44results about How to "Low cost for industrial applications" patented technology

The invention discloses a polypyrrole-sensitized hollow titanium dioxide nanometer photocatalyst and a preparation method thereof. The preparation method comprises the following steps of: carrying out hydro-thermal synthesis to obtain nanometer carbon pellets by utilizing glucose; with the carbon pellets as a template agent, loading a titanium dioxide film layer on the surface through a sol-gel method to prepare carbon / titanium dioxide microspheres; sintering the microspheres to prepare hollow titanium dioxide nanometer microspheres; and loading a suitable amount of polypyrrole on the surface of the hollow titanium dioxide by utilizing a chemical in-situ polymerization method to obtain the polypyrrole-sensitized hollow titanium dioxide nanometer photocatalyst. The microspheres prepared by the method disclosed by the invention have adjustable diameters, and the thickness of the titanium dioxide layer can be also adjusted by changing the content of butyl titanate. The polypyrrole-sensitized hollow titanium dioxide nanometer photocatalyst disclosed by the invention has better photocatalytic activity, and especially, the response range of lights can be expanded to a visible light area, thus conditions are created for the application of the polypyrrole-sensitized hollow titanium dioxide nanometer photocatalyst to carry out photocatalytic degradation on pollutants by utilizing solar lights in the industry. The polypyrrole-sensitized hollow titanium dioxide nanometer photocatalyst and the preparation method thereof, disclosed by the invention, have the advantages of simplicity in preparation, environment friendliness, economy and suitability, and are favorable for circular economy and sustainable development.

The present invention relates to nanometer organic paint and its preparation process, and is especially one kind of nanometer mesoporous organic silica particle paint and is preparation process. The nanometer mesoporous organic silica particle paint consists of nanometer mesoporous silica particle 2.5-10 wt%, dispersant 0.5-5 wt%, dibutyl phthalate 0-10 wt% and solvent 5-25 wt%, except filming agent. The nanometer mesoporous silica particle may be also modified nanometer mesoporous silica particle. The preparation process includes mixing the said materials, and grinding at normal temperature and normal pressure to disperse to form the mother liquid. The present invention has effectively improved dispersivity of nanometer particle in paint and raised compatibility between inorganic nanometer particle and organic base.

The invention discloses a noble metal palladium deposited-polypyrrole sensitized hollow type titanium dioxide nanometer photocatalyst and a preparation method thereof. The noble metal palladium deposited-polypyrrole sensitized hollow type titanium dioxide nanometer photocatalyst adopts hollow titania microspheres as a carrier for carrying polypyrrole and platinum. The preparation method comprises the following steps in sequence: carrying out glucose-based hydro-thermal synthesis to obtain carbon nanospheres; loading a titanium dioxide film coating onto the surface of the carbon nanospheres through a sol-gel method so as to obtain C / TiO2 microspheres, wherein the carbon nanospheres serve as the template agent; roasting the microspheres to prepare into hollow titanium dioxide nanospheres; loading platinum and polypyrrole on the surface of the hollow titanium dioxide through an in-situ chemical polymerizing method; and transferring to the ultraviolet rays to irradiate, thus obtaining the hollow type titanium dioxide nanometer photocatalyst. The grain size of the hollow type titanium dioxide nanometer photocatalyst can be adjusted, and the thickness of the titanium dioxide coating can be controlled. The noble metal palladium deposited-polypyrrole sensitized hollow type titanium dioxide nanometer photocatalyst is higher in photocatalytic activity; and as shown in UV-vis results, the photo response area is expanded to the visible region, so that the condition is provided for industrially degrading the pollutant through photochemical catalysis under the sunshine.

The invention discloses a preparation method of a noble metal silver deposition-polypyrrole sensitization hollow titanium dioxide nano photocatalyst, which comprises the following steps: hydrothermally synthesizing nano carbon spheres from glucose; by using the carbon spheres as a template, supporting a titanium dioxide film on the surface of the carbon spheres by a sol-gel method to prepare C-titanium dioxide microspheres; calcining the microspheres to prepare hollow titanium dioxide nano microspheres; and supporting metal silver and polypyrrole onto the surface of the hollow titanium dioxide by a chemical in-situ polymerization method to obtain the photocatalyst. The diameter of the prepared microspheres is adjustable, and the thickness of the titanium dioxide layer can be adjusted by changing the content of tetrabutyl titanate. The invention has favorable photocatalysis activity, and the optical response range can be extended to visible light area, thereby creating conditions for industrial photocatalytic degradation of pollutants with sunlight. The invention is simple to prepare, is environment-friendly, and is beneficial to circular economy and sustainable development.

The invention discloses a recoverable float type Pt-TiO2 / floating bead photocatalyst and a preparation method thereof. The carrier of the catalyst is regular cenosphere, and TiO2 with the deposition of Pt is loaded on in a film layer form. The preparation comprises the steps that at a room temperature, defined amount of distilled water is added into a butyl titanate and absolute ethyl alcohol mixed solution, and the mixture is stirred to form a TiO2 sol; the floating beads are taken as the carrier, a titanium dioxide film layer is loaded on the surface through a sol-gel method, and TiO2 / floating bead is prepared after drying and calcination; and TiO2 / floating bead is mixed with a chloroplatinic acid solution, and platinum is loaded to the surface of TiO2 / floating bead through a photodeposition method to obtain the photocatalyst. According to the recoverable float type Pt-TiO2 / floating bead photocatalyst and the preparation method thereof, the particle size of the carrier is adjustable, the thickness of the titanium dioxide layer is controllable, good photocatalytic activity is provided, UV-vis results prove that the photoresponse range is expanded to a visible region, so that conditions are created for photocatalytic degradation of pollutants by using sunlight in industry.

The invention relates to a purification agent and a preparation method of the purification agent, mainly solving the problems of high bulk density, low utilization rate and high industrial application cost of the purification agent in the prior art. The purification agent comprises the following components in percentage by weight: (a) 20-95% of Cu-Zn-Al ternary hydrotalcite; and (b) 5-8% of an adhesive, wherein a hydrotalcite compound is ternary hydrotalcite which comprises bivalent ions Zn<2+> and Cu<2+> and trivalent ions Al<3+>; the molecular structure of the hydrotalcite compound is as follows: [CuyZn (1-x-y)Alx(OH)2](CO3)x / 2.mH2O), wherein x represents the mole ratio of Al / (Zn+Cu+Al) and is 0.2-0.33; the mole ratio of Cu to Zn is 0.1-2; m represents the number of crystal waters and is 2-4. The purification agent can be used for purifying natural gas, synthesis gas and light gas-liquid hydrocarbon.

The invention discloses a fuel oxidation desulfurization catalyst and preparation and application methods of the fuel oxidation desulfurization catalyst. The fuel oxidation desulfurization catalyst isgraphene oxide loaded choline phosphowolframate. Meanwhile, the invention discloses the preparation method of the fuel oxidation desulfurization catalyst. The invention further discloses the method for applying the fuel oxidation desulfurization catalyst to oxidation desulfurization of the fuel. The preparation process of the catalyst is simple, the dibenzothiophene sulfide difficult to remove inthe fuel is effectively reduced, the use level of the catalyst is greatly reduced, the catalyst is not soluble in an extraction agent and is easy to recover, the use ratio of an oxidizing agent is increased, the cost for industrial application is lowered, and the catalyst has an excellent application value in the catalytic oxidation desulfurization of the fuel.

The invention discloses a method for preparing high-purity xylo-oligosaccarides by taking cottonseed hulls as raw materials. In the xylo-oligosaccaride preparation process by taking the cottonseed hulls as the raw materials, the high-temperature steaming time and temperature in the pretreatment process are regulated, the xylose content in steaming liquor is controlled, the xylanase adding amount and the enzymolysis time in the enzymolysis process are controlled, and the xylo-oligosaccarides with the purity larger than or equal to 90 percent are prepared. The method has the advantages that the purity of the prepared xylo-oligosaccarides is larger than or equal to 90 percent, and the separation and purification steps such as membrane separation and moving bed simulation in a traditional high-purity xylo-oligosaccaride preparation technology are omitted; the xylo-oligosaccarides are prepared through the cottonseed hulls, the xylanase adding amount accounts for 0.01%-0.2% of the dry weight of the cottonseed hulls, the enzymolysis time is set for 6-10 h, and the xylanase using amount in the prior art is decreased, and the enzymolysis time in the prior art is shortened. According to the method, the cost is reduced, the efficiency is improved, and the product quality is promoted.

The invention belongs to the technical field of electrochemical energy storage, and provides a charging and discharging control method and a charging and discharging control device for a retired powerbattery set. The retired power battery set comprises more than two retired power battery packs, and the charging and discharging control method comprises the following steps: acquiring operation parameters of each retired power battery pack; classifying and summarizing the operation parameters of the retired power battery packs to obtain battery information of the retired power battery packs; performing power-on start-up and power-off time sequence control on the retired power battery packs according to the battery information; and after the retired power battery packs are powered on and started up, carrying out discharging time sequence control and charging time sequence control respectively on the retired power battery packs according to the battery information so as to realize the balanced discharging and charging process of the retired power battery packs. Therefore, the problem that the retired power battery packs cannot be recycled due to the fact that the charging process and the discharging process of the retired power battery packs cannot be controlled in the traditional technology is effectively solved.

The invention belongs to the technical field of supercapacitor electrode materials, and particularly relates to a porous high-specific capacitance composite electrode material for a supercapacitor anda preparation method thereof. The method particularly comprises the following steps: (1) dihydrogen hexachloroiridate (H2IrCl6.6H2O containing 35 wt% of iridium) and manganese chloride (MnCl2) are taken to be dissolved in ethanol at a certain metal molar ratio; (2) an appropriate amount of carbon nanotubes is taken to be added to a mixed solution of H2IrCl6.6H2O and MnCl2; and (3) an appropriateamount of coating is taken to perform single-sided coating on a titanium plate, and an IrO2-MnO2-CNT / Ti electrode with a different carbon nanotube content is obtained. According to the composite electrode material prepared by the invention, the capacitance performance of the electrode can be effectively improved through adding an appropriate amount of carbon nanotubes, and the capacitance performance reaches the best when the amount of carbon nanotubes added is 5 mg / ml.

An organic protecting paint with low content of Ti nanoparticles is prepared from Ti nanoparticles (0.05-5 wt.%), disperser (0.5-5), dibutyl phthalate (0-10), solvent (5-25) and filming substance (rest) through sequential mixing, and grinding.

The invention relates to a sulfur-arsenic purifying agent and application thereof, aiming at solving the problems that the sulfur-arsenic purifying agent in the prior art has high bulk density, low sulfur capacity and arsenic capacity and has high industrial application cost. The sulfur-arsenic purifying agent is prepared from the following components in percentage by weight: (a) 20-75% of hydrotalcite-like compound; (b) 20-75% of aurichalcite; and (c) 1-10% of basic cupric carbonate. The sulfur-arsenic purifying agent can solve the problem well and can be applied to purification of natural gas, synthesis gas, light gas-liquid hydrocarbons and the like.

The invention relates to the technical field of environmental catalytic purification, and relates to a highly stable hollow molecular sieve used for removing ammonia pollution generated in industrialand transportation processes, a selective catalyst prepared by utilizing the hollow molecular sieve and an application thereof. The hollow molecular sieve is obtained by hydrothermal alkali dissolution treatment of a molecular sieve, wherein the molecular sieve is ZSM-5, HY, Beta, or SAPO-34. A catalyst carrier is the hollow molecular sieve. An active component is silver. The carrier is prepared by hydrothermal alkali dissolution post-treatment. The active component, silver, is encapsulated in the hollow molecular sieve carrier through a vacuum rotating impregnation method. The prepared catalyst has high activity at low temperature. NH3 can be completely converted at low temperature up to 140 DEG C, and the N2 selectivity is 85% or above. The stability is high, and the industrial application prospect is wide.

The invention belongs to the field of nano materials, and particularly relates to a preparation method of coal-based graphene in a molten salt system. In order to obtain graphene with a high added value and the preparation method is green, environment-friendly and low in cost, coal with a disordered structure is converted into graphene with a regular and ordered structure by utilizing the affinity of a molten salt system and a carbon material, intercalation exfoliation of metal ions and the catalytic action of a transition metal-based catalyst, and the graphene with a high added value is obtained. The method is green, environment-friendly, simple and easy to implement and suitable for large-scale industrial application, and the prepared graphene is few in structural defect and high in purity.

The invention discloses a metal composite molecular sieve material for adsorption-catalytic oxidation of VOCs and a preparation method and application thereof. The method comprises the following steps: dissolving a molecular sieve in water, and dipping or photodepositing a metal precursor on the molecular sieve to prepare the metal composite molecular sieve material for adsorption-catalytic oxidation of VOCs. The prepared material can efficiently adsorb, capture and concentrate VOCs in waste gas, captured organic matter is catalytically oxidized into H2O and CO2 at the metal active center position, adsorption-catalytic oxidation integration is achieved, and thus the purpose of degrading low-concentration VOCs in waste gas is achieved. Compared with an existing VOCs purification material, the material has the advantages of high adsorption performance, high activity, high selectivity and the like. The prepared material can be widely applied to the field of atmospheric pollution control of industrial conventional organic waste gas, industrial organic waste gas containing NO, NH3 and SO2, organic waste gas in coal-fired flue gas and the like.

The invention discloses a hyperboloid isotropic parallel mechanism global optimization design method. A hyperboloid parallel mechanism is adopted, limits on load inertia parameters are eliminated, and complete isotropy is realized. On the basis, global modal sensitivity indexes used for measuring global work space modal changing degrees are proposed and serve as optimizing targets, and specific parameter design of the parallel mechanism is realized by optimizing structural parameters. By the aid of the parallel mechanism, complete decoupling and dynamic isotropy of a control center are realized, and optimal performances of the global work space inside are guaranteed. By the aid of the method, defects that a conventional six-degree-of-freedom parallel mechanism cannot realize complete isotropy are eliminated, complete decoupling and excellent dynamic features of the parallel mechanism are realized, complex control strategies are not required to research for improving control performances in industrial applications, and industrial application cost is reduced.

The invention discloses a preparation method of trans-4-substituted cyclohexyl formaldehyde, which is characterized by including steps of reacting trans-4-substituted cyclohexyl methanoic acid and oxalyl chloride under the condition of catalyst I and preparing trans-4-substituted cyclohexyl formyl chloride; performing hydrogen reduction reaction in the presence of palladium catalyst II, promoter III, promoter IV; preparing the trans-4-substituted cyclohexyl formaldehyde. The design is reasonable in reaction route and matured in technical condition; the reaction process of the modular preparation route is green and environment-friendly, and good for industrial production; the prepared product has high quality, the gas chromatography purity of the product is over 99.9%; a monomer liquid crystal material compounded by a midbody is good in quality and able to completely adapt to the need of TN-LCD, STN-LCD, and TFT-LCD.

The invention discloses a method for preparing a catalyst that catalyzes the oxidation of ammonia (NH3), and belongs to the field of environmentally friendly catalysis technology. The chemical vapor deposition method is used to prepare a nanocomposite carrier of titanium dioxide and carbon (TiO2-C), and the active component is a transition metal. Copper and cobalt, the active components are loaded onto the TiO2-C composite carrier through ultrasonic impregnation. The raw materials used in the present invention are non-toxic, harmless and cheap, and the catalyst has good low-temperature catalytic activity, stability and product selectivity. Using this The catalyst prepared by the method can effectively realize low-temperature selective catalytic oxidation of NH3. The catalytic products are N2 and H2O, without secondary pollution, and can be widely used to treat NH3-containing waste gas generated in industry, agriculture, construction and other processes.

The invention provides a built-in electromagnetic stirring melt processing device, and relates to the technical field of metal material processing. The built-in electromagnetic stirring melt processing device comprises a device shell, a temperature control device and an electromagnetic stirring generation device, wherein the temperature control device comprises a first cooling medium channel and / or a second cooling medium channel, the first cooling medium channel is arranged outside the device shell, and the second cooling medium channel communicates with an inner cavity of the device shell; and the electromagnetic stirring generation device is arranged in the inner cavity of the device shell. According to the technical scheme, the internal heat dissipation area and the nucleation substrate area of an alloy melt can be effectively increased, finally, the melt with a temperature field and a component field which are distributed very uniformly is obtained, the melt is promoted to generate a large number of crystal nucleuses at the initial stage of solidification instantly and successfully survive in the melt, and a solidification structure with a fine and round grain structure and uniform components can be obtained.

The invention relates to the technical field of environmental catalytic purification, and relates to a highly stable hollow molecular sieve used for removing ammonia pollution generated in industrialand transportation processes, a selective catalyst prepared by utilizing the hollow molecular sieve and an application thereof. The hollow molecular sieve is obtained by hydrothermal alkali dissolution treatment of a molecular sieve, wherein the molecular sieve is ZSM-5, HY, Beta, or SAPO-34. A catalyst carrier is the hollow molecular sieve. An active component is silver. The carrier is prepared by hydrothermal alkali dissolution post-treatment. The active component, silver, is encapsulated in the hollow molecular sieve carrier through a vacuum rotating impregnation method. The prepared catalyst has high activity at low temperature. NH3 can be completely converted at low temperature up to 140 DEG C, and the N2 selectivity is 85% or above. The stability is high, and the industrial application prospect is wide.

The invention discloses an acetic acid hydrogenation catalyst as well as a preparation method and application thereof. The structural composition expression of the catalyst is Ni-MCM-AE, wherein AE represents active metal components Au and Eu, and Ni-MCM represents an MCM-41 molecular sieve modified by metal Ni. According to the invention, strong-acid-resistant Au and Eu are used as catalyst active aids, so that the acid resistance and catalytic activity of the catalyst are improved; the active component Ni is distributed in pore channels of the modified molecular sieve through in-situ synthesis, the acid resistance is higher, the active component Ni is not prone to falling off, the active component Ni and Au and Eu components distributed on the surface of the molecular sieve can form a two-stage hydrogenation effect, the catalytic efficiency and the reaction conversion rate are improved, a hydrogenation product is prepared at high conversion rate and high selectivity, and the catalyst is stable in structure and low in cost. And the recycling period is prolonged, and the industrial application cost is saved.

The invention discloses application of acetic anhydride serving as acyl donor to participation in DBAT (deacetyl baccatin acetyloxy transferase) enzymatic reaction, and belongs to the field of biomolecular catalysis. The acetic anhydride can serve as the acyl donor to replace an expensive natural substrate acetyl CoA to participate in DBAT enzymatic reaction; when the acetic anhydride serving as the acyl donor to participate in the enzymatic reaction, the enzyme activity of DBAT is increased by 2.2 times compared with that of the acetyl CoA; and important significance in subsequent baccatin III and taxol in-vitro enzymatic synthesis as well as application in a taxol anabolic synthesis channel is achieved, the industrial application cost can be greatly reduced and great economic value is brought.