117results about How to "Good adsorption and separation performance" patented technology

The invention discloses a preparation method of a composite separating film filled by an interpenetrating polymer network hydrogel. The preparation method comprises the following steps of firstly, soaking a polymer membrane into a first monomer solution, fetching out, radiating under ultraviolet rays, and crosslinking, so as to obtain a first network gel composite separating film; then, soaking the first network gel composite separating film in a second monomer solution, fetching out, and performing thermal-initiation crosslinking, so as to form the composite separating film filled by the interpenetrating polymer network hydrogel. The composite separating film filled by the interpenetrating polymer network hydrogel has the advantages that the function of adsorbing heavy metal ions is realized; the heavy metal ions in water can be effectively adsorbed in the filtering and separating process; the method is simple, the efficiency is high, the operation is easy, the cost is low, the industrial production is realized, and the property of adsorbing multiple metal ions of copper, lead, mercury, zinc, cadmium, nickel and the like is excellent; the preparation can be used for the treatment of industrial heavy metal sewage, and the removal of heavy metal ions in domestic drinking water.

The invention discloses a functional nanofiber filtering material and a preparation method and application thereof, and belongs to the technical field of air purifying materials. The method comprises the following steps: adding C3N4 nanosheets into a solvent, dispersing evenly by ultrasonic vibration, adding polymer powder, dissolving evenly to obtain a polymer spinning solution containing the C3N4 nanosheets, and preparing the functional nanofiber filtering material by processing the polymer spinning solution on a substrate by the electrospinning technique; and the functional nanofiber filtering material can be well used in the filtration of organic pollutants, has high efficiency and low resistance when being used as an air filtration material, and can greatly improve the air quality.

The invention provides a metal-organic framework material for separating acetylene and ethylene, and a method for separating ethylene and acetylene. The metal-organic framework material has the advantages of good stability, high adsorption capacity, good adsorption separation selectivity, simple preparation method and low preparation cost. The structural general formula of the metal-organic framework material is Cu2(pzdc)2L.2H2O, pzdc in the formula is pyrazine-2,3-dicarboxylic acid, and the material is a three-dimensional network structure formed by copper ions, the pyrazine-2,3-dicarboxylicacid and an organic ligand A through a coordination bond or an intermolecular action force. The preparation method comprises the following steps: (1) mixing and reacting an inorganic salt, the pyrazine-2,3-dicarboxylic acid, an alkali and the organic ligand in proportion, wherein the inorganic salt is chloride, nitrate, acetate, sulfate or perchlorate of the copper ions; and (2) sequentially washing a product obtained after the reaction is finished with ionized water and anhydrous methanol, and then carrying out vacuum drying to obtain the metal-organic framework material. The metal-organic framework material is used as an adsorbent to adsorb and separate a mixed gas containing ethylene and acetylene.

An object of the present invention is to provide a separation functional material having more excellent adsorptive separation performance than previously. In order to attain this object, separation functional materials of the present invention are characterized in that they are formed by introducing a polymer side chain derived from a p-haloalkylstyrene onto the backbone of an organic polymer base and introducing a functional group onto the polymer side chain.

The invention discloses a metal organic frame material for separating ethane and ethylene and a separation method of the ethylene and the ethane .The metal organic frame material has the advantages ofgood stability, high adsorption capacity, good adsorption and separation selectivity, simple preparation method and low preparation cost. The general structural formula of the metal organic frame material is M(C7O5H4).2H2O, wherein M is a metal ion, and the structure of the metal organic frame material is a three-dimensional network structure formed from a transition metal ion or an alkaline earth metal ion and gallic acid through coordinate bonds or intermolecular forces. A preparation method is as follows: (1) an inorganic salt, the gallic acid, an alkali, and deionized water are mixed according to a ratio, stirred and dissolved, and then put into a reaction kettle for hydrothermal reaction; the inorganic salt is a chloride salt, a nitrate salt, an acetate, a carbonate, a sulphate or aperchlorate of the metal ion; and (2) after the end of the hydrothermal reaction, the deionized water and absolute ethanol are in turn used for washing, and vacuum drying is performed. The metal-organic frame material is used as an adsorbent to perform adsorption separation of a mixed gas containing the ethylene and the ethane.

The invention relates to a bimetal organic framework material adsorbent applied to methane/nitrogen separation and a preparation method thereof. The bimetal organic framework material adsorbent is a compound with super-molecular porous network structure, wherein the compound is formed by coordinating two metal ions with an organic ligand HCOOH under the action of an adjusting agent; at least one of the two metal ions is Ni(II); the coordination conditions of different metals are controlled by adjusting complexation of Ni(II) to obtain several bimetal organic framework materials with different metal ratios. The prepared adsorbent has rich micro-porous structures; the purpose of adjusting pore properties microscopically is achieved; the NH4/N2 separation effect is excellent; the material is simple to prepare and low in cost, and is extremely applicable to development and recycling of low-quality methane separated under low pressure.

The invention discloses a method for preparing a porous alginate gel microsphere adsorbing agent with an electronic injection method. The method for preparing the porous alginate gel microsphere adsorbing agent with the electronic injection method comprises steps as follows: an aqueous sodium alginate solution is prepared, then a pore-forming agent is added, and the mixture is uniformly stirred to obtain blended sol; the blended sol is put in an electrostatic spinning device, electrostatic spinning process parameters are set, the blended sol is electronically injected into a calcium chloride solution containing acid, and the mixture is stirred and filtered to obtain porous alginate gel microspheres; and the porous alginate gel microspheres are soaked in a metal salt solution, are stirred and react at the room temperature, and then are filtered and dried so as to obtain the porous alginate gel microsphere adsorbing agent. According to the invention, the simple and high-efficiency electronic injection technology is adopted to prepare the porous alginate gel microsphere adsorbing agent, and the adsorbing agent has a good adsorption property for part of anions, especially fluorine ions, and can be widely used for anion separation and wastewater treatment; and the adsorbing agent can be degraded after used, avoids secondary pollution and has important significance for environmental protection.

The invention provides a honeysuckle extract and a preparation method for extracting chlorogenci acid. The method has the advantages of good repeatability and good stability; by using the method, the content of an active component can be improved, a large amount of impurities are removed, raw materials are high in yield and low in cost; and the method is suitable for industrial production. The percentage of the main active component chlorogenci acid in the honeysuckle extract is 30%. The preparation process of the honeysuckle extract comprises the following steps: adding water the volume of which is 8-20 times as large as that of taken honeysuckle medicinal material in the taken honeysuckle medicinal to extract for 2-4 times for 0.5-1.5 hours each time; regulating the pH value of the extract to 1-6; and on a large pore absorption resin column, eluting impurities with water firstly, then eluting with 10-70% ethanol, colleting ethanol eluent, recovering the ethanol, concentrating, regulating the pH value of a concentrated liquid to 1-6, adding ethyl acetate for extraction, recovering the ethyl acetate, concentrating and drying. By using the method, the content of the active component in the extract is improved, the curative effect is improved, a large amount of impurities are removed, the problem of large moisture absorption commonly occurring in Chinese patent medicines is solved, and side effects are reduced.

A process for preparing the high-purity paeoniflorin used to prepare the peony injection for treating cardiovascular and cerebrovascular diseases includes such steps as pulverizing red peony root, hot reflux extracting in alcohol 4-5 time, centrifugal separating, adsorbing by macroreticular resin column, water washing, eluting with alcohol, collecting the eluting liquid, concentrating, adsorbing by polyamide column, water eluting, concentrating and drying.

The invention discloses a metal-organic framework material for separating xenon and krypton and a method for separating xenon and krypton. The metal-organic framework material is good in stability andhigh in adsorptive separation selectivity, the preparation method is simple, and the preparation cost is low. The general structural formula of the metal-organic framework material is [M(C4O4(OH)2).3H2O or [M(C4O4)].2.5H2O, wherein M is metal ions, and transition metal ions or alkaline earth metal ions and squaric acid form a 3D network structure through coordinate bonds or intermolecular actingforce. A preparation method comprises the steps as follows: (1) inorganic salt, squaric acid, alkali and deionized water are mixed in proportion, and the obtained mixture is put in a reactor for a hydrothermal reaction after being stirred to be dissolved, wherein the inorganic salt comprises chlorate, nitrate, acetate, carbonate, sulfate or perchlorate of metal ions; (2) after the hydrothermal reaction, a product is washed with deionized water multiple times, vacuum drying is performed, and the metal-organic framework material is obtained. The metal-organic framework material is used as an adsorbent to perform adsorptive separation on mixed gas containing xenon and krypton.

The invention discloses a device for modifying an activated carbon adsorbent by using a rotating low-temperature plasma. A track is transmitted by a motor, and is wound on a quartz tube reactor, and the two ends of the quartz tube reactor are provided with an air inlet and an air outlet; a joint of an air inlet pipe is installed in the air inlet by means of a sealed bearing, and a discharge area is formed in the middle of the quartz tube reactor and is interspersed in a grounding coil; the diameter of the grounding coil is greater than the outer diameter of the quartz tube reactor, and the grounding coil is erected on a grounding support; a corona wire is erected inside the discharge area of the quartz tube reactor by means of a rolling bearing, penetrates out of the air outlet of the quartz tube reactor and is connected with an alternating current power supply. The invention also discloses a corresponding method. The device and the method provided by the invention have the advantages of easiness in operation, environment friendliness, economy, and large-scale production, the obtained absorbent is in a granular shape, the penetration time of the adsorbent can be prolonged, the CH4 adsorption capacity of the adsorbent can be increased, and the device and the method can be used for effectively enriching and separating CH4 gas with the concentration of 0.2% or used for the treatment field of volatile organic compounds (VOCs).

The invention relates to a preparation method of activated carbon adsorbent loaded with titanium dioxide, which belongs to the technical field of absorbent. The method comprises the following specific steps that: the activated carbon is pre-treated, washed and dried; titanium trichloride (TiCl3) solution is prepared into titanium trichloride-hydrogen chloride (TiCl3-HCl) solution with different molar concentration, and the TiCl3-HCl solution is transferred to the polyfluortetraethylene liner of a stainless steel reaction kettle; the treated activated carbon is added into the TiCl3-HCl solution, and the stainless steel reaction kettle is screwed and put into an electric heating constant temperature blowing dry box to be treated by hydrothermal treatment; and the activated carbon after hydrothermal treatment is washed and dried, and the activated carbon absorbent loaded with titanium dioxide is obtained. The preparation method of activated carbon adsorbent loaded with titanium dioxide has a simple process, is convenient to operate, obtains granular loaded absorbent, can improve the penetration time of the absorbent, does not use any organic solvent, nearly has no pollution in a production process, meets the requirements of sustainable development, and is an environmental-friendly production process.

The invention relates to a preparation method for an amino nano-TiO2/SiO2 compound fiber membrane, a product and an application thereof. In the method, a static spinning technique is utilized. The method comprises the following steps: putting an amino TiO2/SiO2 precursor solution into an injector and controlling the spinning rate and voltage; acquiring a compact amino nano-TiO2/SiO2 compound precursor fiber membrane on a collecting plate after a period of time; and performing vacuum drying, thereby acquiring the amino nano-TiO2/SiO2 compound fiber membrane. According to the preparation method,the removal rate of the heavy metal ions in water can be effectively increased. According to the invention, the small size effect, high specific surface area, high porosity and functional group introduction of the nanometer fiber are fully utilized, so that the binding sites with the corresponding heavy metal ions are increased, the adsorption capacity of the adsorbent to the heavy metal ions iseffectively increased, the absorbing balance time is shortened, the absorbing materials are easily separated and recycled and the problem of adsorbent recycling is effectively solved. The process is simple, the cost is low and the selectivity is high.

The present invention relates to a method of separating and purifying isoleucine from isoleucine solution, and belongs to the technical field of analog mobile bed separation. In the method, two special types of resin which are in particular used for absorbing and separating isoleucine, namely, metal ion type chelated resin and acid radical ion type chelated resin, are synthesized at first; a fixed bed filled with the special resin adopts the simulation moving bed technology to separate and purify the isoleucine solution, so as to acquire the pure isoleucine product; the complete separation of the isoleucine, protein, sugar, pigment, inorganic salt and mixed amino acid can be basically realized through the continuous chromatographic separation of the moving bed; the utilization rate of the resin is high; the full automation of the production process is realized; the labor intensity is low; the production field is small; the production cost is low; only 1 to 2 m3 of water and a small amount of electricity are required for separation of each cubic meter of isoleucine; no chemical is required in the production process; and no pollution is generated.

The invention relates to an ultra-crosslinking organic polymer material and a preparation method and an application of the ultra-crosslinking organic polymer material; and the high-specific surface area ultra-crosslinking organic micropore polymer material is obtained by weighing certain amount of 3,4-dyhydroxyl phenylacetic acid, dissolving in methyl alcohol, adding 1,2-dichloroethane into the solution, adding a crosslinking agent dimethoxymethane and anhydrous ferric chloride under the protection of nitrogen, refluxing and reacting for 5 hours at 45 DEG C, refluxing and reacting for 6-18 hours at 80 DEG C; transferring a product into a conical flask after finishing the reaction, washing with methyl alcohol for multiple times, implementing Soxhlet extraction until a supernate is colorless; and drying under vacuum. The high-specific surface area ultra-crosslinking organic micropore polymer material is applied to separating and analyzing C4-C10 hydrocarbon ingredients like a hexane isomer and methylbenzene in naphtha, and adsorbing and removing cationic dyes like methylene blue, Rhodamine B and Rhodamine 6G in dye wastewater.

The present invention relates to a method for extracting arabinose from arabic gum hydrolyzate, which belongs to the technical field of simulated moving bed chromatogram separation. Acidic calcium or lead type chelate resin, which is specially used to absorb and separate out the arabinose, is first synthesized; and then, under the operation temperature between 20 DEG C and 75 DEG C and with water used as eluent, a fixed bed, on which the acidic calcium or lead type chelate resin is assembled, is adopted to use the simulated moving bed technology to thoroughly separate out heterosugars, such as the arabinose and galactose, in order to separate out and purify the arabinose product from arabic gum hydrolyzate. The method has the following advantages: since the continuous moving bed chromatogram separation is adopted, the utilization rate of the resin is high; the production process is fully automated, labor intensity is low, and the production site is small; the production cost is low, and only 2 cubic meter to 6 cubic meters of water and a small amount of electricity are needed in the separation of arabic gum hydrolyzate per cubic meter; and the production process does not use any chemical and generate any pollution.

The invention discloses a light cement-based graphene oxide composite adsorption material. The light cement-based graphene oxide composite adsorption material comprises, by weight, 600-650 parts of silicate cement with a mark of 42.5, 10-18 parts of sand with the fineness of 2.5-2.8, 200-230 parts of water, 0.4-0.7 part of foaming agents and 200-240 parts of graphene oxide nanometer laminar dispersion liquid. The invention further discloses a method for preparing the light cement-based graphene oxide composite adsorption material. The light cement-based graphene oxide composite adsorption material and the method have the advantages that heavy metal ions such as Cr<3+>, Cr<6+>, Ni<2+>, Cu<2+>, Pb<2+>, Zn<2+>, As<5+> and Hg<2+> in wastewater can be adsorbed and removed by the light cement-based graphene oxide composite adsorption material, the removal rate can reach 98% at least, the light cement-based graphene oxide composite adsorption material is high in adsorption capacity, adsorption rate and selectivity and easy to separate and regenerate, and the like.

The invention discloses a preparation method of a shape memory imprinting gel, and belongs to the technical field of adsorption material preparation. A prepared water-soluble phenylboronic acid, usedas a functional monomer, and tetrodotoxin are polymerized through a Pickering emulsion technology by utilizing the affinity effect of boron with nano-silica as a stable particle, a dispersion as a water phase and octadecyl methacrylate as an oil phase, an emulsion is introduced, polymerization is initiated by utilizing ultraviolet light to obtain a gel, and template molecules are eluted to obtainthe shape memory imprinting gel. The shape memory imprinted gel has a good adsorption separation performance and a remarkable adsorption separation effect on tetrodotoxin when applied to adsorption separation of tetrodotoxin in an aqueous solution. The prepared imprinted gel can be swelled and fully contacted with water after entering the water, the formed gel has a good structure, is not prone tobeing dispersed, can be restored to the original shape through drying after adsorption, has a certain shape memory function, is convenient for TTX enrichment, and can be repeatedly used and recycled.

The invention discloses a novel SAPO (silicoaluminophosphate) molecular sieve. An X-ray diffraction spectrum of the novel SAPO molecular sieve comprises following four diffraction peaks: a diffraction peak A, a diffraction peak B, a diffraction peak C and a diffraction peak D, wherein for the diffraction peak A, 2theta is in a range from 12.82 degrees to 13.2 degrees, and peak intensity is IA; for the diffraction peak B, 2theta is in a range from 17.63 degrees to 18.15 degrees, and peak intensity is IB; for the diffraction peak C, 2theta is in a range from 21.80 degrees to 22.40 degrees, and peak intensity is IC; for the diffraction peak D, 2theta is in a range from 25.92 degrees to 26.38 degrees, and peak intensity is ID; the peak intensity IB of the diffraction peak B is the maximum; a peak intensity ratio of each of other diffraction peaks except the diffraction peak A, the diffraction peak C and the diffraction peak D to the diffraction peak B does not exceed 0.07. The SAPO molecular sieve is taken as a catalyst to be applied to an acid catalyzed reaction and a reaction for preparing olefins from an oxygen-containing compound through conversion, and shows good catalysis performance; the SAPO molecular sieve is used for separation of CO2 from CH4 and/or N2 and shows good gas adsorptive separation performance.

The invention discloses a metal organic framework material for separating xenon gas and krypton gas and a preparation method and application thereof. The metal organic framework material has a generalstructure formula of [M(C6O4)].nH2O or [M2(C6O4)3].nH2O. In the formula, M represents scandium, vanadium, zirconium, molybdenum, chromium, iron, copper, yttrium, tin, niobium or titanium ion and n represents the number of water molecules and is 2-8. The metal organic framework material is a three-dimensional network structure formed from transition metal ions or alkaline earth metal ions and an organic ligand (2, 5-dihydroxy-1, 4-benzoquinone) through a coordination bond or an intermolecular force, wherein the water molecule coordinates with the metal and produces strong hydrogen bonding effects on oxygen atoms of the organic ligand. The metal organic framework material is used as an adsorbent to adsorb and separate the mixed gas containing xenon gas and krypton gas. The metal organic framework material has good stability and high adsorption separation selectivity. The preparation method has simple processes and realizes a low preparation cost.

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 method relates to separate residue sugar for extracting organic acid from opposite fermentation liquor and mother liquor. Wherein, using said liquor as raw material and water as eluant to separate the organic acid and residue sugar completed with analog moving bed at 20~75Deg, and obtaining the objective constituent. This invention uses high-efficient chromatography to separate and prepare organic acid.

The invention relates to a lignin organic slow-release liquid fertilizer for wheat and a preparation method thereof, belonging to the technical field of organic slow-release fertilizers. The lignin organic slow-release liquid fertilizer for wheat is prepared from the following raw materials in parts by weight: 20-35 parts of lignin, 10-20 parts of a high molecular polymer, 2-8 parts of cellulose mud cakes, 3-7 parts of organic abamectin, 10-15 parts of acidic hemicellulose liquid, 10-15 parts of alkaline hemicelluloses liquid, 8-13 parts of a nitrogen fertilizer, 10-15 parts of a phosphorus fertilizer, 12-16 parts of a potassium fertilizer, 5-10 parts of nitric acid, 10-20 parts of plant cytokinin, 16-20 parts of zeolite powder, and 5-10 parts of activated carbon. The raw material components in the lignin organic slow-release liquid fertilizer for wheat coordinate with one another to achieve a synergistic action, the nutrient proportions of the raw materials consider the total nutrient requirement in the whole growth period of the wheat to ensure that the nutrient elements required by the growth and development of the wheat can be comprehensively supplied, so that the lignin organic slow-release liquid fertilizer is complete in nutrition, more in function, high in comprehensive fertility and great in potentiality and is special for the wheat.