166 results about "Raney nickel" patented technology

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.

This water electrolysis electrode comprises a substrate and a catalyst portion. The catalyst portion includes Raney nickel particles and metal particles that contain nickel as a main component. The metal particles are in contact with the Raney nickel particles and include aluminum. The ratio of the total number of moles of aluminum to the total number of moles of nickel in the Raney nickel particles is greater than the ratio of the total number of moles of aluminum to the total number of moles of nickel in the metal particles.

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 provides a spraying-free Raney nickel electrode preparation method, a Raney nickel electrode and hydrolysis hydrogen production equipment, and relates to the field of Raney nickel electrodes. The preparation method comprises the following steps: mixing raw materials including aluminum powder, a dispersing agent, a binder and water to obtain raney nickel electrode slurry; coating the Raney nickel electrode slurry on a nickel net and drying to obtain a pretreated electrode; calcining the pretreated electrode net under inert gas protection or a vacuum condition to obtain an unactivated nickel-aluminum alloy net; and activating the unactivated nickel-aluminum alloy net to obtain the Raney nickel electrode. According to the preparation method provided by the invention, the precursor of the Raney nickel electrode is prepared in a slurry brushing manner, so that the consumption of powder is greatly reduced, and waste is reduced. A nickel-aluminum alloy phase is grown on the nickel net in situ in a powder metallurgy mode, and the nickel-aluminum alloy has very excellent binding force.

The present invention relates to the technical field of benzoxazine resins, and discloses a halogen-free copper-clad laminate substrate material containing flame-retardant modified benzoxazine resin and a preparation method thereof, wherein the present invention utilizes 1,2,4,5-benzenetetramine and phosphorus oxychloride to carry out chlorination reaction to obtain intermediate product 1, and then it is subjected to substitution reaction with p-hydroxybenzaldehyde to obtain intermediate product 2, and the aldehyde group contained therein is subjected to Schiff base reaction with 3-aminophenoxyphthalonitrile to obtain intermediate product 3, and under the catalytic reduction of Raney nickel, phosphorus-containing polyamine is obtained, and finally it is subjected to Manniene reaction with bisphenol A and polyformaldehyde to obtain a flame-retardant modified hyperbranched benzoxazine resin, and finally it is stirred and mixed evenly with E-51 epoxy resin, N, N-dimethylbenzylamine, etc., and coated on glass fiber cloth, and cured to obtain a halogen-free copper-clad laminate substrate material containing flame-retardant modified benzoxazine resin. The halogen-free copper-clad laminate substrate material prepared by the present invention has good flame retardancy, thermal stability and mechanical properties.

The invention belongs to the field of electrode materials, and particularly relates to an alkaline hydrogen production electrode and a preparation method thereof.The alkaline hydrogen production electrode comprises an electrode substrate and a catalyst loaded on the electrode substrate; the catalyst comprises the following components: Ni, Fe, Mo, Cr and Mn, the molar percentage of Mo is 5-15%, and the total molar percentage of Fe and Mo is 35%. By alloying, introducing Mo and controlling the content of Fe and Mo, the catalytic activity is enhanced, compared with existing binary Raney nickel, the catalytic activity is higher, the HER reaction overpotential can be effectively reduced, so that the energy consumption of an electrolytic bath is reduced, and the corrosion resistance of an electrode can be enhanced through Cr and Mn.

The invention relates to the technical field of surfaces, in particular to an efficient water electrolysis hydrogen production catalyst material, a coating, a preparation method and application of the efficient water electrolysis hydrogen production catalyst material, the coating, the preparation method and the application of the efficient water electrolysis hydrogen production catalyst material. The invention further provides a preparation method of the Ni, Cu, Mo, Cr, polybenzoate and boron nitride composite powder and a method for preparing a high-efficiency catalyst coating from the composite powder. Compared with traditional Raney nickel, the high-efficiency catalyst coating prepared by the method has the advantages that the current density is greatly improved, and the high-efficiency catalyst coating does not contain precious metal, is controllable in cost, and is relatively good in durability.

The invention relates to the technical field of catalysts, and discloses a preparation method of a Raney nickel catalyst for hydrogenation of 2-methyl glutaronitrile, which comprises the following steps: (1) crushing a raw material alloy NiAlX into powder; x is one or more of Mo, Fe and Cr; (2) the alloy powder is added into alkali liquor, ultrasonic treatment is conducted while stirring is conducted, then heating leaching and filtering are conducted, and a solid is obtained; and (3) adding the solid into a titanium source-containing aqueous solution for soaking treatment, and filtering to obtain the Raney nickel catalyst. The Raney nickel doped with the metal element X is used as the carrier, the titanium-source-containing aqueous solution is introduced for load modification, a large number of active sites are uniformly distributed on the surface of the obtained Raney nickel catalyst, the Raney nickel catalyst is used for hydrogenation reaction of 2-methylglutaronitrile, the target product 2-methylpentamethylene diamine with a high yield can be obtained, and in addition, the catalyst has a good application prospect in the field of hydrogenation of 2-methylglutaronitrile. The catalyst can still maintain high catalytic activity after being repeatedly used.

The invention relates to an activation method of a Raney nickel electrode and the Raney nickel electrode. The activation method comprises the steps of electrode preparation, high-temperature hot alkali treatment, electrochemical anode activation and cleaning and post-treatment. Wherein in the high-temperature hot alkali treatment, a nickel-aluminum alloy sheet is placed in a sodium hydroxide solution with specific concentration and temperature to dissolve surface aluminum to form a primary porous structure; electrochemical anode activation is carried out by taking the treated electrode as an anode and an inert material electrode as a cathode, and deep aluminum is further removed under specific potential and time; and finally cleaning and drying to obtain the activated electrode. Compared with the prior art, the method utilizes the synergistic effect of high-temperature hot alkali and electrochemistry, overcomes the problem that deep aluminum is not dissolved thoroughly in traditional hot alkali treatment, can greatly shorten the activation time, reduce aluminum residues and protect the electrode structure, has the advantages of simplicity in operation, environmental protection, high efficiency and the like, improves the catalytic performance and stability of the Raney nickel electrode, and is suitable for industrial production. The method is suitable for industrial production application.

The invention discloses a Raney nickel electrode for producing hydrogen by electrolyzing water and a preparation method of the Raney nickel electrode. The preparation method comprises the steps of electro-deposition of a porous nickel substrate, electro-deposition of a nickel-zinc alloy on the porous nickel substrate, chemical dezincification activation of the nickel-zinc alloy, electro-curing of the activated Raney nickel electrode and the like. Through a technical route of combining electro-deposition and activation curing treatment, on the basis of ensuring high catalytic activity and high specific surface area, controllable design of a microstructure is realized, and the mechanical strength and stability of the electrode are remarkably improved. The Raney nickel electrode prepared by the invention is suitable for a water electrolysis hydrogen production process, and especially shows excellent durability and electro-catalytic performance under complex industrial conditions such as large current, high temperature and high voltage.

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 invention relates to the technical field of sugar alcohol preparation, and discloses a preparation method of high-purity crystalline maltitol, which comprises the following steps: firstly, by taking corn starch milk as a raw material, preparing ultrahigh-content maltose syrup with the maltose content of more than or equal to 91%, the wheat triose content of less than or equal to 0.4% and the glucose content of less than or equal to 4% through an enzyme conversion method; carrying out hydrogenation reaction on the syrup by adopting a Raney nickel catalyst, and controlling the hydrogenation side reaction to be 2% or below, so as to obtain hydrogenated liquid with maltitol content of more than or equal to 88%; and then, a pigment separation procedure in a traditional process is omitted, and the hydrogenated liquid is directly subjected to decoloration, ion exchange, evaporation concentration, crystallization, centrifugation and drying treatment to finally prepare crystalline maltitol. According to the method, by screening a specific compound enzyme system and finely regulating the pH value and temperature control environment of a saccharification reaction system, the generation of maltose is effectively promoted, and side reactions such as excessive hydrolysis of glucose and reverse synthesis of trisaccharide are inhibited at the same time, so that the high-purity maltose syrup precursor is obtained.

The present invention provides a method for continuous catalytic amination of tetramethylpiperidone, which comprises the following steps: continuously introducing a liquid raw material containing triacetoneamine, an amine compound and a catalyst into a microchannel reactor, and introducing hydrogen into the reactor to carry out a continuous catalytic amination reaction to obtain a tetramethylpiperidineamine compound; wherein the catalyst is an acidic activated carbon loaded with a transition metal element. The present invention effectively solves the problems in the prior art, such as short catalyst life, high cost and a large amount of wastewater, when preparing tetramethylpiperidineamine compounds by using catalysts such as Raney nickel and palladium on carbon.

The invention relates to a process for the manufacturing of biobased 3-methyl-delta-valerolactone (3MdVL) and 3-methyl-1,5-pentanediol (3MPD) via one- pot hydrogenation of anhydromevalonolactone (aMVL) in the presence of a Raney- Nickel catalyst. The hydrogenation occurs without solvent at a temperature from 120ºC-180ºC, preferably at 130ºC-170ºC and a pressure between 15-30 bar, preferably at a pressure between 18 and 22 bar. The hydrogenation time may vary between 3 and 25 hours, preferably between 6 and 24 hours.

The invention relates to a carbobenzoxy deprotection reaction method and application, and belongs to the technical field of catalytic chemistry. The method comprises the following steps: dissolving a raw material Cbz epoxy in ethanol, carrying out high-temperature reflux stirring treatment, transferring the obtained product into a reaction kettle, adding Raney nickel, charging and discharging nitrogen to discharge air in the kettle, charging and discharging hydrogen again, keeping the final pressure of the hydrogen in the reaction kettle at 1-2 MPa, after the room-temperature reaction is finished, filtering the Raney nickel to obtain a reaction liquid, dripping the reaction liquid to crystallize, and carrying out suction filtration and drying to obtain the product. The filtered Raney nickel is recycled and reused for at least 10 times after being treated at a high temperature, and new Raney nickel is replaced, so that the triangular balance of'catalytic performance-economic cost-process stability 'is realized, the production cost is reduced on the premise of not influencing the reaction effect, the used Raney nickel is recycled and reused after being properly treated, and the production cost is reduced. And the production cost is further reduced, and good economic benefits are achieved.

The present invention discloses a method for preparing 5-methyltetrahydrofurfuryl alcohol. The method uses 5-hydroxymethylfurfural (HMF) as a raw material and one or more of palladium on carbon, Raney nickel, and sulfonated silica as a catalyst. HMF, a reaction solvent, and the catalyst are added to a reactor. Amberlyst 15 strong acid resin is added as a second catalyst to provide an acidic environment. The reactor is stirred and reacted in a hydrogen atmosphere to produce 5-methyltetrahydrofurfuryl alcohol. The present invention provides a method for preparing 5-methyltetrahydrofurfuryl alcohol that is simple, easy to separate, high in purity, and high in yield. The addition of Amberlyst 15, a second catalyst, to the reaction provides an acidic environment without affecting the activity of the Raney nickel, thereby facilitating the cleavage of the carbon-oxygen bond to produce the target product, 5-methyltetrahydrofurfuryl alcohol (MTHFM). The synergistic effect of Amberlyst 15 and the Raney nickel catalyst greatly enhances the activity of the catalytic reaction.

The invention relates to the technical field of catalyst treatment, in particular to a Raney nickel catalyst reduction and passivation treatment system and a passivation method.The system comprises a deactivation pool, a hydrogenation reactor and a circulation pipeline which are connected in a closed loop mode; a sodium nitrate solution supply end, a temperature adjusting system and a multi-dimensional sensing assembly (a concentration sensor, a temperature sensor, a pH sensor, a pressure sensor, a flow sensor and the like) are arranged, and the core is a processing unit integrating a control module and a dynamic soft measurement model. The desalted water injection amount, the sodium nitrate solution concentration and the deactivation solution temperature are preset and dynamically optimized through the treatment unit, closed-loop circulation of a reaction system is achieved through a circulation pipeline, and the passivation process is judged based on the pH value change. According to the method, the passivation rate and the completion time are predicted by means of the dynamic soft measurement model, the optimal process parameters are output in a self-adaptive mode, and the problems that a traditional passivation method depends on artificial experience, and is low in safety and insufficient in efficiency are solved by combining a safety interlocking mechanism and a uniform mixing regulation and control strategy.

The present invention relates to a method for recycling waste lithium iron phosphate positive electrode powder for preparing a high-performance water electrolysis anode catalyst and extracting lithium elements, comprising the following steps: disassembling waste lithium iron phosphate batteries, peeling the positive electrode sheet from the current collector and grinding it; and coating the surface of the obtained lithium iron phosphate powder with a modified nickel compound. The obtained material is immersed in an oxidizing solution to leach the remaining lithium in the material, and the delithiated composite catalyst powder is collected. The lithium ion-containing soaking solution is further recrystallized to precipitate into lithium salts, thereby achieving lithium extraction. Compared with the prior art, the present invention achieves efficient lithium iron phosphate recovery and reuse, and the obtained composite structure catalyst has a significantly improved effect on the oxygen evolution reaction in water electrolysis than waste lithium iron phosphate powder, and its performance is superior to that of commercial Raney nickel electrocatalysts. In addition, compared with directly extracting lithium from waste lithium iron phosphate powder and then coating it with nickel compound, the composite structure catalyst of the present invention has better catalytic performance for the oxygen evolution reaction.

This invention provides a method for manufacturing electrode materials that have excellent water electrolysis performance in water electrolysis devices. [Solution] A method for manufacturing an electrode material used in the electrodes of a water electrolysis device includes a step of obtaining Raney nickel contained in the electrode material, and the step of obtaining Raney nickel includes an alkali treatment step of dissolving aluminum from the NiAl alloy with an alkaline substance. The component composition of the NiAl alloy, excluding unavoidable impurities, is the composition formula Al3Ni (2-x) Co x (x is 0

The application provides a high-porosity Raney nickel electrode and a preparation method thereof, and relates to the technical field of Raney nickel electrodes and preparation thereof. The preparation method of the high-porosity Raney nickel electrode effectively controls the dealuminization rate and the pore uniformity through a preparation process of'sintering treatment + special electrochemical dealloying treatment', and stably prepares the high-porosity Raney nickel electrode. A new process for preparing the high-porosity Raney nickel electrode in an environmentally friendly manner is provided, which replaces the traditional corrosion pore-forming process of a strong alkaline chemical solution and reduces pollution. The prepared high-porosity Raney nickel electrode has a high porosity of up to 52%, and the pore structure is stable, so that the catalytic activity and mechanical stability of the electrode are effectively improved.

This application discloses a method for preparing sodium dihydrobis(2-methoxyethoxy)aluminate, belonging to the field of organic synthesis technology. The method uses aluminum powder, ethylene glycol monomethyl ether, and metallic sodium as main raw materials, and carries out a hydrogenation reaction under the action of a Raney nickel catalyst to generate the target product, sodium dihydrobis(2-methoxyethoxy)aluminate. The sodium dihydrobis(2-methoxyethoxy)aluminate prepared by this process uses inexpensive and readily available raw materials, is simple to operate, and has a yield of over 98.5%. It boasts high yield, low cost, and a short process route, reducing production costs compared to existing technologies and making it suitable for industrial production.

This invention provides a method for manufacturing electrode materials that have excellent water electrolysis performance in water electrolysis devices. [Solution] A method for manufacturing an electrode material used in the electrodes of a water electrolysis device includes a step of obtaining Raney nickel contained in the electrode material, and the step of obtaining Raney nickel includes an alkali treatment step of dissolving aluminum from the NiAl alloy with an alkaline substance. The component composition of the NiAl alloy, excluding unavoidable impurities, is the composition formula Al3Ni (2-x) Cu x (x is 0)

The invention relates to the technical field of catalytic synthesis, and discloses a preparation method of 2-methyl pentamethylene diamine, which comprises the following steps: placing 2-methyl pentamethylene dinitrile, a solvent and a Raney nickel catalyst in a high-pressure kettle, firstly introducing ammonia gas at room temperature, then introducing hydrogen, and starting heating and stirring for hydrogenation reaction to obtain 2-methyl pentamethylene diamine; wherein the Raney nickel catalyst is doped with Cr and Ti and comprises the following metal components in percentage by mass: 1-6% of Cr, 0.1-5% of Ti and the balance of Ni and Al. According to the present invention, the hydrogenation reaction is performed by using the mixed gas of the hydrogen gas and the ammonia gas so as to avoid the generation of a large amount of wastewater in the subsequent treatment, and the Cr and Ti doped Raney nickel catalyst is used to effectively improve the conversion rate of the 2-methyl glutaronitrile and the selectivity of the 2-methyl pentamethylene diamine.

The invention discloses a preparation method of 2-pyrrolidone, and belongs to the technical field of fine chemical engineering and catalysis. According to the method, maleimide is taken as a raw material, and 2-pyrrolidone is prepared by hydrogenation reaction under mild conditions in a 1, 4-dioxane solvent by utilizing the synergistic effect of a main catalyst Raney nickel and a cocatalyst rare earth Lewis compound; the mass ratio of 1, 4-dioxane to maleimide is (10: 1)-(2: 1), the mass ratio of maleimide to a Raney nickel catalyst is (1000: 1)-(100: 1), the molar ratio of maleimide to a rare earth Lewis compound is 1: 1, the hydrogen pressure is 2-4MPa, the reaction temperature is 140-180 DEG C, reacting for 16-24 hours, filtering and recovering Raney nickel after the reaction, and carrying out reduced pressure distillation to separate a solvent and a product, and the rare earth compound is recycled after being purified. According to the method, selective hydrogenation is achieved through the synergistic effect of the composite catalyst, the product yield reaches 95.3%-99.5%, the purity is larger than or equal to 99.2%, compared with a traditional method, the condition is mild, use of precious metal catalysts is avoided, the catalyst and the solvent can be recycled, and the production cost and pollution are reduced.

The invention belongs to the field of fluorine-containing pesticide synthesis, and particularly relates to synthesis of fluopyram. The fluopyram is innovatively synthesized by adopting a one-pot catalytic system, and the reaction process is as shown in the formula 1: 2-acetonitrile-3-chloro-5-trifluoromethylpyridine (1) and o-trifluoromethyl benzoyl chloride (2) are used as initial raw materials, a catalyst with a specific structure and an alkali-binding acid agent are added into an ionic liquid, and a reaction is performed at the temperature of 60-80 DEG C for 1-2 hours to obtain the fluopyram. And preparing the target product fluopyram (3) by a high-efficiency one-pot method under the catalytic action of a supported metal catalyst in a hydrogen atmosphere. According to the one-pot synthesis process of fluopyram, the reaction is clean and pollution-free, the operation is simple and convenient, the utilization rate of raw materials is high, and the application frequency of Raney nickel can be increased under the condition that the yield is not influenced through a reaction system formed by combining water and an organic solvent. The o-trifluoromethyl benzoic acid recovered from the water phase can be further converted into o-trifluoromethyl benzoyl chloride, so that the utilization rate of the raw materials is improved. The synthesis process route is effectively shortened, and meanwhile, the use of expensive protection groups for protection in the hydrogenation reduction process is avoided, so that the process is more simplified.

The utility model relates to the technical field of Raney nickel catalyst separating and charging, in particular to a Raney nickel catalyst separating and charging device which comprises a crane, an electric hoist, a separating device, a frame platform and a BDO reactor, the separating device and the electric hoist are fixedly installed on the top of the frame platform, and the electric hoist is arranged on the right side of the separating device. The crane is arranged on the ground on the right side of the frame platform, an outlet in the left end of the separating device is fixedly communicated with a discharging pipeline which is inclined in a right-high left-low shape, and an outlet of the discharging pipeline is formed above an inlet in the top of the BDO reactor. The device is reasonable and compact in structure and convenient to use, can improve the separation and charging efficiency of the Raney nickel catalyst, further improves the production efficiency of a BDO reactor, reduces the working intensity of workers, and has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

The application discloses a method for synthesizing benoxacor, and belongs to the technical field of chemical organic synthesis. The method comprises the following steps: taking DMF as a solvent, fully reacting ortho-nitrophenol with monochloroacetone and alkali at a certain temperature, centrifuging after the reaction is completed, obtaining a first filter cake and a DMF solution of 2-nitro-2-phenoxypropanone, removing part of the DMF through vacuum distillation, detecting the content of chloroacetone in the gas chromatograph, and adjusting the mass concentration of the 2-nitro-2-phenoxypropanone DMF solution to 10-20% after the content of chloroacetone is detected to be lower than 0.02% by using the area normalization method; then, adding Raney nickel into the 2-nitro-2-phenoxypropanone DMF solution, and performing hydrogenation reaction by passing hydrogen; after the reaction is completed, the upper clear liquid is extracted, and 3,4-dihydro-3-methyl-2H-1,4-benzoxazine DMF solution is obtained through filtration; then, an acid-binding agent alkali is added, and acylation reaction is performed by dropwise adding dichloroacetyl chloride, so as to synthesize benoxacor. The method can greatly simplify the operation process of frequently changing solvents in the process of synthesizing benoxacor, and can avoid the generation of a large amount of waste brine.

The present invention provides a Raney nickel and a passivation treatment method and application thereof. The passivation treatment method comprises: transferring the sealed Raney nickel to a drying oven equipped with an air pump for drying treatment, and controlling the air flow rate in the drying oven to 100 mL / min to 5000 mL / min to purge the Raney nickel during the drying treatment; and continuously drying until the Raney nickel is converted into powder to obtain a passivated Raney nickel catalyst. The membrane electrode prepared from the Raney nickel obtained by the passivation treatment of the present invention has high activity in the electrohydrolysis reaction. The passivation treatment method of the present invention increases the specific surface area of ​​the Raney nickel catalyst by controlling the drying temperature in the passivation treatment and the air flow rate in the purge process, thereby overcoming the problems of spontaneous combustion of traditional Raney nickel when it comes into contact with air during transportation and production.

The invention discloses vanillin alcohol ether and a preparation method thereof, and the preparation method comprises the following steps: (1) by taking vanillin or ethyl vanillin and hydrogen as reactants and alcohol or ethyl acetate (EA) as a solvent, preparing a reactant solution, adding a Raney nickel catalyst as a catalyst, and reacting at the temperature of 40-70 DEG C under the reaction hydrogen pressure of 2-3 MPa for 8-10 hours; and (2) by taking vanillin alcohol or ethyl vanillin alcohol and second alcohol as reactants and lewis acid (such as magnesium chloride, aluminum chloride, calcium chloride, ferric chloride, copper sulfate and other lewis acids) as a catalyst, reacting at 80-100 DEG C to obtain vanillin alcohol ethers, the preparation method disclosed by the invention is mild in reaction condition, few in by-products, green and environment-friendly, high in product yield and suitable for industrial production.

The utility model discloses a solid catalyst feeding device which comprises a reaction kettle, a jet orifice of the jet pump is connected with an inlet of the reaction kettle through a pipeline; the catalyst feeding bin and the liquid raw material bin are respectively connected with an inlet of the injection pump through a pipeline and a valve pipeline; the first nitrogen supply equipment is connected with the catalyst feeding bin through a pipeline; and the first industrial water supply equipment is connected with the catalyst feeding bin through a pipeline. The stirring paddle is arranged in the Raney nickel feeding bin, so that unsmooth feeding caused by long-time Raney nickel deposition is prevented. By arranging the nitrogen seal, after feeding is finished, replacement is conducted through nitrogen, and the accident risk caused by air residues in the system is avoided.