304 results about "Active phase" patented technology

The invention discloses an impregnation liquid for preparing hydrogenated bisphenol A through bisphenol A hydrogenation. The impregnation liquid comprises a Ru complex, a water-soluble nonionic surfactant and water, wherein the molecular size of the Ru complex is greater than 1nm. According to the preparation method disclosed by the invention, by adopting the impregnation liquid containing the Ru complex of which the molecular size is greater than 1nm and the water-soluble nonionic surfactant, more Ru complex of which the molecular size is greater than 1nm can exist in mesoporous channels of an activated carbon carrier in an impregnation process, so that the contact probability of an active phase and a reactant bisphenol A molecule is increased; the purposes of improving the active metal utilization rate and improving the catalyst activity are achieved.

The invention discloses a preparation method of a hydrofining catalyst for petrochemical engineering. The preparation method comprises the following steps: step a, carrier pretreatment: putting an aluminum oxide precursor into a dilute nitric acid solution with the mass fraction of 1-5%, dipping for 2-4 hours, and drying at 120-150 DEG C for 3-6 hours; the comprehensive performance of the catalyst is remarkably improved by modifying the alumina carrier with phosphoric acid and optimizing an active component loading process; a gradient acid center is constructed on the surface of the carrier through phosphoric acid treatment to promote adsorption and dissociation of the sulfur / nitrogen-containing compound; the dispersion degree of the active phase is enhanced and high-temperature sintering is inhibited by a bimetal synergistic loading strategy; the pore structure evolution is effectively controlled by a segmented drying and stepped heating roasting process, a through type mesoporous network is formed, and the macromolecular diffusion efficiency is improved; the obtained catalyst is improved in activity in diesel oil hydrodesulfurization, improved in mechanical strength and prolonged in service life.

The invention discloses a vanadium catalyst for preparing sulfuric acid through wet conversion as well as a preparation method and application of the vanadium catalyst, and belongs to the technical field of catalysts. By improving a catalyst formula and a preparation process, a silicate aid is added to generate crystal silicon dioxide to regulate the structure of a diatomite carrier, and the heat resistance and hydrothermal stability of the catalyst are improved; the rare earth additive is added to modulate the active phase of the catalyst, so that the activity of the catalyst in a wide temperature range (380-600 DEG C) is improved, and the requirement of modern development of preparing sulfuric acid by wet conversion can be met. The preparation method is improved on the basis of a traditional vanadium catalyst wet mixing method preparation process, the active component of the catalyst is changed into slurry from colloid, uniform mixing of the active component and a carrier is facilitated, the active component is uniformly dispersed, the utilization rate of the active component is increased, and the performance of the catalyst is improved.

The invention discloses a method for efficient photo-thermal catalytic degradation of sulfur-containing organic gas. A preparation method of a sulfur-resistant catalyst comprises the following steps: (1) salt containing sulfur-resistant active metal A and an accelerant are added into water to obtain a salt solution of the active metal A, and the active metal A is selected from more than one of Fe, Co, Cu, Mn, Ni, Pt and Sr; (2) adding a salt solution containing an active phase metal B into the carbon dioxide nanotube, carrying out vacuum-assisted confinement, drying and reducing to obtain an active phase material for degrading the sulfur-containing organic gas in the confinement of the titanium dioxide nanotube, the active phase metal B being selected from more than one of Fe, Co, Cu, Mn, Ni, Pt and Sr; and (3) adding the active phase material of the titanium dioxide nanotube for confinement degradation of the sulfur-containing organic gas into the salt solution of the active metal A for coupling to obtain the sulfur-resistant catalyst. According to the method provided by the invention, the catalyst shows excellent catalytic performance in light and heat catalytic systems.

The present invention discloses a gas-phase preparation method of 1,1,1,4,4,4-hexafluoro-2-butyne. Using a mixture of 2,3-dichloro-1,1,1,4,4,4-hexafluoro-2-butene and hydrogen as raw materials, under the action of a particulate catalyst, 1,1,1,4,4,4-hexafluoro-2-butyne is obtained through a one-step hydrodechlorination reaction. The catalyst includes a carbon carrier and an active phase in the form of hollow spheres supported on the carbon carrier. The active phase includes: a first metal selected from at least one of silver, copper, nickel, and cobalt; and a second metal selected from at least one of palladium, platinum, and rhodium. The present invention has the advantages of high product selectivity, high catalytic activity, obtaining the reaction product through a one-step reaction, and being suitable for industrial application, etc.

A composition comprising a promotor component is disclosed comprising a mixture of one or more catalytically active components and one or more oxidized disulfide oil (ODSO) compounds, including a water-soluble fraction of ODSO. A composition comprising an aqueous solution of one or more catalytically active components and a promotor component is also disclosed. In certain embodiments the ODSO is obtained from the effluent of an enhanced MEROX process. The compositions facilitate transfer of catalytically active components (or components that will be catalytically active in the finished solid catalyst material) onto the surface of support materials.

The invention relates to the technical field of catalysts, in particular to a desulfurization catalyst and application thereof in hydrodesulfurization. The desulfurization catalyst adopts a hollow core shell, a weak acid site is constructed on a shell surface, and a boron-containing polymerization network is formed through surface-initiated polymerization; and linear / branched polyethyleneimine complexation is used for synergistically introducing Ni and Mo, in-situ vulcanization is performed after inert atmosphere pretreatment, and a dispersed nickel molybdenum sulfide active phase and shallow and deep double-peak metal distribution are obtained. The structure inhibits excessive hydrogenation while ensuring diffusion and structural stability, promotes a direct desulfurization path, and shows high conversion and high selectivity to 4, 6-dimethyl dibenzothiophene. The catalyst has low hydrogen consumption, high aromatic hydrocarbon retention and cycling stability, and is suitable for deep desulfurization of diesel oil and preparation of ultralow-sulfur fuel.

The invention relates to a green catalysis method for improving phenylacetylene hydrogenation selectivity and a catalyst preparation method. The method mainly solves the problems of high catalyst cost, difficult realization of large-scale commercialization and the like caused by large usage amount of noble metals in alkene preparation through alkyne selective hydrogenation at present. According to the green catalysis method for improving phenylacetylene hydrogenation selectivity and the catalyst preparation method, preparation is simple, the usage amount of precious metal is low, H2Ti3O7 intrinsic ion exchange performance is utilized, a Pd active phase is inserted into crystal lattices of the catalyst, continuous active sites are separated, styrene excessive hydrogenation reaction is inhibited, and the selectivity of the catalyst is improved.

The invention discloses a hydrophobic modified manganese-doped copper-based catalyst for preparing methanol through CO2 thermal reduction hydrogenation as well as a preparation method and application of the hydrophobic modified manganese-doped copper-based catalyst, and belongs to the technical field of catalysts. The preparation method of the catalyst comprises the following steps: mixing a metal salt mixed solution of a copper salt, a zinc salt, an aluminum salt and a manganese salt with an alkaline solution of a sodium salt, and controlling the pH value; heating, aging, standing and layering; washing the precipitate, drying and roasting to obtain a manganese-doped copper-based catalyst to be hydrophobically modified; the preparation method comprises the following steps: carrying out a hydrothermal reaction on divinyl benzene and a DMF solution of epoxy resin, washing and drying a white solid obtained by the reaction to obtain a hydrophobic material nano-porous polydivinyl benzene; the preparation method comprises the following steps: mixing a hydrophobic material and a manganese-doped copper-based catalyst to be hydrophobically modified, grinding, tabletting and forming to obtain the hydrophobically modified manganese-doped copper-based catalyst. The CO2 adsorption capacity of the catalyst is improved, the monatomic dispersion degree of the catalyst is promoted, and large-scale low-steric-hindrance hydrophobic modification of an active phase is realized.

The invention relates to the technical field of catalysts, and particularly discloses a composite catalyst for preparing acrolein through catalytic oxidation of propylene and a preparation method of the composite catalyst, the composite catalyst comprises an active component I and an active component II, and the use mass ratio of the active component I to the active component II is 1: (1-19); the active component I is bismuth tungstate microspheres obtained by a hydrothermal synthesis method, and the general formula of the active component I is BiaW1Ox; the active component II is a multi-metal oxide obtained by a coprecipitation method, and the general formula of the active component II is Mo < 12 > Bi Co < c > Ni < d > Fe < e > A < f > B < g > O < y >; the bismuth tungstate microspheres obtained by a hydrothermal synthesis method and the multi-metal oxide obtained by a coprecipitation method are mixed to obtain the composite catalyst, so that the bismuth tungstate microspheres with microsphere structures can be used as active phases of reaction, and the specific surface area and the pore volume of the composite catalyst can be increased; the catalyst is suitable for a reaction for preparing acrolein through propylene catalytic oxidation under high load.

The invention belongs to the technical field of catalysts, and particularly relates to a Fe-based catalyst, a preparation method thereof and application of the Fe-based catalyst to preparation of low-carbon olefin through CO2 hydrogenation. The Fe-based catalyst comprises a carrier, transition metal elements and alkali metal elements, wherein the transition metal elements and the alkali metal elements are loaded on the carrier; the carrier is formed by pyrolyzing a carbamide compound; the carbon atom number of the carbamide compound is less than or equal to 10; the transition metal element comprises Fe. Compared with the prior art, the alkali metal element is introduced into the catalyst, so that the CO2 adsorption capacity of the Fe-based catalyst can be enhanced, and the CO2 conversion rate is increased; in addition, the carbonization efficiency of the Fe-based catalyst can be effectively promoted, and the formation of an iron carbide active phase is promoted; moreover, the Fe-based catalyst shows good catalytic activity when being used in a reaction for preparing low-carbon olefin through CO2 hydrogenation, has an industrial application prospect, and also has relatively high low-carbon olefin selectivity.

The invention provides a preparation method of a MoS2 / MXene moire heterogeneous synergistic catalyst, which comprises the following preparation steps: selectively etching a Ti3AlC2 precursor by adopting LiF and HCl to obtain a two-dimensional MXene nanosheet; the preparation method comprises the following steps: mixing an MXene solution with Na2MoO4, CH4N2S and citric acid in proportion, and ultrasonically dispersing in a water solvent to form a precursor solution; by regulating and controlling the proportion of the 1T / 2H-MoS2 phase, the conductivity and the stability are both considered, and the synergistic effect of the MoS2 as an electrocatalytic active phase is improved; the orientation and the torsional angle of MoS2 are regulated and controlled on a two-dimensional MXene substrate, a periodic Moire superlattice structure is constructed, and electron coupling and energy band alignment are enhanced; by constructing a collaborative interface system, the transmission rate of interface carriers is increased, the reaction overpotential is reduced, and the durability and cycling stability under high current density are enhanced; the invention provides an extensible and universal flexible preparation method which is suitable for a low-temperature-condition controllable synthesis process for constructing a two-dimensional MoS2 / MXene heterostructure in a large area.

The invention discloses a preparation method of a Sn-Bi-Ni-Cu quaternary liquid alloy methane cracking catalyst, production raw materials comprise composite melt metal and composite transition metal, and the mass ratio of the composite melt metal to the composite transition metal is 1: (0.3-1.2); the composite melt metal is composed of Sn and Bi according to the mass ratio of 1: (1.3-1.7); the composite transition metal is composed of Ni and Cu according to the mass ratio of 1: 0.15-1.2. The quaternary liquid alloy catalyst has the advantages that: 1) compared with the existing catalyst for hydrogen production by methane cracking, the quaternary liquid alloy catalyst provided by the invention can stably operate for more than 1000 hours in a range of normal pressure to 3MPa and air speed of 100-100mL. G <-1 >. H <-1 >, the active phase retention rate is more than 95%, and the quaternary liquid alloy catalyst is especially suitable for alkane pyrolysis hydrogen production, CO2 hydrogenation and easy carbon deposition reaction systems, and has a wide application prospect; a new material design thought and an engineering implementation scheme are provided for the field of liquid metal high-temperature catalysis; and 2) experiments show that the quaternary liquid alloy catalyst prepared by the method provided by the invention can significantly improve the carbon sequestration rate and the hydrogen yield.

The invention discloses a vanadium catalyst for sulfuric acid production and a preparation and use method thereof, and belongs to the technical field of catalysts. A catalyst formula and a preparation process are improved, a silicate aid is added to generate crystal silicon dioxide to regulate and control the structure of a diatomite carrier, and a tabletting molding process is adopted to replace an extrusion molding process, so that the strength and stability of the catalyst are improved, the abrasion is reduced, and the pulverization resistance is improved; the additive is added to modulate the active phase of the catalyst, the activity stability is improved, and the requirements of modern sulfuric acid production can be met. The catalyst produced by the technical scheme is uniform in active component distribution and high in mechanical strength, the stability is improved, the production requirements of sulfuric acid manufacturers can be better met, the operation stability of a sulfuric acid production device is improved, and remarkable economic benefits and social benefits are achieved.

The invention provides a loess-based hydrogen sulfide adsorbent, a preparation method thereof and application of the loess-based hydrogen sulfide adsorbent in removal of hydrogen sulfide in natural gas. Loess with a specific substance content is taken as a raw material, the material is prepared through pretreatment, modification activation and extrusion molding, and modification activation comprises alkali activation, graphene oxide crosslinking and copper and zinc loading. According to the invention, specific loess is combined with a targeted modification and activation process, so that the porosity and the specific surface area are effectively improved, and a new active phase is formed and endowed with adsorption and catalytic oxidation effects. The prepared adsorbent has the remarkable advantages of low cost, high sulfur capacity, long penetration time, excellent regeneration performance and the like. In a medium-low-temperature dry desulfurization scene, HS (the concentration is reduced to 0.1 ppm or below) in natural gas can be efficiently removed, and the device is particularly suitable for small and medium-sized natural gas purification devices in various process scenes such as a fixed bed and a moving bed, and can also be expanded to various fields such as coal chemical industry, petrochemical industry, biogas purification, environmental protection and the like.

This invention discloses a method for extending the range of guided rockets using a single-chamber, dual-thrust design. By rationally designing the guided rocket's acceleration process after launch, this method effectively reduces energy loss during passage through dense atmosphere, improves the guided rocket's energy conversion efficiency, and ultimately, with a comparable charge, enables the guided rocket to achieve greater mechanical energy at the end of its active phase, thereby effectively increasing its range. A notable feature of this method is that the end of the guided rocket's active phase is located at a higher altitude, thereby achieving a better thermal environment in the active phase while simultaneously increasing its range.

The invention relates to a preparation method of a catalyst for efficiently decomposing high-humidity ozone, which comprises the following steps: (1) roasting and pretreating spherical aluminum oxide, soaking in a hydrochloric acid solution, washing with water and drying; (2) uniformly dispersing a manganese source and a copper source in an organic solvent to obtain a mixed solution, completely impregnating the hydrochloric acid modified spherical aluminum oxide in the step (1) in the mixed solution, and drying and calcining the impregnated spherical aluminum oxide catalyst to obtain a manganese-copper-based catalyst; and (3) uniformly dispersing a platinum source in pure water, completely dipping the manganese-copper-based catalyst in the step (2) in a platinum source solution, and drying and calcining the dipped catalyst again to obtain the high-moisture-resistance catalyst. The catalyst is prepared by adding the active components in two steps, so that the overall dispersity is improved to form a more ideal active phase, the dispersity of the active components manganese, copper and platinum is improved, the spatial distribution of active sites is controlled, side reactions are inhibited, and the catalyst is suitable for removing ozone in a high-humidity environment and has the characteristics of high humidity resistance and the like.

The present invention relates to a nitrogen-doped carbon-wrapped nickel catalyst for synthesis of higher alcohols by assembly of bioethanol and a preparation method therefor. The preparation method includes the following steps: S1, subjecting a soluble nickel salt and polyacrylamide to stirring with water, completely dissolving and then drying to obtain a precursor, where a molar ratio of the soluble nickel salt to polyacrylamide is 1:(0.5-8); and S2, subjecting the precursor to pyrolysis in an inert atmosphere at 300° C.-800° C. for 1-6 hours to obtain the nitrogen-doped carbon-wrapped nickel catalyst. The catalyst prepared by the method of the present invention has an active phase with high dispersity which enables synthesis of higher alcohols by efficient assembly of small molecules, and has relatively high stability which can still maintain high conversion rate and high yield for organic phase after 10 times of repeated use.

The invention discloses a high-water-content material conveying system and method based on bionic and active separation, and belongs to the technical field of bulk material conveying. A self-adaptive super-smooth interface is constructed through a gradient porous ceramic matrix and electrowetting regulation and control, and the surface characteristics are dynamically regulated and controlled through voltage, so that the self-adaptive super-smooth interface adapts to the adhesion characteristics of different materials; water-solid efficient separation is achieved by combining ultrasonic cavitation and a centrifugal force field, through the active phase separation mechanism of first dissociation and then separation, the traditional mode of single mechanical extrusion or gravity drainage is changed, and the water-solid separation efficiency is improved to 95% from 70% or below; and magnetic suspension driving and piezoelectric energy harvesting are adopted, so that energy consumption is reduced. The system can achieve the breakthrough effects that adhesion tends to zero, separated water is directly recycled, and the power consumption per ton is smaller than 1 kWh, and is suitable for green conveying of industrial sludge, tailings and other scenes.

The invention discloses a nitrogen / sulfur co-doped porous carbon iron-based composite sodium ion battery negative electrode material and a preparation method thereof. According to the material, chitosan is taken as a carbon source, and the honeycomb-shaped composite carbon material with a hierarchical mesoporous structure is prepared by combining a sodium chloride template method and a two-step calcination process through a double-doping synergistic effect of cyanamine and ferric sulfate. FeS and Fe4 (Fe (CN) 6) 3 active phases are uniformly distributed in the material, FeS and Fe4 (Fe (CN) 6) 3 exist in a heterojunction form, nitrogen is doped in forms of pyridine nitrogen (more than or equal to 50%) and pyrrole nitrogen, and sulfur exists in forms of C-S-C bonds and sulfur oxides. The first efficiency of the material is greater than 90%, the reversible capacity under the current density of 1A / g reaches more than 450mAh / g, the capacity retention ratio after 1000 cycles is greater than or equal to 90%, and the reversible specific capacity under the high rate of 20A / g is still kept more than 150mAh / g. The preparation method comprises the steps of spray drying, two-step calcination and pickling pore-forming. The invention solves the problems of low capacity and poor cycling stability of the existing sodium-ion battery negative electrode material, and is suitable for high-power energy storage equipment.

The invention relates to the technical field of zinc-air batteries, in particular to a preparation method of a NH4Cl auxiliary modified flexible carbon nanotube film loaded nano FeNi particle catalyst, which comprises the following steps: introducing FeNi nanoparticles on an SWCNT film, nitriding by ammonia gas, and decomposing NH4Cl in high-temperature vacuum to generate NH3 and HCl to realize particle in-situ refinement and heterostructure construction. And the FeNi3N / FeNiN active phase with high density and small size is formed. The obtained integrated flexible catalyst has excellent ORR / OER bifunctional activity, the ORR half-wave potential in 0.1 M KOH reaches 0.82 V, the OER overpotential is only 190 mV, and the integrated flexible catalyst has excellent mechanical flexibility and cycling stability and can be directly used as a self-supporting electrode for a high-performance flexible zinc-air battery to promote development of wearable energy devices.

The present disclosure relates to a nanostructured coating for controlled biocidal and self-cleaning functions. It is disclosed a nanostructured coating for controlled biocidal and self-cleaning functions, comprising: an adhesion layer deposited on a substrate; a transition layer deposited on the adhesion layer; and a top layer comprising a passive matrix phase and a biocidal active phase; wherein the transition layer promotes mechanical compatibility between the adhesion layer and the top layer bounding the layers; wherein the coating is configured to electrochemically release biocidal species in response to an applied electrical potential, while maintaining corrosion resistance and mechanical hardness; and wherein the coating is electrochemically reversible, such that the biocidal release is controllable and stoppable by adjusting or reversing an electrical potential.

The invention belongs to the technical field of functional materials and energy, and particularly relates to preparation and application of a cobalt-based catalyst for electrooxidation of 5-hydroxymethylfurfural (HMF). Cobalt oxide (CoOx) rich in oxygen vacancies (VO) is prepared on a three-dimensional porous framework substrate through a cathode electrodeposition method, and the cobalt-based catalyst is obtained through cleaning and drying. According to the present invention, the VO rich in the catalyst can promote the oxidation reconstruction of CoOx into the gamma-CoOOH phase so as to rapidly convert the CoOx into the active phase CoO2, such that the oxidation of the hydroxyl group in the HMF molecule is important so as to substantially improve the HMF oxidation reaction performance, and the synthesized CoOx has the nanosheet array structure and the rich active site; an electro-catalysis result shows that the catalyst has very excellent catalytic activity, selectivity and stability under relatively high current density, so that the catalyst has relatively great application potential in the aspect of electro-oxidation of HMF.

The invention discloses an anti-wrinkle skin care product composition and a facial mask.The anti-wrinkle skin care product composition comprises an active phase and a basic phase, and the active phase comprises I-type collagen peptide, a ginseng extract, a grape seed extract, an aloe extract and a turmeric extract; the base phase comprises a humectant. According to the technical scheme, the problem that skin collagen is difficult to supplement in a transdermal way is solved.

An integrated catalyst can be used in an olefin disproportionation reaction. The integrated catalyst contains a plurality of different integrated active phases. The relative positions among different active phases remain substantially unchanged during the olefin disproportionation reaction. The effective distance between respective bisecting planes of two adjacent different active phases is 0.5-5 mm, preferably 1-3 mm.

The present invention relates to a catalyst comprising a ruthenium oxocarbonate, its preparation method, and its use for the hydrogenation of CO2 to form methane at temperatures below 200°C.

This invention discloses a deep defluorination agent and its application method, specifically relating to the field of defluorination agents (GMS-FS series products). It includes a valence-state switching active phase, a reaction interface building component, a dynamic electronic regulation component, and a structure adjustment and protection component. The valence-state switching active phase provides a reversible valence-state transition reaction center, achieving specific capture of fluoride ions through an electron trapping effect when interacting with them. The reaction interface building component forms a polar gradient interface layer on the surface of the defluorination agent, guiding fluoride ions to migrate towards the active center and locally enrich them, thereby improving defluorination efficiency. By constructing a rare metal valence-state switching active phase with La2O3 and UO2 as its core, combined with a polar gradient interface guiding layer and a dynamic electronic regulation mechanism, preferential migration and specific capture of fluoride ions are induced in a multi-ion coexistence environment, achieving stable deep defluorination under high salinity and highly competitive ion conditions.

The invention discloses an electrode material which is simple in preparation method, high in performance and capable of stably producing hydrogen by electrolyzing water, and also discloses a preparation method of a photocatalyst for purifying wastewater by using a derivative of the electrode material. The preparation method of the electrocatalyst mainly comprises the following steps: etching a nickel metal substrate by using diluted hydrochloric acid; the preparation method comprises the following steps: preparing a first-stage product, dissolving the first-stage product with a bismuth source and molybdate in a reaction kettle, carrying out hydrothermal synthesis to obtain a hydrothermal product, carrying out high-temperature calcination on the obtained material to obtain a sample precursor and a part of byproducts, finally repeating the reaction once to obtain a high-activity electrode and related byproduct derivatives, mixing the two byproducts, carrying out high-temperature calcination, and grinding to obtain a second-stage product. According to the prepared catalyst, a bismuth source is introduced to serve as an additive, a NiMoO4 / Fe2 (MoO4) 3 composite film layer active phase is constructed on an NF substrate through a one-step hydrothermal-corrosion-growth method, the active phase and an NF framework are induced through a confinement effect to form strong interface bonding, the electron transfer rate is increased, and the electrode performance is remarkably improved by reducing the valence band position of the active phase. The preparation process is simple to operate, the morphology of the catalyst is controllable, and derived by-products generate higher economic benefits.

The invention discloses a method for synthesizing 2-aminopyridine, comprising using polystyrene resin beads as a carrier, a mixed solvent consisting of 1,2-dichloroethane and anhydrous ethanol as a porogen, adding the polystyrene resin beads and the mixed solvent to a flask for swelling; adding N,N-dimethylaniline to the flask, and performing a stirring reflux reaction; repeatedly washing the mixed solution in the flask with anhydrous ethanol and filtering it with suction, and finally vacuum drying it at room temperature. The method for synthesizing 2-aminopyridine utilizes polymer resin beads as a carrier, grafts a preferred highly active phase transfer catalyst molecule - N,N-dimethylaniline, and synthesizes a solid-supported phase transfer catalyst to achieve efficient recycling and regeneration of the phase transfer catalyst, and ensures the yield of the pyridine amination product by the solid-supported phase transfer catalyst, which is conducive to ensuring the efficient resource utilization of basic nitrogen heterocyclic compounds in coal tar.

The invention discloses a carbon-supported metal catalyst for reducing N2O at low temperature with hydrogen and its application, and belongs to the field of air pollution control. The method uses H2 as a reducing agent, uses commercial activated carbon or coconut shell carbon to load metal nitrate, so that the load of metal is about 3 10wt.%;After the mixture is dissolved and dried by deionized water, it is calcined under N2 atmosphere, and then the metal active phase is reduced to a simple state under H2 atmosphere, so that it has reaction activity, and the preparation of the catalyst is completed;Then, in H2 atmosphere, the medium and low temperature (40 200 DEG C) reduction of N2O is realized. The catalyst efficiency of the present invention is high, and the activated carbon surface after the metal Ni load can reach 90% N2O removal rate under the conditions of 160 DEG C, and is low in price, effectively reducing the reduction cost of N2O, and the reaction products are all environmentally friendly (H2O and N2), without secondary pollution, and the catalyst life is longer.