35 results about "Imidodiacetic acid" patented technology

The application relates to the technical field of lithium ion batteries, and discloses a silicon-carbon nanotube composite material, which is obtained by dehydration of hydroxylated silicon particles, hydroxylated carbon nanotubes and iminodiacetic acid. The silicon-carbon nanotube composite material provided by the application can anchor the silicon particles on the carbon nanotubes through covalent bond action, can increase the uniformity of dispersion of the carbon nanotubes and the silicon particles, can improve the electron transmission capacity, can play a certain counterforce on the volume expansion force of the silicon particles, can reduce the generation of electrode cracks, can further reduce the consumption of electrolyte, and can improve the cycle stability of the whole electrode. Meanwhile, the preparation method provided by the application does not need a complex operation process, has simple process condition requirements, and is suitable for large-scale production.

Provided is a technology for more effectively adsorbing scandium by suppressing the amount of chromium adsorbed onto a chelate resin in an ion exchange treatment of an acidic solution containing scandium and impurities including chromium using the chelate resin.　The present invention comprises an ion exchange treatment step for passing an acidic solution containing scandium and impurities including chromium through a column filled with an iminodiacetic acid-type chelate resin to adsorb the scandium onto the chelate resin, wherein, in the ion exchange treatment step, the acidic solution is passed in the range of 40-70ºC, and when the amount of the scandium adsorbed onto the chelate resin is qSc and the maximum amount of the scandium adsorbed onto the chelate resin is qmax,Sc, the passed liquid amount BV in which qSc / qmax,Sc is 0.5 is defined as a lower limit value and the value of the passed liquid amount BV in which the apparent separation factor αapp,Cr(III) Sc(III), defined by the relationship between the scandium and the chromium contained in the acidic solution, is 1 is defined as an upper limit value, and the passed liquid amount BV of the acidic solution is set in the range of the lower limit value to the upper limit value.

The invention belongs to the technical field of pharmaceutical chemicals, and particularly relates to a method for preparing guanidinoacetic acid from glycine mother liquor. Based on a glycine-cyanamide method, a glycine solution containing iminodiacetic acid is used as one of reaction raw materials. When the method is used for preparing the guanidinoacetic acid, the glycine mother liquor can be directly used for preparing the guanidinoacetic acid, so that the mother liquor is directly treated, the separation step of the glycine mother liquor is omitted, and the process is simplified. Moreover, the method has an unexpected technical effect on the improvement of the yield of the guanidinoacetic acid, and the yield of the guanidinoacetic acid is improved by 6.2-6.4% compared with the prior art.

The invention relates to an adsorbing material for blood perfusion and a preparation method thereof. The preparation method comprises the following steps: providing a hydrophobic porous carrier which comprises styrene-divinyl benzene copolymer microspheres, and introducing a coordination group on the surface of the hydrophobic porous carrier through chemical modification. The average pore size of the hydrophobic porous carrier is 2-50 nm, and the specific surface area of the hydrophobic porous carrier is greater than or equal to 500 m < 2 > / g; the coordination group is selected from at least one of iminodiacetic acid (IDA), ethylenediaminetetraacetic acid (EDTA) and N, N, N-tricarboxymethyl ethylenediamine (TED). The prepared adsorption material is high in A beta removal capacity, has certain removal capacity on heavy metal ions, is good in blood compatibility and excellent in anticoagulation performance, and is an ideal material for preparing a blood perfusion device.

The invention discloses polymer resin for removing metal impurities in a cyanide-free electroplating cadmium solution as well as a preparation method and a use method of the polymer resin, and relates to the technical field of functional materials. The invention relates to a polymer resin for removing metal impurities in a cyanide-free electroplating cadmium solution. The polymer resin comprises a polymer matrix, cyclodextrin covalently crosslinked to the polymer matrix and a functionalized functional group for functionally modifying the polymer matrix, the functionalized functional group comprises an iminodiacetic acid group, a sulfydryl group and an amido group. According to the invention, cyclodextrin is introduced into a polymer matrix through covalent cross-linking, then three functional groups with high metal affinity are used for modification, and through the inclusion effect of cyclodextrin and the targeted collaborative design of the three functional groups, the ability of polymer resin to selectively capture metal impurities is enhanced; even in the environment of competing with EDTA, NTA and other strong chelating agents, the metal impurities can still be effectively combined and removed by breaking the competition barrier.

The present invention provides a technology that suppresses the amount of chromium adsorbed onto a chelate resin during ion exchange treatment performed on an acidic solution containing scandium and chromium using the chelate resin, thereby achieving more effective adsorption of scandium.　The present invention includes an ion exchange treatment step in which an acidic solution that contains scandium and impurities including chromium is passed through a column filled with an iminodiacetic acid type chelate resin so as to cause scandium to be adsorbed onto the chelate resin. In the ion exchange treatment step, the acidic solution is passed at a temperature in the range of 15°C to 45°C. When the adsorption amount of scandium onto the chelate resin is qSc and the maximum adsorption amount of scandium onto the chelate resin is qmax, Sc, the passed amount BV of the acidic solution at which qSc / qmax, Sc = 0.5 is defined as a lower limit value, and the passed amount BV of the acidic solution at which the maximum adsorption amount of scandium onto the chelate resin, i.e., qmax, Sc, is achieved is defined as an upper limit value, and the passed amount BV of the acidic solution is set within a range between the lower limit value and the upper limit value.

This invention provides a MoTi film composite etchant composition, relating to the field of metal film etching technology. The composite etchant composition comprises hydrogen peroxide, ammonium hydrogen fluoride, a weak organic acid, a corrosion inhibitor, cis-1,4-cyclohexanedicarboxylic acid, 3-amino-1,2,4-triazole, a complexing agent, iminodiacetic acid, an organic alcohol, and water; and the ratio of ammonium hydrogen fluoride to cis-1,4-cyclohexanedicarboxylic acid is ≥0.2. This invention overcomes the shortcomings of existing technologies, effectively improving the etching efficiency of MoTi films while reducing erosion of adjacent metal layers, achieving precise control of the etching rate, ensuring etching stability, and significantly improving product yield.

The invention discloses an etching solution for alloy surface treatment and a preparation method thereof, and relates to the field of etching solutions. The preparation method comprises the following steps: firstly, preparing mesoporous titanium dioxide by a sol-gel method, modifying the mesoporous titanium dioxide by an amino coupling agent, loading green tea polyphenol and preparing a self-made corrosion inhibitor from konjac glucomannan grafted with quaternary ammonium groups, adsorbing dopamine by utilizing electrostatic interaction, and polymerizing to form pH response hydrophilic particles; in the etching process, when the solution is slightly acidic, the corrosion inhibitor is released to inhibit excessive etching; meanwhile, carboxymethyl cellulose is grafted with sulfonic acid groups, N-(phosphonomethyl) iminodiacetic acid modified chitosan is used for preparing complexing agents A and B, and after compounding, the complexing agents A and B are mixed with components such as hydrophilic particles to obtain etching liquid; the compound complexing agent can form a strong coordination bond with metal ions and can also be chelated with heavy metal ions; chitosan, phosphonic acid groups and hydrophilic particles cooperate with one another, so that the surface hydrophilicity of the alloy is improved, and hydrolytic precipitation and scale attachment are effectively inhibited. The prepared etching liquid for alloy surface treatment has the effects of high efficiency and uniform etching.

The invention discloses a zinc ion battery electrolyte for in-situ induction of a double-layer solid electrolyte interface, the electrolyte comprises a solvent and an additive, the solvent comprises a zinc sulfate solution, and the additive comprises iminodiacetic acid (IDA) and zinc trifluoromethanesulfonate Zn (OTF) 2. The invention also discloses an application of the electrolyte in a zinc ion battery. The zinc ion battery electrolyte provided by the invention can realize in-situ construction of a stable and anti-dissolution dual-function SEI on the surface of a zinc metal negative electrode, so that dendritic crystal growth, side reaction and interface failure are inhibited, the cycle life of a zinc battery is prolonged, and the safety of the zinc battery is improved.

The application relates to an iminodiacetic acid type chelating resin and a preparation method and application thereof, and the preparation method comprises the following steps: (1) in the case that the stirring speed is 200-350 r / min, two dispersants are dissolved in water, then ethylbenzene, glycidyl methacrylate, trimethylolpropane trimethacrylate, isooctane and di-t-butyl peroxide are added, the raw materials are reacted after ultrasonic mixing, centrifugal separation is carried out after the reaction is completed, the filter cake is cleaned and dried, and resin microspheres are obtained; (2) in the stirring state, the resin microspheres obtained in the step (1) are added into water, then iminodiacetic acid is added, stirring is continued, then preliminary reaction is carried out by heating, NaOH is further added, reaction is carried out by heating, after the reaction is completed, filtration, cleaning and drying are carried out, and the iminodiacetic acid type chelating resin is obtained. The chelating resin particle size can be controlled, the particle size is relatively large, the specific surface area is large, the adsorption capacity is high, and the chelating resin can be used for adsorbing lead ions in heavy salt matrix.

This invention discloses a method for preparing a retarder for acid fracturing. The retarder is obtained by copolymerizing a nonionic water-soluble monomer, a silicon-containing monomer, an organic acid adsorbent monomer, and a hydrophobic monomer in an anhydrous organic solvent. After the reaction, the resulting product is directly used as an additive in the working fluid without the need for separation and drying. The organic acid adsorbent monomer contains an iminodiacetic acid structure, which chelates with Ca on the surface of carbonate rocks. 2+ Stable adsorption; after hydrolysis, the silicon-containing monomers condense with hydroxyl groups on the rock surface to form chemical bonds, while the condensation and cross-linking between silicon and hydroxyl groups construct a multi-layer network structure; the hydrophobic monomer is an allyl polyoxyethylene alkyl ether, which forms a hydrophobic barrier on the adsorption film surface through hydrophobic association. The resulting retarder, through the synergistic effect of four mechanisms—chelation adsorption, chemical bonding, multi-layer film formation, and hydrophobic shielding—can reduce the acid rock reaction rate by more than 90% at 150°C and in 20% hydrochloric acid, making it suitable for high-temperature carbonate rock acid fracturing operations.

The application discloses a preparation method of methyl xylene phenol blue free acid, which comprises the following steps: (1) adding 2-sulfobenzoic acid cyclanth and 2, 5-dimethyl phenol into a pressure-resistant reaction container, and performing a methylation reaction under the catalysis of a proton acid, wherein the reaction temperature is 100-120 DEG C, the reaction time is 10-20 h, water is added after the reaction is completed, heating is performed to 50-70 DEG C, and the temperature is kept for 1-3 h, and then hot filtration is performed to obtain dimethyl phenol blue; (2) in a reaction container, sodium iminodiacetic acid dihydrate is heated to 40-60 DEG C under the condition of glacial acetic acid, and then cooled to room temperature and stirred, and then dimethyl phenol blue and formaldehyde solution are added, and then stirring is performed at room temperature for 1-3 h, and then heating is performed to 40-60 DEG C to react for 6-10 h, and then hot filtration is performed, and then the reaction solution is added into the first reaction solution, and then crystallization is performed, and then filtration is performed to obtain methyl xylene phenol blue free acid. The application has the advantages of simple operation, convenient source, high product purity and good application prospect.

The present disclosure provides a method for purifying an organic amine, the method comprising: introducing a resin polymer matrix into a liquid containing at least an organic amine bonded to at least one metal element, wherein the resin polymer matrix is embedded with an amino compound selected from the group consisting of iminodiacetic acid, aminomethylphosphonic acid, or a combination thereof, and wherein the embedded resin polymer matrix binds the at least one metal element, and removing the at least one metal element from the organic amine.

The invention discloses a method for detecting raw materials, impurities and products in a methylglycine trisodium diacetate reaction solution. The method comprises the following steps: respectively preparing a lactic acid, iminodiacetic acid, dimer and MGDA mixed standard substance solution, a sodium 2-chloropropionate standard substance solution and a sample solution, determining the solutions by utilizing high performance liquid chromatography, and calculating the contents of iminodiacetic acid, dimer, lactic acid MGDA and 2-chloropropionic acid in the sample solution according to a single-point external standard method; the calculation formula is as follows. The detection method is high in analysis accuracy, can be applied to central control analysis of the MGDA synthesis process, can be used for tracking the reaction process and material balance of the synthesis process for preparing MGDA from 2-chloropropionic acid, and is of great significance to quality control of MGDA.

The present invention is generally directed to improved processes for the preparation of various phosphorus oxides and phosphoric acid. Phosphorus oxides prepared in accordance with the present invention include phosphorus (III) oxides (e.g., tetraphosphorus hexaoxide (P4O6)). Phosphorus (III) oxides such as P4O6 are useful products and are also useful as precursors in preparation of other products, including phosphorous acid (H3PO3) and other phosphorus-containing chemicals. Certain aspects of this invention are also directed to using various byproducts formed during P4O6 production as precursors for the formation of phosphoric acid (H3PO4) and P2O5. In particular, the present invention is directed to improved processes for the preparation of phosphorus (III) oxides (e.g., P4O6) suitable for use in the preparation of phospho-herbicides such N-(phosphonomethyl)glycine (glyphosate) and precursors thereof (e.g., N-(phosphonomethyl)iminodiacetic acid (PMIDA)). The present invention is thus further directed to preparation of these compounds.

The invention belongs to the technical field of preparation of rare earth nano materials, and particularly discloses a preparation system and method of nano cerium oxide and high-dispersity nano cerium oxide. The preparation system comprises an organic complexing agent and a surface modifier; the organic complexing agent is at least one of polyaspartic acid and derivatives thereof, polyglutamic acid, ethylenediamine disuccinic acid, iminodiacetic acid and sodium alginate; the surface modifier is a silane coupling agent. The preparation method comprises the following steps: preparing a cerium source precursor solution; adding an organic complexing agent and a surface modifier; regulating and controlling the pH value; and washing, aging, drying, grinding and calcining. The nano cerium oxide is prepared by the method. According to the invention, the organic complexing agent is combined with in-situ surface modification, and the complexing mechanism and the preparation process are optimized, so that high dispersity, uniform particle size distribution and controllable synthesis of the nano cerium oxide particles are realized, meanwhile, the harm of the process to the environment is reduced, and the operation process is simplified so as to adapt to industrial production requirements.

The invention relates to the technical field of lithium recovery, in particular to imine diacetic acid-based chelate resin as well as a preparation method and application thereof. The imino diacetic acid chelate resin realizes separation of the imino diacetic acid chelate resin and the sodium and lithium relying on the function of functional groups and the difference of hydration radiuses of the lithium and the sodium, and the lithium adsorbability is slightly higher than that of the sodium. When the resin is saturated by adsorption, a hydrochloric acid solution slowly passes through the resin column, the hydrochloric acid solution can replace lithium ions and sodium ions adsorbed on the resin, but due to the fact that the resin has different selectivity on the lithium ions and the sodium ions, the sodium ions can be analyzed more quickly than the lithium ions with higher selectivity, and a better lithium-sodium separation effect is achieved.

The application provides a metabolic marker combination for early kidney cancer diagnosis and application thereof, and belongs to the technical field of in vitro diagnosis. The metabolic marker combination for early kidney cancer diagnosis comprises a first combination or a second combination. The first combination comprises glycyl-L-glutamic acid, L-glutamyl-L-serine, methylphosphatidylcholine 33:2e and triglyceride 54:7. The second combination comprises glycyl-L-glutamic acid, L-glutamyl-L-serine, L-threonyl-L-aspartic acid, iminodiacetic acid, triglyceride 56:8, O-phosphoethanolamine, methylphosphatidylcholine 33:2e and triglyceride 54:7. By detecting the metabolic marker combination in a blood sample, it can be determined whether a patient has early kidney cancer, has high sensitivity and specificity, can realize precise screening of early kidney cancer, and provides important help for prevention and reduction of the incidence of kidney cancer.

To provide a technique which more effectively adsorbs the scandium, in ion exchange treatment using a chelate resin to an acidic solution containing scandium and impurity containing chromium.SOLUTION: A method for producing a scandium compound includes an ion exchange treatment step of passing an acidic solution containing scandium and impurity containing chromium through a column filled with an iminodiacetic acid type chelate resin, and adsorbing the scandium to a chelate resin, wherein the step passes the acidic solution which is set at 40°C to 70°C therethrough, when the adsorption amount of the scandium to the chelate resin is represented by qSc and the maximum adsorption amount of the scandium to the chelate resin is represented by qmax,Sc, the liquid passage amount BV having qSc / qmax,Sc of 0.5 is defined as a lower limit value, and a value of the liquid passage amount BV having an apparent separation coefficient αapp,Cr(III)Sc(III) defined by a relation between the scandium and the chromium contained in the acidic solution of 1 is defined as an upper limit value, the liquid passage amount BV of the acidic solution is set to be in the range between the lower limit value and the upper limit value.SELECTED DRAWING: Figure 1

The invention discloses a lysosome targeting fluorescent probe compound based on a hydrogen peroxide response group protection mechanism. The lysosome targeting fluorescent probe compound comprises a naphthalimide fluorophore, a morpholine group and an N-methyl iminodiacetic acid borate (MIDA borate) protection structure. The morpholine group endows the lysosome with targeting ability, the MIDA borate improves the blood circulation stability, and the naphthalimide fluorophore generates a fluorescence signal after responding to H2O2. The synthesis method comprises the steps of synthesis of a naphthalimide precursor, introduction of a morpholine group and protection of MIDA borate. The probe can specifically recognize H2O2, the lowest detection limit reaches 0.25 mu M, the probe can target HeLa cell lysosome and realize high-sensitivity detection, and the cytotoxicity is low. Response group protection and targeting functions are creatively combined, the problems that an existing probe is poor in blood circulation stability and insufficient in detection specificity are solved, and the probe has important practical value in the fields of disease mechanism research, early diagnosis, medicine research and development and the like.

The invention discloses a novel bimetallic carbon material, a low-temperature synthesis method thereof and application of the novel bimetallic carbon material to ammonia production through nitrate radical reduction, and the method comprises the following steps: adding iminodiacetic acid type chelate resin (such as Mitsubishi chemical CR11 chelate resin) into a copper salt solution and a salt solution of an iron-series element to obtain a metal ion exchange precursor; drying the metal ion exchange precursor at room temperature for a period of time; mixing the dried metal ion exchange precursor according to a certain proportion, putting into a crusher, and crushing into powder; putting the powder into a tablet press for tabletting, putting a sample in an air-water vapor atmosphere after tabletting, and treating at 150-200 DEG C for 1-4 hours to finally prepare the bimetallic carbon material. The prepared bimetallic carbon material has high dispersity and excellent electro-catalytic performance, and the preparation process is simple, green and energy-saving, and has industrial application prospects.

The present invention is generally directed to improved processes for the preparation of various phosphorus oxides and phosphoric acid. Phosphorus oxides prepared in accordance with the present invention include phosphorus (III) oxides (e.g., tetraphosphorus hexaoxide (P4O6)). Phosphorus (III) oxides such as P4O6 are useful products and are also useful as precursors in preparation of other products, including phosphorous acid (H3PO3) and other phosphorus-containing chemicals. Certain aspects of this invention are also directed to using various byproducts formed during P4O6 production as precursors for the formation of phosphoric acid (H3PO4) and P2O5. In particular, the present invention is directed to improved processes for the preparation of phosphorus (III) oxides (e.g., P4O6) suitable for use in the preparation of phospho-herbicides such N-(phosphonomethyl)glycine (glyphosate) and precursors thereof (e.g., N-(phosphonomethyl)iminodiacetic acid (PMIDA)). The present invention is thus further directed to preparation of these compounds.

The invention discloses an alkalescent zinc-based flow battery negative electrode electrolyte and a preparation method thereof. The alkalescent zinc-based flow battery negative electrode electrolyte comprises zinc salt, deionized water and a complexing agent, wherein the complexing agent is one or more of 2-phosphonobutane-1, 2, 4-tricarboxylic acid, triethylene tetramine, glycine, diethyl ethylenediamine, lysine, N-(phosphoryl methyl) iminodiacetic acid, iminodiacetic acid, hydroxyethylidene diphosphoric acid, iminodisuccinic acid, N-(phosphoryl methyl) glycine, glycolic acid, nitrilotrimethylene phosphoric acid and alendronic acid. According to the invention, the problems that the zinc-based flow battery negative electrode is easy to form dendritic crystals and delay hydrogen evolution and other side reactions during zinc deposition are solved, the reversibility of the zinc negative electrode in the cycle process is improved, the cycle life of the alkalescent zinc-based flow battery is prolonged, and meanwhile, the total battery voltage can also be improved.

This invention discloses a radiation-shielding flexible material and its preparation method, relating to the field of radiation-shielding flexible material technology. In preparing the radiation-shielding flexible material, the invention involves treating a protective powder with γ-chloropropyltriethoxysilane to obtain a pre-modified protective powder; reacting the pre-modified protective powder with a composite antibacterial agent to obtain a modified protective powder; reacting phenylphosphoyl dichloride sequentially with diethyl iminodiacetic acid, ethylenediamine, and benzothiazole-2-carboxaldehyde to obtain a phosphorus-nitrogen-sulfur flame retardant; mixing the modified protective powder, the phosphorus-nitrogen-sulfur flame retardant, and thermoplastic polyurethane, using N,N-dimethylformamide as a dispersant, to prepare a protective slurry; coating the protective slurry onto the surface of a fabric and drying to obtain the radiation-shielding flexible material. The radiation-shielding flexible material prepared by this invention can protect against radiation while also possessing excellent flame-retardant and antibacterial properties.

The present invention discloses an immunoassay method for effectively reducing steric hindrance by directionally binding to the Fc site of an antibody. The method comprises the following steps: (1) mixing N-(5-amino-1-carboxypentyl)iminodiacetic acid with a nitrilotriacetic acid and nickel ions to form a chelating ligand; (2) mixing the chelating ligand with an Fc receptor carrying a His tag. The advantages of the present invention are that by directionally binding to the Fc site of the antibody, the Fab region of the antibody is fully exposed, thereby effectively reducing the steric hindrance between the antibody and the binding site, and significantly improving the sensitivity and linearity of the traditional sandwich immunoassay method.

The application relates to the technical field of electroplating liquid and electronic connector terminal surface treatment, and discloses a palladium-nickel alloy electroplating liquid and a preparation method and application thereof, wherein the electroplating liquid comprises palladium ions provided by tetraammine palladium sulfate, nickel ions provided by nickel sulfamate, ammonium sulfamate, ammonium sulfate, a ladder complex release component composed of glycine, sodium citrate, N-(2-hydroxyethyl) iminodiacetic acid disodium, ethylenediamine disuccinic acid trisodium and polyaspartic acid sodium, L-proline, sodium 1,2,4-triazole-3-carboxylate and a micro-area wetting component. Through cooperation of the components, the application can reduce the edge enrichment deposition and grain boundary pore defects of a high-speed connector contact area, and improve the contact stability of a palladium-nickel alloy plating layer.

The invention provides a low-nickel system in-situ complexation electronic-grade iminodiacetic acid refining system, and relates to the technical field of iminodiacetic acid preparation, the refining system integrates in-situ induced complexation, supergravity precipitation and separation, a nanometer gradient screening unit and a developing line cleaning coupling module, a nickel ion solvation layer is stripped through a high-frequency cavitation generator, and a high-purity product is obtained. A nickel complexing precursor is generated through induction of a functionalized filler layer, a horizontal asymmetric rotating drum is used for generating a super-gravity field not lower than 3000g to achieve forced liquid-solid separation, and a multi-layer ceramic composite membrane with the pore diameter gradually decreased from 1 micron to 5 nm is matched with a self-assembled monomolecular membrane to conduct physical interception and chemical adsorption dual refining. The system is assisted by on-line quality monitoring and self-adaptive reflux logic, so that the nickel ion concentration of the produced liquid is stably maintained at an extremely low level of less than or equal to 10ppb, the problems of low reaction activity of nickel in an extremely dilute solution, difficulty in separation of colloidal impurities, precipitation of equipment metal and the like are effectively solved, and a purity guarantee is provided for an advanced semiconductor process.

The invention provides an aluminum etching solution capable of compatibly etching Al / Mo and Mo / Al / Mo structures, which comprises the following components in percentage by mass: 55-70% of phosphoric acid, 1-8% of nitric acid, 10-24% of acetic acid, 0.1-10% of additive and the balance of water. The additive is formed by mixing alkali metal salt and an organic additive according to the mass ratio of (1-8): 1. The alkali metal salt is selected from one or more of potassium nitrate, potassium phosphate, sodium nitrate and sodium acetate. The organic additive is selected from one or more of 3-hydroxybutyric acid, N-(2-acetamido)-iminodiacetic acid, ammonium lactate and 4-methyl-2-pentanone. The etching solution provided by the invention can be compatible with metal laminations of Al / Mo and Mo / Al / Mo structures, the production efficiency can be improved, and the cost can be reduced.

The invention relates to a preparation method of diisopropylamine silane, and belongs to the technical field of synthesis of organosilicon compounds. The method comprises the following steps: under the protection of argon, adding a solvent into a reactor, slowly dropwise adding a lithium diisopropylamide solution, and controlling the dropwise adding speed to control the reaction temperature at-5 to 0 DEG C; under the condition of continuous stirring, slowly dropwise adding iodosilane; after dropwise adding, heating the reaction system, and continuously stirring for reaction; and after the reaction is completed, adding aminocarboxylic acid-MOF composite chelating resin, stirring, filtering to remove insoluble substances, carrying out reduced pressure distillation to remove the solvent, and finally, carrying out rectification purification to obtain high-purity diisopropylamine silane. The amino carboxylic acid-MOF composite chelating resin is prepared from chloromethylated resin, zirconium aminobenzenedicarboxylate (MOF), dichloroethane, disodium iminodiacetate, 2-amino-1, 3, 5-triazine and sodium hydroxide, and the amino carboxylic acid-MOF composite chelating resin is prepared from the chloromethylated resin, zirconium aminobenzenedicarboxylate (MOF), dichloroethane, disodium iminodiacetate, 2-amino-1, 3 The purity of the prepared diisopropylamine silane reaches 99% or above, and the purity grade of metal ions reaches 6N grade.

The invention relates to the field of isopropyl alcohol preparation, and discloses a method for preparing electronic grade isopropyl alcohol, which comprises the following steps: (1) contacting propyl alcohol and hydrogen in the presence of a catalyst, and reacting to obtain an isopropyl alcohol crude product; (2) carrying out de-ionization, dehydration and degranulation on the isopropanol crude product; wherein the mode of the detacher is that the isopropanol crude product is subjected to column chromatography through a chelating resin column, an acidic cation exchange resin column and an alkaline anion exchange resin column; the resin in the chelating resin column is iminodiacetic acid type resin, the resin in the acidic cation exchange resin column is sulfonic acid type cation exchange resin, and the resin in the alkaline anion exchange resin column is quaternary ammonium type anion exchange resin. The method provided by the invention is simple in process and relatively low in energy consumption, and can effectively improve the content of isopropanol in the product and reduce the content of water, zwitterions and particles.