102 results about "Macroporus" patented technology

The invention belongs to the technical field of functional resin, and particularly relates to macroporous adsorption resin for sugar decolorization and a preparation method and application thereof.The preparation method of the macroporous adsorption resin for sugar decolorization comprises the following steps that water, a dispersing agent and a polymerization inhibitor are mixed, and a water phase is obtained; mixing a monomer, an initiator and a pore-foaming agent to obtain an oil phase; mixing the water phase and the oil phase, standing, shaping, carrying out polymerization reaction, and removing the pore-foaming agent to obtain matrix white balls; the monomer comprises at least one of divinylbenzene, styrene and methyl acrylate; in the oil phase, the mass ratios of the monomer, the initiator and the pore-foaming agent are respectively 36.38%-41.5%, 0.34%-0.45% and 58.05%-63.19%; and mixing the matrix white balls and Lewis acid, and carrying out a post-crosslinking reaction to obtain the macroporous adsorption resin for sugar decoloration. The synthesis process is low in equipment requirement, simple and convenient to operate, low in cost and environment-friendly; and the prepared product has high decolorization rate and can be regenerated.

The invention relates to the technical field of alumina material preparation, in particular to macroporous pseudo-boehmite and a combined preparation method thereof. The preparation method comprises the following steps: carrying out neutralization reaction on carbon dioxide and a sodium aluminate solution to obtain neutralized slurry; performing first aging treatment on the neutralized slurry to obtain first aged slurry; filtering the first aged slurry to obtain a solid-phase material and a liquid-phase material; sequentially washing and drying the solid-phase material to obtain a first macroporous pseudo-boehmite product; aluminum sulfate and the sodium aluminate solution are subjected to parallel flow neutralization, and aluminum hydroxide slurry is obtained; mixing the aluminum hydroxide slurry with the liquid-phase material, and then carrying out second aging treatment to obtain second aged slurry; performing post-treatment on the second aged slurry to obtain a second macroporous pseudo-boehmite product; and collecting the two macroporous pseudo-boehmite products in batches. According to the preparation method, pseudo-boehmite with different pore structure characteristics is respectively prepared through two neutralization technologies based on three mechanisms of staged treatment, material recycling and structure complementation.

The utility model discloses a separation and purification device based on macroporous resin, and relates to the technical field of separation and purification, the separation and purification device based on macroporous resin comprises a chromatographic column, the chromatographic column is provided with a chromatographic structure convenient for separation and purification, the chromatographic structure comprises a feed port, a fixed base and a circular truncated cone flow guide ring, the feeding hole is fixedly formed in the upper end part of the chromatographic column, the fixed base is positioned at the lower end part of the chromatographic column, each circular truncated cone flow guide ring is positioned on the inner side wall of the chromatographic column, an adjusting valve is arranged at the lower end part of the chromatographic column, and two column mounting grooves are formed in the upper end part of the feeding hole. The chromatographic column is arranged to purify anthocyanin, the purity of the obtained anthocyanin is higher than that of unpurified anthocyanin, toxic organic solvents are avoided in the whole process, only ethyl alcohol is used, environment friendliness is achieved, resin can be repeatedly used, and the production cost is reduced.

The invention relates to the technical field of resin preparation, in particular to macroporous weak-base anion exchange resin as well as a preparation method and application thereof. The crosslinked styrene-divinylbenzene microsphere matrix obtained by a preparation process of regulating and controlling the crosslinked styrene, the divinylbenzene and the pore-foaming agent and adding the crosslinking agent has the advantages of high mechanical strength, controllable specific surface area, adjustable pore diameter and the like. A macroporous weak base anion exchange resin; according to the method, the total exchange capacity reaches 4.8 mmol / g or above, the resin sphericity in the fatigue strength of 100 cycles is 90% or above, the resin sphericity in the fatigue strength of 300 cycles is 70% or above, the treatment volume ratio (BV) in the first cycle in the xylose decolorization process is 80 or above, and the purposes of improving the resin quality, reducing the environmental pollution and improving the energy efficiency ratio can be achieved.

The macroporous resin gel chromatography device comprises a macroporous resin chromatography column, the macroporous resin chromatography column comprises a supporting column, two first adjustable supports, an arc-shaped clamping plate and a glass tube, one end of each first adjustable support is connected to the supporting column in a sleeved mode, the arc-shaped clamping plate is fixed to the other end of each first adjustable support, and the glass tube is connected with the supporting column in a sleeved mode. The glass tube is clamped on the inner side of the arc-shaped clamping plate; the supporting assembly comprises a second adjustable support, an L-shaped supporting plate, a rotating shaft, a connecting ring and a connecting plate, the supporting column is sleeved with one end of the second adjustable support, one end of the L-shaped supporting plate is fixed to the other end of the second adjustable support, one end of the rotating shaft is fixed to the inner side of the L-shaped supporting plate, the rotating shaft is sleeved with the connecting ring, and the connecting plate is fixed to the side edge of the connecting ring. The utility model solves the problem that the process of slowly dropping substances to be separated by experimenters takes a long time and consumes more physical power due to the fact that the chromatographic column is higher.

The invention discloses a macroporous distribution plate with a three-dimensional structure, which is arranged between a first-section regenerator and a second-section regenerator and comprises a distribution plate and a cylindrical hollow cylinder, the distribution plate is a partition plate of the first-section regenerator and the second-section regenerator, and a cylindrical hollow barrel is arranged in the center area of the distribution plate and is perpendicular to the distribution plate; the top of the hollow cylinder is closed, and the bottom is connected with the first-section regenerator; and holes are formed in the side wall of the cylinder. The problem of distribution of catalysts and flue gas from the first-section regenerator to the second-section regenerator is solved, fluidization of a second-section regeneration turbulent bed is stable, the transfer coefficient of excess oxygen in the flue gas of the first-section regenerator is increased, tail combustion of the flue gas in a dilute-phase space can be effectively controlled, and a new scheme is provided for an in-service device to solve the tail combustion problem.

The invention discloses a preparation method of water-resistant macroporous spherical silica gel, and belongs to the technical field of inorganic material preparation. The preparation method comprises the following steps: preparing gel balls by taking water glass and sulfuric acid as raw materials through an air granulation method, namely a wet gel initial product, and performing drying, alkali treatment and secondary drying on the wet gel initial product to obtain the water-resistant macroporous spherical silica gel. The initial spherical silica gel is prepared by adopting a relatively mature industrial method at present, and then the adsorption rate of the silica gel to water is slowed down through post-treatment modification, so that the silica gel does not crack when encountering water. In addition, the product has large pore volume and pore diameter, and can be widely applied to preparation of a supported catalyst by an impregnation method.

The invention relates to the field of chemical reaction equipment, and discloses a reaction device for removing oxalic acid in glyoxylic acid by using macroporous resin, which comprises a thin and tall chromatographic column, two groups of filter material precipitation plates respectively filled in the upper layer and the lower layer of the chromatographic column, and two groups of filter material precipitation plates respectively filled in the upper layer and the lower layer of the chromatographic column, the filter material precipitation plate group is formed by stacking an upper filter plate, a lower filter plate, and filter cloth I and filter cloth II with different mesh numbers up and down; the upper-layer convex ring filling bin and the lower-layer convex ring filling bin are respectively arranged at the positions close to the top end and the bottom end of the chromatographic column in a convex manner and are used for filling the two filter material precipitation plate groups; a downward-moving clamping structure corresponding to the space between the upper filter plate and the lower filter plate is arranged in the filter material precipitation plate group; according to the reaction device for removing oxalic acid in glyoxylic acid by using macroporous resin, oxalic acid can be efficiently removed, broken resin can be blocked, it is ensured that flowing-out glyoxylic acid is pure, meanwhile, key filtering parts are specially designed to be replaceable, and equipment maintenance and part replacement are facilitated.

A process for preparing a macroporous material comprising an active phase comprising a potassium phosphate salt and / or a cesium phosphate salt and a support comprising α-SiC silicon carbide and silica comprising the following steps: a) contacting a colloidal silica sol with a powder of a potassium and / or cesium phosphate salt to obtain a suspension; b) adding a powder of precipitated silica, a powder of α-SiC silicon carbide and a solvent to obtain a paste; c) shaping the paste to obtain a material precursor; d) drying the material precursor at a temperature between 15°C and 250°C; e) calcining the dried material precursor obtained at the end of step d) at a temperature above 250°C and below or equal to 1200°C.

The present invention relates to a catalytic cracking catalyst, comprising: 5-40 wt% of a molecular sieve, 5-40 wt% of clay calculated on a dry basis, 5-35 wt% of a silicon species calculated on the basis of SiO2, 30-75 wt% of an aluminum species calculated on the basis of Al2O3, 0.5-15 wt% of a stabilizing element calculated on the basis of an oxide, and 0.5-10 wt% of an activity-modifying element calculated on the basis of an oxide. The content ratio of the silicon species to the aluminum species is 0.05-2 calculated on the basis of the molar ratio of SiO2 / Al2O3. The stabilizing element is selected from at least one of group IIIB elements and group IVB elements, and the activity-modifying element is selected from at least one of Mg and P; or the stabilizing element is selected from Mg, and the activity-modifying element is selected from at least one of P, B, Fe, group IIIB elements, and group IVB elements. The present invention further relates to a method for preparing the catalytic cracking catalyst and a heavy oil catalytic cracking method.

The invention relates to the technical field of mesoporous material preparation, and discloses a macroporous carbon sphere as well as a preparation method and application thereof. The macroporous carbon sphere provided by the invention has a pore channel structure diverging in the center; the pore diameter is 7-150nm, the specific surface area is 80-1600m < 2 > / g, and the pore volume is 0.2-1.5 cm < 3 > / g. The preparation method comprises the following steps: dissolving a first surfactant in a composite solvent to obtain a precursor solution; adding a pore-enlarging agent and a second surfactant into the precursor solution to obtain an emulsion; then adding a phenolic precursor, formaldehyde and a catalyst for reaction; collecting a solid phase, and carrying out heat treatment in an inert atmosphere to obtain macroporous phenolic resin spheres; and carrying out carbonization treatment in an inert atmosphere to obtain the macroporous carbon spheres. The macroporous carbon sphere has a large pore diameter and a highly open pore channel structure, uniform deposition of inert discharge products in pore channels can be realized, efficient ion transmission and gas diffusion are ensured, an excellent conductive network is maintained, and highly reversible generation and decomposition of the discharge products are realized.

The microporous noise-reducing aerogel coating material is prepared from the following raw materials in parts by weight: 100 to 110 parts of tetraethoxysilane, 1 to 2.5 parts of hydrophilic emulsifier, 5 to 10 parts of pore-foaming agent, 0.5 to 2 parts of initiator, 30 to 40 parts of functional monomer, 5 to 10 parts of cross-linking agent and 2 to 3 parts of lipophilic emulsifier. According to the invention, a hierarchical pore structure from micron to nanoscale is constructed in situ through a one-step method. In the gelation and drying processes, the interface of the emulsion drops is used as a template to guide and form a macroporous skeleton; meanwhile, through a sol-gel process of a silicon source and volatile / reactive pore forming of an organic phase, mesoporous and microporous structures are formed in pore walls. And finally, a three-dimensional through'macropore-mesopore-micropore 'hierarchical pore structure is formed.

The utility model relates to the technical field of adsorption devices, in particular to a macroporous resin adsorption and desorption device which comprises supporting legs, an adsorption box, a drainage frame, a water inlet pipe, a water outlet pipe, a coaxial reversing assembly, a stirring structure and an adsorption assembly, through cooperative work of the coaxial reverse rotating assembly, the stirring structure and the adsorption assembly, synchronous but reverse rotation of the forward rotating shaft and the reverse rotating shaft is realized, so that comprehensive mixing and flowing of liquid in the adsorption box are promoted, and macroporous resin in the adsorption box I and the adsorption box II can effectively adsorb target components; therefore, the adsorption effect is enhanced, the problem that the fluidity of macroporous resin in the device is poor is solved, in addition, liquid can flow into the second adsorption box from the first adsorption box through the water passing holes, and the continuous adsorption process is achieved.

The present invention discloses a nano-macroporous tubular γ-alumina and a preparation method thereof, comprising the following steps: <subgt;3< / subgt;·6H<subgt;2< / subgt;O的水溶液中缓慢滴入氨水,通过调节pH至8‑10,快速加入无水乙醇经充分搅拌均匀后保温静置,沉淀反应结束后,将沉淀物进行过滤、洗涤、干燥和焙烧,得到纳米大孔列管式γ‑氧化铝。本发明方法在低温、无模板剂条件下制备得到大孔列管式γ‑氧化铝,制备成本低、环境友好;本发明制备的γ‑氧化铝结构独特,呈列管式单向排列、两端为贯穿孔,且具有大孔结构,易于作为催化剂及载体、吸附剂使用,尤其对甲基橙的吸附率高达99.4%。

This application relates to the field of catalyst support technology, specifically disclosing a macroporous high-strength activated alumina and its preparation method. The preparation method of the macroporous high-strength activated alumina includes the following steps: adding organosilane to a pseudo-boehmite slurry with a solid content of 10-25%, reacting at 50-80℃ and pH 7-9 for 1-4 hours to obtain a modified slurry; filtering and drying the modified slurry to obtain a dry gel; mixing the dry gel with guar gum powder, nitric acid, polyethylene glycol 400, and water, and extruding it into strips, then drying at 100-120℃ for 4-8 hours to obtain a molded product; heating the molded product to 500-650℃ and holding at that temperature for 2-5 hours, then naturally cooling to obtain the high-strength macroporous activated alumina support. The activated alumina obtained in this application possesses both macroporous volume and high strength.

The invention relates to a method for extracting components for treating gout in a sunflower disk, which improves the yield of a solid extract by improving the macroporous resin elution step, and in the extracted solid extract, the contents of effective components such as rutin, caffeic acid and 6-methylcoumarin for treating gout are obviously increased.

The utility model relates to the technical field of dehydration equipment, and provides macroporous ion exchange resin dehydration equipment which comprises a shell, a supporting block is installed on the surface of the shell, a supporting column is installed at the bottom end of the supporting block, a falling groove is formed in the surface of the shell, a discharging opening is formed in the left side of the shell, a side block is installed on the left side of the shell, and a discharging opening is formed in the right side of the shell. The bottom end of the side block is provided with a slag discharging opening, the right side of the shell is provided with a motor, the output end of the motor is provided with a rotating rod, efficient stirring and dewatering processes are achieved, the treatment speed is increased, and the feeding opening is provided with a hopper, a limiting plate, a cover plate and other assemblies, so that material adding is facilitated, and the stirring effect is improved; the safety and the sealing performance of the equipment are enhanced, the filtering process is smoother and easy to clean and replace due to the sliding connection design of the filter screen and the fixing plate, and on the whole, the equipment is excellent in the aspects of improving the production efficiency, reducing the maintenance cost and enhancing the operation safety.

The present invention relates to a putty formulation suitable for use as a bone void filler. The putty formulation comprises granules comprising a macroporous cement composition comprising hydroxyapatite and β-calcium pyrophosphate. The porosity of the composition is 60-80 vol%, the average particle size of the granules is 50-800 µm, and the portion of granules in the putty formulation is 25-50 wt%.

The application belongs to the technical field of membrane separation, and discloses a method for preparing CAU-10-H membranes for gas separation by modifying a macroporous tubular carrier with aluminum sulfate, in particular to the following steps: firstly, preparing a proper aluminum sulfate solution, then introducing the aluminum sulfate solution into the carrier by means of hot dipping, and then calcining the carrier with the introduced solution by programmed temperature rising, so that the smoothness of the surface of the modified carrier is significantly improved; and due to the introduction of aluminum sulfate on the surface of the carrier, the aluminum-based CAU-10-H membrane can be crystallized into a film on the macroporous micron-sized carrier. The dense CAU-10-H membrane prepared on the macroporous carrier by the method of modifying the carrier with aluminum sulfate has good separation performance for H2 / CO2 gas.

The invention relates to the technical field of biological catalysis, in particular to a preparation method and application of a co-immobilized enzyme based on macroporous resin adsorption-chitosan membrane coating, and the preparation method mainly comprises the following steps: pretreating resin, adding glucose oxidase and catalase, fully adsorbing, and coating with a chitosan membrane to obtain the co-immobilized enzyme, the method can be used for producing gluconic acid. The co-immobilized enzyme prepared by the invention has the characteristics of adaptation to low-pH production, high enzyme activity retention rate and the like.

The invention discloses a supporting skirt for a macroporous distribution plate. The supporting skirt comprises a cylindrical skirt, a conical skirt, a metal protection layer and a heat insulation layer, the upper end of the cylindrical skirt is connected with the macroporous distribution plate, and the lower end of the cylindrical skirt is connected with the conical skirt; the lower end of the conical skirt is connected with the inner wall of the top of the regenerator barrel; heat insulation layers are arranged inside and outside the skirt; and the heat insulation layer is fixed on the skirt by the metal protection layer. According to the invention, a cylindrical and conical skirt combined structure is adopted, and the conical skirt is rooted on the cylinder at the lower end of the regenerator instead of the transition section of the small cone section of the regenerator, so that the height of the skirt of the macroporous distribution plate is not limited by the height of the cone of the regenerator any more, the required height of the skirt can be conveniently realized, and the temperature gradient of the skirt is small enough; the extrusion and breakage of the wear-resistant nozzles arranged on the pore plate caused by the deformation of the macropore distribution plate due to temperature difference deformation are greatly relieved, the failure of a welding seam at the support skirt is also avoided, meanwhile, the field installation is facilitated, and the installation quality is ensured.

This invention discloses a method for extracting limonin, comprising the following steps: S1, preparing an extract containing limonin; S2, adding macroporous resin to the extract and stirring, the macroporous resin being used to adsorb limonin in the extract; S3, removing the macroporous resin from the extract and placing it in a chromatography column to collect the eluent; S4, evaporating and concentrating the eluent to obtain a limonin extract, using ethyl acetate as a washing solvent, ultrasonically dissolving the limonin extract, then adding pure water for washing, concentrating and evaporating the washing solution to obtain a limonin sample; S5, performing TLC directional analysis on the limonin sample to check whether the limonin sample is qualified. This invention improves the extraction rate of limonin and yields a high extraction content.

The macroporous resin enrichment device comprises a box body and a liquid inlet formed in the top of the box body, the interior of the box body is divided into a liquid inlet cavity, an extraction cavity and a liquid outlet cavity in sequence from top to bottom through an upper partition plate and a lower partition plate, a middle shaft is arranged on the vertical center line of the extraction cavity, an inner gear is arranged on the middle shaft, and an outer gear is arranged on the inner gear. A circle of vertical pipes and a circle of vertical shafts are sequentially arranged around the middle shaft, the upper ends of the vertical pipes are communicated with the liquid inlet cavity, middle gears are arranged on the vertical pipes, outer gears are arranged on the vertical shafts, the inner sides of the middle gears are meshed with the inner gears, and the outer sides of the middle gears are meshed with the corresponding outer gears; the inner-ring extraction cylinder and the outer-ring extraction cylinder are filled with macroporous resin, filter screens are arranged at the lower ends of the inner-ring extraction cylinder and the outer-ring extraction cylinder, and the lower end of the outer-ring extraction cylinder is communicated with the liquid outlet cavity. In conclusion, the device disclosed by the utility model has the advantages of good macroporous resin flowability, high enrichment efficiency and good extraction effect.

The invention discloses a preparation method of a macroporous magnesium-aluminum composite material, and belongs to the technical field of chemical engineering, and the method comprises the following steps: preparation of magnesium-aluminum sol, preparation of a first solution, preparation of a magnesium-aluminum dry gel film, preparation of a macroporous magnesium-aluminum composite material precursor and preparation of the macroporous magnesium-aluminum composite material. According to the invention, the alumina matrix is subjected to magnesium-aluminum coating modification, the pore structure of the magnesium-aluminum composite material is optimized, the surface acid-base property of the adsorbent material is improved by combining the modification of the organic ligand, and the adsorption selectivity of water vapor is greatly reduced while the structural stability of the material is ensured; the carbon dioxide can be efficiently captured in a high-water-vapor environment (such as air). The invention also discloses the macroporous magnesium-aluminum composite material prepared by the preparation method. Meanwhile, the invention further discloses application of the macroporous magnesium-aluminum composite material in the field of adsorption.

The present application provides a kind of millimeter calcium alginate gel ball with open macroporous structure and its preparation method.The base material of the gel ball is calcium alginate, the gel ball has micron-sized pore structure that is interconnected inside, and the micron-sized pore structure that is interconnected inside the gel ball is open on the surface of the gel ball, the average pore size of the micron-sized pore structure inside the gel ball is 120-160 μm, and the particle size of the gel ball is 2-5 mm when it reaches swelling equilibrium in water.The present application can solve the problem that it is difficult to obtain open macroporous structure when preparing calcium alginate gel ball in the prior art, and realize the preparation of calcium alginate gel ball with open and interconnected macroporous structure and millimeter small size at the same time.

The invention discloses a method and system for recycling HMX and RDX through macroporous adsorption resin, and belongs to the technical field of environmental remediation. The method comprises the following steps that the macroporous adsorption resin with set physicochemical properties is selected; the method comprises the following steps: adding macroporous adsorption resin into IM tail water containing HMX and RDX, and carrying out adsorption reaction under set conditions; after adsorption is completed, resin saturated in adsorption is separated from the waste liquid obtained after adsorption, then the resin saturated in adsorption is treated with a desorption agent, and resin obtained after desorption and a solution containing HMX and RDX are obtained; the desorbed resin is put into IM tail water containing HMX and RDX again for adsorption, the adsorption-desorption process is repeated, and circulation is carried out for multiple times; and distilling and drying the solution containing HMX and RDX obtained by adsorption-desorption to obtain HMX and RDX solids. According to the method, through cyclic adsorption-desorption operation, HMX and RDX can be effectively enriched, the recovery efficiency is improved, pollution of pollutants to the environment is reduced, and the method conforms to the sustainable development concept.

The invention provides a process optimization method for purifying emodin through macroporous resin, and belongs to the technical field of chemical purification processes. The method comprises the following steps: respectively mixing different pretreated macroporous resins with an emodin adsorbate solution, carrying out adsorption under a static test condition until saturation, carrying out chromatographic analysis on the solutions before and after adsorption, and calculating an interaction mechanism between emodin and the macroporous resins by adopting a molecular docking technology, molecular dynamics and binding energy. Screening to obtain macroporous resin with the best adsorption effect and purification conditions; the method comprises the following steps: adsorbing to be saturated by adopting macroporous resin with an optimal adsorption effect and an emodin adsorbate solution under a dynamic adsorption condition, firstly washing impurities with water, then desorbing with ethanol to obtain an eluent, and concentrating and crystallizing the eluent to obtain the high-purity emodin. The purity of the purified emodin reaches up to 99.8%, and an efficient, simple, convenient and stable method is provided for obtaining of high-purity emodin and industrial large-scale production of emodin.