214results about How to "Promote redox reactions" patented technology

The invention discloses preparation and application of a graphene / substrate electrode and a polyaniline-graphene / substrate electrode and belongs to the technical field of electrodes. The preparation comprises the following steps of: dispensing a graphene oxide aqueous solution on a substrate; reducing a graphene oxide / substrate electrode by employing a three-electrode system and cyclic voltammetry to obtain the graphene / substrate electrode; soaking the graphene / substrate electrode in a polyaniline aqueous solution; and taking out and drying to obtain the polyaniline-graphene / substrate electrode. The method is simple in process, convenient, rapid, green and free from pollution, and the power output of a microbial fuel cell can be obviously improved.

A method is provided for recovering oil from a subterranean oil-bearing formation. One or more pairs of electrodes are inserted into the ground in proximity to a body of oil in said formation. A voltage difference is then established between the electrodes to create an electric field in the oil-bearing formation. As voltage is applied, the current is manipulated to induce oxidation and reduction reactions in components of the oil. The oxidation and reduction reactions lower the viscosity in the oil and thereby reduce capillary resistance to oil flow so that the oil can be removed at an extraction well.

The invention belongs to the technical field of energy materials, and specifically relates to a modified diaphragm for a lithium-sulfur battery, a preparation method of the modified diaphragm and the lithium-sulfur battery with the diaphragm; the diaphragm adopts a diaphragm body of a commercial battery as a skeleton, and a decorative coating is coated on one side of the diaphragm body; and the decorative coating consists of nanometer inorganic particles containing molybdenum element, a conductive agent and a binder. Through the diaphragm for the commercial battery and the nanometer inorganic particles containing molybdenum element as raw material and a proportional relation among the raw materials, the composite diaphragm for the lithium-sulfur battery is formed through a simple technology, the technology is simple and controllable, a complex and energy-consuming sulfur-filling process is not needed, the raw materials are wide in sources, the cost is low, and the technology is beneficial for large-scale implementation. The lithium-sulfur assembled in the invention is high in capacity and good in cycle performance, and the preparation technology is simple and controllable, economical and environmentally-friendly, and is applicable for large-scale production.

The invention relates to a preparation method of nitrogen and oxygen in-situ codoped porous carbon electrode material and an application thereof. The nitrogen and oxygen in-situ codoped porous carbon electrode material is excellent in conductivity, great in chemical stability, three-dimensional and abundant in pore channels. An animal bone, such as an ox bone, a swine bone and a goat bone, is adopted to act as a carbon precursor. The organic component of collagen in the bone acts as a carbon and nitrogen source, and the inorganic component acts as a natural template to act as supporting material in the carbonization process and a pore channel regulating structure for controlling change and size of hydroxyapatite crystals so that the material is prepared. The porous carbon electrode material is abundant and prosperous in pore structures and has micropores, mesopores and macropores with the specific surface of being 1000-3000m<2>g<-1> so that the porous carbon electrode material can be used as supercapacitor electrode material.

The invention provides a cellulose / silver chloride composite material and a preparation method thereof. The cellulose / silver chloride composite material is quickly prepared by adopting microcrystalline cellulose, sliver salt and chlorine compound as the materials, adopting water as solvent and adopting an ultrasonic-wave treatment method. The cellulose / silver chloride composite material prepared by the preparation method disclosed by the invention is uniform in silver / silver chloride nanometer particle, capable of being uniformly distributed on a cellulose substrate and is extensive in application prospect in the antibacterial filed and the photocatalysis filed. Moreover, according to the preparation method disclosed by the invention, the materials are cheap, the process is simple, the operation is convenient, the preparation is quick and the process conditions are easy to control, so that the production process is greatly simplified, the time is saved and the cost is reduced. Meanwhile, the preparation method is free of any expensive and complex equipment and is beneficial to the industrial popularization.

The invention discloses a method for preparing composite steel slag carbonized bricks, and belongs to the technical field of industrial waste slag utilization. According to the method, steel slags, kerosene and grinding aids are mixed, ball milled, ignited and cooled to obtain combustion slags; the combustion slags are then crushed and sieved to obtain pretreated steel slag powder; aggregates, thepretreated steel slag powder and hydrated lime are stirred and mixed with dispersion liquid to be poured into shape and placed at constant temperature and humidity to obtain unburned bricks; the unburned bricks are subjected to autoclave oxidation and fumigated with vinegar to obtain fumigated bricks; the fumigated bricks are then transferred to a carbonization box and subjected to carbonizationat constant temperature and humidity, and the composite steel slag carbonized bricks are obtained after discharge. The composite steel slag carbonized bricks prepared by adopting the method have excellent strength and stability.

The invention provides a preparation method of an iron-manganese bimetal composite catalyst and an application thereof in the purification of industrial waste water, which relates to the technical field of catalysts. The preparation method comprises the following steps: (1) soaking the activated carbon in nitric acid solution for 4-6 hours later, taking out the activated carbon, washing and dryingto obtain the modified activated carbon; (2) adding Fe(NO3)3.9H2O to Mn(NO3)2 solution with the weight concentration of 45-50% to prepare the mixed solution, adding the modified activated carbon intothe mixed solution, water bathing for 8-9 hours, absorbing Fe(NO3) 3 and Mn(NO3)2 by modified activated carbon; (3) taking out the modified activated carbon adsorbed with Fe(NO3) 3 and Mn(NO3)2 fromthe solution, cleaning, drying, calcining in nitrogen atmosphere, and cooling to obtain the iron-manganese bimetal composite catalyst. The catalyst of the invention can effectively remove the organicmatter in the waste water, accelerate the reaction rate, and improve the purification speed; meanwhile, more adsorption sites of the organic matter can improve the catalytic efficiency, improve the utilization rate of ozone, and speed up the oxidation process.

The invention provides a method for disposing sludge. The method comprises the following steps of: mixing sludge to be disposed with oxidants and an oxidation guide catalyst to carry out redox reaction; and mixing the redox reaction product with a flocculant to carry out coagulation to obtain a solid substance and filtrate, wherein the mass ratio of the oxidation guide catalyst to the dry basis of the sludge to be disposed is (3-8%):1; and the oxidation guide catalyst comprises 5-45wt% of metallic compounds and 55-95wt% of adsorbents. The method has the beneficial effects that when the sludge is disposed with the oxidation guide catalyst capsule adopted in the method provided by the invention, the initiation effect of the oxidation guide catalyst capsule can be exerted, without adding pH value regulators to the oxidation guide catalyst capsule, so that the oxidants can better decompose organic substances in the sludge in an oxidative manner; and therefore the sludge disposed by the method is neutral and the subduction amount of the sludge reaches the maximum, thus being beneficial to conduction of the subsequent process.

The invention discloses a preparation method of a ferrite modifying MXene layered gas diffusion electrode. The preparation method comprises the following steps that (1) an MXene material is prepared;(2) ferrite modifies the MXene material; and (3) the layered gas diffusion electrode is prepared. The invention further discloses the ferrite modifying MXene layered gas diffusion electrode and application thereof. The ferrite modifying MXene layered gas diffusion electrode can be used for preparing electrochemical cathode materials which are applied to an electrochemical / ozone coupling water treatment system. The preparation method can easily get the raw materials, the technological operation is simple, the cost is low, the electrode strength is high, the electrochemical catalytic activity ishigh, the dispersity is good, and the water treatment technique consumes low energy and has the high efficiency. The ferrite modifying MXene layered gas diffusion electrode prepared by adopting the method has the wide application prospects on degradation treatment of PPCPs (pharmaceutical and personal care products) pollutants on the three-phase reaction interface.

The invention discloses a quadruple effect catalyst of diesel tail gas. The catalyst consists of carrier magnesium-aluminium (Mg-Al) hydrotalcite composite oxide, potassium (K) and noble metal, wherein the K and the noble metal are loaded on the carrier Mg-Al hydrotalcite composite oxide; the noble metal is palladium (Pd), platinum (Pt) or rhodium (Rh); the load capacity of the K is 7 to 10 weight percent; and the load capacity of the noble metal is 1 to 2 weight percent. Meanwhile, the invention also discloses a preparation method and application of the catalyst. The catalyst is simple in preparation and easy to operate; the prepared catalyst can remove four main pollutants, namely carbon smoke particles (PM), nitrogen oxide (NOx), carbon oxide (CO) and unburned hydrocarbons (HC); and after being coated on a diesel particle filter, the catalyst can be directly applied to post-treatment of the diesel tail gas, has a good treatment effect and is applied to industrial promotion.

The invention discloses a method for recovering copper from a waste circuit board and belongs to the technical field of hydrometallurgy. The method comprises the following steps: firstly crushing the waste circuit board into powder, fully mixing the powder, an ammonia water solution, an ammonium chloride solution and water to obtain ore pulp, introducing air into the ore pulp, and carrying out ultrasonic wave intensified leaching under a stirring condition; and periodically adding hydrogen peroxide in the intensified leaching process so as to leach copper from the waste circuit board, wherein the leaching rate of copper from the waste circuit board leached in 1 hour reaches over 98%. The method disclosed by the invention realizes resource utilization of effective components of the waste circuit board and moreover, the method has the advantages of being environment-friendly, mild in reaction and short in technological process, the production cost can be lowered and the metal copper recovery rate is high, and the method is suitable for recovering valuable metals in the waste circuit board.

The invention provides a device for treating waste water containing salt through coupling of electrodes and anaerobic organisms, which comprises a cylindrical anaerobic reactor, the lower part of the anaerobic reactor is provided with a water distributor, the middle is provided with an anode and a cathode and connected with an external power supply through a wire, the upper part is provided with a three-phase separator, and the external is provided with a thermal insulating layer. The anode and the cathode are coaxially inserted into the 1 / 4 part of the effective height of the reactor, the lengths of the anode and the cathode are 50% of the effective height of the whole reactor, and externally applied voltage is optimally 1.2V. In the technology, iron-carbon electrodes are arranged in the anaerobic reactor for treating waste water containing salt with a high electricity conducting rate, the activity of anaerobic microorganisms is enhanced under the coupling action of an electric field and ferrous ion release, and the dwelling time of sludge in the reactor is prolonged, so that the metabolism speed of the microorganisms is raised, and the biomass is increased. The device is favorable to sieving efficient halophilic microorganisms, is used for treating high concentration of organic waste water containing salt, and has remarkable innovation, good effect for treating the waste water and good application prospect.

The invention belongs to the technical field of composite materials and more particularly, to a flexible self-supported porous carbon @ layered bimetallic hydroxide composite material, its preparation method and application. The preparation method comprises the following steps: 1) placing melamine sponge into a tubular furnace and obtaining a self-supported porous carbon skeleton after high temperature carbonation; and 2) dissolving two kinds of metal salt and precipitating agent into de-ionized water for a metal-and-salt solution, and then immersing the porous carbon skeleton materials prepared in the step (1) into the metal-and-salt solution so that it undergoes processes of nucleating and growing under a hydrothermal condition, and filtering, washing, and drying. The preparation equipment and the technology are both simple and convenient. The prepared flexible self-supported porous carbon @ layered bimetallic hydroxide composite material, with rapid transmission channels for electrons and ions, can achieve good elasticity and flexibility, high specific capacitance and good rate characteristics.

The invention provides automatic ignition powder for a gas generator of an air bag restraint system of an automobile and a preparation method of the automatic ignition powder.The automatic ignition powder contains fuel, oxidant and flame accelerator; the flame accelerator is rare earth and perovskite type composite metal oxide; the general formula of the flame accelerator is La1-xAxMnO3, wherein A is Ce and / or Cu, and x is greater than zero and less than one.According to the automatic ignition powder, the specific flame accelerator is adopted and can effectively promote a redox reaction in the powder, thereby thermal decomposition of the automatic ignition powder is promoted, the decomposition temperature of the powder is lowered, and automatic ignition performance of the powder is improved.

The invention discloses a multi-efficacy composite enzyme preparation for feed. The multi-efficacy composite enzyme preparation comprises the following enzymes in percentage by weight: 30 to 40 percent of xylanase, 10 to 20 percent of beta-glucanase, 15 to 20 percent of mannose and 30 to 40 percent of glucose oxidase. Compared with the prior art, the product of the multi-effect composite enzyme preparation has the following advantage that the influence on the animal production performance is improved by adopting a mode of improving the nutrient digestive utilization and relieving anti-nutrition factors. In addition, the glucose oxidase consumes O2 in the process of acting with glucose, anaerobic environment can be more easily formed in a digestive tract, meanwhile, gluconic acid is generated for promoting the propagation of anaerobic bacteria, and the effects of acidulants and probiotics are realized. The intestinal tract acid digestion environment is sufficiently improved, the growth and the propagation of the germs in the intestinal tract are controlled, the completeness of the intestinal tract epidermal cells is protected, and the intestinal tract flora ecological balance is regulated.

The invention relates to the technology of accelerating aging of brandy, and in particular relates to a method for quickly aging brandy by controlling irregular oak by oxidation-reduction potential combined high-pressure and micro-aerobic. The method comprises the following steps: putting brandy raw wine into a container; adding irregular oak; introducing oxygen into the brandy raw wine in the container, and applying a certain electric field intensity to control the oxidation reduction potential of the brandy raw wine to be 20mV-200mV. Therefore, extraction on the irregular oak by the brandy raw wine can be accelerated, and the aging time can be shortened. According to the method, the effect of aging the brandy raw wine for 10-30 minutes can be close to that of natural aging for 6-12 months, the aging time can be greatly shortened, and the aging efficiency can be remarkably improved.

The invention belongs to the field of agriculture, and specifically provides a soil disinfectant, which consists of a solution A and a solution B, and is characterized in that: the solution A contains a hydrogen peroxide decomposition catalyst; and the solution B contains hydrogen peroxide. The invention further provides a soil disinfecting method. The method comprises the following steps of: (1) adding the solution A into soil to be disinfected; and (2) adding the solution B into the soil to be disinfected after the solution A permeates into the soil. As proved by an experiment result, the solution A reacts with the solution B rapidly after contacting for decomposing oxygen and heating, the generated heat is used for heating soil to 70-150 DEG C and sterilizing bacteria and eggs in the soil, degradation of pesticides can be facilitated, and lands containing plenty of trace elements are provided; and the soil disinfectant is safe, reliable and environment-friendly.

The present invention provides an MFC preparing method which uses the aerobic microorganism as the cathode catalyst, the catalyst which adopts the microorganism as the cathode successfully actuates the biological cathode biological fuel cell which has a double-cell structure, the electrode material is conductive carbon fiber and the anode takes the glucose as substrate, the cathode takes NaHCO3 as inorganic carbon source and the perforated pipe aerates. The result showed that after 9d actuation the battery voltage gets to 0.324V(R=500 omega), the maximum power density is 24.7W / m<3> when the aeration amount is 300Ml / min, as the metal catalyst is saved and the fabricating cost of MFC is reduced the application of MFC in project is provided with a novel approach and possibility.

The invention relates to a nitrogen-doped graphene / nano titanium dioxide photocatalyst as well as a preparation method and application thereof. The nitrogen-doped graphene / nano titanium dioxide photocatalyst contains nitrogen-doped graphene, and titanium dioxide supported to the nitrogen-doped graphene, wherein the nitrogen-doped graphene contains a nitrogen source; the nitrogen source comprises graphite nitrogen and pyrrole nitrogen; and a mass ratio of the nitrogen-doped graphene to titanium dioxide is (0.005-0.05):1, preferably (0.01-0.02):1.

The invention discloses a preparation method for a one-dimensional tubular MOF material. The preparation method comprises the following steps of: dispersing ZnCo-BTC nanowires in an aqueous ethanol solution to form a uniform suspension A; dissolving 2-methylimidazole in another aqueous ethanol solution to form a solution B; heating the solution B in a water bath kettle to a reaction temperature, pouring the suspension A, carrying out a reaction under stirring at a constant temperature, and subjecting a product to centrifugation; and then washing the product with ethanol and deionized water insequence, and finally carrying out drying to obtain the one-dimensional tubular MOF material. The one-dimensional tubular MOF material is annealed in argon and then pickled to obtain a one-dimensionalnitrogen-doped porous carbon nanotube material. The preparation method of the invention has the advantages of simple operation, low cost and easily controllable process; and the prepared product canbe applied not only to electrochemical lithium ion storage, but also to other fields such as separation, catalysis, sustained drug release and energy.

The invention relates to a fertilizer suitable for rice and a preparation method and application of the fertilizer. The fertilizer comprises a leaf surface spraying agent and a soil conditioner, wherein the leaf surface spraying agent comprises 200-230 parts of silicon dioxide, 60-80 parts of potassium nitrate, 8-15 parts of calcium nitrate, 2-3 parts of selenium, 2 or less parts of added elements, 1-2 parts of a plant growth regulator, 0.1 or less part of a bacteriostat and 1,000 parts of water; and the soil conditioner comprises 60-100 parts of potassium-rich rock, 30-50 parts of quick lime,150-300 parts of a sugar alcohol solution, 3-4 parts of urine, 4-5 parts of diammonium phosphate, 0.5-1.5 parts of microelements, 30-50 parts of livestock feces, 20-40 parts of crop straw, 10-30 parts of humic acid, 0.5-1.5 parts of biological bacteria and 0.1 or less part of a bactericide. According to the fertilizer, cadmium is effectively reduced through both the leaf surface spraying agent and the soil conditioner.

The invention discloses a nitrogen-doped carbon material modified silver phosphate composite photocatalyst, a preparation method and application thereof. The silver phosphate composite photocatalyst comprises a nitrogen-doped carbon material, and silver phosphate particles are loaded on the nitrogen-doped carbon material. The preparation method comprises the following steps: preparing the nitrogen-doped carbon material into a nitrogen-doped carbon material dispersion liquid, adding an Ag<+> solution to prepare a nitrogen-doped carbon material / Ag<+> dispersion liquid, and adding an HPO4<2-> solution to prepare the silver phosphate composite photocatalyst. The silver phosphate composite photocatalyst disclosed by the invention has the advantages of high photo-induced electron-hole pair separation efficiency, strong light corrosion resistance, strong photocatalytic activity and the like, is a novel efficient visible light photocatalyst, can be widely applied to removal of organic pollutants in the environment, and has very high use value and very good application prospect. The preparation method of the silver phosphate composite photocatalyst has the advantages of simple process, operation method, low cost, greenness, no pollution and the like, is suitable for large-scale preparation, and is beneficial to industrial application.

The invention discloses a remediation system and a remediation method of volatile organic polluted soil and belongs to the technical field of remediation of the polluted soil. The system comprises a steam subsystem, an ozone subsystem and an exhausting subsystem; the steam subsystem comprises a steam injection well, a steam pipeline and a steam generation device; the steam injection well is arranged in a polluted soil region and vertically and downward extends to the lower side of an underground water aquifer along the earth surface; the exhausting subsystem comprises an exhausting well, an exhausting pipeline and a gas-liquid treatment device; the exhausting well is located at a part adjacent to the steam injection well and vertically and downward extends to the upper side of the underground water aquifer along the earth surface; the ozone subsystem comprises an ozone injection well, an ozone pipeline and an ozone generation device; the ozone injection well is arranged along the periphery of the polluted soil region and surrounds the steam injection well and the exhausting well; the ozone injection well extends to the lower side of the underground water aquifer. The remediation system and method of the volatile organic polluted soil have the advantages of high remediation efficiency of the volatile organic polluted soil and good adaptability to different types of soil.

The invention provides a dual-metal hydroxide@ nickel molybdate@ graphene nanocomposite and a preparation method and an application thereof. Compared with the prior art, the preparation method disclosed in the invention achieves high product purity, high dispersity, high crystalline form and controllability, low production cost and high reproducibility; the prepared dual-metal hydroxide@ nickel molybdate@ graphene nanocomposite is grown on carbon cloth and can be directly used as a flexible electrode material of a supercapacitor, so that high stability, high specific capacitance, high energy density and power density are realized; and in addition, the carbon cloth has the flexible electrode and foldable and wearable properties, so that the nanocomposite has infinite development in the future wearable electrochemical energy storage equipment.

The present invention provides a method of forming non-toxic and anticorrosive RE conversion film on aluminum alloy part surface. The technological scheme is that during treating aluminum alloy part with treating solution comprising RE salt and oxidant, one DC power source is applied, so as to form homogeneous compact protecting RE film on the surface of aluminum alloy part. The present invention has the common effect of applied current and the treating solution, and possesses the advantages of simple apparatus, easy operation and low cost.

The invention discloses a method for treating hexavalent chromium pollution in water. The method includes following steps: homogenizing and acidifying wastewater containing hexavalent chromium, and adding a reducing agent composed of ferrous sulfate, polyphosphorus ferric chloride and urea for redox reaction; adding alkali to redox reaction liquid for flocculation precipitation reaction, and allowing supernate after flocculation precipitation to enter a biological reaction tank for biological reaction under action of medical stone powder, lignin powder and activated sludge in the biological reaction tank to obtain wastewater after being treated. By the method, various physiochemical indexes of the wastewater after being treated can reach discharging standards, COD, BOD, SS and hexavalent chromium ion content is lowered effectively. The method is simple in treatment process, low in agent consumption, good in treatment effect, stable in performance and good in outgoing water quality andhas great application prospect.

The invention discloses a twin-tower type flue gas deep purification device through plasma coupling and sodium based absorption. The desulfurization tower and denitration tower in the device are separated from each other. The desulfurization tower comprises a desulfurization slurry circulating tank, a desulfurization spraying layer, a desulfurization demister, and a desulfurization flue gas outlet from bottom to top. A plasma demisting and oxidizing device comprises a demisting part and an oxidizing part, and the lower ends of the demisting part and the oxidizing part are both provided with a demisting wastewater outlet. The denitration and demercuration tower comprises a denitration and demercuration slurry circulating tank, a filling material layer, a denitration and demercuration spraying device, a denitration and demercuration demister, and a denitration and demercuration flue gas outlet from bottom to top. A desulfurization flue gas outlet is arranged between the desulfurization slurry circulating tank and the desulfurization spraying layer. The denitration and demercuration slurry circulating tank is connected to the oxidizing part. The demisting part is connected to the desulfurization flue gas outlet. The desulfurization slurry circulating tank is connected to the desulfurization spraying layer. The denitration and demercuration slurry circulating tank is connected to the denitration and demercuration spraying device. The desulfurization slurry circulating tank and the demisting wastewater outlet are both connected to the denitration and demercuration slurry circulating tank.

The invention discloses a preparation method of a combination electrode of a transition metal modified TiO2-MOFs membrane, comprising the following steps: 1) preparation of MOFs membrane material; 2)preparation of TiO2-MOFs membrane; 3) preparation of the combination electrode of the transition metal modified TiO2-MOFs membrane. The invention further discloses the combination electrode of the transition metal modified TiO2-MOFs membrane and application of the combination electrode. The combination electrode of the transition metal modified TiO2-MOFs membrane can prepare electrochemical and photocatalytic electrode materials and can be used for a photoelectric coupling water treatment system. The preparation method has advantages of convenient material drawing, simple process and operation, and low cost, and the combination electrode has high photoelectric catalytic activity and stable property, and can effectively treat water pollution. The combination electrode of the transition metal modified TiO2-MOFs membrane composite prepared by the preparation method has broad application prospects in removing organic filter pollutants by photocoupling degradation.

The invention belongs to the technical field of brewing and particularly relates to a Maotai-flavor baijiu continuous mixed fermentation burying method. The method includes steps: performing combinational primary blending of fresh baijiu; naturally ageing in a baijiu storehouse, performing secondary combination, blending and flavoring; proportionally mixing, and carrying out stacking fermentation for baijiu burying in pits; transferring blended finished baijiu into jars in the pits, covering the jars with lids, hermetically tying with kraft paper and waterproof cloth, and filling each jar with fermented grains subjected to stacking fermentation to a neck position; completely sealing the jars and the pits with unique purplish red mud in Maotai Town, and burying for two years; taking original baijiu from fermented grains in the pits as flavoring liquor, and adding into long-time stored baijiu according to different proportions, so that finished baijiu products are obtained. The defects of large ageing quality difference, long storage time and slow capital turnover of existing baijiu storage methods are overcome, aroma, flavor and medicinal ingredients of baijiu are increased, and baijiu quality is improved while healthcare value of baijiu is increased.