17 results about "Macroporus" patented technology

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.

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.

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.

This invention provides a method for constructing ordered porous organic crystalline materials based on templates. This method utilizes supramolecular interactions such as hydrogen bonding, halogen bonding, and π-π interactions to successfully construct ordered porous structures, particularly ordered macroporous structures. This method innovatively solves the problem of achieving large-sized (diameter greater than or equal to 50 nanometers) ordered permanent pores in traditional (hydrogen-bonded) organic crystalline materials, while ensuring the material's excellent stability and ordered macroporous properties. The ordered porous (especially ordered macroporous) (hydrogen-bonded) organic crystalline materials constructed by this invention, due to their unique structure and properties, are expected to show broad application prospects in catalysis, biomedicine, and other fields.

The utility model relates to the technical field of pharmaceutical equipment discloses a macroporous adsorption resin column, including: first resin sleeve, first resin sleeve is cylindrical, cleaning structure, cleaning structure includes first cleaning part and second cleaning part, first cleaning part includes two groups of second resin sleeve of setting in the outside of first resin sleeve, the outside wall on one side of second resin sleeve is fixed with first connecting sleeve, the outside of second resin sleeve is provided with cleaning sleeve, and the rotating installation of cleaning sleeve is in the inside of first connecting sleeve, and the inside fixed mounting of cleaning sleeve has first water pipe, and the inside fixed mounting of first water pipe has water jet hole, second cleaning part includes the first thread groove of setting in the inside of cleaning sleeve, and the outer wall of cleaning sleeve is provided with water valve, reach the purpose that the position of washing structure is adjusted, make water to resin column carries out sufficient washing, improve the cleaning efficiency of resin column, reduce resin column jam condition, improve the convenience of device use.

The application discloses a preparation method of a styrene macroporous anion resin, and comprises the following steps: 1) preparation of macroporous white balls; 2) chloromethylation; 3) composite amination; 4) transformation and post-treatment. The application introduces rigid norbornene monomer copolymerization, significantly improves the thermal stability and mechanical strength of the resin; an "organic pore-forming agent + inorganic pore-forming agent" composite pore-forming system is adopted, a hierarchical porous structure coexisting micropores, mesopores and macropores is successfully constructed, and thus the adsorption capacity and mass transfer rate of the resin are effectively improved; a composite amination reaction is adopted, the N-alkyl imidazole adopted can generate imidazolium salt functional groups, the resin has good selectivity for hydrophobic anions such as perchlorate, and the urotropine adopted provides additional crosslinking and chelating sites, thereby enhancing the mechanical strength and heavy metal ion removal capacity of the resin; the prepared anion resin has good selectivity, good thermal stability, high mechanical strength and good pore-forming effect.

The application discloses a kind of gas-sensitive materials based on three-dimensional ordered macroporous and its preparation method and application, and belongs to gas sensing material technical field, wherein, the preparation method of the gas-sensitive material includes the following steps: self-assembly forms three-dimensional ordered polymethyl methacrylate microsphere template;Three-dimensional ordered macroporous Pb-ZIF-8 is prepared by polymethyl methacrylate microsphere template method;CsPbBr3 is confined crystallization in the channel of three-dimensional ordered macroporous Pb-ZIF-8, and gas-sensitive material is prepared.The gas-sensitive material prepared by the application can be used for preparing nitrogen dioxide gas-sensitive element, and the nitrogen dioxide gas-sensitive element can detect the change of element resistance signal under light excitation, can realize the high sensitivity, high selectivity and repeatability detection of room temperature environment nitrogen dioxide gas, and has wide application prospect in environmental monitoring field.

The present invention relates to a material in the form of a monolithic silica aerogel with multi-scale porosity, characterized in that the material comprises macrocellular walls in the form of aerogel, to the use of said material and to a method of preparing a material in the form of a monolithic silica aerogel.

A method for treating wastewater containing triazole. A method for treating wastewater containing benzotriazole is provided, which comprises the following steps: (1) optionally adjusting the pH value of the wastewater to the range of 0.5-4; (2) adsorbing the wastewater obtained in step (1) with 20-100 times the resin volume of macroporous adsorption resin; (3) washing the macroporous adsorption resin after step (2) with water; (4) desorbing the macroporous adsorption resin after step (3) with a good solvent of benzotriazole to obtain a desorption liquid; (5) filtering the desorption liquid obtained in step (4) to obtain a filtrate; (6) feeding the filtrate obtained in step (5) to a biochemical pool for treatment.

This invention discloses a mathematical model establishment method based on the combination of static adsorption and desorption of macroporous resin and HPLC. The capacity factor is extracted by combining static adsorption and desorption of macroporous resin with HPLC technology, and a mathematical model is established to optimize the conditions of pH and ethanol concentration gradient of the eluent. The efficient separation and purification of seven polyphenolic compounds from Smilax glabra are achieved by using offline two-dimensional macroporous resin column chromatography and preparative high performance liquid chromatography.

The present application relates to a kind of preparation method of catalyst for low concentration CO2 reduction based on macroporous resin and electroplating wastewater, the catalyst obtained by the preparation method, using macroporous adsorption resin as raw material, by atomic level uniform dispersion heavy metal Ni, and adding sodium stearate, using temperature programming means and changing carbonization atmosphere, the structure of heavy metal coordination in catalyst can be controlled, form the catalytic site mainly with pyridine N3-heavy metal, preparation can be used to reduce non-pure CO2 Single-atom level catalyst.The catalyst has good conductivity, and CO2 in 10%-100% concentration can be efficiently reduced to CO, with the measure of reverse potential, the efficient and stable operation of catalyst system can be realized, and the system stability can be extended by one time.

This invention discloses a polyurea-functionalized macroporous adsorption resin microsphere material and its applications. Specifically, macroporous adsorption resin microspheres are used as the matrix, and terephthalic diisocyanate and tri-(2-aminoethyl)amine are used as functional monomers. Through isocyanate-amine polymerization and epoxy-amine ring-opening reaction, a polyurea-rich crosslinked network is bonded and coated onto the surface of the resin microspheres, resulting in surface polyurea-functionalized macroporous adsorption resin (MAR@PUP) microspheres. The surface of MAR@PUP microspheres is rich in urea groups, which can recognize phosphorylation sites in peptides through multiple hydrogen bonds. Based on the differences in phosphorylation degree and the regulation of enrichment conditions, highly selective enrichment of monophosphorylated peptides and polyphosphorylated peptides can be achieved, especially showing excellent enrichment performance for polyphosphorylated peptides.

This invention discloses a method for preparing an acrylic macroporous anion exchange resin, comprising the following steps: 1) preparation of macroporous white spheres; 2) amination reaction; 3) transformation and post-treatment. This invention utilizes a synergistic technical solution of "rosin-based monomer-reinforced framework + composite porogen to construct a hierarchical porous structure + composite amination," resulting in anion exchange resin with good anion exchange capacity and heavy metal chelating ability, excellent synergistic treatment effect on multiple pollutants in complex wastewater, good thermal stability, high mechanical strength, good pore-forming effect, and high specific surface area. Furthermore, the entire preparation method involves mild reaction conditions, is easy to scale up for production, and has significant industrial application value.

The utility model relates to the technical field of waste gas treatment, and disclose a macroporous resin adsorption device for waste gas treatment, including purification cylinder and for adsorption's adsorption filter cylinder, the side surface fixed mounting of purification cylinder has the air inlet pipe, the right side of purification cylinder is provided with the air outlet pipe, the inner wall fixed mounting of adsorption filter cylinder has connecting rod, the control assembly is arranged in purification cylinder and adsorption filter cylinder, the control assembly includes: support rod, this macroporous resin adsorption device for waste gas treatment, through being provided with control assembly, the support rod of adsorption filter cylinder bottom is inserted into the fixed ring, the articulated movable block of support rod surface when colliding to the through -hole, can under the action of torsional spring and fold, from the through -hole into the fixed ring and under the action of torsional spring and bounce, with the through -hole forms cross interlaced shape, through the clamping block restriction support rod moves out, thereby can complete the quick installation of adsorption filter cylinder and purification cylinder, avoided the inconvenience brought by the removal shell.

The present application relates to the technical field of catalyst, and discloses a macroporous alumina formed carrier and a selective hydrogenation catalyst as well as a preparation method and application thereof.The carrier preparation process is simple, has higher pore volume, pore diameter and lower bulk density, so that the catalyst prepared by using the carrier has the advantages of high activity, good selectivity, strong water resistance, less green oil generation, low temperature rise in the reaction process, long catalyst service life and the like, can effectively convert acetylene components in C4 fraction into olefins, and improve the utilization rate of acetylene components in C4 fraction and enterprise benefits.