1589results about "Amino compound preparation" patented technology

The invention relates to a preparation method of phenylmethylamine. The technical scheme adopted by the invention for mainly solving the problems of high catalyst loss, low production efficiency and high intermittent operation labor intensity is as follows: the preparation method of the phenylmethylamine comprises the following steps: mixing the raw material of cyanobenzene with a solvent material or at least one of one part of product materials in a mixing unit, introducing the mixture into a fixed bed hydrogenation reactor to be in contact with hydrogen and a catalyst and carry out multi-phase continuous hydrogenation reaction to obtain a product material containing phenylmethylamine, separating the product material to obtain a phenylmethylamine product, wherein the catalyst is a metal loaded catalyst; and the metal is selected from at least one of Pd, Pt, Cu, Ni, Mo and Fe. The preparation method can be used for preparing phenylmethylamine.

The invention relates to the technical field of scintillator materials and X-ray detection, in particular to a rare earth organic-inorganic hybrid complex scintillator and a preparation method and application thereof. The general formula of the rare earth organic-inorganic hybrid complex scintillator is [RE (L) 4] <->. [A] < + >, wherein RE is selected from Eu, Tb, Sm or Dy; l is a beta-diketone ligand; [A] < + > is selected from long-chain hydrophobic quaternary ammonium salt cations or heterocyclic quaternary ammonium cations which have the carbon atom number of C8-C20 and do not contain active functional groups. The rare earth organic-inorganic hybrid complex scintillator provided by the invention has good solubility and molecular-level dispersion capability. The scintillator film based on the rare earth organic-inorganic hybrid complex prepared by using the rare earth organic-inorganic hybrid complex has the characteristic of compatibility of high scintillator load and high light transmission, overcomes the problems of low scintillator load rate, poor transparency and limited imaging resolution of the traditional scintillator film, and has excellent practical value and popularization prospect.

The invention provides a preparation method and application of a cobalt-based catalyst, and relates to the technical field of chemical production. The cobalt-based catalyst includes cobalt, a transition metal element, and a Group IIIA element other than aluminum. Transition metal elements and IIIA group elements except aluminum are introduced into the cobalt-based catalyst, and the electronic structure and active sites of the cobalt-based catalyst are changed. The method not only can cooperate with catalytic reaction and promote the formation and conversion of intermediates, but also can enhance the adsorption and activation capability on substrates, reduce the reaction activation energy and guide the reaction to be carried out along a specific path. Finally, the effect of efficiently harvesting the 2-methyl pentamethylene diamine and the 3-methylpiperidine at the same time is achieved.

The invention discloses an acetonitrile hydrogenation catalyst and a preparation method and application thereof. The acetonitrile hydrogenation catalyst is a transition metal modified Pt supported catalyst. A transition metal precursor adopted in the transition metal improvement is an oxide containing transition metal elements; the transition metal element is selected from at least one of titanium, vanadium, manganese, iron, cobalt, nickel and copper; the acetonitrile hydrogenation catalyst also comprises a carrier; the carrier is selected from at least one of gamma-Al2O3, SiO2, an MOR molecular sieve and a ZSM-5 molecular sieve. The catalyst can effectively catalyze acetonitrile hydrogenation to prepare ethylamine under mild reaction conditions. The supported catalyst provided by the invention has excellent reaction performance such as high acetonitrile conversion rate in acetonitrile hydrogenation reaction, the reaction condition is mild, the operation is simple, and the catalyst is easy to prepare and can be recycled.

The invention discloses application of a Ni-based reverse-phase catalyst in catalytic hydrogenation reaction of a nitro compound, nitro in the nitro compound is hydrogenated to reduce amino, the Ni-based reverse-phase catalyst is of an M / Ni reverse-phase structure, metal Ni for dissociating hydrogen serves as a carrier, nano metal M oxide is loaded on the carrier to serve as a loading phase, and reverse-phase interface active sites are constructed; wherein the metal M is one or two of Ce, Zr, Al, Y and Mg, and the mole fraction of the load phase metal M is 5-50% based on the mole fraction of all the metals in the catalyst being 100%. The preparation method of the catalyst is simple and easy to implement, the catalyst has a non-traditional supported reversed-phase structure, the activity of the catalyst is more excellent than that of a traditional supported catalyst when the catalyst is applied to the nitro-compound hydrogenation process, a traditional Raney nickel catalyst can be effectively replaced, a reaction system is clean and safe, repeatability is good, effective recycling can be achieved, and the catalyst is suitable for industrial production. The method is suitable for industrial production and has a good application prospect.

The invention relates to the field of medicines. Specifically, the invention relates to a voltage-gated calcium channel alpha2delta subunit ligand containing a polycyclic gamma-aminobutyric acid structure as shown in a general formula I, a preparation method of the voltage-gated calcium channel alpha2delta subunit ligand and application of the voltage-gated calcium channel alpha2delta subunit ligand to treatment of chronic neuropathic pain, epilepsy and anxiety. # imgabs0 #

The invention provides a catalyst, a preparation method and application thereof, and a method for preparing primary amine by catalyzing nitrile compound hydrogenation, and particularly relates to the technical field of catalyst synthesis. The catalyst comprises a nickel / cobalt-based catalyst and a metal salt; wherein the nickel / cobalt-based catalyst is selected from any one of a supported nickel / cobalt-based catalyst, a Raney nickel / cobalt catalyst or a nickel / cobalt nanocrystal; the metal salt comprises any one or a combination of at least two of tungsten salt, molybdenum salt, vanadium salt, aluminum salt and cerium salt. The metal salt and the nickel / cobalt main catalyst have a synergistic effect: the surface electron density is adjusted through electron transfer, the hydrogen dissociation and cyano adsorption activation capacities are enhanced, the hydrogenation activity is improved, and the mild condition reaction is assisted; the surface chemical environment is changed or steric hindrance is borrowed, the primary amine selectivity is improved, and byproducts are inhibited; aluminum salt, cerium salt and the like inhibit nickel / cobalt agglomeration, increase active sites, enhance stability, prolong the service life and reduce the dosage.

The invention relates to the field of catalysts, in particular to a preparation method of a green and efficient copper catalyst. Comprising the following steps: (1) mixing basic cupric carbonate, ammonia water and water, adding ammonium salt at the same time, and preparing a copper ammonia solution as a precursor solution at room temperature; (2) mixing the precursor solution with a carrier or a carrier precursor to realize active component loading and catalyst preparation; and (3) filtering, washing, drying and roasting the mixed system in the step (2) to prepare the copper-based catalyst. According to the preparation method of the copper ammonia complexing precursor solution, preparation of the copper ammonia complexing solution at room temperature can be achieved, heating operation in the precursor preparation process is avoided, meanwhile, the nitrogen content of the system and nitrogen emission in the subsequent roasting process can be reduced by preparing the copper-based catalyst through the basic copper carbonate precursor, and efficient and green preparation of the catalyst is achieved.

The invention provides an organic-inorganic perovskite light absorption layer, a perovskite solar cell and respective preparation methods, the light absorption layer adopts three-source co-evaporation to form an inorganic material layer, then the inorganic material layer is coated with an organic ammonium salt, cesium halide and lead chloride are introduced in the preparation method, a large-framework CsPb2X5 (X = Cl / Br / I) quasi-two-dimensional layered structure is formed in the inorganic layer, and the perovskite solar cell is prepared. The distance between crystal surfaces in the inorganic framework is enlarged, and permeation of an organic ammonium salt solution is promoted. The content of the lead chloride is controlled by regulating the deposition rate of the lead chloride so as to form gradient distribution, so that energy level alignment of the light absorption layer and the hole transport layer is realized, and the efficiency of the perovskite solar cell is improved.

The invention relates to the technical field of quantum information devices, and particularly discloses a fullerene Y3N-C80-based probability bit device and a preparation method thereof.The probability bit device comprises fullerene Y3N-C80 molecules, graphene point electrodes, a metal electrode and a substrate, the fullerene Y3N-C80 molecules are connected to the two graphene point electrodes, the graphene point electrodes are connected to the metal electrode, and the metal electrode is connected to the substrate. The graphene point electrode and the metal electrode are located on the substrate, and the fullerene Y3NatC80 molecules are connected with the graphene point electrode through amide covalent bonds. According to the invention, the electric dipole moment is driven to overturn under the condition that different transverse source-drain bias voltages are applied to the probability bit device, so that the probability bit device can present different conductive states, the time proportion of the conductive states can be adjusted according to the magnitude of the applied transverse source-drain bias voltages, and the purpose of regulating and controlling the single-molecule probability bit device is achieved.

The invention belongs to the technical field of photovoltaic solar materials, and particularly relates to a high-conversion-efficiency perovskite precursor material and a preparation method thereof. The high-conversion-efficiency perovskite precursor material is composed of phenyl ammonium cesium composite cations, metal halide, an additive, a nuclear auxiliary agent and a solvent. By compounding phenylethyl ammonium iodide and cesium iodide, phenylammonium and cesium cations are introduced into perovskite crystal lattices, organic-inorganic balance of the material is optimized, phenylammonium promotes formation of a quasi-two-dimensional structure, and damp-heat stability is enhanced; cesium ions fill A-site gaps, so that crystal lattices are tighter, and the thermal stability and the photoelectric conversion efficiency are improved; the synergistic matching addition of the metal halide realizes band gap regulation and control and spectrum matching, and quaternary ammonium salt adjusts nucleation and grain growth, so that a uniform film structure is ensured, and defects are reduced; and guanidine salt passivates defects after crystal growth, stabilizes crystal lattices, and improves charge life and device efficiency.

The invention discloses a low-water-solubility medicine crystal as well as a preparation method and application thereof. The compound Z pamoate crystal form I has large characteristic diffraction peaks at one or more positions with diffraction angles 2 theta of 9.9 + / -0.2 degrees, 10.7 + / -0.2 degrees, 12.1 + / -0.2 degrees, 14.9 + / -0.2 degrees, 17.3 + / -0.2 degrees, 19.4 + / -0.2 degrees, 20.7 + / -0.2 degrees and 23.1 + / -0.2 degrees. Compared with an amorphous compound Z pamoate, the crystal provided by the invention has the advantages of good stability, no crystal transformation phenomenon, no obvious increase of related substances and low solubility; the production process is simple, only water is used as a solvent in the whole process, and no organic solvent is used; when the long-acting slow-release anti-Parkinson medicine composition is prepared from the compound Z pamoate crystal form I, the medicine encapsulation efficiency is high, the burst release is low, the composition continuously releases the medicine in vivo for more than 2 weeks, the administration frequency of a patient can be reduced, and the medication compliance is improved.

The invention belongs to the technical field of catalyst preparation, and provides an M2 diatomic site catalyst for a reaction for preparing phenylenediamine through dinitrobenzene hydrogenation and a preparation method and application thereof.The catalyst is formed by anchoring transition metal M diatomic sites to the surface of a diamond-graphene carrier and is prepared by taking nano-diamond powder as a raw material through a one-step reaction. Annealing treatment is carried out at the high temperature of 750-850 DEG C, a diamond-graphene carrier of an sp3 atsp2 core-shell structure is constructed, and the surface defect density of the diamond-graphene carrier is regulated and controlled in the process; and depositing metal species on the surface of the carrier through ALD double-step deposition to obtain the M2 diatomic site catalyst with high density and stable structure. The M2 diatomic site catalyst is applied to a reaction for preparing a corresponding phenylenediamine compound through hydrogenation of a dinitrobenzene compound, and high conversion rate and high selectivity can be achieved with low metal loading capacity under mild conditions. The method can be popularized to construction of diatomic catalysts of various transition metals, and has a wide application prospect.

The present invention generally relates to a field of material science and chemistry. Specifically, the present invention relates to synthesis and characterization of lead-free hybrid organic-inorganic Perovskite compounds for metal ion sensing applications. More particularly, the present invention relates to lead-free low dimensional manganese (Mn)- and copper (Cu)- based hybrid organic-inorganic perovskites (HOIPs) for visual fluorometric Pb2+ ion detection. Further, the present invention relates to synthesis of lead-free low dimensional manganese (Mn)- and copper (Cu)-based hybrid organic-inorganic perovskites (HOIPs) via mechanochemical synthesis methodology.

The invention relates to the technical field of chloronitrobenzene hydrogenation catalysts, in particular to a chloronitrobenzene hydrogenation catalyst and a preparation method thereof.The method comprises the steps that 1, after an active metal source, a carbon source, a template agent and a solvent are mixed, the solvent is removed, and a solid is obtained; (2) roasting the solid obtained in the step (1) in an inert gas atmosphere to obtain a roasted product; and (3) contacting the roasted product with an acid solution, separating, washing and drying to obtain the hydrogenation catalyst. The active metal source is soluble salt of active metal, and the active metal is selected from one or more of Fe, Co, Ni, Cu and Zn; the template agent is selected from one or more of magnesium-containing compounds. According to the preparation method of the hydrogenation catalyst, the non-noble metal is selected, the pickling solution can be recycled, the catalyst is environment-friendly, the production and recovery cost is reduced, and the catalyst is excellent in performance and has no dechlorination phenomenon when being used for preparing chloroaniline through hydrogenation of chloronitrobenzene.

The invention relates to a method and a device for preparing an organic alkali salt of bis (fluorosulfonyl) imide. Ammonia gas, sulfuryl fluoride and liquid organic alkali are adopted as reaction raw materials, and under the condition that no solvent is added or a small amount of solvent is added, the raw materials react through pressurization to generate the organic alkali salt of the bis (fluorosulfonyl) imide. As no solvent is used or only a small amount of solvent is used in the reaction, the chroma of the obtained product is relatively low, and subsequent preparation of lithium bis (fluorosulfonyl) imide as a precursor is facilitated. The invention provides a simple and effective method for reducing the chromaticity of the imidodisulfuryl fluoride salt.

The invention discloses a method for catalyzing and photo-initiating nitro reduction through ferric trichloride, and belongs to the field of pharmaceutical compound synthesis. According to the method, transition metal salt is mainly used as a catalyst for reaction, inorganic acid and organic acid are used as additives, nitryl is reduced into amino under the condition of air or nitrogen, the catalytic efficiency is high, the yield of reduction products is high, the production cost is greatly reduced, and the method is suitable for synthesis and amplification of later compounds and has good application prospects. The method has the advantages of no expensive metal catalyst or reducing agent, simple preparation process, high efficiency, environmental protection, safety and cost saving.

The utility model discloses a diphenylmethane series amine reaction device, and belongs to the technical field of integrated condensation reactors, the diphenylmethane series amine reaction device comprises a salifying-condensation reactor, a plug flow reactor is arranged on one side of the salifying-condensation reactor, the salifying-condensation reactor comprises a reaction kettle, a double-layer hollow stirring shaft is arranged in the reaction kettle, and the double-layer hollow stirring shaft is connected with the plug flow reactor. A static mixer is arranged on one side of the reaction kettle; the multi-nozzle static mixer with the built-in condensation assembly can strengthen the mixing effect, the static mixer is directly connected with the reaction kettle, salt forming reaction liquid can be effectively prevented from staying in a pipeline and reducing the color of a system, and the hollow stirring shaft is beneficial to rapid mixing and timely removal of reaction heat; according to the device, aniline and hydrochloric acid as well as aniline hydrochloride and formaldehyde are rapidly and uniformly mixed, reaction heat is removed, local overheating and hot spots are avoided, generation of by-products can be reduced, colors of products and downstream products are effectively improved, the quality of the downstream products is improved, and the device is suitable for large-scale industrial production and high in synthesis efficiency.

The invention discloses a preparation method of a nylon 66 salt crystal, which is characterized in that in the method, a nylon 66 salt aqueous solution is subjected to secondary crystallization and a rotary pressure filter process to prepare the nylon 66 salt crystal. According to the technology, the problems of low single-stage yield and large sewage discharge amount are solved by adopting secondary crystallization and evaporation condensate recycling, and the processes of centrifugation, drying, cyclone separation and the like are reduced by replacing a centrifugal machine with a rotary pressure filter, so that the energy consumption per ton of products is reduced.

The invention discloses a preparation method and application of an oil-soluble heteropolyacid ionic liquid catalyst. The catalyst is composed of organic cations and inorganic anions, the cations are one of quaternary ammonium, imidazole and pyridine cations containing long-chain alkyl, the anions are heteropolyacid anions, the long-chain alkyl enables the catalyst to have good oil solubility, the catalyst can be efficiently dispersed in the waste grease, heteropolyacid provides active sites, and the catalyst can be used for treating the waste grease. Nano-scale active particles are formed after in-situ vulcanization, and the catalytic hydrogenation effect is achieved. The invention also provides a preparation method of the oil-soluble heteropolyacid ionic liquid catalyst, the catalyst can be prepared from tertiary amine and halogenated hydrocarbon through three-step reaction of alkylation, anion exchange and acid-base neutralization, the preparation process is simple, a highly toxic reagent is avoided, and the cost is low. The catalyst provided by the invention can be used for catalytic hydroisomerization of various waste oils and fats, has the characteristics of high conversion rate, low coking rate and high product calorific value, and has relatively high industrial application potential.

The invention belongs to the field of methanol conversion and utilization, and particularly relates to a three-layer multi-core structure catalyst for high-selectivity synthesis of monomethylamine and a preparation method of the three-layer multi-core structure catalyst. The core layer of the catalyst is gamma-aluminum oxide, the middle layer of the catalyst is a mordenite (MOR) molecular sieve, and the outer layer of the catalyst is porous SiO2. The preparation of the multi-core MOR layer adopts a steam-assisted crystallization method, the preparation method is simple, no organic waste liquid is generated, the preparation method is environment-friendly, the multi-core MOR layer can be used in a reaction for preparing methylamine through continuous gas phase catalytic amination of methanol after being modified by ammonium ion exchange and chemical liquid phase deposition (CLD), the methanol conversion rate reaches 98.6% under the reaction conditions that the temperature is 340 DEG C, the methanol liquid hourly space velocity is 1.5 h <-1 >, the ammonia-alcohol ratio is 3 and the pressure is normal, and the method is suitable for industrial production. The mass ratio of monomethylamine is greater than 60%, and the method has a good application prospect.

The invention discloses clethodim diamine salt as well as a preparation method and application thereof. The stability of the clethodim diamine salt (clethodim 1, 4-butanediamine salt, clethodim 1, 5-pentanediamine salt and clethodim 1, 6-hexamethylenediamine salt) provided by the invention is superior to that of clethodim and clethodim monoamine salt (such as clethodim tert-butylamine salt); meanwhile, the herbicidal activity of the clethodim diamine salt (clethodim ethylenediamine salt, clethodim 1, 4-butanediamine salt and clethodim 1, 5-pentanediamine salt) is superior to that of clethodim tert-butylamine salt, and the herbicidal activity of the clethodim 1, 5-pentanediamine salt is superior to that of clethodim. Most clethodim diamine salt is low in degradation rate in the high-temperature heat storage process and easier to store for a long time, the clethodim diamine salt is higher in melting point than clethodim monoamine salt (such as clethodim tert-butylamine salt), granulation and smashing are more convenient, the clethodim diamine salt can be used as a herbicide to be processed into solid dosage forms such as water dispersible granules and the like, the physical performance of the preparation is better, and the preparation has good application prospects. The commercialization prospect is good.

The invention discloses a composite high-entropy alloy catalyst and a preparation method and application thereof.The catalyst comprises a carrier and metal components loaded on the carrier, the carrier is aluminum oxide, the metal components comprise composite precious metal and non-precious metal, the precious metal is one or more than two of platinum, gold, palladium, ruthenium and rhodium, and the non-precious metal is one or more than two of platinum, gold, palladium, ruthenium and rhodium. The non-noble metal is a combination of molybdenum, nickel, copper and manganese; the precious metal part is precious metal nanoparticles, and the rest part exists in the structure of the high-entropy alloy compound. The catalyst provided by the invention has high activity of a traditional supported catalyst and high stability and structural strength of HEA.

The invention discloses a green method for synthesizing hexamethylenediamine, which comprises the following steps: by taking adiponitrile and ethanol as solvents as raw materials and taking a porous cobalt-based catalyst and a solid base catalyst which are mixed according to a certain ratio as catalysts, reacting to obtain hexamethylenediamine at the reaction temperature of 70-90 DEG C under the reaction pressure of 2-5MPa H2 and the stirring rotating speed of 500-1000rpm. In the hydrogenation process, the two catalysts are mixed and added according to a certain proportion, and efficient conversion of adiponitrile and high selectivity of hexamethylenediamine can be realized under mild conditions. The catalyst used in the method is simple in preparation process, low in cost and easy to recover, the hexamethylenediamine synthesis process is green, and good economic benefits and application prospects are embodied. The method provided by the invention solves the problem that in the traditional process of synthesizing hexamethylenediamine through adiponitrile hydrogenation, inorganic alkali, such as sodium hydroxide, ammonia water and other strong corrosive additives, needs to be added, so that the conversion efficiency and selectivity are improved, the requirement on equipment is reduced, and meanwhile, the energy consumption of later separation is reduced.

The present invention provides a DAM preparation method beneficial to reducing the content of diphenylmethane diamine. During the preparation of DAM by using the method of the present invention, the condensation reaction characteristic index R is controlled to meet specific requirements, which makes it beneficial to obtaining a DAM product with an appropriate content of diphenylmethane diamine in DAM. The method comprises the following steps: (S1) bringing aniline into contact with at least a part of hydrochloric acid for a reaction to obtain aniline hydrochloride; (S2) subjecting the aniline hydrochloride to a condensation reaction with an aqueous formaldehyde solution to obtain a condensation reaction solution, wherein the aqueous formaldehyde solution is introduced by a single addition or by multiple additions, and in step (S2), a part of hydrochloric acid is optionally added; and (S3) subjecting the condensation reaction solution to a transposition reaction to obtain a transposition reaction solution, wherein in step (S3), a part of hydrochloric acid is optionally added; and during steps (S1) to (S3), the condensation reaction characteristic index R is controlled to satisfy 1<R<1.05, more preferably 1.01<R<1.04.

The invention provides a catalytic material, a preparation method thereof and application of the catalytic material in high-purity ethyl aliphatic amine, and belongs to the technical field of fine chemical engineering. The catalytic material provided by the invention has a porous structure, so that the specific surface area of the catalytic material can be remarkably increased, more active sites can be used for contact between reaction raw materials and a catalyst, the reaction process is accelerated, meanwhile, the retention time of the reaction raw materials on the surface of the catalyst is prolonged by the porous structure, and the conversion rate of the reaction raw materials (liquid ammonia) is further improved; active components are loaded on the surface of the AB2O4 type porous composite transition metal oxide, so that the number of active sites can be further increased, and the conversion rate of liquid ammonia is further improved. Results of the embodiment show that when the catalytic material provided by the invention is used for preparing ethyl aliphatic amine by an ethanol catalytic amination method, the conversion rate of liquid ammonia is 95% or above.

This invention discloses a method for modifying the support medium of a Pd catalyst and its application. The preparation method of the Pd catalyst includes reacting zirconium salt, organic ligands, and acid to obtain a support UiO-66-X; then loading Pd onto the support UiO-66-X and reducing it to obtain the catalyst Pd@UiO-66-X; the organic ligands include 2-nitroterephthalic acid, 2-methoxyterephthalic acid, 2-aminoterephthalic acid, and terephthalic acid, and X is selected from NO2, OMe, NH2, and H. This invention changes the surface electron cloud density of the supported Pd nanoparticles by changing the ligands (-NO2, -H, -OMe, -NH2) of the support UiO-66, resulting in different abilities to activate hydrogen, thereby regulating the dehydrogenation and hydrogenation reactions in the racemicization process of Pd catalysis. The synergistic effect of different ligands with Pd changes the racemicization catalytic activity.

The invention relates to a preparation method of a carbon-based gold-containing bimetallic catalyst. The specific method comprises the following steps: carrying out secondary doping on eigenstate polyaniline, carrying out high-temperature pyrolysis in an inert atmosphere to obtain a heteroatom-doped carbon-based carrier, and changing the variety, the content and the distribution of heteroatoms on the carbon surface of the carrier by adjusting the variety and the content of acid. And preparing gold-containing bimetallic nanoparticles by using a colloid method, and depositing bimetallic particles by virtue of adsorption of the carbon carrier and bimetallic to obtain the carbon-based gold-containing bimetallic catalyst. Wherein the doping element can anchor and disperse the noble metal, and the introduced second metal can improve the hydrogenation activity of the catalyst. The catalyst is simple in preparation process, good in activity, excellent in selectivity and excellent in cycling stability, is particularly suitable for a reaction for preparing 4-chloroaniline through catalytic hydrogenation of 4-chloronitrobenzene, and has good application potential.

The invention relates to a method for synthesizing 1, 4-butanediamine and co-producing NMP (N-Methyl Pyrrolidone), which comprises the following steps: dissolving 1, 4-butanedinitrile in a solvent, and reacting with introduced hydrogen and carbon dioxide under the action of a bi-component composite catalyst to obtain a product containing 1, 4-butanediamine, carrying out separation and purification treatment on the obtained product containing 1, 4-butanediamine to obtain 1, 4-butanediamine and NMP (N-Methyl Pyrrolidone); the active components of the bi-component composite catalyst comprise nickel salt and copper salt. According to the method disclosed by the invention, the carbon dioxide carbon source is introduced, so that the conversion of the byproduct butyrolactam into the NMP product with a high added value is realized, the combined yield of the 1, 4-butanediamine and the NMP and the conversion rate of the 1, 4-butanedinitrile are relatively high, and the economic benefit is remarkably improved.