72 results about "Adiponitrile" patented technology

Provided in the present application are a secondary battery and an electronic device. The secondary battery comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte solution. The positive electrode sheet comprises a composite current collector and a positive electrode material layer provided on at least one surface of the composite current collector. The positive electrode material layer comprises a lithium nickel cobalt manganese oxide compound. On the basis of the total molar amount of metal elements other than lithium, the molar percentage content of nickel in the lithium nickel cobalt manganese oxide compound is X, wherein X>80%. The electrolyte solution comprises adiponitrile and succinonitrile. On the basis of the mass of the electrolyte, the mass percentage content of adiponitrile is B1, and the mass percentage content of succinonitrile is B2, wherein 0.01≤X×B1 / B2≤90. The present application can improve the capacity retention ratio and lithium ion acceptance of a secondary battery after a high- or low-temperature impact test.

The application discloses a supported PtNi b-site adiponitrile hydrogenation catalyst and a preparation method and application thereof, and belongs to the technical field of thermal catalysis. The preparation method comprises the following steps: (1) dispersing ammonium tungsten oxide pentahydrate in water, adding an acidic solution, condensing and refluxing, heating and reacting, centrifugal filtering and drying the precipitate to prepare tungsten oxide nanorod carriers; (2) dispersing the tungsten oxide nanorod carriers in a solvent, adding a platinum salt solution, stirring, evaporating the solvent, and calcining the solid to prepare a catalyst precursor; and (3) dispersing the catalyst precursor in a solvent, adding a nickel salt solution, stirring, evaporating the solvent, and calcining the solid to prepare the catalyst. The application introduces Pt and Ni on the reducible WO3 carrier to construct a bimetallic active site catalyst, and the bimetallic active site catalyst can catalyze the reaction of adiponitrile hydrogenation to prepare primary amine under mild conditions, has the characteristics of low noble metal loading, high activity and high selectivity, and has important industrial application value.

The invention discloses a system and a method for preparing adiponitrile by electrolyzing acrylonitrile, and relates to the technical field of chemical product preparation, reaction and separation are efficiently coupled through process innovation, so that an acrylonitrile recovery unit is omitted, the safety is improved, and a modularized external reaction area capable of being flexibly expanded is introduced into the design of a reactor. The design aims to fundamentally break through the physical limitation of traditional equipment on the electrode area, and a brand new technical path is provided for realizing high-efficiency and low-energy-consumption large-scale industrial production. Nearly complete conversion of acrylonitrile is realized through the rectifying tower, and a tower kettle product does not contain unreacted acrylonitrile, so that a complicated acrylonitrile recovery tower and a circulating system do not need to be arranged in a subsequent separation system, the process is remarkably shortened, and equipment investment and operation energy consumption are reduced.

The application provides an electrolyte for electrolysis of acrylonitrile to adiponitrile, which comprises acrylonitrile, modified quaternary ammonium salt and water, wherein the modified quaternary ammonium salt comprises functional groups shown in formula (a) and formula (b) simultaneously, the functional group shown in formula (b) is wherein R1-R4 in formula (a) are alkyl groups with carbon number of 0-6; formula (b) is an alkyl group with carbon number of n, n=1-20; the structure of the modified quaternary ammonium salt contains 2-4 functional groups shown in formula (a). A method for electrolysis of acrylonitrile to adiponitrile by using the electrolyte is also disclosed. The electrolyte for electrolysis of acrylonitrile to adiponitrile contains modified quaternary ammonium salt, thereby improving the conversion rate and selectivity of electrolysis of acrylonitrile to adiponitrile.

The application discloses a preparation method of an iron-based composite anode for electrochemical synthesis of adiponitrile, and the iron-based composite anode comprises an iron base material which can be pure iron, carbon steel, 304, 316L, 904L, 2204 and the like, and a tungsten carbide bottom layer and a doped active layer are sequentially arranged on the surface of the iron base material from inside to outside. The tungsten carbide bottom layer is sprayed on the surface of the iron base material, and the doped active layer is prepared on the tungsten carbide bottom layer. In the electrochemical synthesis of adiponitrile, the iron-based composite anode is used as an anode. The iron-based composite anode improves the adhesion between the doped active layer and the base material, improves the electric conductivity, and improves the corrosion resistance. In the electrochemical synthesis of adiponitrile, the problem of easy corrosion of the anode in electrolysis is solved, the service life is prolonged, and the yield of adiponitrile and the electrolytic current efficiency are improved.

This invention relates to a method for preparing hexamethylenediamine by hydrogenation of adiponitrile in the presence of a Raney nickel catalyst, wherein a Raney nickel catalyst modified by treatment with carbon monoxide or carbon dioxide in a liquid medium is used.

The application provides a method for synthesizing adiponitrile by selective ammoxidation of epoxycyclohexane. The purpose of the application is to simulate and optimize the process of synthesizing adiponitrile by one-step direct ammoxidation of epoxycyclohexane, and to develop a new type of multiphase composite metal vanadium-based oxide catalyst, which is composed of Co a V b P c Mo d MNOx / TiO2, the active elements of which include vanadium element V, cobalt element Co, phosphorus element P and molybdenum element Mo, M is an auxiliary metal element (Mn, Cr, Fe or Ni), N is an alkali metal (Na, K or Cs); the value range of a is 0.2-1.2; the value range of b is 0.8-1.5; the value range of c is 0.1-0.23; the value range of d is 0.07-0.35; x is the proportion of oxygen atoms required to meet the oxidation state of metal. The catalyst has the advantages of simple preparation, good cycle stability, high yield and the like. The yield and product purity of adiponitrile are improved, the energy consumption in the production process of adiponitrile is reduced, and a breakthrough is realized in the production technology of adiponitrile.

This invention relates to the field of organic synthesis technology and discloses a method and system for preparing adiponitrile. The method includes: S1: atomizing molten adipic acid and mixing it with ammonia gas, followed by an ammoniation reaction to generate an ammoniation product; S2: dividing the ammoniation product into two parts, a and b. Part a undergoes a countercurrent, non-contact heat exchange with hot material to generate crude adiponitrile through heating and dehydration, while part b is recycled back to step S1 to participate in the reaction. The ratio of the ammoniation product in part a to that in part b is (1~5):1. The temperature of the hot material is higher than the temperature of the ammoniation product in part a. This invention improves the efficiency of the ammoniation reaction, reduces the decomposition side reactions of adipic acid and the residue of adipic acid, and significantly improves the conversion rate of the dehydration reaction and the selectivity of adiponitrile.

This invention provides a cleaning agent for nitrile coking deposits, its preparation method, and its application, relating to the field of cleaning agent technology. The cleaning agent for nitrile coking deposits of this invention uses adiponitrile and methylglutaronitrile, which have highly similar molecular structures to the coking deposits, as the main solvents, working with ligands, surfactants, and corrosion inhibitors to achieve efficient dissolution and stripping. The preparation method of the cleaning agent of this invention utilizes optimized phase-separation emulsification and dehydration processes to efficiently integrate hydrophilic and lipophilic functional components, producing a stable and homogeneous non-aqueous cleaning agent. The application of the cleaning agent of this invention in cleaning nitrile reactor residues, through closed-loop heating and online diversion filtration processes, can efficiently dissolve and strip coking deposits from the inner walls of equipment and complex pipelines; it achieves simultaneous cleaning, separation, and recovery, significantly reducing hazardous waste generation and ensuring operational safety and stability throughout the process.

The invention belongs to the technical field of green chemistry, and particularly relates to a method for modifying a flexible ring region of nitrile hydratase and application of the method. The specific method comprises the following steps: carrying out double mutation on nitrile hydratase sites alpha D38 and alpha I152, or carrying out double mutation on nitrile hydratase sites alpha E157 and beta G197, or carrying out quadruple mutation on the nitrile hydratase sites alpha D38, alpha I152, alpha E157 and beta G197, so as to construct the nitrile hydratase mutant with improved thermal stability. The thermal stability of the nitrile hydratase modified by mutation is greatly improved. The mutant nitrile hydratase can keep the conformation and activity for a longer time, the resistance to external thermal interference is enhanced, and the half-life period for catalyzing an adiponitrile reaction is remarkably prolonged, which is the inherent excellent attribute of the mutant nitrile hydratase as a catalyst, and the mutant nitrile hydratase has important reference significance for research on improvement of the thermal stability of the nitrile hydratase.

The invention discloses a preparation method of 1-amino-2-cyano-1-cyclopentene, which comprises the following steps: 1, preparing a mixed solution, namely mixing a first organic solvent with super alkali in a protective gas atmosphere, heating by adopting a nano infrared energy-saving electric heating coil, stirring, uniformly mixing and dissolving to obtain the mixed solution; the super base is selected from one of potassium tert-butoxide, sodium tert-butoxide, sodium ethoxide, sodium methoxide and sodium hydroxide; 2, cyclization reaction: dropwise adding adiponitrile into the mixed solution, and continuously carrying out infrared heat preservation reaction for 3-8 hours to obtain a reaction solution of 1-amino-2-cyano-1-cyclopentene; 3, cooling crystallization and filtration: cooling the reaction liquid to-10-5 DEG C, standing for crystallization, and carrying out pressure filtration in a protective gas atmosphere to obtain an ACCP crude product and a filtrate; and 4, recrystallizing and refining to obtain a pure product. The method is mild in reaction condition, low in energy consumption, good in product yield and high in product purity, solves the problems of high solvent toxicity, low yield and high environmental protection pressure in the prior art, and is suitable for production of medicine and pesticide intermediates.

The application discloses a method for preparing hexamethylene diamine by hydrogenation of adiponitrile, which comprises the following steps: preparing a reaction solution by hydrogenation reaction of adiponitrile, and preparing the hexamethylene diamine by post-treatment; wherein the hydrogenation reaction system further comprises an adsorbent and mother liquor generated in the post-treatment process. By returning the mother liquor containing nitrogen heteroheptacycle Schiff base, amide and other impurities of the hydrogenation ammonia by-product to the reactor and adding the adsorbent in the reaction, the content of the reaction by-product AMCPA can be reduced to below 5 mg / kg, and the polarographic value of the hexamethylene diamine product is less than or equal to 20 mmol IB / t-HMD, compared with the production process without recycling the mother liquor according to the application.

This invention discloses a method for pretreatment and purification of crude adiponitrile prepared by butadiene hydrocyanation, belonging to the field of organic chemical product refining technology. The method includes: continuous multi-stage countercurrent washing of crude adiponitrile containing metal compound impurities using a brine solution; transferring the metal compound impurities to the aqueous phase through extraction; after oil-water separation, adjusting the pH of the aqueous phase to precipitate the metal compounds; obtaining a solid metal compound and a filtrate through solid-liquid separation; recycling the filtrate as washing liquid; dehydrating the oil phase to obtain a dehydrated adiponitrile solution suitable for entering a distillation system; and distilling the dehydrated adiponitrile solution to obtain qualified adiponitrile. This invention can efficiently remove residual metal compounds from crude adiponitrile, with a removal rate greater than 99%, and the metal content in the oil phase after treatment is less than 10 ppm. It does not introduce nitrogen-containing impurities such as ammonia / amines, resulting in high product purity. The process is simple, energy consumption is low, the washing liquid can be recycled, and metal resources are easily recovered, showing good prospects for industrial application.

The invention relates to the technical field of catalysts, in particular to a catalyst, a preparation method thereof and a preparation method of hexamethylenediamine. The catalyst provided by the invention comprises a carrier, an active component and an auxiliary agent, the active component comprises Ni; the auxiliary agent comprises Fe and Cr. According to the catalyst disclosed by the invention, the bimetallic auxiliaries Fe and Cr are introduced, so that the content of zero-valent Ni is effectively increased, the hydrogenation activity is promoted, and the reaction process is accelerated; the catalyst is used for preparing hexamethylenediamine through adiponitrile hydrogenation, and the conversion rate of adiponitrile and the selectivity of hexamethylenediamine under mild conditions are improved.

The present disclosure relates to a method for preparing adiponitrile, comprising the following steps: contacting cyclohexanone oxime, an ammonia source and a catalyst to perform a catalytic reaction; the catalyst comprises a hierarchical pore Silicalite-1 molecular sieve, and the hierarchical pore Silicalite-1 molecular sieve has a plurality of cavity structures in the crystal. The present disclosure does not need to use toxic and harmful solvents, and has higher cyclohexanone oxime conversion rate and adiponitrile selectivity.

Provided in the present application are a secondary battery and an electronic device. The secondary battery comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte solution. The positive electrode sheet comprises a composite current collector and a positive electrode material layer provided on at least one surface of the composite current collector. The positive electrode material layer comprises a lithium nickel cobalt manganese oxide compound. On the basis of the total molar amount of metal elements other than lithium, the molar percentage content of nickel in the lithium nickel cobalt manganese oxide compound is X, wherein X>80%. The electrolyte solution comprises adiponitrile and succinonitrile. On the basis of the mass of the electrolyte, the mass percentage content of adiponitrile is B1, and the mass percentage content of succinonitrile is B2, wherein 0.01≤X×B1 / B2≤90. The present application can improve the capacity retention ratio and lithium ion acceptance of a secondary battery after a high- or low-temperature impact test.

Provided in the present invention is a hydrocyanation method. The hydrocyanation method is carried out in a reaction system containing an aromatic amine under the action of a nickel-monodentate phosphite ligand catalyst. The structure of the aromatic amine is as shown in formula I, wherein X1-X3 groups and Y1-Y3 groups separately comprise any one of hydrogen, an alkyl group, an alkoxy group, an alkylamino group, a hydroxyl group and an amino group. The hydrocyanation method of the present invention comprises the nickel-monodentate phosphite ligand catalyst and the aromatic amine having a specific structure; therefore, the time of the hydrocyanation method can be catalytically shortened, the accumulation of a ligand hydrolysate can be substantially reduced or eliminated, and the loss of the catalyst during the reaction can also be reduced. In the hydrocyanation method of the present invention, the reaction efficiency is high, the performance of the catalyst is stable, and the conversion rate of the raw materials and the selectivity of the product are higher; therefore, the hydrocyanation method can be used in a preparation process for large-scale preparation of adiponitrile from butadiene by means of a direct hydrocyanation method.

A method for producing adiponitrile from waste PA-66 plastic via electrochemical hydrogen evolution coupled with electrochemical oxidation belongs to the fields of electrochemical hydrogen evolution and waste plastic recycling and upgrading. Industrial waste PA-66 plastic undergoes simple depolymerization to obtain adipic acid crystals and a hexamethylenediamine solution of acceptable purity. The hexamethylenediamine solution is directly used as the electrolyte, employing V-Ni2P catalyst, and undergoes continuous, long-term electrolysis in a constructed two-electrode electrolytic cell. Through electrolysis, hydrogen gas is obtained at the cathode, and adiponitrile is obtained at the anode, with both selectivity and yield approaching 100%. After complete reaction, the adiponitrile separates from the aqueous solution, directly yielding a high-purity adiponitrile product. This process is simple to operate, low-cost, high-return, and efficiently produces green hydrogen while upgrading waste plastics into chemicals, maximizing the utilization of renewable energy. It paves a path for the commercialization and sustainable production of high-value bulk chemicals and clean H2 fuels from PA-66 waste plastics, and has broad application prospects.

The application discloses a preparation method of hexamethylene diamine, which comprises the following steps: 1) catalyst pretreatment: mixing a hydrogenation catalyst and a modifier, and treating under a nitrogen atmosphere for 0.5-2h to obtain a modified catalyst; and 2) hydrogenation reaction: hydrogenating adiponitrile into hexamethylene diamine in the presence of the modified catalyst. The hexamethylene diamine prepared by the method has the advantages of good catalyst stability, high product yield and low DCH generation amount, and the problem of frequent shutdown of a device can be avoided due to the non-introduction of inorganic alkali.

The invention discloses an integral hierarchical porous reticular nickel catalyst as well as a preparation method and application thereof, and belongs to the technical field of chemical catalytic materials. According to the catalyst, a commercial nickel net is used as a supporting framework, and a porous nickel active layer with micron-level thickness is constructed on the surface of a nickel net wire, so that an integral structure with macro-mesoporous-micro hierarchical pore channels is formed. The preparation method comprises the following steps: burying the nickel net in mixed powder containing aluminum powder and an activating agent (aluminum chloride or ammonium chloride), and carrying out high-temperature roasting in an inert atmosphere to form a nickel-aluminum alloy layer on the surface of the nickel net; and then aluminum is removed through alkali liquor corrosion, and the monolithic catalyst with the raney nickel type porous structure on the surface is obtained. The catalyst has the advantages of excellent mass and heat transfer performance, high specific surface area, abundant active sites, simple preparation process and low cost. When the catalyst is applied to an adiponitrile hydrogenation reaction, high activity and high selectivity are shown. Assistants such as Fe, Cr, Mo, Co, Zn and the like can be introduced through post-modification, so that the performance is further improved.

The application provides an electrolyte and an electrolysis method for electrocatalytically preparing adiponitrile from acrylonitrile. 10 R1-R4 are respectively and independently C1-C6 alkyl. The electrolyte for electrocatalytically preparing adiponitrile from acrylonitrile contains modified quaternary phosphonium salt, which can improve the selectivity of acrylonitrile and further improve the yield.

This invention discloses a method for hydrogenating adiponitrile. The method involves quaternizing cyclohexylimine to obtain a quaternary ammonium base, which is then reused as a base auxiliary in the hydrogenation of adiponitrile. Compared to existing hydrogenation processes, this method can reduce the total content of other byproducts, 1,2-cyclohexanediamine (DCH) and dihexyltriamine (BHT), by approximately 50%, thereby improving reaction efficiency.

The application relates to a non-aqueous calcium battery electrolyte and a non-aqueous calcium battery containing the electrolyte, and belongs to the technical field of batteries. The electrolyte comprises an electrolyte calcium salt, an amine organic solvent and a nitrile additive; wherein the concentration of the electrolyte calcium salt in the amine organic solvent is 0.05-5 mol / L, and the addition amount of the nitrile additive is 0.01-10 wt% of the total mass of the electrolyte calcium salt and the amine organic solvent. The nitrile additive is any one or a combination of 3,3-oxydipropionitrile, hexanetricarbonitrile, ethoxymethylenemalononitrile, adiponitrile, butanedinitrile, maleonitrile, 3-methoxypropionitrile, 4,4-dimethoxybutyronitrile and 1,2,3-tris(2-cyanoethyloxy)propane. Compared with the prior art, the non-aqueous calcium battery electrolyte of the application can construct an interface with stability and ionic conductivity when applied to a calcium battery negative electrode, so that the calcium battery exhibits excellent cycle performance and rate performance.

The application provides a hydrocyanation reaction method, which is carried out in a reaction system containing an aromatic amine under the action of a nickel-bidentate phosphite ligand catalyst, and the structure of the aromatic amine is: wherein, X 1 - X 3 groups and Y 1 - Y 3 groups each include any one of hydrogen, an alkyl group, an alkoxy group, an alkylamine group, a hydroxyl group and an amino group. The hydrocyanation reaction method provided by the application not only has high reaction efficiency, but also can significantly reduce or eliminate the accumulation of ligand hydrolysis products, and stabilize the effective content of the catalyst in the reaction system; in addition, the hydrocyanation reaction method provided by the application has high reaction efficiency, few side reactions, high raw material conversion rate and high product selectivity, and can meet the needs of a large-scale production process of adiponitrile prepared by directly hydrocyanating butadiene.

The application discloses a system device and a method for preparing adiponitrile by ultrasonic coupling and low-temperature amidation in a rotating packed bed, and relates to the technical field of chemical engineering. The system device comprises a raw material tank, an immersed rotating packed bed, an ultrasonic probe, a supergravity reactor, a circulating tank, a pipeline heater, a gas-liquid separation tank, an acid washing tower, a storage tank, a raw material pump and a circulating pump. The system device solves the technical problems of serious thermal decomposition of adipic acid, many side reactions, equipment coking and short continuous operation period caused by the fact that the neutralization reaction and the dehydration reaction share the same high-temperature interval in the prior art.

The application discloses electrolyte for electrolysis of acrylonitrile to adiponitrile, which comprises acrylonitrile, modified quaternary ammonium salt and water, wherein the modified quaternary ammonium salt comprises functional groups shown in formula (a), formula (b) and formula (c) simultaneously, the functional group shown in formula (a) is R1-R9-C-N+<, the functional group shown in formula (b) is R1-R9-C-N+<, and the functional group shown in formula (c) is R1-R9-C-N+<, or wherein R1-R9 in formula (a) are alkyl groups with carbon number of 0-6 respectively; R1-R9 in formula (b) are alkyl groups with carbon number of 1-6 respectively; formula (c) is an alkyl group with carbon number of n, and n=1-20; the structure of the modified quaternary ammonium salt contains at least 1-3 functional groups shown in formula (a), at least one functional group shown in formula (b) and at least one functional group shown in formula (c); and the functional group shown in formula (a) or (b) can be connected to the functional group shown in formula (c) only. The application also discloses a method for electrolysis of acrylonitrile to adiponitrile by using the electrolyte. The electrolyte for electrolysis of acrylonitrile to adiponitrile contains the modified quaternary ammonium salt, thereby improving the conversion rate and selectivity of electrolysis of acrylonitrile to adiponitrile. 10 12 ​​

The present application relates to the field of catalyst, discloses a heterogeneous catalyst and its preparation method and application, and a method for preparing adiponitrile, the method comprises the following steps: (1) in the presence of polyvinyl alcohol and initiator, styrene containing amino is copolymerized with divinylbenzene to obtain a carrier; (2) in the presence of a basic environment and a solvent, the carrier is mixed with chlorin metal complex to obtain a heterogeneous catalyst; the chlorin metal complex is obtained by the reaction of chlorin and metal salt. The heterogeneous catalyst prepared by the method of the present application has high catalytic activity when used in the preparation of adiponitrile by ammoximation method, can improve the conversion rate of six-membered ring compounds and the selectivity of adiponitrile, the catalyst is easy to separate and can be reused when used in the synthesis of adiponitrile by ammoximation method.

The invention relates to a preparation method of 1, 3, 6-hexane trinitrile, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: S1, preparing 1-amino-2-cyano-1-cyclopentene by taking adiponitrile as a raw material under a non-nucleophilic strong alkali condition, and purifying and drying the 1-amino-2-cyano-1-cyclopentene; s2, in the presence of solid alkali, 1-amino-2-cyano-1-cyclopentene and the dried acrylonitrile are subjected to a reaction, and a reaction solution is obtained; and S3, carrying out dehydration treatment on the 1, 3, 6-hexanetricarbonitrile reaction liquid by using a dehydrating agent, and finally carrying out post-treatment purification to obtain a 1, 3, 6-hexanetricarbonitrile product. In the step S2, the solid alkali is at least one of a hydrotalcite catalyst, HND-63 and HND-64. According to the preparation method disclosed by the invention, the 1, 3, 6-hexanetricarbonitrile product with high purity, low chroma and high yield can be obtained, and the product is more stable after being placed for a long time and is more suitable for industrial application.

The present invention relates to a semi-nitrile evaporator, and relates to the field of falling film evaporators, the semi-nitrile evaporator comprises a shell, a liquid baffle plate assembly, a feeding check ring, a stirring scraper assembly, a sliding bearing and the like, the shell comprises a top shell, at least one straight cylinder section and a lower conical shell which are sequentially connected, and the top shell is provided with a discharge port and a heavy component feed port at an interval up and down; the lower conical shell is provided with an ammonia inlet, and the liquid baffle assembly is installed in the top shell and located between the discharging port and the heavy component feeding port. The device has the beneficial effects that a semi-nitrile material enters the shell from the heavy component feeding hole, ammonia gas is introduced into the shell from the ammonia gas inlet, the ammonia gas is in full contact with the semi-nitrile material, finally, the ammonia gas carries generated gaseous adiponitrile to move upwards, liquid-phase substances carried in the gaseous adiponitrile are condensed on the liquid baffle plate assembly, and the liquid-phase substances are condensed on the liquid baffle plate assembly; the gas-phase adiponitrile is purer when being discharged from the discharge port, and the whole equipment runs under positive pressure.

The invention provides an electrochemical method for pairwise synthesizing syringic acid and adiponitrile. The method comprises the following steps: 1) mixing syringaldehyde, an alkaline electrolyte, an alcohol solvent, an alkyl glycoside surfactant and water, and adding the mixture into an anode chamber of an electrolytic cell; (2) acrylonitrile, phosphate, borate, a quaternary ammonium base surfactant and water are mixed and added into a cathode chamber of the electrolytic cell; and 3) heating the electrolyte in the cathode chamber and the anode chamber of the electrolytic cell, then carrying out an electrolytic reaction, carrying out electrochemical oxidation on syringaldehyde at the anode to synthesize syringic acid, enabling hydrated hydrogen ions to enter the cathode chamber across a membrane, and synthesizing adiponitrile with acrylonitrile at the cathode. The syringic acid synthesis method is clean, environmentally friendly and low in cost, meanwhile, the problem of anode corrosion in the operation process of electrosynthesis of adiponitrile is solved, and the tail gas safety risk caused by oxygen evolution of an anode for synthesis of adiponitrile is eliminated. The method has the advantages of simple steps, high total product yield, low equipment investment, low operation risk, mild reaction conditions, less three wastes and low energy consumption, and is suitable for wide industrial application.