18 results about "Aminotroponiminate" patented technology

This invention belongs to the field of analytical detection technology and relates to a method for detecting estradiol using a combination of organometallic framework enrichment and enzyme-linked immunosorbent assay (ELISA). A magnetic organometallic framework solid-phase extractant is used to enrich estradiol in the sample, followed by detection of the enriched estradiol using ELISA. The magnetic organometallic framework solid-phase extractant is prepared by subjecting mercaptoacetic acid-modified Fe3O4 particles, zirconium salt, and 2-amino-terephthalic acid to a solvothermal reaction at 110–130°C for 22–26 hours. The detection method provided by this invention has advantages such as short detection time, high sensitivity, good specificity, and high accuracy, thereby enabling the detection of trace amounts of estradiol in environmental water samples.

The application provides a 2-amino terephthalic acid dimethyl ester-tetracyano benzene eutectic crystal as well as a preparation method and application thereof, the eutectic crystal is of a triclinic system, a space group is a cell parameter is alpha = 95.041 (2) °, beta = 90.337 (2) °, gamma = 97.670 (2) °, and a cell volume is The 2-amino terephthalic acid dimethyl ester-tetracyano benzene eutectic crystal provided by the application increases the solid melting point of the organic compound from 133.39 DEG C to 162.23 DEG C without changing the covalent bond of the compound, enhances the thermal stability, and meanwhile, the fluorescence emission color, the fluorescence lifetime and the quantum yield are obviously changed.

This invention discloses a method and application for the industrial-scale preparation of zirconium-based composite nano-metal oxides based on MOF morphology, belonging to the field of zirconium-based multi-component composite material preparation and its application in new energy batteries. Porous zirconium dioxide is obtained by reacting 2-aminoterephthalic acid with zirconium oxychloride followed by pyrolysis to create pores. Then, a soluble salt containing magnesium, iron, and aluminum is uniformly precipitated into the reactant to prepare a zirconium-based ternary precursor material. Finally, the product is obtained through rapid plasma sintering. This method, based on MOF morphology inheritance and multi-level structure design of composite oxides, innovatively synthesizes a novel nano-additive for lithium-ion batteries. The zirconium-based composite nano-metal oxide product prepared by this invention exhibits uniform particle morphology distribution, high sphericity, and a high specific surface area. Furthermore, when used as a cathode material additive, this zirconium-based composite nano-metal oxide can improve the electrochemical performance of ternary lithium batteries.

This invention belongs to the field of membrane separation technology and discloses an ultrathin composite membrane with an interpenetrating network framework structure, its preparation method, and its application. The preparation method includes: pouring a zirconium metal solution onto the surface of a PSf base membrane, allowing metal ions to adsorb onto the PSf membrane surface; then immersing the other side of the PSf membrane in a ligand solution of 2-aminoterephthalic acid and triethylamine for a coordination reaction; after the reaction is complete, removing the membrane and placing it under suitable temperature and humidity conditions; as the organic solvent and triethylamine molecules on the membrane surface volatilize, the metal ions and organic ligands on the membrane surface complete heterogeneous nucleation and growth, forming a pure MOF membrane; finally, based on the amino group carried by the selected UiO-66-NH2, immersing an organic monomer solution onto the surface of the prepared MOF membrane, allowing interfacial polymerization reactions to occur on the MOF membrane surface and within the crystallites, thereby obtaining an ultrathin composite membrane with an interpenetrating network framework structure, which can be applied in the fields of CH4 / N2 separation and dye / salt separation.

This invention provides a multi-component MTV-UiO-66 and its synthesis method, belonging to the field of metal-organic framework (MOF) material synthesis technology. The method involves mixing ZrOCl2·8H2O, terephthalic acid, and a modified ligand in a container. The resulting solution is then added to a solvent, followed by a regulator, and stirred thoroughly to dissolve and form a homogeneous solution. The modified ligand is selected from one or a mixture of 2-aminoterephthalic acid and 2-nitroterephthalic acid. The homogeneous solution is transferred to a reaction vessel, which is then placed in an oven for reaction. After post-treatment, multi-component MTV-UiO-66 is obtained. This invention achieves precise control of the pore microenvironment by introducing one or more different functional groups into the MOF framework, enabling the material to possess diverse active sites and selectively bind specific guest molecules, thus meeting the application requirements for special functional materials in multiple fields such as catalysis, adsorption, and separation.

This invention relates to a method for preparing porous indium powder. The method uses indium nitrate tetrahydrate as the indium source, 2-aminoterephthalic acid as the main ligand, and 1-butylimidazole as the auxiliary ligand, dissolved sequentially in N,N-dimethylformamide at a molar ratio of 1:(1.2-1.5):(0.1-0.2). Indium-based MOF powder is synthesized through a stepwise high-pressure reaction. The MOF powder is then placed in an argon-hydrogen mixed gas atmosphere and reduced by stepwise temperature increases to prepare a composite precursor indium particles embedded in a carbon matrix. Finally, the composite precursor indium particles embedded in the carbon matrix is ​​dispersed in an acetic acid and citric acid etching solution, intermittently ultrasonically etched, filtered, washed, and dried to obtain porous indium powder. This invention can improve the specific surface area and ion / electron transport efficiency of indium powder, reduce oxygen content, and reduce indium powder agglomeration, thereby improving the adsorption performance and catalytic activity of indium powder.

The application provides a 2-amino terephthalic acid dimethyl ester eutectic crystal as well as a preparation method and application thereof, the eutectic crystal is of a triclinic system, a space group is, a cell parameter is, alpha = 100.928 (2) °, beta = 98.038 (2) °, gamma = 106.164 (2) °, and a cell volume is 0. 734 0 (3) nm3. The 2-amino terephthalic acid dimethyl ester-tetracyano benzene eutectic crystal provided by the application increases the solid melting point of the organic compound from 133.39 DEG C to 161.80 DEG C without changing the covalent bond of the compound, enhances the thermal stability, and meanwhile, the fluorescence emission color, the fluorescence lifetime and the quantum yield are all changed.

This invention discloses a method for preparing a bipolar membrane intermediate catalyst layer material, comprising the following steps: S1, mixing 2-aminoterephthalic acid, dimethyl terephthalate, and ferric chloride in a certain proportion, grinding them into particles with a diameter of 1-5 nm and ensuring thorough mixing to obtain a composite support powder; S2, placing the composite support powder in a container, adding N,N-dimethylformamide, and simultaneously adding transition metal oxides and graphene to obtain a raw material slurry; S3, introducing the raw material slurry into a reaction vessel, adding a catalytic medium, heating to 120-130℃ and a pressure of 0.8-1.5 MPa for thorough reaction, and cooling to room temperature; S4, washing and drying the reaction product, pressing it into a thin sheet to obtain the bipolar membrane intermediate catalyst layer material. This invention improves the catalytic site density of the bipolar membrane intermediate layer, enhances the bonding strength between the intermediate layer and the two adjacent anion and cation layers, and reduces ion migration resistance.

This invention discloses a carbon-based copper single-atom catalyst modified with copper atom clusters and its preparation method. Cu-ACs / SAs uses 2-aminoterephthalic acid as a carbon-based precursor and is prepared by inducing Cu with ammonia water. 2+ It was prepared by self-assembly with 2-aminoterephthalic acid and combined with molten salt calcination. During the self-assembly process, ammonia water not only provided an alkaline environment to force the deprotonation of 2-aminoterephthalic acid, but also strengthened its reaction with Cu. 2+ The chemical coordination of the catalyst also promotes the formation of self-assembled compounds. Persulfate activation and pollutant degradation experiments show that Cu-ACs / SAs can efficiently activate persulfate and degrade organic pollutants under near-infrared light induction, exhibiting excellent stability and recyclability. The catalyst of this invention has a simple preparation process, significant catalytic effect, and high stability, demonstrating broad application potential.

This invention relates to the field of water treatment chemicals, and is used to solve the problem that existing water treatment chemicals are unable to remove substances such as Pb from water. 2+ Cd 2+ To address the technical problem of heavy metal ion contamination, this invention provides a water pollution treatment agent and its preparation method. The preparation method includes the following steps: synthesizing MOFs using aluminum chloride hexahydrate and 2-aminoterephthalic acid; using crown ether and povidone K30 as auxiliary agents; and modifying the MOFs with tannic acid. This water pollution treatment agent can effectively adsorb and absorb heavy metal ions, reducing their content. It is suitable for various types of polluted water bodies, protecting the ecological environment. Furthermore, the method for preparing the water pollution treatment agent is simple and easy to operate.

The application discloses a gallium metal organic framework material, which is prepared through the following steps: (1) dissolving 2-amino terephthalic acid and itaconic acid in an organic solvent to obtain solution A; (2) dissolving gallium nitrate hydrate in an organic solvent to obtain solution B containing gallium ions; and (3) mixing solution A and solution B, heating under the condition of 50-70 DEG C for 3-5 hours, centrifuging and collecting the precipitate, and purifying to obtain the gallium metal organic framework material. The gallium metal organic framework material is constructed by combining itaconic acid and 2-amino terephthalic acid as a double ligand and taking gallium ions as a metal node, so that the technical problems of short biological half-life and low cell uptake efficiency of free itaconic acid are solved, the itaconic acid and the gallium ions are coordinated to play an anti-inflammatory and antibacterial role, to remove planktonic bacteria, and to have strong antibiofilm activity, and the gallium metal organic framework material can be used for preparing a drug for treating pyogenic arthritis.

The application belongs to the field of high polymer materials, and particularly discloses a kind of adsorption filler, low odor nylon composite material and its preparation method, wherein the preparation method of adsorption filler comprises: strontium salt and 2-amino terephthalic acid are added into mixed solvent, and mixed solution is obtained by stirring reaction;Mesoporous titanium dioxide is added into mixed solution, and stirring reaction is carried out;After washing, filtering and drying, TiO2 / Sr-MOF-NH2 adsorption filler is prepared.The mesoporous titanium dioxide in the adsorption filler prepared by the application has significant porosity, thereby being beneficial to adsorption and diffusion of organic small molecule substances;In addition, the adsorption filler also has rich chemical groups of hydroxyl and amine group, these groups can interact with organic small molecule substances for adsorption, thereby improving the adsorption performance of the material.

This invention provides a hydrogel in which zirconium-based MOFs are dispersed; the zirconium-based MOFs are loaded with carbon nanotubes coated with polydopamine; the organic ligand of the zirconium-based MOFs is 2-aminoterephthalic acid; and unsaturated metal sites are present in the zirconium-based MOFs. The CNT / MOF composite hydrogel provided by this invention achieves a synergistic enhancement of multiple properties through the synergistic combination of dopamine-modified CNTs, MOFs, and the hydrogel. This synergistic effect, while retaining the lightweight properties of the material, achieves multifunctional integration of electromagnetic protection, mechanical strain, and sensing performance, perfectly meeting the application requirements of new electronic devices and effectively solving the problem of unbalanced comprehensive performance of existing materials.

The invention provides a composite nanofiltration membrane as well as a preparation method and application thereof, and belongs to the technical field of nanofiltration membranes. The preparation method comprises the following steps: taking terephthalic acid and amino terephthalic acid as organic ligands, carrying out coordination reaction on the organic ligands and zirconium salt to obtain an NH2-UIO-66 material, and mixing the NH2-UIO-66 material with a polycation electrolyte to obtain the polycation electrolyte containing an amino structure; the preparation method comprises the following steps: respectively mixing a polyanion electrolyte and a polycation electrolyte containing an amino structure with a solvent to obtain a polyelectrolyte solution with opposite charges; a layer-by-layer self-assembly method is adopted, polyelectrolyte solutions with opposite charges are adopted for alternate coating treatment on the flat ultrafiltration membrane, a polyelectrolyte coating is formed, and the composite nanofiltration membrane is obtained. According to the preparation method disclosed by the invention, a composite separation layer with an ordered multi-layer structure, a regular channel structure and ideal interface stability is constructed by utilizing a spontaneous assembly process driven by entropy increase among polyelectrolytes, high throughput is realized while a high rejection rate is guaranteed, and the high-performance composite nanofiltration membrane is obtained.

This invention relates to the field of coating preparation technology and discloses a high-solids epoxy paint and its preparation method. The epoxy paint uses bisphenol-type epoxy resin as a matrix, compounded with modified mica iron oxide, grafted graphene, and metal-organic framework nanocrystals as synergistic fillers, supplemented with reactive diluents, special additives, and Mannich base-modified phenolic amine curing agents. First, the mica iron oxide is surface-modified with silane, and the graphene oxide is grafted with glycidyl ether. Then, metal-organic framework nanocrystals are prepared by a solvothermal reaction of metal salts and 2-aminoterephthalic acid. Subsequently, the three modified fillers are mixed with resin, diluent, and additives through stepwise high-speed shearing. Finally, the mixture is stirred evenly with a curing agent to obtain the high-solids epoxy paint. This improves the coating's salt spray corrosion resistance, adhesion, and mechanical hardness, providing a stable and durable protective system suitable for corrosion protection of metal structures in harsh corrosive environments such as marine and chemical plants.

The application discloses a kind of bifunctional adsorbents and its preparation method and application, preparation method includes the following steps: S1.Preparation metal organic framework carrier: with and 2-amino terephthalic acid as raw material, DMF and HAc are mixed solvent, in the reaction kettle heating reaction preparation;S2.Load silver nanoparticles: carrier and silver nitrate are proportionally put into DMF solvent, room temperature is stirred and dispersed without light, then hydrothermal reaction preparation;S3.Load two-dimensional sheet layer indium zinc sulfide: after the carrier of loaded silver nanoparticles is dispersed in water, adjust pH to acidity, add appropriate amount of glycerol, proportionally add and TAA after stirring, fully stir, heat reaction, obtain.The advantage is that the preparation process is simple, and the adsorbent prepared can efficiently adsorb water vapor and heavy metal ions, and has potential application in electronic special gas separation and purification.

This invention relates to the field of water treatment and adsorption materials, and particularly to a highly stable cerium-aluminum bimetallic MOF, its preparation method, and its application in phosphorus-containing wastewater. The preparation method of this highly stable cerium-aluminum bimetallic MOF includes the following steps: mixing cerium salt, aluminum salt, organic ligand, and solvent, reacting the mixture, cooling and separating the resulting product after the reaction to obtain a solid product; and then freeze-drying the solid product under vacuum to obtain the highly stable cerium-aluminum bimetallic MOF. This invention significantly enhances the stability of the MOF by introducing cerium and aluminum to construct dual active centers, and achieves high adsorption capacity and rapid adsorption kinetics by using 2-aminoterephthalic acid containing an amino functional group as the organic ligand.