreated nickel ferrite micro-powder, and 1-3 parts of polyvinyl alcohol; the pretreated nickel ferrite micro-powder is nickel ferrite micro-powder coated with rare earth zirconate on the outside. The obtained ladle castable has high strength, excellent slag erosion resistance, and excellent structural stability, and can meet the long-term use of the ladle lining structure in the high-temperature molten steel erosion environment.

The application discloses a kind of nickel ferrite solid-state reference electrode for concrete and its design method, nickel ferrite solid-state reference electrode for concrete, including tube body and wire, cement paste layer, alkaline colloid layer, electrode material layer, conductive layer and packaging layer are sequentially arranged in tube body, one end of wire passes through packaging layer and is connected with conductive layer.Design method includes the following steps: the resistivity of cement paste layer, alkaline colloid layer, electrode material layer, conductive layer and packaging layer is calculated;Determine the target resistance and inner diameter size of nickel ferrite solid-state reference electrode;The thickness of cement paste layer, alkaline colloid layer, electrode material layer, conductive layer and packaging layer is calculated;Prepare nickel ferrite solid-state reference electrode for concrete.The general reference electrode is prepared in the application, the contact area of electrode layer and conductive layer increases, since the conductive performance of conductive layer is significantly better than electrode layer material, use the electrode material containing nickel ferrite, the potential stability and repeatability of prepared reference electrode are significantly improved.

The invention discloses a nickel ferrite electrocatalyst as well as a preparation method and application thereof, relates to the technical field of electrocatalysis, and improves the conductivity, stability and recycling property of a nitrogen reduction synthesis ammonia electrocatalyst. The preparation method comprises the following steps: dispersing nickel salt, ferric salt, sodium hydroxide and polyvinylpyrrolidone in deionized water, and carrying out hydrothermal reaction to obtain a nickel ferrite electrocatalyst; the nickel salt in the solution system is Ni (NO3) 2.6 H2O, and the iron salt in the solution system is Fe (NO3) 3.9 H2O; the molar ratio of the nickel salt to the iron salt is (0.7-1.1): 2. The invention provides an efficient, environment-friendly and recoverable electrocatalyst and an application scheme thereof for an electrocatalytic nitrogen reduction synthesis ammonia technology, and the electrocatalyst is simple in preparation process, low in cost and wide in application prospect.

According to the catalyst prepared from the waste polyester fabric and the nickel-containing solid waste, the preparation method and the application, the catalyst is prepared by loading BDC and a metallurgical solid waste product nickel ferrite through a water solvent method, the MOF catalyst is large in specific surface area and excellent in catalytic effect, the activity of a loaded compound is high, and the CO2 cracking effect exceeds that of a single catalyst. Compared with the prior art, the method has the advantages that by introducing the catalyst formed by converting the waste polyester fabric and the nickel-containing solid waste, important progress can be made in the aspects of environmental governance and resource utilization, and CO2 can be cracked by using the obtained catalyst while the waste is comprehensively utilized, so that the concentration of CO2 in the atmosphere is reduced; and a new thought and a new direction are provided for promoting sustainable development.

The invention discloses a film-forming lubricating wear-resistant lead screw working fluid and a preparation method thereof. The processing liquid is prepared from the following components in parts by weight: 12 to 28 parts of surface modified nano nickel ferrite, 2.5 to 8.5 parts of ferroferric oxide, 6 to 15 parts of a compound adhesive, 8 to 22 parts of a compound dispersant, 0.8 to 3.2 parts of a compound antioxidant and 50 to 99 parts of base oil. The preparation method comprises the steps of step-by-step modification, ultrasonic dispersion and high-shear homogenization. Through a magnetic synergistic lubrication system and a rapid film forming technology, the technical problems of insufficient lubrication performance, poor wear resistance and difficult film forming of the traditional screw rod working fluid are solved. Compared with the traditional cutting fluid, the optimal embodiment of the invention realizes the remarkable effects that the friction coefficient is reduced by 57.1%, the tool wear is reduced by 42.5%, the surface roughness is improved by 60.4%, and the dispersion stability exceeds 30 days.

A transmission line is disclosed which includes a first conductor, a second conductor, a composite disposed between the first conductor and the second conductor, the composite includes non-linear inclusions comprising one or more of non-linear dielectric and non-linear magnetic inclusions mixed in a matrix material, wherein the non-linear dielectric inclusions are selected from the group consisting of barium strontium titanate (BST), barium titanate, strontium titanate, barium zirconate titanate, lead zirconate titanate, lead titanate, lithium niobate, potassium niobate, lead scandium tantalate, strontium barium niobate, and combinations thereof, and the non-linear magnetic inclusions are selected from the group consisting of nickel zinc ferrite (NZF), manganese zinc ferrite, cobalt ferrite, manganese ferrite, zinc ferrite, nickel ferrite, and combinations thereof, wherein the non-linear inclusions by volume are about 25% NZF, about 10% BST / 15% NZF, and about 15% BST / 10% NZF, and wherein the first conductor, the second conductor, and the composite form a capacitor.

A method of preparing a nickel ferrite-based eutectic ceramic inert anode material, in which a mixture powder of NiFe2O4-based spinel powder and nickel oxide-based powder is mixed with a binder, and granulated to obtain a granular material; the granular material is subjected to compression molding under 100-200 MPa to obtain a green body, which is pre-sintered to obtain a pre-sintered body; the pre-sintered body is melted in an inert gas atmosphere to obtain a molten material; the molten material is cooled at a rate of 1-100° C. / min and solidified to obtain a ceramic solidified body; and the ceramic solidified body is processed at 1250-1400° C. for 2-6 h, and cooled to room temperature at a rate of 1-50° C. / min to obtain the nickel ferrate-based eutectic ceramic inert anode material.

The present invention provides a method for reproducing the oxidation corrosion product deposition layer of a pressurized water reactor core, which relates to the simulation technology field of pressurized water reactors and is designed to solve the problem that the deposition of core oxidation corrosion products cannot be conveniently and quickly reproduced. The method for reproducing the oxidation corrosion product deposition layer of a pressurized water reactor core includes: preparing an intermediate layer: forming a wet gel from nickel salt and iron salt, coating it on the surface of the alloy, and heating to obtain the intermediate layer; preparing the oxidation corrosion product deposition layer: mixing nano-nickel ferrite powder, binder, and pore-forming agent and grinding them into a paste; coating the paste on the intermediate layer and heating to obtain the oxidation corrosion product deposition layer. The method for reproducing the oxidation corrosion product deposition layer of a pressurized water reactor core provided by the present invention has simple process, is convenient and fast, has low requirements for equipment, causes little harm to the environment, has low energy consumption, and the morphological parameters of the generated oxidation corrosion product deposition layer conform to the parameter range of the core deposition layer.

The application belongs to the technical field of metal-ceramic interface wetting, and relates to a titanium-doped nickel ferrite ceramic body for improving interface wetting, a preparation method and application thereof. The preparation raw material of the titanium-doped nickel ferrite ceramic body comprises nickel ferrite powder and titanium powder. The mass percentage of the nickel ferrite powder is more than 90wt% and the mass percentage of the titanium powder is less than 10wt% based on 100wt% of the total mass percentage of the nickel ferrite powder and the titanium powder. The particle size D50 of the nickel ferrite powder is less than 50um. The particle size D50 of the titanium powder is less than 30um. The titanium-doped nickel ferrite ceramic body improves the wetting between the nickel ferrite ceramic body and Cu, makes the interface connection between the nickel ferrite ceramic body and the metal copper compact, free of obvious holes and cracks, and improves the three-dimensional interlocking quality of the metal copper and the nickel ferrite ceramic.

The application relates to the field of photocatalysis, in particular to a composite photocatalyst for removing methylene blue and a preparation method and application thereof. The preparation method of the composite photocatalyst for removing methylene blue comprises the following steps: mixing a mixed solvent containing choline chloride, ethylene glycol and water, a nickel source, an iron source and citric acid, and performing a complexing reaction, then adjusting the pH value of the reaction system, and performing a self-propagating reaction by heating to obtain a precursor; the precursor is calcined to obtain the composite photocatalyst; the main components of the composite photocatalyst include NiFe2O4, alpha-Fe2O3 and Ni3Fe. The composite photocatalyst with the main components of NiFe2O4, alpha-Fe2O3 and Ni3Fe can be obtained by adopting the method, the composite photocatalyst can overcome the shortcomings of pure nickel ferrite and alpha-Fe2O3 as photocatalysts, and the photocatalytic capacity is further improved.

The invention discloses a preparation method of a magnetic super composite material with a weak negative dielectric constant, and relates to the technical field of electromagnetic super material preparation. Metal nickel powder and bismuth ferrite powder are poured into a ball milling tank, absolute ethyl alcohol is added as a ball milling medium, and a ball mill is started for mixing; placing the ball-milled wet material in drying equipment, and removing the absolute ethyl alcohol to obtain a dried mixed material; pressing the green body; sintering at high temperature; magnetic field treatment. According to the invention, metal nickel is taken as a conductive functional phase, bismuth ferrite is taken as a precursor, and a nickel and nickel ferrite percolation system is constructed through the processes of wet ball-milling mixing, blank pressing, high-temperature sintering under argon protection and external magnetic field treatment, so that the regulation and control of the percolation structure and carrier transport operation of the composite material are realized; and finally obtaining the magnetic super-composite material with weak negative dielectric constant and large saturation magnetization intensity in the target frequency band, wherein the absolute value of the real part of the dielectric constant is less than 1000.

The invention belongs to the technical field of metal-ceramic interface wetting, and relates to a titanium-doped nickel ferrite ceramic body for improving interface wettability and a preparation method and application of the titanium-doped nickel ferrite ceramic body. Preparation raw materials of the titanium-doped nickel ferrite ceramic body comprise nickel ferrite powder and titanium powder; when the total mass percentage of the nickel ferrite powder and the titanium powder is 100 wt%, the mass percentage of the nickel ferrite powder is 90 wt% or above, and the mass percentage of the titanium powder is 10 wt% or below; the particle size D50 of the nickel ferrite powder is 50 [mu] m or less; the titanium powder has a particle size D50 of 30 [mu] m or less. According to the titanium-doped nickel ferrite ceramic body, the wettability between the nickel ferrite ceramic body and Cu is improved, the interface connecting position between the nickel ferrite ceramic body and metal copper is close, no obvious hole or crack exists, and the three-dimensional meshing quality of the metal copper and the nickel ferrite ceramic body is improved.

The invention provides an electromagnetic shielding nanofiber composite membrane and a preparation method thereof, and belongs to the technical field of electromagnetic shielding material preparation. The electromagnetic shielding nanofiber composite membrane provided by the invention comprises a three-dimensional skeleton base material, and a conducting medium and a magnetic medium which are uniformly dispersed in the three-dimensional skeleton base material, and a special three-dimensional net-shaped porous structure is formed between the base material and the conducting medium and between the base material and the magnetic medium through lap joint and adsorption. The thickness of the composite film provided by the invention is 20-30 [mu] m, the electromagnetic shielding effectiveness reaches 59dB, and the maximum tensile stress reaches 12MPa. The preparation method of the composite film comprises the following steps: uniformly loading the carboxylated carbon nanotubes, the copper nanowires and the nickel ferrites into PVA-co-PE nanofibers through vacuum-assisted filtration, crosslinking and hot pressing procedures, and carrying out one-time suction filtration to form the composite film, so that the preparation method is simple, and the composite film has relatively good repeatability.

The invention provides a preparation method of a nickel-iron sulfide loaded MOF (Metal Organic Framework)-based electrolytic seawater catalyst. The preparation method comprises the following steps: firstly, growing a ferro-nickel metal organic framework material NiFe-MOF on the surface of foamed nickel in situ through a solvothermal method; and then, part of NiFe-MOF is subjected to in-situ conversion into nickel iron sulfide nanoparticles by utilizing a vapor deposition technology, so that the sulfide-loaded NiFe-MOF (NiFe-MOF-S) is formed. The material can realize high activity and super durability required by direct seawater electrolysis in an alkaline seawater electrolyte. When the prepared sulfide-loaded NiFe-MOF material is used for seawater electrolysis oxygen evolution reaction, the electrocatalyst shows relatively low overpotential and good long-term operation stability.

The application provides a catalyst prepared by using waste polyester spun fabric and nickel-containing solid waste, a preparation method and application. The catalyst is prepared by using a water solvent method to load BDC and metallurgical solid waste product nickel ferrite. The MOF catalyst has the advantages of large specific surface area, excellent catalytic effect, high activity of loaded compounds and CO2 cracking effect higher than that of a single catalyst. Compared with the prior art, the catalyst prepared by introducing waste polyester spun fabric and nickel-containing solid waste can make important progress in environmental governance and resource utilization, and can crack CO2 by using the obtained catalyst while comprehensively utilizing the waste, thereby reducing the CO2 concentration in the atmosphere, and providing a new idea and direction for promoting sustainable development.

The invention discloses a preparation method and device of electrolytic magnesium, and belongs to the technical field of metal smelting. According to the method, a nickel ferrite-based eutectic ceramic inert anode and liquid metal lead or / and tin alloy are adopted as a cathode, and an industrial MgO raw material is electrolyzed in a MgF2-CaF2-LiF molten electrolyte at the temperature of 800-900 DEG C; after the magnesium-lead-tin alloy is generated through electrolysis, the high density of the metal lead-tin alloy is used for achieving effective isolation of the vacuum chamber and the electrolytic bath, and then the metal pure magnesium is obtained through online vacuum distillation separation by means of the vapor pressure difference of the metal lead-tin alloy and magnesium. According to the method, zero carbon emission in the electrolysis process can be achieved, and the used nickel ferrite-based eutectic ceramic anode can greatly improve the electrolysis current efficiency and the corrosion resistance; by adopting the lead-tin cathode liquid electrode, the production cost can be reduced; and the mode of separating the metal magnesium through online distillation can reduce the distillation energy consumption, and has remarkable environmental protection benefits and economic benefits.

The invention discloses a preparation method and application of eutectic composite metal ceramic. The method comprises the following steps: mixing ytterbium oxide, nickel oxide and iron oxide, carrying out pressure molding to obtain a green body, sintering the green body in an air atmosphere to obtain a sintered body, and melting, cooling and crushing the sintered body to obtain eutectic ceramic particles; and the eutectic ceramic particles, nickel ferrite powder and an adhesive are mixed and molded, then calcined, degummed and fired, and the eutectic composite metal ceramic is obtained. According to the method, a metal powder raw material is not used, a metal phase is separated out at the grain boundary of eutectic particles in an in-situ oxygen loss mode, and the corrosion resistance of the material is greatly improved on the basis that the conductivity of the material is guaranteed. The prepared eutectic composite metal ceramic inert anode material has important application in the fields of zero-carbon molten salt electrolytic aluminum, zero-carbon molten salt electrolytic magnesium, zero-carbon molten salt electrolytic rare earth, zero-carbon molten salt electrolytic carbon dioxide and the like.

FIELD: welding.SUBSTANCE: invention can be used for welding a ceramic inert anode based on nickel ferrite and a metal conductive block of an aluminium electrolyser. A ceramic inert anode based on nickel ferrite and a metal conductive block is produced and processed to form the surfaces to be joined. Producing a transition metal alloy foil and attaching the surfaces to be joined of a ceramic inert anode and a metallic conductive block, respectively, to two surfaces of the transition metal alloy foil to form a prefabricated connecting body. Vacuum diffusion welding is performed on a prefabricated connecting body at a diffusion temperature of 950 to 1200 °C, heating speeds from 10 to 30 °C / min, thermal insulation time from 2 to 20 min, pressure from 5 to 30 MPa and cooling rate from 4 to 8 °C / min.EFFECT: improved efficiency.6 cl, 3 dwg, 3 ex

An ionic liquid catalyst and a method for manufacturing the same are provided. The ionic liquid catalyst includes a carrier. The carrier contains nickel ferrite as a component, and an outer surface of the carrier is modified to have a decolorant and a degradation agent. The decolorant is grafted onto nickel atoms of the carrier, and the degradation agent is grafted onto iron atoms of the carrier. The method includes: providing the carrier that contains nickel ferrite as a component; and modifying the carrier, so that the nickel atoms of the carrier are grafted with the decolorant and the iron atoms of the carrier are grafted with the degradation agent. Accordingly, the ionic liquid catalyst is obtained.