36results about How to "Efficient Adsorption Separation" patented technology

The invention belongs to the technical field of material preparation and separation, and relates to preparation of lithium / rubidium ion adsorbing materials, in particular to a preparation method and application of a modified hollow mesoporous silicon sphere adsorbent. Hollow mesoporous silicon spheres (HSs) are synthesized, a manganese-based lithium ion sieve (HMO) is supported on the surface of the hollow mesoporous silicon spheres (HS), and finally, 3-aminopropyltriethoxysilane (APTES) is modified to form the modified hollow mesoporous silicon sphere adsorbent. Synthetic process steps are simple, the prepared micro-nano hollow mesoporous silicon spheres have the advantages of large specific surface area, modifiable surface hydroxyl, good mono-dispersity, good particle size and duct size adjustability and the like, the surface of the micro-nano hollow mesoporous silicon spheres with a high specific surface is modified, and the adsorbing capacity of the materials is greatly improved. The manganese-based lithium ion sieve and the APTES are compounded with the micro-nano hollow mesoporous silicon spheres to obtain the modified hollow mesoporous silicon sphere adsorbent with unique physical and chemical properties, and lithium / rubidium ions can be efficiently adsorbed and separated in a high-selectivity manner.

The invention belongs to the field of a material preparation technology and a separation technology, discloses a preparation method of a nano-structure composite adsorption material, and particularly discloses a preparation method of a novel lanthanum nitrate modified mesoporous silicon material, and application of the novel lanthanum nitrate modified mesoporous silicon material to selectively adsorbing phosphate ions. In the method for preparing the composite modified material, lanthanum nitrate is taken as a modification ligand and mesoporous silicon with a large specific surface area is taken as a supporting material; the nano-structure composite adsorption material prepared by adopting the method has a performance for selectively adsorbing and separating the phosphate ions in wastewater. A result shows that the modified mesoporous silicon material provided by the invention has an excellent performance on selectively adsorbing the phosphate ions.

The invention provides a preparation method and application of a novel hierarchical pore composite material. According to the material, a hierarchical pore material is prepared from cotton as a raw material by adopting cellulose nanocrystallines and CTAB as two mold plates, and then the hierarchical pore material is subjected to modifying by using lanthanum nitrate to prepare the novel hierarchical pore composite material. According to the method, the hierarchical pore composite material with the high surface area is prepared by adopting cotton hydrolysis products and the CTAB as the mold plates, the composite material has a continuous controllable hole structure, and further the composite material is subjected to modifying by using the lanthanum nitrate, so that the relatively high adsorption performance is realized, and phosphorus with the low concentration in environments can be adsorbed.

The invention discloses a preparation method of a TiO2 / PAN nanofiber membrane. The method comprises the specific preparation steps that polyacrylonitrile powder is dissolved to obtain a polymer solution; TiO2 nanocrystals are dispersed in the polymer solution to obtain a spinning solution; the spinning solution is sucked into a syringe, the syringe is fixed on an injection pump of electrospinningequipment, a spinneret is connected to a positive electrode of a high-voltage power supply at the same time, a receiving plate is connected to a negative electrode of the high-voltage power supply andcovered with aluminum foil, and electrospinning is conducted to obtain the TiO2 / PAN nanofiber membrane. The preparation method is easy to operate, short in process flow and suitable for wide popularization and application, and meanwhile further has excellent catalytic and mechanical properties and broad application prospects.

The invention relates to a sponge containing bamboo charcoal composition and the process for preparation, wherein the sponge comprises 10-60% of bamboo charcoal, the preparing process comprises making bamboo charcoal powder, mixing with sponge raw material, mixing and placing into die arrangement, carrying out foaming formation, finally cooling down and demoulding.

The invention relates to a method for absorbing and separating a human prothrombin complex by utilizing an expansion bed, comprising the following steps: (a) separating cryoprecitation from melted refrigerated plasma by using a refrigeration type continuous flow centrifuge, and collecting supernate as a raw material; (b) carrying out stable expansion on an expansion bed by using a buffer solution A, wherein the buffer solution A is 0.05mol / L1tris-citric acid with the PH value of 7.0; (c) rapidly switching into a feed solution after the expansion bed is in stable balance, stopping feeding and rapidly switching into the buffer solution A when breakthrough points reaches 5-10%, and washing in an expanded mode; and (d) switching into buffer solutions of 0.4mol / L NaCl and 1.6mol / L NaCl after washing, carrying out gradient elution in a stationary bed mode, and collecting the protein elution peak of the buffer solution of 1.6mol / L NaCl to obtain a prothrombin complex crude product.

The invention belongs to the technical field of metal organic skeleton materials, and discloses a temperature-sensitive metal organic skeleton material, a preparation method, and applications thereof. In the preparation method, copper perchlorate, pyrazine, and pyrazine-2,3-dicarboxylic acid (double organic ligands) are stirred in a solvent at a room temperature to prepare the temperature-sensitive metal organic skeleton material. The temperature-sensitive metal organic skeleton material has a flexible skeleton structure, which can generate skeleton swelling absorption. The temperature-sensitive metal organic skeleton material has different swelling conversion pressures on alkene and alkane, so the temperature-sensitive metal organic skeleton material has a high selectivity on alkene and alkane, can carry out skeleton structure swelling absorption on alkene at the temperature of 273 K, and carry out skeleton structure contraction desorption at the temperature of 298 K, and thus desorption regeneration is easy for the skeleton material. The temperature-sensitive metal organic skeleton material can be used as an efficient energy-saving absorption separating material in the field of alkene / alkane separation and has a vast application prospect.

The invention provides a nanofiber foam based oil gas trapping device and a preparation method thereof. The nanofiber foam based oil gas trapping device is characterized in that: it includes an gas collection pump in connection with a gas delivery pipe, the gas delivery pipe is connected to an oil-gas trapping assembly, the oil-gas trapping assembly is connected to an exhaust pipe and a collection pipe, and the collection pipe is connected to an oil substance recycling bin. Specifically, the oil-gas trapping assembly includes a protective box, and the protective box is internally provided with a nanofiber based foam material. The nanofiber foam based oil gas trapping device has the characteristics of simple preparation process, low cost, convenient operation, integrated oil-gas adsorption recovery, high efficiency and continuity, and has wide application at gas stations, oil plants, wharfs and other sites, and in manufacturing industry, surface coating industry and other fields.

Belonging to the technical field of adsorption separation of nicotinamide and nicotinic acid, the invention provides a preparation method and application of zirconium based metal-organic frameworks, and solves the technical problem of difficult adsorption separation of nicotinamide and nicotinic acid by existing conventional separation method. The zirconium based metal-organic frameworks DUT-67 disclosed by the invention is synthesized by solvothermal method, the chemical formula of the zirconium based metal-organic frameworks DUT-67 is Zr6O6(OH)2(tdc)4.3.1H2O.0.6DMF, with certain pore structure and unique binding site, the zirconium based metal-organic frameworks DUT-67 can achieve rapid selective adsorption separation of nicotinamide and nicotinic acid, the separation effect is obvious and the operation process is simple, the utilization rate of nicotinamide and nicotinic acid can be effectively enhanced, and the economic benefits can be improved.

The invention relates to a 3D chitosan / silicon dioxide composite material and a preparation method and application thereof in rhenium adsorption and separation. A one-step rapid microwave-assisted synthesis method is adopted, P123 is used as a template, sodium silicate is used as a silicon source, chitosan is added in the hydrolytic condensation process of the sodium silicate, Si-OH is combined with -OH and -NH2 on the chitosan under the action of a covalent bond and a hydrogen bond, then glutaraldehyde is added as a cross-linking agent, the chitosan and mesoporous silica are compounded, and the 3D chitosan / silicon dioxide composite material is obtained. The preparation raw materials are biomass materials which are low in price and easy to obtain, the preparation process is simple, the synthesis speed is high, the time is short, the Re(VII) adsorption rate in high-concentration Cu(II) simulated feed liquid is high, the rhenium adsorption rate can reach 96.67% when the pH value is 4, the maximum saturation adsorption capacity is 261.81 mg*g<-1>, and effective separation of the rare and scattered metal element Re (VII) can be achieved.

The invention discloses a coking desulfurization waste liquid pretreatment device belonging to the technical field of coking desulfurization waste liquid treatment equipment and being used for rapidly removing sulphur and pigment in a coking desulfurization waste liquid. The technical scheme is as follows: a liquid inlet pipeline of a pressure pump and a liquid inlet pipeline of a water jet machine are respectively connected with a liquid outlet of a flotation tank; a liquid outlet pipeline of the pressure pump and a liquid outlet pipeline of the water jet machine are respectively connected with a liquid inlet of a dissolved air tank; a liquid outlet pipeline of the dissolved air tank is connected with the floatation tank; an infusion pipeline of a dosing tank is connected with the flotation tank through a dosing pump; and a sediment scraper is arranged on the flotation tank. According to the invention, the desulfurization waste liquid containing a surfactant is pressurized and subjected to air dissolution and is released at reduced pressure through an aeration head, then, air bubbles formed by the surfactant can be used for efficiently adsorbing and separating organic matters, suspended solids and metal ions, and dross can be removed by the sediment scraper, so that the aim for pre-treating the waste liquid is achieved. The coking desulfurization waste liquid pretreatment device is low in byproduct yield and capable of avoiding generating a great number of active carbon wastes in an active carbon decoloring technology, and has the advantages of simple structure and good use effect.

The present invention relates to a kind of shoes, in the concrete, it is a kind of bamboo charcoal anti-bacterial odor destroying shoes. It is formed from sole and upper, said sole is formed from major sole, insole and pad sole which are mutually glued together, and its is characterized by that between pad sole and insole a sole sandwich layer made of bamboo charcoal is set also, and the described upper is composed of instep and liner, between both them also is set an upper sandwich layer made of bamboo charcoal.

The invention provides a hyper-crosslinked resin and its application in adsorption separation of 5-hydroxymethylfurfural. A preparation method for the hyper-cross-linked resin comprises the following steps: S1, mixing an ester monomer, a cross-linking agent, an initiator and a pore forming agent, adding the formed mixture into an aqueous phase containing a dispersing agent, and performing suspension polymerization to obtain precursor resin; and S2, adding a swelling agent and a Lewis acid catalyst into the precursor resin, and performing a post-crosslinking reaction of a suspended double bond to obtain post-crosslinked resin, wherein the ester monomer is one or more selected from the group consisting of ethyl acrylate, butyl acrylate, triethylene glycol dimethacrylate, ethylene glycol dimethacrylate, ethylene glycol diacrylate, methyl methacrylate , glycidyl methacrylate and hydroxyethyl acrylate. The hyper-crosslinked resin provided by the invention has a BET specific surface area of 400 to 1200 m<2> / g, a pore volume of 0.1 to 2.5 cm<3> / g, and an average pore size of 1 to 20 nm.

The invention relates to preparation of a lithium ion adsorption material, especially to a preparation method for a 2-hydroxymethyl-12-crown 4-ether modified hierarchically-porous silicon material, belonging to the technical field of synthesis of composite materials. The preparation method comprises the following steps: preparing nanocrystal cellulose at first; then with nanocrystal cellulose as a hard template and cetyl trimethyl ammonium bromide as a soft template, preparing a hierarchically-porous silicon material by using a template process; and then modifying the hierarchically-porous silicon material with 2-hydroxymethyl-12-crown 4-ether. The invention also discloses application of the modified hierarchically-porous silicon material to adsorption of alkali metal ions, especially to adsorption of lithium ions in salt lake bittern. According to the invention, the hierarchically-porous material with a high specific surface is employed, so the adsorption capacity of the modified hierarchically-porous silicon material is greatly improved; and the preparation process is simple and easy to operate. The lithium ion adsorption material prepared in the invention can realize high-efficiency high-selectivity adsorption and separation of alkali metal ions, especially lithium ions, and provides a feasible solution to sustainable development of the industry of extraction of lithium from a salt lake.

The invention discloses a carbon-based asymmetric double-crown supermolecule hybrid material, which is prepared by directionally polymerizing calix [4]arene-crown-6-(benzyl methacrylate)crown-6 onto the inner and outer hole walls of a millimeter-sized macroporous-mesoporous carbon sphere, wherein the structural formula of the calix [4]arene-crown-6-(benzyl methacrylate)crown-6 is shown in the specification. The invention also discloses a preparation method of the carbon-based asymmetric double-crown supermolecule hybrid material, the preparation method is simple, and the obtained carbon-basedasymmetric double-crown supermolecule hybrid material can be used for adsorbing and separating radionuclide Cs and has excellent adsorption and separation effects.

The present invention discloses a method for extracting biological products by reverse adsorption. A macroporous adsorption resin is used, a reverse column adsorption manner is used to directly extract weakly polar or non-polar products from biological product liquid containing cells and mycelial fragments, and besides, the extracted products has high purity. The method overcomes a series of disadvantages caused by use of organic solvent extraction in extraction of traditional biological products and also resolves contradiction of strict requirements for column liquid in traditional resin separation. The method is simple in technical processes, has strong selective adsorbability for the products, enables the products to be good in quality, and produces less production waste; and at the same time, online extraction and continuous production of some biological products are realized.

The invention belongs to the technical field of material preparation and separation, and relates to preparation of lithium / rubidium ion adsorbing materials, in particular to a preparation method and application of a modified hollow mesoporous silicon sphere adsorbent. Hollow mesoporous silicon spheres (HSs) are synthesized, a manganese-based lithium ion sieve (HMO) is supported on the surface of the hollow mesoporous silicon spheres (HS), and finally, 3-aminopropyltriethoxysilane (APTES) is modified to form the modified hollow mesoporous silicon sphere adsorbent. Synthetic process steps are simple, the prepared micro-nano hollow mesoporous silicon spheres have the advantages of large specific surface area, modifiable surface hydroxyl, good mono-dispersity, good particle size and duct size adjustability and the like, the surface of the micro-nano hollow mesoporous silicon spheres with a high specific surface is modified, and the adsorbing capacity of the materials is greatly improved. The manganese-based lithium ion sieve and the APTES are compounded with the micro-nano hollow mesoporous silicon spheres to obtain the modified hollow mesoporous silicon sphere adsorbent with unique physical and chemical properties, and lithium / rubidium ions can be efficiently adsorbed and separated in a high-selectivity manner.

The invention discloses a carbon-based asymmetric naphthalene-containing double-crown supramolecular hybrid material. The material is prepared by directionally polymerizing calix[4]arene-(naphtho)crown-6-(benzyl methacrylate)crown-6 to inner and outer pore walls of millimeter-scale macroporous-mesoporous carbon spheres, and the structural formula of the calix[4]arene-(naphtho)crown-6-(benzyl methacrylate)crown-6 is as the follows. The invention discloses a preparation method of the carbon-based asymmetric naphthalene-containing double-crown supramolecular hybrid material. The preparation method is simple, and the obtained carbon-based asymmetric naphthalene-containing double-crown supramolecular hybrid material can be used for adsorbing and separating radionuclide Cs in high level liquid waste and has an excellent adsorption separation effect.

The invention discloses a millimeter-scale macroporous-mesoporous carbon sphere / cup [4]-double crown-6 interpenetrating composite material which is obtained by directionally polymerizing cup [4] arene-(benzo) crown-6-(phenylmethyl methacrylate) crown-6 to the inner surface and the outer surface of a millimeter-scale macroporous-mesoporous carbon sphere. The structural formula of the cup [4] arene-(benzo) crown-6-(phenylmethyl methacrylate) crown-6 is shown in the specification. The invention further discloses a preparation method of the millimeter-scale macroporous-mesoporous carbon sphere / cup[4]-double crown-6 interpenetrating composite material, the preparation method is simple, and the obtained millimeter-scale macroporous-mesoporous carbon sphere / cup [4]-double crown-6 interpenetrating composite material can be used for adsorbing and separating radionuclide Cs and is excellent in adsorption and separation effect.

This invention relates to a method for preparing magnetic iron oxide / nanoscale zeolite molecular sieve composite. The method comprises: (1) selecting nanoscale zeolite crystal material; (2) introducing Fe2+ / Fe3+ as active reaction sites through ion exchange under the action of electrostatic attraction; (3) dropping 25% ammonia solution for reaction of the active sites in an alkaline medium, washing with water and drying; (4) removing phosphate ions and arsenate ions from water by using a dynamic adsorption apparatus. The method has such advantages as low cost, simple operation and high adsorption rate, and can be widely used for water purification.

The invention provides a macroporous phenolic resin, a preparation method thereof and an application in adsorbing 5-hydroxymethylfurfural. The BET specific surface area of ​​the macroporous phenolic resin of the present invention is 400~1300m 2 / g, the pore volume is 0.3~1.5cm 3 / g, the average pore diameter is 1-20nm. The macroporous phenolic resin of the present invention has high specific surface area, high adsorption capacity, high adsorption selectivity, and rich pore structure is easy to regenerate and recycle, and the macroporous phenolic resin has abundant hydroxyl functional groups, and through hydrogen bonds and hydrophobic interactions, the The adsorption capacity of 5-hydroxymethylfurfural is greatly improved, the maximum adsorption capacity can reach 111mg / g wet resin, and the elution yield of 5-hydroxymethylfurfural is greater than 99.5%; the efficient separation of 5-hydroxymethylfurfural is realized. The macroporous phenolic resin of the present invention is applied to adsorption and separation of 5-hydroxymethylfurfural, does not generate waste water, can greatly shorten the initial concentration time of 5-hydroxymethylfurfural, and realizes green separation.

The invention belongs to the technical field of preparation of dye adsorption materials, and provides a magnetic recyclable CoNi-MOFs@GR adsorbent, a preparation method and an application for adsorption of organic dyes. The CoNi‑MOFs@GR adsorbent is a bimetallic organic framework compound CoNi‑MOFs supported on graphene GR. CoNi‑MOFs have large specific surface areas, active sites, and pores. GR has high thermal stability, can be used as an adsorbent carrier itself and has adsorption function, and it also has a large specific surface area and active sites. The adsorbent formed by GR and CoNi‑MOFs has the advantages of increased specific surface area, more active sites, and enhanced chemical stability, which enhances its adsorption capacity and can achieve efficient adsorption of methylene blue MB, Congo red CR and neutral red NR. Separation, easy to separate from the solution, and can be recycled and reused.

The invention discloses a coking desulfurization waste liquid pretreatment device belonging to the technical field of coking desulfurization waste liquid treatment equipment and being used for rapidly removing sulphur and pigment in a coking desulfurization waste liquid. The technical scheme is as follows: a liquid inlet pipeline of a pressure pump and a liquid inlet pipeline of a water jet machine are respectively connected with a liquid outlet of a flotation tank; a liquid outlet pipeline of the pressure pump and a liquid outlet pipeline of the water jet machine are respectively connected with a liquid inlet of a dissolved air tank; a liquid outlet pipeline of the dissolved air tank is connected with the floatation tank; an infusion pipeline of a dosing tank is connected with the flotation tank through a dosing pump; and a sediment scraper is arranged on the flotation tank. According to the invention, the desulfurization waste liquid containing a surfactant is pressurized and subjected to air dissolution and is released at reduced pressure through an aeration head, then, air bubbles formed by the surfactant can be used for efficiently adsorbing and separating organic matters, suspended solids and metal ions, and dross can be removed by the sediment scraper, so that the aim for pre-treating the waste liquid is achieved. The coking desulfurization waste liquid pretreatment device is low in byproduct yield and capable of avoiding generating a great number of active carbon wastes in an active carbon decoloring technology, and has the advantages of simple structure and good use effect.

The invention discloses a method for extracting biological products by reverse adsorption. The invention utilizes macroporous adsorption resin to directly extract weakly polar or non-polar products from biological product liquids containing cells and mycelium fragments by means of reverse column adsorption, and the extracted products have high purity. The method of the invention not only overcomes a series of drawbacks brought by the use of organic solvent extraction in traditional biological product extraction, but also solves the contradiction that the traditional resin separation has strict requirements on the upper column liquid. The technical process of the invention is simple, the selective adsorption of products is strong, the product quality is good, and the amount of production waste is small; at the same time, the invention can help realize the online extraction and continuous production of some biological products.

The present application discloses a method for separating propylene / propane, which is characterized in that the separation is adsorption separation; the adsorbent used in the adsorption separation includes modified molecular sieves modified by imidazole compounds. The method described in this application has high selectivity to propylene, and the separation ratio of propylene / propane is as high as 4.3 or more, which reflects the high-efficiency propylene / propane adsorption and separation performance, can realize the effective separation of propylene / propane in pressure swing adsorption, and meets the requirements of industrial pressure swing adsorption Separation of propylene / propane requirements reduces industrial operating costs.

The invention discloses a millimeter-scale macroporous-mesoporous carbon sphere / calix[4]-crown-6 hybrid material. The millimeter-scale macroporous-mesoporous carbon sphere / calix[4]-crown-6 hybrid material is obtained by directionally polymerizing propenyl calix[4]arene-crown-6 onto the inner and outer pore walls of a millimeter-scale macroporous-mesoporous carbon sphere, wherein the propenyl calix[4]arene-crown-6 has a structural formula which is described in the specification. The invention also discloses a preparation method for the millimeter-scale macroporous-mesoporous carbon sphere / calix[4]-crown-6 hybrid material. The preparation method provided by the invention is simple; and the millimeter-scale macroporous-mesoporous carbon sphere / calix[4]-crown-6 hybrid material prepared by using the preparation method provided by the invention can be used for adsorption and separation of radionuclide Cs in a high-level liquid waste, and has excellent adsorption and separation effects.

The invention discloses an organic porous material for electronic special gas adsorption separation and a preparation method thereof, and a fluorine-containing organic porous framework material product connected by carbon-carbon bonds is obtained according to an aromatic hydrocarbon dehalogenation reaction principle. The material prepared by the invention has an organic nanopore structure and strong hydrophobic property, so that the material has an obvious adsorption effect on electronic special gas due to the structural characteristic.

The present invention discloses a method for separating propylene, propyne, propane and propadiene from mixed gas, wherein, comprising: a high purity component can be obtained as metal-organic frameworks as adsorbents through adsorptive separation and purification of a mixed gas containing propylene, propyne, propane and propadiene a general structural formula of the metal-organic framework material is [M(C4O4)(H2O)].1.5H2O, wherein M is metal ions, the metal-organic framework material is a three-dimensional network structure formed by transition metal ions or alkaline earth metal ions and squaric acid through coordination bonds or intermolecular forces. The metal-organic framework materials of the present invention exhibit excellent adsorption and separation performances for propylene, propyne, propane and propadiene. The cheap and available raw materials for the synthesis, simple operation, and low cost make it cost-efficient for preparation of such metal-organic frameworks. Besides, the good regeneration and repeatability, the adsorption performances kept intact with that of the original one after being activated under vacuum for several times, indicating that they have a great promising and potential for industrial application.

The invention provides a nanofiber foam based oil gas trapping device and a preparation method thereof. The nanofiber foam based oil gas trapping device is characterized in that: it includes an gas collection pump in connection with a gas delivery pipe, the gas delivery pipe is connected to an oil-gas trapping assembly, the oil-gas trapping assembly is connected to an exhaust pipe and a collection pipe, and the collection pipe is connected to an oil substance recycling bin. Specifically, the oil-gas trapping assembly includes a protective box, and the protective box is internally provided with a nanofiber based foam material. The nanofiber foam based oil gas trapping device has the characteristics of simple preparation process, low cost, convenient operation, integrated oil-gas adsorption recovery, high efficiency and continuity, and has wide application at gas stations, oil plants, wharfs and other sites, and in manufacturing industry, surface coating industry and other fields.