228 results about "Reaction energy" patented technology

The invention belongs to the technical field of electrocatalysts, and discloses a method for preparing a heterogeneous monomolecular electrocatalyst by using water-soluble metalloporphyrin / phthalocyanine and a carbon carrier and application of the heterogeneous monomolecular electrocatalyst. The method comprises the following steps: 1) dissolving water-soluble metalloporphyrin / phthalocyanine in water to obtain a water-soluble metalloporphyrin / phthalocyanine solution; 2) soaking the electrode coated with the nanoscale carbon material in a water-soluble metalloporphyrin / phthalocyanine solution; or uniformly mixing the carbon nanomaterial organic solvent dispersion liquid with a water-soluble metalloporphyrin / phthalocyanine solution to obtain a composite catalyst; and dispersing the composite catalyst in an organic solvent, uniformly mixing with a binder solution, coating an electrode with the mixture, and drying to obtain the heterogeneous monomolecular electrocatalyst. The method disclosed by the invention is simple, catalyst molecules can be completely dispersed and adsorbed on a nanoscale carbon material in a single molecule form, and active sites are improved; the prepared monomolecular electrocatalyst is used for electrocatalysis of carbon dioxide reduction reaction, and high product selectivity and stability of carbon dioxide reduction can be realized.

The invention discloses a method for preparing 1, 3-propylene glycol by hydrating and hydrogenating acrolein, which comprises the following steps: carrying out hydration reaction by taking an acrolein aqueous solution as a raw material and taking acylated and aminated modified polystyrene resin as a catalyst; carrying out flash evaporation or gas stripping on the product after the reaction to remove acrolein, condensing and recovering the removed acrolein, and carrying out hydrogenation reaction on the acrolein-removed mixed solution serving as a hydrogenation raw material on a metal catalyst; and after the reaction is finished, performing flash evaporation on the product to remove water and light components, and performing vacuum rectification to obtain a high-purity 1, 3-propylene glycol product. According to the method, the modified resin is used for catalyzing the acrolein hydration reaction, the overall yield of the 1, 3-propylene glycol can be increased, the catalyst modification process is simple, the cost is low, the additional value of the final product is high, and the method is suitable for industrial production.

The invention belongs to the field of catalyst preparation, and particularly relates to a binder for catalyst forming and a preparation method and application thereof. The binder for forming the catalyst, provided by the invention, is prepared from the following raw materials in parts by weight: 0.5 to 2 parts of magnesium chloride, 1 to 2 parts of magnesium oxide, 0.5 to 2 parts of sodium carboxymethyl cellulose, 1 to 3 parts of ethylenediamine tetraacetic acid, 2 to 6 parts of nano-hydroxyapatite modified polyester, 1 to 3 parts of organic solvent and 10 to 35 parts of water. When the binder provided by the invention is applied to catalyst forming, on one hand, the problems that a conventional catalyst is poor in binding performance, and acid gas corrodes equipment and pollutes the environment in the roasting process can be solved; on the other hand, the surface acidity of the catalyst carrier can be reduced, a suitable reaction environment can be provided for some reactions needing to be carried out in an alkaline environment or reactions with acidic reactants and intermediates, and the selectivity and conversion rate of the reactions are improved.

The invention provides a composite hydrogen transfer catalyst based on an MOFs material as well as a preparation method and application of the composite hydrogen transfer catalyst. The composite hydrogen transfer catalyst comprises the MOFs material loaded with an active metal component and solid alkali, the active metal component is selected from at least one of palladium, platinum, ruthenium, rhodium and nickel; the active metal component accounts for 0.5-5% of the mass of the catalyst; the MOFs material is selected from at least one of ZIF-8, MIL-101, UiO-66, HKUST-1 and MOF-5 (Metal Organic Frameworks); the solid alkali is selected from at least one of magnesium oxide, calcium oxide, hydroxyapatite and barium oxide. The catalyst provided by the invention has the advantages of high catalytic activity, good selectivity, strong stability, reusability and the like, can efficiently catalyze fatty alcohol to perform hydrogen transfer reaction under a lower-temperature reaction condition to prepare Guerbet alcohol, remarkably improves the yield and purity of a product, and reduces the reaction energy consumption and cost.

The invention discloses an electric methane preparation catalyst compounded by Ni nanoclusters and ZrO2 with lattice embedded with Ru single atoms as well as a preparation method and application of the electric methane preparation catalyst. The electric methane preparation catalyst comprises a NiNCRuSA / ZrO2 bimetallic active site catalyst compounded by the Ni nanoclusters and the ZrO2 with the lattice embedded with the Ru single atoms. The electric methane preparation catalyst comprises a NiNCRuSA / ZrO2 bimetallic active site catalyst, the NiNCRuSA / ZrO2 bimetallic active site catalyst is of a ZrO2 composite structure formed by embedding Ru monatomic into Ni nanoclusters and crystal lattices, the Ni nanoclusters and the Ru monatomic are adjacently distributed on a ZrO carrier to form a synergistic catalysis structure, rich and efficient active sites are provided for catalytic reaction, and reactant adsorption and conversion are facilitated; in the subsequent CO2 methanation reaction, the Ni element quickly dissociates H2 and provides sufficient H *, Ru replaces ZrO2 to serve as an active site for CO2 adsorption and conversion, conversion of an intermediate of CO2 can be accelerated, the reaction activity is greatly enhanced through cooperation of the Ni element and the Ru, the reaction energy barrier is reduced, and the overall catalytic efficiency is improved.

The present application provides a kind of waste oil transesterification reaction catalytic system, belong to biomass refining field.The preparation steps of catalyst include: in the solution containing Ni (NO3) 2 And Fe (NO3) 3 Carboxymethyl cellulose is added, then urea is added, reaction is carried out, and nano-porous NiFe2O4 is obtained, MgCl2 / ZnCl2 Solution and KOH / K2CO3 Solution are added to NiFe2O4 water dispersion, reaction is carried out, solid product is collected, calcination is carried out, and catalyst is obtained.Catalyst is added to waste oil to carry out catalytic reaction.The present application adopts carboxymethyl cellulose to regulate the crystal form, grain size and dispersity of catalyst carrier, and the obtained solid magnetic catalyst can improve the production efficiency of waste oil for preparing biodiesel.The catalyst has high active site, fast reaction rate, mild reaction condition, can reduce reaction energy consumption and production cost.The catalyst also has good magnetic property, is convenient for recovery.The catalyst has good stability, improves the controllability and stability of reaction.

The present application relates to the technical field of alcohol aldehyde condensation reaction, and discloses an alcohol aldehyde condensation reaction method.The alcohol aldehyde condensation reaction method is carried out in an alcohol aldehyde condensation reaction device, the alcohol aldehyde condensation reaction device comprises a micro-channel alcohol aldehyde condensation reactor and an alcohol aldehyde condensation tube reactor which are connected in series; in the presence of an alkali catalyst, a reaction raw material n-butyl aldehyde is subjected to a first alcohol aldehyde condensation reaction in the micro-channel alcohol aldehyde condensation reactor to obtain a first alcohol aldehyde condensation reaction product; and the first alcohol aldehyde condensation reaction product is subjected to a second alcohol aldehyde condensation reaction in the alcohol aldehyde condensation tube reactor.The method uses a micro-channel alcohol aldehyde condensation reactor and an alcohol aldehyde condensation tube reactor to replace a full-mixing kettle reactor in the prior art to carry out alcohol aldehyde condensation reaction, so that the yield of a by-product heavy carbon alcohol can be significantly reduced, and the yield of a target product can be improved.

The utility model relates to the technical field of innocent treatment equipment, in particular to innocent treatment equipment with a carrying basket, which comprises a container, the carrying basket and a water flow driving module, the carrying basket is positioned in the container, the periphery of the carrying basket is closed, a plurality of lower meshes are formed in the bottom of the carrying basket, and a plurality of upper meshes are formed in the top of the carrying basket; the water flow driving module is used for driving fluid in the container to rush into the object carrying basket from bottom to top through the lower mesh holes and flow out through the upper mesh holes. During use, a hydrated object (such as animal remains / plants) needing to be hydrated is placed in the carrying basket, the periphery of the novel carrying basket is closed, and only top and bottom meshes are reserved, so that fluid always rushes into the carrying basket from the lower meshes in the bottom of the carrying basket under the action of the water flow driving module, the fluid is more fully contacted with the hydrated object, and the hydrated object can be fully hydrated. And even hydrated substances float, rotate and roll and accelerate chemical reaction, so that pet remains can be decomposed more sufficiently, and bones of pets or wafers on pet bodies can be kept as a commemorative of a feeder.

The invention belongs to the field of new energy material synthesis and electro-catalysis, and particularly relates to a chiral molecule coupling layered hydroxide catalyst and a preparation method and application thereof. The invention innovatively provides a synergistic strategy fusing chiral molecular engineering and a bionic design principle to improve the oxygen evolution performance of the nickel-iron layered hydroxide, a one-step hydrothermal method is adopted for preparation, controllable anchoring of chiral molecules between layers of the nickel-iron layered hydroxide is realized, and the performance of the nickel-iron layered hydroxide is improved. Chiral molecules with a proton acceptor function are introduced into a NiFe-LDH interlayer; due to the steric hindrance and coordination characteristics of chiral molecules, regular growth of NiFe-LDH laminates can be disrupted, and more lattice defects, edge sites and unsaturated coordination metal centers are induced to be generated. The coordination effect of chiral molecules and metal centers (Ni and Fe) can adjust the electronic state and valence state of metal, so that the reaction energy barrier is reduced, and the reaction kinetics is accelerated.

The invention discloses a method for catalyzing hydrolysis of hexafluorophosphate radicals by using a bifunctional solid acid material, the main active sites of the bifunctional solid acid material in the method are a Brnsted acid site formed by combining protonated sulfate radicals (HSO4 <->) with hydroxyl groups on the surface of TiO2 and a Ti < 4 + > (Lewis acid) site enhanced by induction of the Brnsted acid site, and in the catalytic hydrolysis process, the Brnsted acid site and the Ti4 < + > (Lewis acid) site can be used for catalyzing hydrolysis of the hexafluorophosphate radicals by using the bifunctional solid acid material. Ti4 < + > (Lewis acid site) generates strong adsorption and activation effects on PF6 <->, adjacent HSO4 <-> (Brnsted acid site) and PF6 <-> generate H.. F-P interaction, and the two sites apply a synergistic stretching effect on a P-F bond from different directions, so that a stable regular octahedron structure of PF6 <-> is greatly damaged, a reaction energy barrier of P-F bond breakage is remarkably reduced, efficient hydrolysis of PF6 <-> is realized, and the reaction time is shortened. The method has the advantages that the hydrolysis efficiency is high, the hydrothermal stability is good, extreme acid and alkali environments are not needed, the bifunctional catalyst is easy to regenerate and the like, and a brand new technical path and a solution are provided for harmless treatment of the hexafluorophosphoric acid-containing wastewater.

A kind of zirconium alloy water environment corrosion microscopic mechanism analysis method based on ab initio molecular dynamics, 1, construct the multi-phase interface model of metal substrate model and corrosion medium layer model combination, obtain the size information of simulation box;2, set simulation parameters for multi-phase interface model;3, carry out geometry structure optimization to multi-phase interface model and eliminate local internal stress, then carry out ab initio molecular dynamics simulation, obtain atomic evolution track and corrosion product structure;4, carry out data post-processing and statistical analysis to ab initio molecular dynamics simulation result, obtain corrosion elementary reaction path and calculate reaction energy barrier, the interaction mechanism of corrosion group and surface is analyzed by DFT method.The method can complete accurate zirconium alloy corrosion process dynamic simulation under periodic boundary condition, has higher calculation precision and is more reasonable to the description of interatomic force in system, and can also analyze the interaction mechanism between alloy and corrosion medium from atomic electronic scale.

The application relates to a preparation method of a nanoporous NiBi alloy catalyst for nitrogen reduction. The nanoporous NiBi alloy catalyst is obtained by using Al, Ni and Bi metal particles as raw materials and by adopting a method of smelting, belt casting and dealloying. The application has the following advantages: (1) the three-dimensional nanoporous structure of the catalyst can provide abundant active sites for the catalytic reaction and is beneficial to electron transmission in the reaction process; (2) the synergistic effect of the Ni phase and the NiBi phase can effectively reduce the reaction energy barrier of the rate-determining step, inhibit the hydrogen evolution side reaction and improve the catalytic efficiency; and (3) the preparation method is simple and efficient, low in price, safe and environmentally friendly, and has a good application prospect in the field of electrocatalytic nitrogen synthesis ammonia.

The invention discloses a catalyst for strengthening small organic molecule acidic electrooxidation as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing manganese dioxide loaded on a current collector by using manganese metal salt; immersing the current collector loaded with manganese dioxide in a noble metal salt solution; and finally, washing the current collector subjected to dipping treatment, and calcining to obtain the noble metal doped manganese dioxide catalyst loaded on the current collector. According to the invention, the electrocatalyst with double active sites is constructed through a strategy of doping manganese dioxide with noble metal, so that the synergistic catalysis is realized, the dosage of the noble metal is reduced, meanwhile, water and small organic molecule double substrates can be synergistically activated, the reaction energy barrier of a high-speed step is reduced, the current density is improved, and the reaction rate is increased.

This invention relates to the field of flue gas treatment technology, specifically to a sulfur dioxide gas absorbent, comprising the following raw materials by weight: 90-100 parts of an aqueous amine solution and 2-6 parts of additives. In this invention, the nitrogen-zinc ion-sulfur active center of the catalyst acts as a molecular key, efficiently and reversibly coordinating and activating sulfur dioxide molecules, significantly reducing the reaction energy barrier and fundamentally improving the intrinsic absorption rate. The enhancer, with its high specific surface area, provides a large interface for the reaction. Its surface sulfonic acid groups not only buffer the decrease in system pH, maintaining the optimal acid-base environment for the reaction, but also catalyze the conversion of absorption intermediates into more stable products, thereby shifting the reaction equilibrium to the right. Under the combined effect of these two factors, the catalyst accelerates the reaction towards equilibrium, while the enhancer continuously shifts the equilibrium point, resulting in a higher absorption capacity for the absorbent.

The present application provides a kind of catalyst for preparing furfuryl alcohol by furfural hydrogenation, its preparation method and its application in preparing furfuryl alcohol by furfural hydrogenation.The preparation method of the present application comprises the following steps: under stirring condition, water is added to aluminum isopropyl alcohol;After stirring reaction, filtration, washing, drying, then high temperature calcination is obtained to obtain alumina;Alumina is immersed in copper nitrate solution, impregnation is stirred, dried, calcined reduction to obtain catalyst.The catalyst of the present application is Cu-Al catalyst, the preparation method of catalyst is simple, green and environmentally friendly, and the cost is low;The obtained catalyst is applied to the preparation of furfuryl alcohol by furfural hydrogenation, so that the reaction can be carried out at lower reaction temperature and lower reaction pressure, and furfuryl alcohol can be prepared with high conversion rate and high selectivity, the conversion rate of furfural can reach 100%, and the selectivity of furfuryl alcohol can reach 100%.

The application relates to the field of mixed gas purification and discloses application of gaseous alkane in reducing the risk of combustion and explosion in the deoxidation process of oxygen-containing gas, which comprises: mixing the oxygen-containing gas with hydrogen in the presence of stabilizing gas to perform an oxidation reaction; wherein the stabilizing gas is gaseous alkane, and the oxygen-containing gas contains oxygen and optional other flammable gas. The method for deoxidizing the oxygen-containing light hydrocarbon by hydrogen provided by the application reduces the risk of combustion and explosion of the mixed gas by taking gaseous alkane as the stabilizing gas, adopts the hydrogen-catalyzed reaction to promote the reaction of oxygen in the mixed gas with hydrogen to generate water, achieves the purpose of deoxidation of the oxygen-containing gas, the reaction product is clean, the hydrogen-catalyzed reaction can effectively inhibit the occurrence of carbon deposition on the surface of the catalyst and the generation of carbon oxides, and the hydrogen-catalyzed reaction has strong bearing capacity for the fluctuation of the oxygen content of the raw material gas.

The application discloses a preparation method of Al / NH4CuF3 metastable intermolecular complex. The method is characterized in that: firstly, NH4CuF3 with a nano-network structure is prepared through a solvothermal reaction; then, n-Al is filled into the nanopore channels of the NH4CuF3 in a manner of ultrasonic-assisted dispersion, so as to form n-Al / NH4CuF3 MICs with good dispersity. The n-Al / NH4CuF3 MICs prepared by the method can etch a passivation layer and reduce the reaction energy barrier of the aluminum powder and an oxidizing agent, depending on the low-temperature decomposition of the NH4CuF3 to release F and the thermal decomposition of the NH4CuF3 to generate HF. In addition, a large amount of gaseous products are generated by the decomposition of the NH4CuF3, so that the generation of a reaction sintering phenomenon is relieved, and the combustion efficiency of the n-Al is improved.

This invention discloses a method for preparing nitrogen-containing conjugated macrocyclic molecules and their composite catalysts, as well as their applications. The method involves adding small-molecule conjugated amines and conjugated anhydride ligands to a polar solvent to obtain a solution containing the ligands and the polar solvent. The precursor solution is then transferred to a reaction apparatus consisting of a flask and a condenser, where the ligands are fully dissolved by magnetic stirring. A highly conductive support and a metal source are then added to the precursor solution, and the precursor is heated to undergo a solvothermal reaction. Simultaneously, an acid is added as a catalyst to initiate a cyclization reaction. After the reaction, a preliminary product is obtained by filtration and vacuum drying. This preliminary product is then redispersed in a polar solvent and subjected to multiple centrifugal washings to remove unreacted small-molecule conjugated amines and conjugated anhydride ligands. After further filtration and vacuum drying, the nitrogen-containing conjugated macrocyclic molecule composite catalyst is obtained. This invention, through the rational design of nitrogen-containing conjugated macrocyclic molecules composed of small-molecule conjugated amines and conjugated anhydride ligands, and their combination with highly conductive supports and metal sources, significantly enhances the conductivity and interfacial charge transport capacity of catalysts, reduces overpotential and reaction energy barriers during catalytic reactions, and expands their application range in electrocatalytic and photocatalytic reactions. It can be used for oxygen reduction reactions, oxygen evolution reactions, hydrogen evolution reactions, carbon dioxide reduction reactions, nitrogen reduction reactions, nitrate reduction reactions, urea synthesis reactions, and oxidation or reduction reactions of small organic molecules.

This invention discloses an organic liquid energy storage carrier and its application, relating to the field of liquid organic hydrogen carrier technology. The organic liquid energy storage carrier of this invention is any one of p-fluorotoluene, m-fluorotoluene, o-fluorotoluene, and fluoromethylbenzene. The application method of this organic liquid energy storage carrier is as follows: 4Å molecular sieve, Rh catalyst, cesium carbonate, and the organic liquid energy storage carrier are sequentially added to a high-pressure reactor, and the reactor is sealed before hydrogen gas is introduced. Following this, microwave plasma pretreatment is performed, and then hydrogen gas is introduced until the pressure inside the reactor reaches 50 bar, followed by a hydrogenation reaction. After cooling, post-processing is performed to obtain the energy storage carrier. The organic liquid energy storage carrier of this invention not only possesses excellent safety and extremely low toxicity, but its application method also reduces reaction energy consumption and increases yield. Therefore, this invention has broader application prospects.

The invention provides a production method and system of tetracyclododecene. The production method comprises the following steps: feeding a norbornene solution of dicyclopentadiene and gasified norbornene into a spray reactor, and reacting in the spray reactor to obtain a reaction product; the molar ratio of the norbornene to the dicyclopentadiene is (5-9): 1; buffering and depressurizing the reaction product to obtain reaction product liquid; and rectifying the reaction product liquid to respectively obtain norbornene and tetracyclododecene. The invention also provides a production system of tetracyclododecene. According to the production method, the spray reactor is used for reaction, so that the rate of converting the DCPD into the TCD can be remarkably improved, and the conversion rate of the DCPD and the selectivity of the TCD are improved.

A wet modification device for inorganic powder comprises a reaction kettle (2), a stirring device (1), a powder feeding pipe (3), a liquid feeding pipe (4), an exhaust pipe (5), a heating device (6), a control system (7), a filtering device (8), a discharging port (9), a filtrate suction device (10), a filtrate barrel (11), a flash drying device (12) and a vacuumizing device (13). Through the design of the spiral stirring blades, the mixing effect of materials is enhanced, and the modification efficiency and quality are improved; the feeding system and the discharging system are accurately controlled, so that the feeding amount of powder and liquid and the separation and drying effects of modified materials are ensured, and the stability and controllability of the modification process are improved. According to the device, the stirring rotating speed, the feeding flow and the reaction temperature are accurately controlled through the control system, so that the modification reaction can be carried out under the optimal condition, and the modification effect and the product quality are further improved.

This invention belongs to the field of activated carbon regeneration technology, specifically relating to a modified thermal regeneration method for waste activated carbon. This invention enhances the oxidation performance of hydrogen peroxide through complexation with tannic acid and ferric chloride, and promotes the desorption of adsorbates from the surface of waste activated carbon using ultrasound assistance. This deep oxidation desorption removes most soluble pollutants and some blockages. Further deep oxidation desorption of large-molecule organic adsorbates using ozone reduces the harmful fumes that may be generated by traditional pyrolysis. Finally, staged steam activation avoids high-temperature sintering of the activated carbon, and heat is returned to the ozone reactor via a heat exchanger to reduce reaction energy consumption. This modified thermal regeneration method for waste activated carbon uses oxidation combined with thermal regeneration to avoid secondary pollution and reduce reaction energy consumption, resulting in a lower carbon loss rate and improved quality of the regenerated activated carbon.

The utility model discloses a kind of for uranium removal device of cobalt hydrometallurgy, for in the process of cobalt hydrometallurgy, the high salt solution containing metal ion is carried out uranium removal.The device includes solution module, steady flow module and drop liquid module, solution module is used to prepare the reaction solution of preset mass concentration;Steady flow module is communicated with solution module, and steady flow module is used to control the uniformity of reaction solution and the stability of flow;Drop liquid module is communicated with steady flow module, and drop liquid module is used to quantitatively drop reaction solution into the uranium removal solution to carry out uranium removal reaction.The utility model uses modular design to optimize the reaction condition of phosphoric acid precipitation method, by making the reaction solution of concentration uniform quantitatively drop into the uranium removal solution with stable flow and rate to carry out reaction, can preferentially precipitate uranium element, improve uranium removal effect, and can reduce cobalt and other metal and reaction solution to generate coprecipitate, improve cobalt recovery rate, reduce the consumption of reaction solution.

This invention provides a method for preparing nano-sized magnesium hydride, comprising the steps of preparing magnesium nanoparticles by gas-phase condensation, MXene-confined catalytic hydrogenation, and atomic layer deposition to construct a composite coating layer. This invention achieves the preparation of ultrafine magnesium nanoparticles through gas-phase condensation; simultaneously utilizing the three-dimensional wrinkled structure Ti3C2T x MXene not only effectively prevents the migration and aggregation of nanoparticles during cycling through physical confinement, but also lowers the energy barrier of hydrogen adsorption and desorption reactions through in-situ generated highly active catalytic phases (such as TiH2), achieving a dual synergistic effect of confinement and catalysis. A titanium dioxide-amorphous carbon composite coating layer is constructed using atomic layer deposition (ALD) technology, which, in conjunction with the MXene confinement framework, provides a dual stabilization mechanism for nano-magnesium hydride. This invention organically combines gas-phase condensation, MXene-confined hydrogenation, and ALD coating, resulting in a product with an initial dehydrogenation temperature below 100°C and a hydrogen storage capacity retention rate exceeding 95% after 3000 hydrogen adsorption and desorption cycles, demonstrating excellent comprehensive performance.

The invention relates to the technical field of liquid-liquid reaction, is suitable for chemical reaction of gas generated by liquid-liquid reaction, and particularly discloses a liquid-liquid two-phase reaction device which comprises a reaction tube, a feeding tube is mounted at the top of the reaction tube, and a first reactor is arranged in the reaction tube and located below the feeding tube. Continuous reaction discs are arranged in a tube body below the first reactor in the reaction tube in a staggered manner; reaction liquid is continuously introduced into the feeding pipe, so that the reaction liquid overflows out of the first reactor and then enters the continuous reaction disc for step-by-step reaction; a gas outlet is formed in the top of the reaction tube and is used for discharging a gas product generated by reaction; and the bottom is provided with a waste liquid outlet for discharging reacted waste liquid. The number of the feed ports can be adjusted according to liquid types, and the reaction kettle is suitable for reaction of various liquids; the first reactor and the continuous reaction disc are designed in the reaction tube, so that the reaction efficiency and the product purity are improved; a waste liquid outlet is formed in the lower part of the reaction tube, so that the reaction can be continuously carried out and the experiment efficiency is improved.

The application relates to the technical field of sulfide catalytic materials, in particular to a modified high-performance cobalt-based sulfide catalytic material, a preparation method and application thereof, which comprises the following steps: S1. stirring cobalt nitrate hexahydrate and zinc nitrate hexahydrate dissolved in a modified solvent; S2. adding a precursor modifier drop by drop into the mixed solution for stirring, centrifuging and transferring to a drying box to obtain a modified precursor; S3. placing the modified precursor downstream of a tube furnace, placing a modified sulfur source upstream of the tube furnace, introducing inert gas for calcination, and finally obtaining the modified high-performance cobalt-based sulfide catalytic material after the temperature is reduced to room temperature. The synergistic effect of the modified solvent, the precursor modifier and the modified sulfur source can effectively regulate the electronic structure of the material, increase the surface defects and active sites, greatly improve the ORR / OER dual-function catalytic kinetic rate and reduce the reaction energy barrier. Meanwhile, the Co / CoS heterojunction interface constructed through the synergistic effect of the three can induce interface electron redistribution and strengthen the Co-S bond strength of the system.

The application discloses a new method for synthesizing 3-acyl imidazo[1,5-a]pyridine compounds. The method comprises the following steps: adding 2-pyridyl-p-methanequinone (2-Py-p-QMs), terminal alkyne and p-toluenesulfonyl azide (TsN3), catalyst CuI, organic solvent and alkali into a reaction container under the condition of RT and O2 atmosphere, stirring the reaction for 4 hours, and then separating and purifying 3-acyl imidazo[1,5-a]pyridine compounds after the reaction is completed. The method expands the structure range of 3-acyl imidazo[1,5-a]pyridine products, and more compounds with rich structures can be obtained. Compared with the previous method for synthesizing the target product, the method is efficient, the reaction reagent is non-corrosive, the method design is novel, the raw material is cheap, the operation method is simple, and the product can be directly obtained under mild conditions.

The invention discloses a method for constructing an alpha-aza-aromatic hydrocarbon substituted propenone compound through dipole reversal alpha-position amination reaction of phosphine-catalyzed acetylenic ketone, and relates to a preparation method of the propenone compound. The reaction of the method can be carried out under the following conditions: small organic molecule triphenylphosphine is used as a catalyst, the temperature is 25-50 DEG C, dichloromethane is used as a solvent, acetylenic ketone and an N-heterocyclic aromatic compound are used as reaction substrates, the corresponding functionalized alkenyl ketone compound is obtained, and the highest conversion rate can reach 99%. The method has the advantages of mild reaction conditions, no use of a metal catalyst, environmental friendliness, wide substrate application range, high yield, simple operation, good regioselectivity and commercially available catalyst, and in addition, the target product alpha-aza-arene substituted propenone has potential biological activity and medicinal value.