75results about How to "Change adsorption" patented technology

The invention discloses a method for preparing a catalyst for treating high-concentration organic wastewater through catalytic oxidation, which comprises the following steps: 1) drying a cocoanut active charcoal at a temperature of between 100 and 120 DEG C for 8 to 15 hours, taking out and adding the cocoanut active charcoal into 2 to 10 percent sulfuric acid solution to perform soakage for 12 to 36 hours, adding the cocoanut active charcoal into a 1 to 10 percent oxydol solution to perform soakage for 12 to 36 hours, taking the cocoanut active charcoal out, and draying the cocoanut active charcoal in shade to obtain an activated charcoal for standby; and 2) soaking constant volume of the activated charcoal into transition metal salt solution for 12 to 36 hours, drying the activated charcoal at a temperature of between 100 and 120 DEG C for 8 to 15 hours, and calcining the activated charcoal at a temperature of between 300 and 650 DEG C for 3 to 8 hours to obtain the catalyst for treating the high-concentration organic wastewater through the catalytic oxidation. The service life of an active charcoal catalyst bed prepared by the method can reach over 0.5 to 1 year. After the treatment of the wastewater, compared with a Fenton reagent, the treatment efficiency of the catalyst is improved obviously, and the treatment cost is reduced by about 20 percent.

The invention is a cutting and coating method for surface physical and chemical structure of nano particles. Through confecting the radio frequency plasma to control pulse ratio, time, power, and furthermore control the kind, content, sediment layer thickness the coarse rate of packing film of functional group, it can cut and coat the special monomer molecular functional group film on the surface of the nano particles, and adjusts the thickness, surface coarse rate and so on, gets the coating film with special physical and chemical structure, changes the physical and chemical structure of nano particles.

The invention provides a mercaptan removal catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier, an active component and an oxidizing auxiliary agent heteropoly acid, wherein the carrier is composed of alumina and a rare earth element-modified molecular sieve; the active component is one or more of group IA, IIA, IB, IIB, VIIB or VIII metal oxide. The catalyst provided by the invention can change a pore structure and the adsorption performance of the molecular sieve by modifying the molecular sieve, and enhance the chemical adsorption capacity of the catalyst carrier to the mercaptan so as to be more favorable for adsorbing the mercaptan; meanwhile, the catalyst provided by the invention oxidizes the mercaptan into corresponding disulfide by using the strong oxidizing property of the heteropoly acid and then is adsorbed by the composite carrier, thereby allowing the mercaptan removal catalyst provided by the invention to remove the mercaptan without hydrogenation while reducing the total sulfur content, and achieving the purpose of thoroughly and effectively removing the mercaptan.

A process for preparing the danshensu sodium from the alkaline liquid extract of red sage root includes such steps as adsorbing by weak-polarity resin, eluting, regulating pH value, acidic adsorbing by weak-polarity resin, eluting, concentrating, adding alkali, cooling, laying aside to obtain danshensu sodium crystals, filter, washing and drying.

The invention relates to a selective hydrogenation catalyst for C5 fraction cracking and belongs to the technology field of hydrogenation catalysts. In order to meet the urgent need of the selective hydrogenation catalysts for the C5 fraction cracking, the invention provides a catalyst for selective hydrogenation in the C5 fraction cracking, which contains the following components in the given mass percentages: Ni 10-35%, La 0.5-3%, Ag 0.3-3% and aluminum oxide carrier 59-89.2%, calculated on basis of the total mass of the catalyst. The catalyst can also contains K and/or Sr or Pb. The catalyst is used for selective hydrogenation in the C5 fraction cracking as well as hydrogenation in the C5 fraction cracking and excellent in conversion rate, selectivity and stability.

The invention relates to the technical field of resin materials, in particular to a novel sulfonated melamine-formaldehyde resin and a preparation method thereof. The raw materials of the sulfonated melamine-formaldehyde resin include modified melamine, formaldehyde, sodium metabisulfite, sulfuric acid, saturated calcium hydroxide, sodium hydroxide and water. Melamine can be replaced by modified melamine. When melamine is modified with lauryl alcohol Jinxin, its molecular weight can be increased, its production cost can be reduced, and thus it can be mass-produced.

The invention relates to a active carbon desulphurization adsorbent loaded with cobalt phthalocyanine sulfonate and a preparation method thereof, and mainly solves problems that sulfur removal rate is low, and breakthrough sulfur capacity of desulfurizer is low in existing gas adsorption, desulphurization and purification technology. In the invention cobalt phthalocyanine sulfonate is employed as active ingredient and a small amount of phosphor is added for modifying the active carbon. In this way, the solid adsorbent is obtained. The problems of low sulfur removal rate, etc. are solved. The desulphurization adsorbent of the invention can be used in adsorption and purification of gas materials for removal of sulfur-containing compound.

The invention discloses a sulfur-containing non-noble metal salt doped hollow nanometer metal organic framework material, and a preparation method and an application thereof. The preparation method comprises the following preparation steps: 1) preparation of a metal organic framework material precursor; 2) preparation of a sulfur-containing non-noble metal salt solution; 3) doping of a sulfur-containing non-noble metal salt solution; and 4) pyrolysis preparation of the sulfur-containing non-noble metal salt doped hollow nanometer metal organic framework material. According to the invention, the process flow is simple; the reaction process is easy to be controlled; a template does not need to be introduced in the preparation process; and by introduction of sulfur-containing non-noble metalsalt doping as an excellent cocatalyst, the sulfur-containing non-noble metal salt is highly dispersed in micropores of an original single-crystal metal organic framework structure, and original metalconnecting elements are replaced in the pyrolysis process, so the electronic state and the adsorption property of the surfaces of noble metal particles are changed, and the purpose of improving the catalytic performance is achieved.

The invention relates to a cerium-tin-zirconium composite oxide catalyst, a preparation method and an application thereof. The catalyst has the following chemical composition: CeSn _a Zr ₂ o _x , a ranges from 0 to 2.0 and does not include 0. The addition of Sn promotes the synergy between Sn, Ce, and Zr, changes the adsorption performance of the catalyst to the reactants, and makes the redox process of the catalyst easier to complete, thereby increasing the NO _x removal efficiency. The CeSn _a Zr ₂ o _x The catalyst activity is significantly improved, and the temperature window is also significantly widened. The cerium-tin-zirconium composite oxide catalyst has excellent NH ₃ - SCR activity.

The invention belongs to the technical field of materials and environments, and discloses a method for preparing a titanium dioxide catalyst with selectively deposited platinoid alloy granules. The method comprises the following steps: by adopting HF (Hydrofluoric Acid) as an end-capping reagent, preparing {101} and {001} double-crystal surface exposed titanium dioxide crystal powder by using a solvent thermal method; putting the titanium dioxide crystal powder into a 0-10mol/L sodium hydroxide solution, stirring for 0-5 hours, and performing centrifugal separation and water washing drying on solid substances in the solution so as to obtain light blue powder; dispersing the light blue powder, copper nitrate and chloroplatinic acid powder in deionized water so as to obtain a mixed liquid, stirring the mixed liquid for 12 hours at a temperature of 80 DEG C, and performing evaporation drying till black powder is prepared; calcining the black powder in an air environment, and calcining in hydrogen flow, so as to obtain the titanium dioxide catalyst with the selectively deposited platinoid alloy granules.

The invention relates to an oil-water separation system with efficient electromagnetic synchronous cooperation, comprising a reinforced coalescing device and a precipitating separating device and characterized in that a drain pipe liquid distributor is arranged at the inner bottom of the precipitating separating device, the reinforced coalescing device is provided with an electromagnetic coalescing component, a liquid-distributing orifice plate is arranged between an inlet head and the electromagnetic coalescing device, the electromagnetic coalescing component includes an electric field generating component and a magnetic field exciting component which are in coaxial distribution; an electric field and a magnetic field are orthogonally distributed to arrive at synchronous cooperation. Theelectric field generating component includes a grounding external electrode and an axial electrode coated with an insulating sleeve, allowing electric field intensity to be increased to 350 kV/m; themagnetic field exciting component includes outer and inner coils coaxially and hermetically sleeving the external electrode, the outer coil is greater than the inner coil in the number of turns, and the outer coil and the inner coil are contained in a self-circulating cooling sleeve. The oil-water separation system has the advantages that oil-water separation efficiency is significantly improved,oil-water separation range is significantly widened, the system is capable of treating oil-water emulsions having a water content of up to 40%, and therefore, the system is widely applicable to efficient and stable equipment and facilities for oil-water separation on land and sea.

The invention discloses a mudstone hydrophobically modified grouting material and a preparation method thereof, and belongs to the technical field of underground engineering safety. The hydrophobically modified grouting material is prepared from, by weight, 40-50 parts of ordinary Portland cement, 5-10 parts of water-quenched slag, 10-20 parts of coal gangue powder, 2-3 parts of a water reducing agent, 50-70 parts of a surfactant solution and 5-8 parts of water glass. All the components are mixed in sequence to prepare the grouting material. The grouting material can enhance the water resistance of mudstone surrounding rock, reduce the water absorption expansion of the surrounding rock, improve the filling effect and enhance the compression resistance, and meanwhile, the influence of industrial solid wastes on the environment is reduced by utilizing the water-quenched slag and the coal gangue powder.

The invention relates to a mechanical part installed on a liquid passing pipeline, in particular to a clamping tool with the magnetism and a monitoring device adopting the clamping tool. The clamping tool comprises a clamping part matched with a pipeline, the clamping part is provided with at least one sliding groove, and magnetic devices used for attracting metal impurities in the pipeline are arranged in the sliding grooves and can slide along the sliding grooves. When the clamping part clamps the pipeline, the magnetic devices on the clamping part can attract the metal impurities in the pipeline, therefore, the metal impurities are accumulated at the position, corresponding to the clamping range of the clamping part, of the pipeline, it is guaranteed that liquid passing through the clamping range of the clamping part does not contain the metal impurities any more, the metal impurities are prevented from entering the monitoring device which utilizes the magnetic principle and is arranged on the pipeline, and therefore accurate working of the monitoring device is guaranteed.

The invention discloses waterborne acrylic resin capable of absorbing and degrading formaldehyde. The waterborne acrylic resin capable of absorbing and degrading formaldehyde is prepared by physicallymixing waterborne acrylic acid emulsion prepared by alkyl methacrylate, alkyl acrylate, alkyl carboxylic acid, a crosslinking agent, an initiator and an emulsifier with an aldehyde auxiliary agent. The invention also discloses a preparation method of the waterborne acrylic resin capable of absorbing and degrading formaldehyde. A cross-linking type functional monomer with internal plasticization is introduced into the emulsion of the invention. The prepared emulsion has good film forming property, can be used for preparing waterborne acrylic acid paint for chemically absorbing and degrading formaldehyde and can meet the requirements of functional paint, and a formed film has high density and hardness.

The invention discloses a preparation method of beef proteins with high adsorption property to flavor components. The method comprises the following steps: (1) removing impurities from fresh beef, dicing and mincing; (2) degreasing beef samples to obtain crude beef proteins; (3) performing pulse microwave treatment on the extracted crude beef proteins, wherein the output power of the pulse microwaves is 20-500W, the microwave output duty ratio is 5-60%, the pulse width is 10-100ms, the frequency is 2400-2500MHz, the phase is 0-180 degrees, and the pulse microwave treatment time is 5-100seconds; and (4) performing vacuum freeze drying, grinding into powder, and screening, thereby obtaining the beef proteins with high adsorption property to flavor components. According to the beef proteins prepared by the method disclosed by the invention, the adsorption capacity of flavoring compounds can be wholly improved by 20-50%.

The invention discloses an N, S co-doped porous carbon coated carbon nanotube bifunctional oxygen electrode catalyst and a preparation method thereof, and belongs to the technical field of energy materials and electrochemistry. The preparation method comprises the following steps of: dispersing a polysulfide precursor into a solvent, transferring an obtained mixture into a reaction container, andreacting at 50-300 DEG C to obtain a polysulfide precursor material; preparing a precursor of the N, S co-doped porous carbon coated CNT catalyst; and finally, putting the obtained NSC-CNT-Px materialinto a reaction furnace, heating to 600-1200 DEG C, and carrying out heat treatment to obtain the N, S co-doped porous carbon coated CNT catalyst. The catalyst prepared by the invention has a large number of pores and a high specific surface area, is beneficial to improving the ORR/OER catalytic activity of a material, is simple in preparation process, is green and pollution-free, is easy for large-scale production, and is beneficial to large-scale application.

The invention provides a modified lanthanide-series-metal organic framework material and a preparation method thereof. The modified lanthanide-series-metal organic framework material comprises a lanthanide-series-metal organic framework material and a palladium catalyst, wherein the palladium catalyst accounts for 0.1-1% of the total mass of the raw materials when being counted by palladium. The modified lanthanide-series-metal organic framework material has the advantages that the palladium is introduced into the metal organic framework of the modified lanthanide-series-metal organic framework material, the absorption process of hydrogen in the framework is changed, and room-temperature hydrogen storage quantity is increased.