90 results about "Amine ligands" patented technology

The application discloses a kind of sulfonic acid group covalent organic framework / Nafion composite material for proton conduction and preparation method and application thereof, belong to fuel cell technical field.The application first utilizes double sulfonic acid group organic aromatic amine ligand and aldehyde group ligand to construct a kind of sulfonic acid functional two-dimensional covalent organic framework material COF-(SO3H)2 by condensation reaction.COF-(SO3H)2 is compounded with Nafion polymer to prepare proton exchange membrane, and the proton exchange membrane material has excellent proton conduction, and the proton conductivity is 1.338*10 ‑1 S·cm ‑1 (80ºC).The proton exchange membrane material of the application is prepared by solvothermal process and casting method, and the preparation method is simple and easy to operate, which provides a new choice for proton conduction material in fuel cell, and expands the application value of covalent organic framework material.

The invention relates to application of an amide ligand and a copper catalyst in preparation of an amino indazole piperidine compound. The indazole piperidine compound is prepared by reacting a halogen-substituted indazole piperidine compound with an ammonia reagent, the reaction is carried out under the action of an amide ligand and a catalyst, the amide ligand is # imgabs0, the structural formula of the amide ligand is # imgabs1 # or L-hydroxyproline, and the catalyst is a cuprous compound.

The embodiment of the invention provides an electrolyte, a preparation method thereof and an aqueous zinc ion battery, the electrolyte comprises a zinc salt and an electrolyte additive, the electrolyte additive comprises a complex formed by an amine ligand and a reducing metal, and the activity of the reducing metal is weaker than that of zinc. When the electrolyte is applied to the aqueous zinc ion battery, the hydration degree and the deposition overpotential of the zinc ion can be reduced, the reversible reaction can be promoted, and a stable protection layer can be generated on the surface of a zinc negative electrode, so that the zinc dendrite growth and the corrosion side reaction are inhibited, the stability of the zinc negative electrode is improved, and the cycling stability of the aqueous zinc ion battery is improved.

The invention discloses a continuous preparation method of a platinum bulk drug, which comprises the following steps: by taking chloroplatinite as a starting material, in a reaction environment of taking water as a solvent, replacing the starting material with iodized salt to obtain iodoplatinite, and then adding an amine ligand to quickly react to generate an intermediate-cis-diiodo-platinum-amine complex; introducing the solid-liquid mixed system containing the intermediate into a filtering and washing device, filtering and washing, directly discharging the solid into a reaction kettle, adding silver salt and water, reacting completely, and filtering; and concentrating the filtrate to obtain a crude product of the target product, and recrystallizing the crude product to obtain the platinum bulk drug. Or reacting the filtrate with a leaving group (or a salt formed by the leaving group) of the target compound, concentrating, filtering and washing to obtain a crude product of the target product, and recrystallizing the crude product to obtain the platinum bulk drug. The production efficiency and quality consistency of the product can be improved, the process amplification flow is simplified, the production cost and material consumption are reduced, green manufacturing is realized, and the method is an optimal choice for industrial production of platinum bulk drugs.

The invention relates to a rare earth metal tungstate nanosheet material as well as a preparation method and application thereof. The rare earth metal tungstate nanosheet material comprises a PO4 < 3->-LnWO4 nanosheet, and Ln is at least one of lanthanide series rare earth metals. The preparation method comprises the following steps: dissolving phosphotungstic acid and a precursor in a solvent, and stirring to form a solution; adding an organic amine ligand, and stirring to form a transparent solution; performing solvothermal reaction on the solution; and centrifuging, washing with ethanol and drying to obtain the rare earth metal tungstate nanosheet material. A solvothermal reaction method is adopted to successfully construct a two-dimensional sheet structure material formed by interweaving nanowires, the material has high specific surface area, abundant pores and excellent structural stability, and the problems that a traditional photocatalytic material is single in structure and insufficient in active site are effectively solved. The photocatalyst shows excellent degradation capability on various typical antibiotic pollutants, breaks through the limitation that most photocatalytic materials are only effective on single pollutants, and realizes relatively high pollutant degradation universality.

Described herein is a process for performing amidation of polyolefins including reacting a polyolefin, a copper catalyst, an amide, a ligand and an oxidant. Specifically, polyethylene may be reacting to have a degree of amide incorporation of about 0.01 mol % to about 4.75 mol % based on monomer units.

The invention discloses a nitrogen-containing inorganic-organic hybrid material and a preparation method thereof, and belongs to the technical field of inorganic-organic hybrid materials. In order to solve the problems of low nitrogen content, few chemical bonds formed by inorganic ions and nitrogen and high price of used nitrogen-containing organic ligands in the existing nitrogen-containing inorganic-organic hybrid material preparation technology, the invention provides a method for preparing a nitrogen-containing inorganic-organic hybrid material by using organic amine (H2N-R-NH2, in which R is alkyl) at least containing two terminal-NH2 groups as a nitrogen source. A precursor with the structure of Mx < + > (NH-R-NH2) n (n represents the number of organic amine ligands) is formed through aminolysis reaction of-NH2 groups and inorganic cations (Mx < + >, x represents the valence state of the inorganic cations), and then the nitrogen-containing inorganic-organic hybrid material with the structure of (m center coordination cation number) is formed through polymerization reaction between the precursor and the organic amine ligands. The preparation method has the advantages of simple process flow, no use of expensive organic raw materials and solvent systems, good economical efficiency and good industrial application prospect.

This invention discloses a method for synthesizing a mordenite molecular sieve-encapsulated metal catalyst for the synthesis of ester compounds, comprising the following steps: 1) mixing a water-soluble metal salt sequentially with an amine ligand and an alkali metal hydroxide to obtain a preliminary mixture solution; 2) mixing the preliminary mixture solution sequentially with an aluminum source and a silicon source to obtain a gel; 3) crystallizing the gel at 160–180 °C, cooling after crystallization, and separating to obtain an initial solid; 4) drying and calcining the obtained initial solid to obtain a preliminary molecular sieve; 5) placing the preliminary molecular sieve in an inorganic ammonium salt solution for ion exchange, separating the reactants after ion exchange to obtain a solid, drying and calcining the solid to obtain a mordenite molecular sieve-encapsulated metal catalyst for the synthesis of ester compounds. The catalyst obtained by this synthesis method can be used for the carbonylation of dimethyl ether to produce methyl acetate, exhibiting a relatively fast reaction rate while maintaining a high conversion rate of dimethyl ether.

The invention discloses a mixed ligand modified cesium lead halide perovskite nanocrystal and a preparation method thereof, and the preparation method comprises the following steps: (1) adding CsBr and PbBr2 in an equal molar ratio into a P-AMDL polymer solution to obtain a CsPbBr3 precursor solution; (2) injecting the precursor solution into a toluene solvent, and then settling and purifying by using an n-hexane solvent to obtain a P-AMDL modified CsPbBr3 solution; (3) introducing an oleic acid oleylamine ligand to obtain CsPbBr3 modified by a mixed ligand; and (4) optimizing an ion exchange method by combining a mixed ligand strategy to obtain the mixed ligand modified CsPbBrxI3-x. According to the invention, the problem of wide particle size distribution of nanocrystals synthesized by an LARP method at room temperature is solved, and the all-inorganic cesium-lead halide perovskite nanocrystals with fewer defects, more regular morphology and better ultraviolet stability are successfully prepared. The'micromolecule + polymer 'mixed ligand strategy gives consideration to the regulation and control precision of the micromolecule ligand and the stability of the polymer ligand, and is an effective means for optimizing the morphology and performance of the perovskite nanocrystal.

The invention relates to the technical field of organic synthesis, in particular to a preparation method of 3, 4, 5-trimethyl-1, 3 The invention discloses a preparation method of 3, 4, 5-trifluoro-2 '-nitrobiphenyl, which comprises the following steps: taking 2-chloro (or bromo) nitrobenzene (III) and 3, 4, 5-trifluorophenylboronic acid or ester (II) thereof as raw materials, carrying out Suzuki coupling in the presence of alkali and under the synergistic catalysis of a trace amount of palladium catalyst and pyridine diamine ligand to obtain a corresponding target product TM, and replacing the raw material II with diaryl hypoboric acid (IV) or a mixture of the diaryl hypoboric acid (II) and the diaryl hypoboric acid (IV). According to the method, only a trace amount of palladium catalyst (less than or equal to 0.001 mol%) needs to be used, the raw materials are easy to obtain, separation and purification are easy, the comprehensive cost is low, and the industrial value is high.

The invention relates to the technical field of porous materials, and discloses preparation of an amino-functionalized porous organic cage and application of the amino-functionalized porous organic cage in acetylene / carbon dioxide gas separation. The preparation method comprises the following steps: introducing a triamine ligand, and directionally modifying amino in a cavity of a porous organic cage, so that the adsorption capacity and separation selectivity of the material to C2H2 / CO2 are improved, complete separation of C2H2 / CO2 can be realized, and the cycle stability is excellent. The porous organic cage material has wide application prospects in the fields of acetylene purification, carbon capture and the like.

The invention provides a chiral lead sulfide quantum dot and a preparation method thereof.The preparation method of the chiral lead sulfide quantum dot comprises the following steps that S1, a lead precursor solution is provided, and a lead precursor comprises at least one of chiral CsPbBr3 quantum dots and (R-MBA) PbBr3; s2, dissolving sulfur in the organic amine ligand to obtain a sulfur precursor; s3, mixing the lead precursor solution with the sulfur precursor, and stirring and reacting at room temperature to obtain a crude solution; s4, the crude solution is purified, centrifuged and dried, and the chiral lead sulfide quantum dots are obtained. The chiral lead sulfide quantum dot can be rapidly synthesized at room temperature in an air environment, the conditions are mild, the efficiency is high, the cost is low, and the chiral lead sulfide quantum dot is good in dispersity and stable in property.

The present application provides a class of hydroxyl-substituted pyridine-2-carboxylic acid amide ligands and their use in copper-catalyzed aryl halide coupling reactions. Specifically, the present application provides a class of hydroxyl-substituted pyridine-2-carboxylic acid amide ligands and their use; wherein the definitions of each group are as described in the specification. The ligands are used in a catalytic system for copper-catalyzed cross-coupling reactions of aryl halides (particularly aryl chlorides) with aromatic amine compounds.

A method for depletion or removal of endotoxins from a known or suspected endotoxin-containing source by virtue of a solid phase extraction material in an essentially aqueous system comprising the steps of—providing a known or suspected endotoxin-containing source, —contacting the known or suspected endotoxin-containing source with a positively charged solid phase material having a surface on which ferric iron is immobilised, wherein the solid phase extraction material has immobilised the ferric iron by (2-aminoethyl)amine (TREN) ligand—incubating the known or suspected endotoxin-containing source for a period of time sufficient to bind endotoxin to the porous solid phase material, —separating the solid phase material from the essentially aqueous system, —optionally isolating the essentially aqueous system freed or depleted from endotoxin.

The invention relates to the technical field of catalysts, in particular to a copper-based covalent organic framework nanosheet catalyst, a preparation method of the copper-based covalent organic framework nanosheet catalyst and an application method of the copper-based covalent organic framework nanosheet catalyst in electro-catalysis of nitric oxide to synthesize ammonia. The preparation method comprises the following steps: firstly, uniformly mixing a pyrazole amine ligand, cuprous oxide, ethanol and pyridine, then carrying out circulating degassing treatment, and then putting the mixture in a vacuum environment for reaction to obtain a copper-based amine ligand; and dissolving the copper-based amine ligand, adding trifluoroacetic acid, uniformly mixing, adding an aldehyde ligand solution, carrying out post-treatment after reaction, and carrying out ultrasonic stripping to obtain the copper-based covalent organic framework nanosheet catalyst. The catalyst has fully exposed active sites and an adjustable local reaction microenvironment, and has the advantages of excellent electro-catalysis nitric oxide ammonia synthesis activity, high ammonia yield and Faraday efficiency, good catalytic stability and the like.

The invention discloses a pure bromine-based multiband composite sky-blue light colloidal quantum dot material and a synthesis method thereof, and belongs to the field of metal halide luminescent materials. According to the method, a composite ligand containing oleylamine and 3-aminopropyltriethoxysilane is adopted to carry out cooperative regulation and control on the reaction of a lead source, a zinc source and a cesium source. Specifically, the quantum dot material is prepared in a single reaction system through a thermal injection method. The material can generate at least three independent emission peaks within the range of 435-445 nm, 460-468 nm and 475-485 nm under exciting light of 365 nm, the three independent emission peaks are compounded to form sky blue light, and the photoluminescence quantum yield of the material can exceed 60%. Due to the existence of the silane-containing organic amine ligand, the material has excellent water stability, for example, the material can still keep higher photoluminescence quantum yield after 30 minutes in an environment with 100% relative humidity. According to the invention, the problems of single luminescence peak and poor stability of the existing blue-light perovskite material are solved.

The present invention provides an imine-amine complex, a double-ligand imine-amine nickel complex, a preparation method, a nickel-based catalyst, and applications. The imine-amine ligand compound has the structure shown in Formula III below; wherein R1 is a methyl group, a phenyl group, or a tert-butyl group; and R2 is a hydrogen group, a methyl group, or a methoxy group. The nickel complex formed by the imine-amine ligand compound coordinated with nickel can be used as a primary catalyst to directly catalyze ethylene polymerization in the presence of a co-catalyst to produce a low-molecular-weight, highly branched polyethylene oil. This polyethylene oil has a narrow molecular weight distribution, a high degree of branching, stable performance, a low pour point, a high viscosity index, and excellent stability and viscosity-temperature performance, making it suitable for use in place of high-quality PAO lubricant base oils. #imgabs0#

The invention discloses a preparation method of 2-(alkyl / aryl R substituted) acyl-1, 10-phenanthroline, a condensation amine ligand and a condensation amine transition metal complex and a composite catalyst. 1, 10-phenanthroline and a lithium diisopropylamide reagent are subjected to ortho-lithiation reaction and then subjected to nucleophilic reaction with an alkyl / aryl carboxylic acid compound, and the compound shown in the formula (a) is obtained. The nontoxic lithium diisopropylamide reagent (LDA) is adopted to be subjected to non-nucleophilic ortho-lithiation reaction, and a traditional synthesis reaction containing highly toxic cyanide is replaced; an expensive nucleophilic reagent such as aluminum alkyl or lithium alkyl is replaced; the 2-(alkyl / aryl R substituted) acyl-1, 10-phenanthroline amine transition metal complex as shown in the formula (e), which is prepared and synthesized by replacing nitrobenzene and toxic selenium dioxide with a cheap and nontoxic carboxylic acid compound, has stronger ligand skeleton expansibility and higher compound stability, and is convenient for storage of a catalyst.

The invention relates to the technical field of catalysts, in particular to a composite catalyst containing a combined ligand and application of the composite catalyst, and the composite catalyst at least comprises the combined ligand, a palladium-based bimetallic catalyst and an organic solvent, the combined ligand at least comprises a bidentate phosphine ligand, an N-heterocyclic carbene ligand and an amine ligand, the efficiency problem of a catalyst in the reaction process is effectively solved through efficient ligand combination, the yield is increased, the cost is reduced, and industrial application is facilitated.

The present application relates to the technical field of water-absorbing materials, and particularly relates to a water-absorbing MOF material containing sulfonic acid groups and a preparation method and application thereof. The preparation method comprises the following steps: respectively taking metal salt, carboxylic acid sulfonic acid amine ligand and first carboxylic acid ligand, mixing the metal salt, the carboxylic acid sulfonic acid amine ligand and the first carboxylic acid ligand in a solvent, sealing and placing in a 120-180 DEG C environment for 12-24 hours, washing the obtained reaction product with pure water, then washing with N,N-dimethylformamide and alcohol respectively, and drying to obtain the water-absorbing MOF material. The water-absorbing MOF material containing sulfonic acid groups not only improves the moisture absorption performance of the material in a low-humidity environment, but also reduces the energy consumption in the desorption process, thereby bringing a more efficient and more economical solution to a rotary dehumidification system, and helping to reduce the energy consumption in industrial applications while maintaining or improving the dehumidification efficiency.

This invention belongs to the field of iodine adsorption material technology, and discloses a method for synthesizing and applying a highly efficient iodine adsorption material. The synthesis method includes: S1, adding an organic aldehyde ligand to a container, adding a solvent, and stirring to completely dissolve the aldehyde ligand; S2, slowly adding the above solution dropwise to an organic amine ligand solution to completely mix it with the amine ligand; S3, sealing the above mixed solution and stirring at room temperature until the color deepens; S4, after the reaction is complete, separating the reaction solution into small glass vials, tightening the caps, loosening them by half a turn, and placing them in a protective atmosphere; after several days of gas-liquid diffusion, visible crystals form at the bottom of the glass vials. The synthesized adsorption material has applications in volatile and radioactive iodine. The crystalline adsorption material synthesized by this invention has good stability, high adsorption efficiency for iodine, and a fast adsorption rate, and can be used for nuclear waste treatment and the capture of radioactive iodine.

The invention discloses a high-enthalpy-value metal-organic coordination material as well as preparation and application thereof, and belongs to the field of phase change energy storage. According to the metal-organic coordination material, transition metal nitrate is coordinated with acethydrazide in a small molecule amide ligand to obtain a series of metal-organic coordination materials. The material realizes the synergistic effect of a hydrogen bond network and a metal coordination bond, so that the material has the advantages of high phase change temperature, large enthalpy value and the like. Compared with a traditional phase change material, the phase change material has excellent thermodynamic property and thermal stability. The device can be applied to the field of heat management of high-power equipment, has the advantages of high energy storage density, low material consumption and the like, and has wide application prospects.

The invention relates to the technical field of nano materials, in particular to an amine ligand modified Yb < 3 + > doped CsPbCl3 nano crystal material and a preparation method thereof.The preparation method comprises the following steps that soluble Pb salt, soluble Yb salt, a cesium acetate ethanol solution, an amine ligand, oleic acid and octadecene are mixed, and a mixed reaction solution is obtained; the preparation method comprises the following steps: preparing a mixed reaction solution, heating the mixed reaction solution in a protective atmosphere, adding a mixed solution containing trimethylchlorosilane and ODE, terminating the reaction in an ice-water bath to obtain a turbid liquid, and centrifuging the turbid liquid to obtain the amine ligand modified Yb < 3 + > doped CsPbCl3 nanocrystal material. Along with the reduction of the amine chain length, the morphology of the nanocrystal is converted into a nanosheet from a nanocube, and the prepared crystal material has higher luminous efficiency and stability.

The invention relates to the field of polyester catalysts, and discloses a high-thermal-stability double-ligand chelating type polyester titanium catalyst as well as a preparation method and application thereof. The catalyst comprises the following raw materials: ethylene glycol titanium ester, a ligand I and a ligand II, the ligand I is one of an amino carboxylic acid ligand and an alcohol amine ligand, and the ligand II is a hydroxy carboxylic acid ligand; the catalyst is prepared by carrying out coordination reaction on ethylene glycol titanium ester by adopting a ligand I and a ligand II, according to the present invention, the hydrolysis resistance of the catalyst is significantly improved, the viscosity of the polyester product prepared from the catalyst is only reduced to 0.04-0.05 dL / g after the polyester product is treated at the temperature of 200 DEG C for 12 h, the thermal stability is significantly improved, the b value of the polyester product prepared from the catalyst is 5.12-5.5, and the yellowing effect of the polyester product is significantly reduced.

The application discloses a tridentate phosphine pyrroline ligand, a preparation method thereof, an ethylene oligomerization catalyst and application of the catalyst. The catalyst comprises the tridentate phosphine pyrroline ligand shown in a structure of formula I, a transition metal compound and an alkyl aluminum promoter. The catalyst system can be used for homogeneously catalyzing ethylene oligomerization, and has the advantages of a short catalyst synthesis route, high catalytic activity, and selective generation of 1-octene or 1-hexene by adjusting the amount of the alkyl aluminum promoter.

The invention is applicable to the technical field of biomass catalysis, and provides a polymer catalyst for efficiently catalyzing hydrogenation of levulinic acid to prepare gamma-valerolactone. According to the polymer catalyst for efficiently catalyzing hydrogenation of levulinic acid to prepare gamma-valerolactone, a metal complex with a sawhorse structure is used as an active center, the metal center is combined with a coordination group through a stable covalent bond or coordination bond, the metal center is preferably ruthenium or osmium, and the polymer catalyst is suitable for a high-pressure reaction kettle reactor equipped with magnetic stirring or mechanical stirring; the catalyst has the advantages of easily available raw materials, low cost, simple preparation, no need of phosphine ligand and amine ligand, high efficiency catalysis of levulinic acid hydrogenation under mild conditions to prepare gamma-valerolactone, easy separation and recycling, good recycling performance, no need of complex equipment, convenient large-scale production, and good industrial application prospects.

The invention provides a stable-ligand CdSe / ZnS quantum dot based on multiple binding sites, a preparation method of the stable-ligand CdSe / ZnS quantum dot and a carrier-injection-free LED device. According to the scheme, the alanine modified long-chain alkylamine ligand is used, alanine endows the ligand with more sites which are mutually combined with the surfaces of the quantum dots, on one hand, more binding sites can passivate surface defects of the CdSe / ZnS quantum dots and improve the luminous efficiency, and on the other hand, the stability of the quantum dots can be improved; the prepared modified quantum dots can be applied to injection-free electroluminescent devices driven by a high-frequency alternating-current electric field.

The invention discloses a silane coupling agent and a preparation method and application thereof.The silane coupling agent contains a naphthyl acylhydrazone structure, H in naphthyl in the naphthyl acylhydrazone structure is substituted by-O-R-Si-X3, R is alkane with the carbon number of 1-7, X is a group capable of being hydrolyzed into silanol, and during preparation, the hydroxyl-substituted naphthyl acylhydrazone is dissolved in an organic solvent, and the solution is stirred to be uniform; adding halogenated silane, an inorganic base, a catalyst and an amine ligand, introducing nitrogen to carry out substitution reaction, and treating after the reaction is finished. The preparation method of the silane coupling agent is simple, the silane coupling agent is applied to a rubber material to remarkably improve the dispersion of white carbon black and enhance the interface effect, and the heat generation phenomenon of a composite material is inhibited.

The invention relates to the technical field of medicinal chemistry, in particular to a preparation method of a lung-targeting tertiary amine modified honokiol derivative, which is characterized in that a series of novel derivatives are synthesized by introducing a tertiary amine ligand into honokiol molecules and adopting an ester bond, carbamate bond or ether bond covalent linkage mode. The water solubility and metabolic stability of honokiol are effectively improved, the in-vivo half-life period of honokiol is remarkably prolonged, the lung tissue targeting characteristic of the tertiary amine ligand is utilized, selective enrichment of the derivative in the lung is achieved, and the selectivity of the derivative in the lung is improved. Therefore, the technical problem that honokiol is difficult to reach and maintain an effective treatment concentration at a target site due to poor pharmacokinetic properties is solved. Wherein the ether bond connected derivative HM-16 shows excellent anti-tumor activity, good tolerance and prolonged in-lung residence time, and a potential candidate drug is provided for targeted therapy of lung cancer.

The present application relates to oil and gas well reservoir reconstruction technical field, especially to a kind of salt-tolerant efficient polyamine boron crosslinking agent and preparation method thereof, the present application is dispersed by divergent method and is dispersed to synthesize dendritic polyamino-amine ligand, then reacts with borate, the salt tolerance of crosslinking agent is improved by the complexing ability of polyamino-amine structure to metal ion, forms multiple crosslinking points, and then the crosslinking strength with guar gum is improved, the complexity of crosslinking structure is increased, the temperature and shear resistance of fracturing fluid is improved.