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32results about How to "Conducive to large-scale industrial application" patented technology
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Preparation method of active carbon loaded catalyst for electrochemically catalyzing and degrading organic wastewater
ActiveCN105457643AHighlight substantive featuresSignificant progressWater contaminantsWater/sewage treatmentActivated carbonWastewater
The invention relates to a preparation method of an active carbon loaded catalyst for electrochemically catalyzing and degrading organic wastewater and belongs to the technical field of preparation of catalysts. The preparation method comprises the following steps: preparing an active carbon solid containing a plurality of types of active metal by using a sol-gel method; adding P2O5 powder into the active carbon solid containing the active metal and roasting; sublimating the P2O5 powder into gas at a high temperature; and when the gas is expanded at the high temperature and escapes, generating a plurality of small pores in the active carbon, so that the specific surface area and adsorption capability of the active carbon are improved. According to the preparation method, rare earth metal is used in match with the other active metal so that grains on the surface of the catalyst are uniform and thinned; and meanwhile, the preparation method is combined with a method of adding the P2O5 powder to roast, so that the catalysis efficiency of the prepared active carbon loaded catalyst can be improved by more than 5%-15%. The method has a simple process, is convenient to operate and is low in cost; and in a process of electrochemically catalyzing and degrading the organic wastewater by using the prepared catalyst, other oxidants do not need to be additionally added and the large-scale industrialized application of the preparation method is facilitated.
Owner:武汉森宁开源科技有限公司
Double-component organic silica gel for packaging of large power IGBT (insulated bipolar translator) and preparation method thereof
ActiveCN103045159ALow viscosityGood stabilityMacromolecular adhesive additivesSide chainOrganosilicon
The invention discloses a double-component organic silica gel for packaging of a large power IGBT (insulated bipolar translator) and a preparation method thereof. The organic silica gel is prepared by mixing a component A and a component B, wherein the component A is prepared by mixing the following components in parts by weight: 100 parts of vinyl silicone oil and 0.02-1 parts of platinum catalyst, the component B is prepared by mixing the following components in parts by weight: 70-90 parts of vinyl silicone oil, 10-30 parts of chain extender (end of which contains hydrogen silicone oil), 0.5-5 parts of cross-linking agent (side chain of which contains hydrogen silicone oil), 0.1-1 part of inhibitor, and 0.05-0.5 parts of antioxygen. When the double-component organic silica gel is used, the component A and the component B are stirred and mixed uniformly according to weight ratio of 1 to 1 so as to be solidified to obtain the organic silica gel. The organic silica gel takes silicone oil of high purity as raw material, and has good heat stability, low volatile matter, and high dielectric strength, thus meeting the use requirement of a large power IGBT module.
Owner:ZHUZHOU TIMES ELECTRIC INSULATION
Quick and clean process for preparing biological diesel oil with esterification/ester exchange reaction
InactiveCN101319169ALess investment in equipmentReduce energy consumptionFatty acid esterificationBiofuelsVegetable oilBiodiesel
The invention relates to a novel process for preparing biodiesel through natural oil which has different acid numbers and a rapid esterification / ester interchange reaction with catalysts of minute quantity at an alcohol-oil consolute temperature. The process comprises the following steps of: taking animal and vegetable oil as raw materials, adding the oil and methanol into a reaction kettle according to an alkyd mol ratio of 2 to 1-10 to 1 for rapid esterification, and adding the acid catalyst of minute quality which is 0.01-1 per mille of the weight of the oil with reaction conditions of 120-200 DEG C, 2.0-8.0Mpa, and 10-30min; after neutralization deacidification, adding refined oil and methane into a high-pressure reaction kettle according to a mol ratio of 1 to 6-1 to 20 for rapid ester interchange, and adding a base catalyst of minute quality which is 0.01-1 per mille of the weight of the refined oil with reaction conditions of 140-200 DEG C, 2.0-8.0Mpa, and 5-20min; carrying out the sedimentation or centrifuge of a reaction product, and generating a qualified biodiesel product after removing methane through upper layer liquid phase distillation. The process uses minute quantity of catalysts and does not need separation with quick reaction and simple procedure without pollution and corrosion. The process has the advantages of mild conditions, environmental protection and remarkable efficiency.
Owner:SICHUAN UNIV
Electrochemical reactor and method for electrocatalytically removing chloride ions
ActiveCN106673140AImprove electrolysis efficiencyImprove degradation rateWater contaminantsWater/sewage treatmentElectrochemical responseElectrolysis
The invention provides an electrochemical reactor and a method for electrocatalytically removing chloride ions and relates to the technical field of wastewater treatment. The anode of the electrochemical reactor comprises a net basket made of insoluble metal and a Ru-Ti-AC catalytic material filling the net basket, and a carbon rod or a metal wire is led out of the middle of the anode and connected to the positive pole of a power supply; a cathode comprises multiple metal plates or metal nets arranged at intervals, the interval between every two adjacent metal plates or metal nets is 4-6 cm, and the cathode is connected to the negative pole of the power supply through a wire. The electrochemical reactor is high in electrolytic efficiency and high in chloride ion degradation rate. The method for electrocatalytically removing the chloride ions is implemented with adoption of the electrochemical reactor. To-be-treated wastewater is introduced into a reaction tank of the electrochemical reactor and submerges the anode and the cathode, constant current is applied between the anode and the cathode, the wastewater is stirred continuously, and a reaction is performed for 0.1-2 h. The method is convenient to operate and beneficial to large-scale industrial application.
Owner:武汉骐琳环保科技有限公司
Method for synthesizing polysilane containing two bonds
The invention relates to a manufacture method for polysilane with double bond. It adopts electrochemical synthesis method, uses magnesium block as anode and cathode. Methyl trichlorosilane and allyl chloride are taking polymerization in tetrahydrofuran solution to compound polysilane with double bond. It has the advantages of mild reacting condition, easy to control, easy to operate, safe, high yield, short producing cycle. And it is suitable to be used in industrial in large.
Owner:SHANGHAI UNIV
Graphite modification method and graphite/silicon composite material
InactiveCN107732195AImprove surface defectsImprove electrochemical performanceGraphiteCell electrodesGraphitePorous electrode
Disclosed is a graphite modification method. The graphite modification method comprises the steps of performing ball milling on graphite powder, grinding balls and a ball grinding medium at the mass ratio of 1:(1-10):(7-50) at the rotary speed of 650-1,200r / min for 2-48h. The graphite / silicon dioxide porous electrode and the graphite / silicon composite material prepared from graphite obtained by the modification method provided by the invention obtain excellent electrochemical performance.
Owner:CHINA AUTOMOTIVE BATTERY RES INST CO LTD
Preparation method of catalyst used for electrical catalytic degradation of organic wastewater
ActiveCN106669678AAggregate adsorptionHigh catalytic activityOther chemical processesWater contaminantsElectrolysisNitrogen gas
The invention provides a preparation method of a catalyst used for electrical catalytic degradation of organic wastewater and relates to a preparation method of a wastewater treatment catalyst. The preparation method comprises the following steps: carrying out pretreatment on a coal-based activated carbon carrier, namely washing the activated carbon carrier to be neutral with deionized water, cooling, then washing to be neutral, carrying out ultrasonic cleaning for 20 minutes, and finally drying at the temperature of 80 DEG C for later use; and preparing a catalyst by adopting an in situ precipitation method, namely dispersing the pretreated coal-based activated carbon powder and amorphous Fe78Si13B9 powder into distilled water and putting in a three-mouth flask, under the protection of nitrogen atmosphere, adding 10-30ml of FeSO4.7H2O solution with the concentration of 1mol / L, alternately washing with ethanol for five times, carrying out vacuum drying for 12 hours by virtue of a drying oven, grinding a dried reaction product in a mortar, and screening by virtue of a 200-mesh sieve, so that a coal-based activated carbon supported amorphous Fe78Si13B9 / nano Fe3O4 catalyst is obtained. The prepared catalyst integrates adsorption, catalysis, internal electrolysis and magnetic separation into a whole, and solves the problems that the catalyst is difficult to separate and recycle and efficient removal of an organic matter is difficult.
Owner:丹东龙泽化工有限责任公司
Activated rust layer rust converting agent for electric transmission and transformation equipment and preparation method and application of rust converting agent
ActiveCN105543828AReduce the difficulty of surface treatmentImprove surface qualityMetallic material coating processesIonChemistry
The invention relates to an activated rust layer rust converting agent for electric transmission and transformation equipment and a preparation method and application of the rust converting agent and belongs to the technical field of corrosion prevention of special materials. The rust converting agent disclosed by the invention is prepared from the following components in parts by mass: 8-15 parts of phosphoric acid, 1-3 parts of citric acid, 0.5-3 parts of oxalic acid, 0.1-0.5 parts of thiourea, 0.1-0.5 parts of triethanolamine, 1-2 parts of zinc oxide, 5-8 parts of zinc dihydrogen phosphate, 0.1-1 parts of molybdate, 0.1-1 parts of hydrochloride, 0.5-1 parts of emulsifier, 0.5-1 parts of hydrofluoride, 0.5-1 parts of sodium benzoate, and 70-80 parts of deionized water. The components are added to a container according to proportion and mechanically stirred to be uniform, a product can be obtained after the reaction is completed and the solution is transparent and has not impurities, and in use, the rust converting agent can be brushed before a paint is coated. The rust converting agent is reasonable in component design and simple in preparation process, and the obtained rust converting agent has excellent performances, is wide in application scope and is convenient for large-scale production and application.
Owner:STATE GRID CORP OF CHINA +2
Synthesis of boron-contained silicone
InactiveCN101029135AImprove high temperature oxidation resistanceImprove performanceSilanesElectrochemistry
Synthesis of boron-contained silicone is carried out by taking magnesium block as cathode-anode, polymerizing silane dihalide or allyl chloride trihalide in butylene oxide solution and synthesizing to obtain the final product. It's simple, safe and controllable. It has gentle reactive condition and decreases C / C composite material high-temperature anti-oxidant performance and can be used as ceramic precursor.
Owner:SHANGHAI UNIV
Ru-Ti-AC catalytic material and a preparation method thereof
InactiveCN106622222AImprove degradation rateStir wellWater contaminantsWater/sewage treatmentSlurrySolvent
The invention provides a Ru-Ti-AC catalytic material and a preparation method thereof and relates to the field of activated carbon supported catalysts. The preparation method comprises the steps that activated carbon is soaked with an acidic aqueous solution, is washed with water and is dried to obtain pretreated activated carbon; the pretreated activated carbon is mixed with ruthenium chloride, butyl titanate, citric acid and a solvent, and even stirring is performed to obtain a mixed reaction solution, a pH value of the mixed reaction solution is regulated, and then reaction is performed at the temperature of 92-95 DEG C to obtain slurry; the slurry is evaporated to be dry at the temperature of 125-135 DEG C, a solid is obtained, and drying is performed to obtain an activated carbon solid; Na2CO3 powder is added to the activated carbon solid, even mixing is performed, calcination is performed at the temperature of 750-850 DEG C, and cooling is performed to obtain the material. The preparation method is simple in process, convenient to operate and low in cost, the prepared Ru-Ti-AC catalytic material can be used for electrical catalytic degradation of chloride ion wastewater, additional other oxidizing agents are not needed, the electrolytic efficiency is high, the chloride ion degradation rate is high, and large-scale industrialized application is promoted.
Owner:HUBEI UNIV
Plasma etching enhanced ternary mixed plastic flotation separation method
InactiveCN112677368AEasy to operateConducive to large-scale industrial applicationPlastic recyclingPhysical chemistryPlasma etching
The invention belongs to the technical field of solid waste pollution control and recycling, and provides a plasma etching enhanced ternary mixed plastic flotation separation method. The method comprises seven core process links including pretreatment 1, pretreatment 2, plasma etching 1, a flotation unit 1, pretreatment 3, plasma etching 2 and a flotation unit 2. The seven process links are sequentially connected in series and can be continuously operated on line; ternary mixed plastic fed in the pretreatment step 1 comprises PMMA, PTFE and ABS from different sources; sinking tailings 1 of the flotation unit 1 are the separated PMMA; sinking tailings 2 of the flotation unit 2 are the separated PTFE; and a floating product 2 of the flotation unit 2 is the separated ABS. The method is simple in process, relatively mild in process, free of a high-temperature pressurizing link and high in separation safety and efficiency.
Owner:BAOJI UNIV OF ARTS & SCI
Phase change heat storage composite material with flame retardance and flexibility as well as preparation method and application of phase change heat storage composite material
PendingCN114752217APrevent leakageImprove flame retardant performanceSecondary cellsHeat-exchange elementsLithium-ion batteryDibutyltin dilaurate
The invention discloses a phase change heat storage composite material with flame retardance and flexibility as well as a preparation method and application of the phase change heat storage composite material. The phase change heat storage composite material is prepared from phase change microcapsules, flaky aluminum oxide powder, hydroxyl-terminated polydimethylsiloxane, tetraethoxysilane, dibutyltin dilaurate and the like. The preparation method comprises the following steps: firstly, preparing a phase change microcapsule which takes paraffin as a core material and an inorganic non-combustible material as a wall material by adopting a self-assembly method; the preparation method comprises the following steps: preparing phase change microcapsules, uniformly stirring and mixing the prepared phase change microcapsules with flaky alumina powder, hydroxyl-terminated polydimethylsiloxane, tetraethoxysilane, dibutyltin dilaurate and other components, transferring the mixture into a mold, carrying out compression molding, and curing the obtained product in a drying oven to prepare the phase change heat storage composite material. The phase change heat storage composite material provided by the invention has good flame-retardant and flexible characteristics, can be used for a lithium ion battery heat management system, is simple and convenient in preparation method and low in material cost, and has relatively great industrial application potential.
Owner:CIVIL AVIATION FLIGHT UNIV OF CHINA
Synthesis of boron-contained silicone
InactiveCN100509919CImprove high temperature oxidation resistanceImprove performanceSilanesElectrochemistry
The invention relates to a method for synthesizing boron-containing polysilane. The method of the invention adopts an electrochemical synthesis method, uses magnesium blocks as cathode and anode, and polymerizes dihalogen silane or trihalogen and allyl chloride in tetrahydrofuran solution to synthesize boron-containing polysilane. The boron-containing polysilane obtained by the method of the present invention has mild reaction conditions, is easy to control, is simple and safe to operate, and the prepared boron-containing polysilane can obviously improve the high-temperature oxidation resistance of C / C composite materials, and is a kind of A kind of ceramic precursor with excellent performance. The method of the invention effectively solves the problems existing in the early research, and is beneficial to large-scale industrial application.
Owner:SHANGHAI UNIV
Preparation method of tandem solar cell capable of reducing cost and improving conversion efficiency
ActiveCN110767777BImprove conversion efficiencyAchieving Internet parityFinal product manufactureSolid-state devicesManufacturing cost reductionEngineering
Owner:东方日升(宁波)新能源有限公司
A carboxyl-containing organic photoelectric material and its preparation method and application
ActiveCN108102078BIncrease charge mobilityEnhanced hydrogen bond interactionsSolid-state devicesSemiconductor/solid-state device manufacturingCarboxylic acidMoiety
Owner:SOUTH CHINA UNIV OF TECH
Novel magnetic composite catalyst and preparation method thereof
PendingCN113769775AHigh catalytic activityImprove magnetismWater/sewage treatment by irradiationWater treatment compoundsPhoto catalyticPtru catalyst
The invention discloses a catalyst for photocatalytic degradation of organic wastewater and a preparation method of the catalyst, and relates to a wastewater treatment catalyst and a preparation method of the catalyst. The preparation method comprises steps: preparing g-C3N4 through thermal polymerization; then, constructing a ZnCo2O4 / g-C3N4 compound through a two-step in-situ reflux calcination method; and finally, preparing the Co78Si8B14 / ZnCo2O4 / g-C3N4 magnetic composite catalyst in situ through a mechanical ball milling method. The catalyst integrating adsorption, catalysis, photocatalysis and magnetic separation is prepared, and the problems that a / g-C3N4 catalyst photon-generated carrier is low in separation efficiency and difficult to separate and recycle, and organic matter is efficiently removed are solved.
Owner:SHENYANG UNIV
Electrochemical reactor and method for electrocatalytic removal of chloride ions
ActiveCN106673140BImprove electrolysis efficiencyImprove degradation rateWater contaminantsWater/sewage treatmentElectrochemical responseWastewater
An electrochemical reactor and a method for electrocatalytically removing chloride ions, which relate to the technical field of wastewater treatment. The anode in the electrochemical reactor is made of a mesh basket made of refractory metal, and Ru-Ti filled in the mesh basket. ‑AC catalytic material is composed of carbon rods or metal wires drawn from the middle of the anode and connected to the positive electrode of the power supply; the cathode is composed of multiple metal plates or metal meshes arranged at intervals, and the distance between two adjacent metal plates or metal meshes is 4 ~6cm, the cathode is connected to the negative electrode of the power supply through a wire. This electrochemical reactor has high electrolysis efficiency and high degradation rate of chloride ions. The electrocatalytic method of removing chloride ions is carried out using this electrochemical reactor, and the wastewater to be treated is It is introduced into the reaction tank of the electrochemical reactor, submerges the anode and cathode, applies a constant current between the anode and cathode, continuously stirs the wastewater, and reacts for 0.1 to 2 hours. This method is easy to operate and is conducive to large-scale industrial application.
Owner:武汉骐琳环保科技有限公司
Method for synthesizing polysilane containing two bonds
The invention relates to a preparation method of double bond-containing polysilane. The method of the invention adopts an electrochemical synthesis method, uses a magnesium block as an anode and cathode, and polymerizes methyltrichlorosilane and allyl chloride in a tetrahydrofuran solution to synthesize polysilane with a double bond. The double bond-containing polysilane obtained by the method of the present invention has mild reaction conditions, is easy to control, is simple and safe to operate, and the obtained double bond-containing polysilane has a high quality retention rate and a relatively high ceramic yield, The ceramic production rate of the precursor can be improved well, the preparation cycle of C / C-SiC is shortened, and the mechanical damage caused to the composite material during the preparation process is reduced. It effectively solves the problems existing in the early research and is conducive to large-scale industrial application.
Owner:SHANGHAI UNIV
Display panel, manufacturing method and electronic device
ActiveCN106952941BLess layersImprove bending performanceFinal product manufactureSolid-state devicesFlexible displayPhysics
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD +1
Polymer capable of quickly adsorbing low-concentration formaldehyde, and preparation method thereof
InactiveCN111171370ALarge specific surface areaLarge pore volumeGas treatmentOther chemical processesActivated carbonPtru catalyst
The invention discloses a polymer capable of rapidly adsorbing low-concentration formaldehyde, and a preparation method thereof. The method comprises the following steps: (1) dissolving beta-cyclodextrin, a ligand and a reaction catalyst into a solvent; (2) carrying out ultrasonic treatment on the mixed solution obtained in the step (1), purging the mixed solution with gas, and then carrying out aheating stirring reaction; and (3) washing the porous beta-cyclodextrin polymer obtained in the step (2), filtering, soaking, activating, and drying to obtain the polymer. The formaldehyde adsorbentbased on beta-cyclodextrin has excellent formaldehyde adsorption performance. Compared with the existing formaldehyde adsorbing material, the formaldehyde adsorbent of the invention has the advantagesthat the adsorption rate and the adsorption amount of low-concentration formaldehyde are greatly increased, the adsorption amount reaches 28.9 mg / g under 10 ppm and is 80 times that of common activecarbon, the adsorption rate is more than 10 times that of the common active carbon, and the requirement for rapid and efficient adsorption of indoor formaldehyde is met, so that the adsorbent has a great potential application prospect in the aspect of indoor low-concentration formaldehyde adsorption.
Owner:SOUTH CHINA UNIV OF TECH
Catalyst preparation method for electrocatalytic degradation of organic wastewater
ActiveCN106669678BAggregate adsorptionHigh catalytic activityOther chemical processesWater contaminantsElectrolysisNitrogen gas
A method for preparing a catalyst for electrocatalytic degradation of organic wastewater, involving a method for preparing a catalyst for treating wastewater. Pretreatment of a coal-based activated carbon carrier: wash the activated carbon carrier with deionized water until it is neutral, cool it, wash it until it is neutral, and ultrasonically clean it for 20 minutes. , and finally dried at 80°C for later use; the catalyst was prepared by in-situ precipitation method: the above-mentioned pretreated coal-based activated carbon powder and amorphous Fe 78 Si 13 B 9 Disperse the powder into distilled water and place it in a three-necked flask. Under the protection of nitrogen atmosphere, add FeSO with a concentration of 1 mol per liter. 4 .7H 2 10-30 ml of O solution, washed 5 times with ethanol alternately, vacuum dried in an oven for 12 hours, the dried reaction product was ground in a mortar and passed through a 200 mesh sieve to obtain coal-based activated carbon loaded amorphous Fe 78 Si 13 B 9 / nano Fe 3 O 4 catalyst. The invention prepares a catalyst that integrates adsorption, catalysis, internal electrolysis, and magnetic separation, which solves the problem of difficulty in separation and recovery of the catalyst and efficient removal of organic matter.
Owner:丹东龙泽化工有限责任公司
Double-component organic silica gel for packaging of large power IGBT (insulated bipolar translator) and preparation method thereof
The invention discloses a two-component silicone gel for high-power IGBT packaging and a preparation method. The silicone gel is made by mixing components A and B, wherein: the A component is made by mixing the following components in parts by weight: 100 parts of vinyl silicone oil, 0.02-1 part of platinum catalyst ; The B component is composed of the following components in parts by weight: 70-90 parts of vinyl silicone oil, 10-30 parts of chain extender (hydrogen-containing silicone oil at the end), 10-30 parts of cross-linking agent (side-chain hydrogen-containing silicone oil ) 0.5-5 parts, inhibitor 0.1-1 part, antioxidant 0.05-0.5 part. When in use, stir and mix components A and B at a weight ratio of 1:1, and solidify to obtain the product. The invention adopts high-purity silicone oil as raw material, has good thermal stability, low volatile content and high dielectric strength, and can meet the use requirements of high-power IGBT modules.
Owner:ZHUZHOU TIMES ELECTRIC INSULATION
A kind of active rust layer rust transfer agent for power transmission and transformation equipment and its preparation method and application
ActiveCN105543828BExtend your lifeReduce the difficulty of surface treatmentMetallic material coating processesThioureaPhosphate
Owner:STATE GRID CORP OF CHINA +2
Display panel, manufacturing method thereof, and electronic device
ActiveCN109065579BReduce thicknessGood encapsulation effectSolid-state devicesSemiconductor/solid-state device manufacturingFlexible displayMaterials science
Embodiments of the present invention provide a display panel, a manufacturing method thereof, and an electronic device, which improve an existing packaging module of a display panel. Both the display panel and the electronic device include: a substrate, a light-emitting functional layer is disposed on the substrate, a first inorganic encapsulation layer disposed on the light-emitting functional layer, a polarizing layer disposed on the first inorganic encapsulation layer, The second inorganic encapsulation layer disposed on the polarizing layer improves the encapsulation performance of the flexible display panel by arranging the polarizing layer in the encapsulation structure; in addition, the preparation method of the display panel provided by the application adopts a process integration method, and the process The method is simple, low in production cost and high in production efficiency, and is conducive to large-scale industrial application.
Owner:GUANGZHOU GOVISIONOX TECH CO LTD
A sacubitril valsartan sodium pharmaceutical composition and preparation method thereof
InactiveCN109464442BUndamagedGood reproducibilityOrganic non-active ingredientsCardiovascular disorderPharmaceutical drugSacubitril, Valsartan
The invention belongs to the technical field of pharmaceutical preparations, and particularly relates to a sacubitril valsartan sodium pharmaceutical composition and a preparation method of the sacubitril valsartan sodium pharmaceutical composition. The preparation method comprises the following steps: adopting a solvent individually granulated through a wet method by using acetone at the specificproportion as the raw material, then mixing and granulating, drying a granulated particle in combination with drying under reduced pressure at the lower temperature, the process with excellent repeatability is obtained when the scale is enlarged / reduced, and a drug is guaranteed not to be damaged in the preparation process. The stability and the uniformity of the obtained pharmaceutical preparation are excellent, and the pharmaceutical preparation is favorable for the excellent promotion of the drug to the treatment of congestive heart failure, high blood pressure and the like.
Owner:裴建梅
A kind of fe-co-ac catalytic material and preparation method thereof
ActiveCN106964354BImprove degradation rateStir wellWater contaminantsWater/sewage treatmentActivated carbonElectrolysis
A Fe‑Co‑AC catalytic material and its preparation method, which relates to the field of activated carbon supported catalysts. The preparation method is to soak the activated carbon in an acidic aqueous solution, wash it with water, and dry it to obtain pretreated activated carbon; combine the pretreated activated carbon with ferric nitrate Solution, cobalt nitrate solution, and citric acid are mixed, stir evenly to obtain a mixed reaction liquid, adjust the pH value of the mixed reaction liquid, and then react at 70 to 90°C to obtain a slurry; evaporate the slurry to dryness at 100 to 120°C to obtain a solid , dry to obtain activated carbon solid; add P to the activated carbon solid 2 O 5 Powder, mix evenly, roast at 300-700°C, and cool to obtain. This preparation method has simple process, convenient operation and low cost, and the prepared Fe‑Co‑AC catalytic material can be used for electrocatalytic degradation of chloride ion wastewater without the need for In addition, by adding other oxidants, the electrolysis efficiency is high and the chloride ion degradation rate is high, which is conducive to large-scale industrial application.
Owner:HUBEI UNIV
A preparation method of activated carbon-supported catalyst for electrocatalytic degradation of organic wastewater
ActiveCN105457643BHighlight substantive featuresSignificant progressWater contaminantsWater/sewage treatmentElectricityActivated carbon
The invention relates to a method for preparing an activated carbon-supported catalyst for electrocatalytic degradation of organic wastewater, and belongs to the technical field of catalyst preparation. The present invention prepares activated carbon solids containing multiple active metals through the sol-gel method, and then adds P2O5 powder to the activated carbon solids containing active metals for roasting. The P2O5 powder sublimates into gas at high temperature, and the gas expands and escapes under high temperature conditions. When it comes out, many small pores will be generated in the activated carbon, which increases the specific surface area and adsorption capacity of the activated carbon. The present invention uses rare earth metals in conjunction with other active metals to make the surface particles of the catalyst uniform and refined. At the same time, combined with the method of adding P2O5 powder for roasting, the catalytic efficiency of the prepared activated carbon-loaded catalyst can be increased by 5% to 15%. above. The method of the invention has simple process, convenient operation and low cost, and the prepared catalyst does not need to add other oxidants in the process of electrocatalytically degrading organic wastewater, which is beneficial to large-scale industrial application.
Owner:武汉森宁开源科技有限公司
Electrochemical oxygen catalytic reduction cathode material for water treatment and preparation method thereof
PendingCN111056598AHighlight substantiveSignificant progressWater/sewage treatment by oxidationElectrochemical responseWater processing
The invention relates to an electrochemical oxygen catalytic reduction cathode material for water treatment and a preparation method thereof, and belongs to the technical field of preparation of catalytic materials. A mesh material, a porous material or a foam material containing any one metal matrix material of steel, chromium, nickel, titanium, stainless steel and copper is used as a raw material; after the raw material is processed by an oxygen (O) chemical combination treatment, a sulfur (S) chemical combination treatment, a nitrogen (N) chemical combination treatment or a phosphorus (P) chemical combination treatment; the raw material is used as an oxygen catalytic reduction cathode material of an electrochemical cathode oxygen reduction technology for water treatment, so that electron transfer in the cathode electrochemical catalytic oxygen reduction process is easier, and the capacity of generating active oxygen (HO., H2O2 and O3) in-situ on an electrode of an electrochemical reactor is greatly improved; and therefore, the efficiency of electrochemical catalytic degradation of organic wastewater is greatly improved, compared with that of a traditional electrode. The method is simple in process and convenient to operate, is much lower in cost than a traditional precious metal material, is much higher in cathode efficiency than a common graphite material, and has a great practical application value.
Owner:HUBEI UNIV +1
Preparation method of 4-amino-n-[(2r, 3S)-3-amino-2-hydroxyl-4-phenylbutyl]-N-isobutylbenzenesulfonamide
ActiveCN104387299BLow costImprove stabilitySulfonic acid amide preparationP-nitrobenzenesulfonyl chloridePhenylalanine
The invention discloses a method for preparing 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide. The method comprises the following steps: S1: enabling L-phenylalanine and diazomethane to react to obtain a diazo methyl ketone intermediate product, and enabling the diazo methyl ketone intermediate product and haloid acid to react to obtain a compound A; S2, conducting carbonyl deoxidation on the compound A to obtain a compound B; S3, under the existence of iso-butylamine, conducting cyclization reaction and ring-opening reaction on the compound B in sequence to obtain a compound C; S4, enabling the compound C and nitrobenzenesulfonyl chloride to react to obtain a compound D; S5, conducting nitro reduction on the compound D to obtain the 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide. The method is simple in course, low in cost, mild in condition, and higher in intermediate product stability, and is beneficial for industrial application.
![Preparation method of 4-amino-n-[(2r, 3S)-3-amino-2-hydroxyl-4-phenylbutyl]-N-isobutylbenzenesulfonamide](https://images-eureka.patsnap.com/patent_img/bd9ae0d2-1855-4e27-ad1e-95b69d919dc6/HDA0000592763380000011.PNG "Preparation method of 4-amino-n-[(2r, 3S)-3-amino-2-hydroxyl-4-phenylbutyl]-N-isobutylbenzenesulfonamide")
![Preparation method of 4-amino-n-[(2r, 3S)-3-amino-2-hydroxyl-4-phenylbutyl]-N-isobutylbenzenesulfonamide](https://images-eureka.patsnap.com/patent_img/bd9ae0d2-1855-4e27-ad1e-95b69d919dc6/HDA0000592763380000021.PNG "Preparation method of 4-amino-n-[(2r, 3S)-3-amino-2-hydroxyl-4-phenylbutyl]-N-isobutylbenzenesulfonamide")
![Preparation method of 4-amino-n-[(2r, 3S)-3-amino-2-hydroxyl-4-phenylbutyl]-N-isobutylbenzenesulfonamide](https://images-eureka.patsnap.com/patent_img/bd9ae0d2-1855-4e27-ad1e-95b69d919dc6/HDA0000592763380000031.PNG "Preparation method of 4-amino-n-[(2r, 3S)-3-amino-2-hydroxyl-4-phenylbutyl]-N-isobutylbenzenesulfonamide")
Owner:ASYMCHEM LAB TIANJIN +4
Method for flotation separation of PET from PVC based on low-temperature plasma induction
InactiveCN112588428AEasy to operateConducive to large-scale industrial applicationWet separationChemistryProcess engineering
The invention belongs to the technical field of solid waste pollution control and recycling, and relates to a method for flotation separation of PET from PVC based on low-temperature plasma induction.According to the method, polyvinyl chloride (PVC) and polyethylene glycol terephthalate (PET) with different sources and mass ratios are used as feed materials, four process links (pretreatment step1, plasma contact induction, pretreatment step 2 and a flotation unit) are sequentially connected in series, the flotation unit is used for discharging, a floating product is PET, and a sinking tailing is separated PVC. The method has the advantages of simple process, no solvent addition in the plasma contact induction process, no use of an oxidant and an additional catalytic agent, no toxicity orharm to the environment, cost saving, effective reduction of the secondary pollution of the water body, simple operation, and facilitation of industrial large-scale application.
Owner:BAOJI UNIV OF ARTS & SCI
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