135 results about "Divalent metal" patented technology

The present invention provides a grease composition and an axle bearing in which the grease composition is sealed.SOLUTION: The grease composition of the present invention contains a base oil, a thickener, and an additive, the additive contains an organic metal salt of a divalent metal and an inorganic metal salt of a divalent metal, the total mass of the metal content of the organic metal salt and the metal content of the inorganic metal salt is 1.00% by mass or more based on the grease composition, and the metal content of the organic metal salt with respect to the total mass of the metal content of the organic metal salt and the metal content of the inorganic metal salt is 0.20 or more on a mass basis.SELECTED DRAWING: None

The present application provides an adhesive composition for a polarizing film, which contains a cationic trapping agent having a coordination site capable of coordinating a metal component with 2 or more teeth, and a reactive group. In particular, the present application provides a polarizing film having a polarizer, and an adhesive layer adjacent to the polarizer or an optical film other than the polarizer, wherein the adhesive layer is a cured product layer of the adhesive composition for a polarizing film. It is preferable that the polarizer contains a metal component capable of becoming a divalent metal cation in water.

The invention discloses a bimetallic oxide supported catalyst as well as a preparation method and application thereof. The bimetallic oxide supported catalyst comprises a bimetallic oxide carrier and a metal active component supported on the surface of the bimetallic oxide carrier; the bimetallic oxide carrier contains a divalent metal element oxide and a trivalent metal element oxide; the divalent metal element oxide is selected from at least one of oxides of Mg, Ca, Sr, Zn and Mn; the trivalent metal element oxide is selected from at least one of oxides of Al, In, Fe, Cr and Ce; the metal active component is selected from at least one of Pd, Pt, Ru, Ni and Co; in the bimetallic oxide supported catalyst, the mass of the metal active component is 0.1-20 wt% of the mass of the metal oxide carrier.

The invention relates to a ZnAl-LDH-based material as well as a preparation method and application thereof in sludge treatment. The ZnAl-LDH-based material is prepared from a divalent metal salt solution and a trivalent metal salt solution through a coprecipitation method, divalent metal comprises Zn and Cu, and trivalent metal is Al; the molar weight ratio of the divalent metal to the trivalent metal is (1-3): 1, and the ratio of the molar weight of Cu to the total molar weight of the divalent metal is (0-0.5): 1. The ZnAl-LDH-based material is used for promoting the organic sulfide in the sludge to be converted into sulfoxide sulfur and sulfone sulfur. Compared with the prior art, a series of ZnAl-LDH-based materials with proper specific surface areas and pore volume structures are prepared, and low-valence organic sulfides in municipal sludge can be promoted to be directionally converted into sulfoxide sulfur and sulfone sulfur; the method has a wide application prospect in the field of improving the high-added-value utilization of organic sulfide-containing wastes such as municipal sludge.

This invention provides a method for forming a perovskite material from multiple evaporation sources. [Solution] In the present invention, (i) a first evaporation source comprising a mixture of co-sublimable organic halides, and (ii) a second evaporation source comprising one or more metal halides having the following formula (I), wherein B(X y X' 1-y )2(i) a method is provided which comprises the steps of co-sublimating a second evaporation source, where B is a divalent metal cation, X and X' are different halides, 0 ≤ y < 1, and (iii) one or more different organic halides from one or more other evaporation sources, and / or (iv) one or more inorganic halides from one or more other evaporation sources, wherein the perovskite material comprises three or more different cations in addition to the B cation.

This invention discloses a method and system for selective separation of monovalent and divalent ions in an alginate fiber coagulation bath based on electrodialysis, belonging to the field of fiber production and membrane separation technology. The method and system integrate a selective electrodialysis device into a traditional coagulation bath circulation system. Utilizing an ion exchange membrane with monovalent and divalent cation selectivity, sodium ions accumulated in the coagulation bath are selectively migrated and removed under the action of an electric field, while divalent metal ions are efficiently retained, thereby maintaining a stable molar ratio of divalent ions to sodium ions in the coagulation bath within the required process range. Compared to traditional methods, this invention eliminates the need for large-scale replenishment of divalent metal salts or full replacement solution, significantly reducing production costs and resource waste. It achieves online regeneration and continuous circulation of the coagulation bath, significantly improving production stability, fiber quality, and resource utilization efficiency, and is suitable for the green and efficient production of various alginate fibers.

The invention discloses a method for testing the content of trivalent metal elements in a metal oxide, and belongs to the technical field of chemical analysis. The method comprises the following steps: firstly, reducing trivalent metal elements in a sample into divalent metal elements by using a reducing agent ammonium ferrous sulfate in a strong acid environment, wherein unreacted ammonium ferrous sulfate remains in a system; then, potassium permanganate is adopted for titration of unreacted ammonium ferrous sulfate, the end point is based on the fact that the solution becomes light pink and keeps color fastness for 15 seconds, and meanwhile a blank solution is set to eliminate system background interference; by comparing the difference between the blank titration volume and the sample titration volume and combining the titration concentration and the sample mass, the content of the trivalent metal elements in the sample can be accurately calculated. The method has the advantages of simplicity and convenience in operation, strong anti-interference capability, high detection precision and wide application range, is suitable for various metal oxide material systems, and is particularly suitable for quality control and performance analysis of new energy materials and catalysts.

The invention provides a positive electrode active material and a preparation method and application thereof, and belongs to the field of batteries. The positive electrode active material provided by the invention comprises layered double hydroxides, and the chemical formula of the layered double hydroxides is [M < 12 + x > M < 23 + y > M < 34 + z > (OH) 2 (x + y + z)] (A < n->) (y + 2z) / n.mH2O, m < 12 + > is a divalent metal cation, M < 23 + > is a trivalent metal cation, and M < 34 + > is a tetravalent metal cation; x is 1-4, y is 0-4, z is 0-4, and (y + z) is 1-4; m = 1-2, and n = 1-3; the interlayer spacing of the layered double hydroxide is equal to that of the positive electrode active material, the material structure stability in the oxidation-reduction reaction process can be maintained, the proper interlayer spacing is beneficial to reversible storage migration and intercalation / deintercalation of carbonate ions, and the electrochemical oxidation-reduction reaction and directional storage and conversion of charges are achieved.

The invention discloses a light-induced self-cleaning high-flux high-adhesion oil-water separation membrane and a preparation method thereof, the method comprises the following steps: S1, preparing a metal-polyphenol porous coordination polymer suspension, and drying to obtain a metal-polyphenol porous coordination polymer solid; s2, divalent metal nitrate polyhydrate, trivalent metal nitrate polyhydrate and PCP are mixed in water, alkali liquor is dropwise added to adjust the pH to be neutral, LDHs grow on the surface of a PCP solid in situ, and LDHs-PCP is obtained; s3, performing plasma treatment on the substrate filter membrane; and S4, dispersing LDHs-PCP in water, and carrying out suction filtration on the dispersion liquid onto the plasma modified substrate filter membrane to obtain the light-induced self-cleaning high-flux high-adhesion oil-water separation membrane. The oil-water separation membrane disclosed by the invention has high flux, super-hydrophilicity and underwater super-oleophobicity; the oil-water separator has high mechanical strength and illumination self-cleaning capability, and can stably operate for a long time in a high-strength oil-water separation process.

The application relates to the technical field of organic synthesis, and discloses an organic sulfinate salt composition, a preparation method and application thereof and the composition. The preparation method comprises the following steps: contacting a monovalent organic sulfinate salt shown in formula I with a divalent metal salt or a salt of a metal with a valence higher than two under the condition that a poor solvent exists; the organic sulfinate salt prepared by the method has high yield and high purity, almost no sulfinate salt by-product is generated, the method has the advantages of simple operation, safe and easily-obtained reaction raw materials, rapid reaction, no need of recrystallization, the target product can be obtained through filtration after the reaction, less solvent is used, the cost is low, etc., the composition has the beneficial effects that the composition is more stable than a corresponding sodium salt, the sulfur odor is reduced, the composition has strong reducing capacity, etc.

The invention relates to the technical field of lithium-sulfur batteries, in particular to a preparation method of a graphene carbon nanotube hybrid material and a lithium-sulfur positive electrode material. The preparation method of the graphene carbon nanotube hybrid material provided by the invention comprises the following steps: S1, mixing a graphene oxide solution and a divalent metal salt solution to obtain a mixed solution; s2, mixing a carbon source, a nitrogen source and a precipitator, adding the mixed solution obtained in the step S1 into the mixture, and performing hydrothermal reaction and solid-liquid separation to obtain an intermediate; and S3, carrying out carbonization, washing and solid-liquid separation on the intermediate to obtain the graphene carbon nanotube hybrid material. By utilizing the characteristic that the surface of the graphene oxide has abundant and uniformly distributed polar functional groups, divalent metal ions can be uniformly adsorbed, so that in-situ grown carbon nanotubes in a hydrothermal reaction are more uniformly distributed, a sulfur storage space is increased, a rapid example and electron transmission channel is created, and electrochemical reaction kinetics is increased.

Aqueous treatment compositions for crude oil and / or petroleum distillates to remove sulfur compounds therefrom and treatment methods using such compositions are disclosed. The composition has less than 0.5% wt / wt di- or tri-benzohydroxy compound, a strong base, less than 1% wt / wt divalent metal gluconate, a balance of water, and a pH that is 9 or greater. The treatment method includes adding said treatment composition to crude oil or a petroleum distillate to form a mixture having 0.001% to 0.02% wt di- or tri-benzohydroxy compound / wt oil and 0.001% to 0.03% wt divalent metal gluconate / wt oil and mixing the same together.

Photoactive materials comprising organic-inorganic hybrid halide perovskite compounds are provided. Photovoltaic cells and light-emitting devices incorporating the photoactive materials into their light-absorbing and light-emitting layers, respectively, are also provided. The halide perovskites have an amAMX3 perovskite crystal structure, wherein am is an alkyl diamine cation, an aromatic diamine cation, an aromatic azole cation, a cyclic alkyl diamine cation or a hydrazinediium cation; A is a monovalent alkylammonium cation or an alkali metal cation; X is a halide ion or a combination of halide ions; and M is an octahedrally coordinated bivalent metal atom.

The present disclosure provides a composite metal salt having a hexagonal Cd(OH)2 type crystal structure and an X-ray diffraction intensity ratio (orientation H) of the (101) plane to the (001) plane of 60% or less, and being denoted by the following formula (1):wherein “M2+” denotes at least one divalent metal other than Mg; “A” denotes at least one organic ligand; “x” denotes a number in a range of 0≤x<0.2; “y” denotes a number in a range of 0<y<0.05; and “n” denotes an integer of from 1 to 4, or zero.

The application discloses undoped and ion-doped all-inorganic non-lead double-center metal halide materials and preparation and application thereof. The all-inorganic non-lead double-center metal halide materials are synthesized by a solution method in one step, stirring and mixing, and temperature reduction and crystallization, and finally colorless flaky transparent crystals are obtained, and the structural composition of the crystals is A5BB'X8:M, wherein A is an alkali metal ion, B is a divalent metal cation, B' is a monovalent metal cation, X is a halogen ion, A and B' cannot be the same, and M is a doping ion. The preparation method is simple, the metal halide crystal material obtained is environment-friendly, non-toxic, stable, and has high-efficiency visible light wide-spectrum luminescence performance, and has great development potential in the fields of illumination, display, photoelectric detection, solar cells, lasers, sensors, photoelectric catalysis and the like. The application solves the toxicity problem of lead-based perovskite, improves the stability of the new all-inorganic non-lead double-center metal halide through doping, and simultaneously improves the fluorescence performance, and has good application prospect in various fields.

The invention provides a fragile capsule. A shell of the capsule contains a gel, a flexibilizer, an adhesive, an emulsifier and a pigment. During preparation, capsule shell liquid and core liquid are co-extruded into a condensation bath through capsule dripping equipment, wet capsules are collected from the condensation bath, then the wet capsules and oily adsorption substances are arranged in rotating cage equipment to be finished, the oily adsorption substances are oil absorption paper, cotton towels, plant fiber towels or artificial fiber fabrics, and then drying is conducted. A solution containing calcium or magnesium ions does not need to be used as a capsule shell reinforcing cross-linking agent, so that a divalent metal complexing agent capable of reacting with the calcium and magnesium ions does not need to be used in the capsule shell, and good physical properties can be obtained. On the other hand, the wet capsule is finished by adopting an oily adsorption substance and then is dried, so that the performance of the capsule is further improved. The invention provides a new way for preparing the fragile capsule.

The invention provides a high-entropy FAPbBr3 perovskite material, and the perovskite material comprises a perovskite nanocrystal which takes FAPbBr3 as a main crystalline phase, and the B site of the perovskite nanocrystal is occupied by at least five divalent metal elements in a covalent manner; the organic ligand is distributed on the surface of the perovskite nanocrystal, and the organic ligand at least comprises a phosphonic acid compound and / or a phosphinic acid compound; a polymethyl methacrylate organic phase in coexistence with the perovskite nanocrystal; the silicon dioxide phase and the perovskite nanocrystals coexist and exist in a dispersed mode; wherein the perovskite nanocrystal, the organic ligand, the polymethyl methacrylate organic phase and the silicon dioxide phase jointly form the composite powder. The invention aims to realize the particle size regulation and recrystallization of the perovskite material, and reduce the adverse effect of the mechanical post-treatment process on the coexistence state of the multi-component B-site metal ions, thereby giving consideration to the structural stability and performance stability of the material.

The application of layered double hydroxide fluoride removal agent and its preparation method and application belong to the technical field of fluorine-containing wastewater treatment, and aim at the shortcomings and deficiencies of the existing single aluminum fluoride removal agent, and provide a kind of layered double hydroxide fluoride removal agent and its preparation method and application, which is based on the special aluminum polymer as the base, combined with divalent metal cations to form layered double hydroxide, which can greatly improve the positive charge density, the number of surface groups and the activity of the fluoride removal agent, and is more conducive to approaching and adsorbing pollutants.

One aspect of the present disclosure provides an ion-conducting substance which contains an alkali metal element, a divalent metal element D, a trivalent or higher metal element M, and a halogen element, has a cubic crystal structure, and has an X-ray diffraction pattern obtained by measurement using a CuK [alpha] ray at 25 DEG C, the ratio of the peak height of diffraction peak A to the peak height of diffraction peak B is 0.80-2.50, where diffraction peak B is the diffraction peak having the maximum peak height observed in the 2 [theta] angle range of 45-53 DEG, and diffraction peak A is the diffraction peak having the maximum peak height observed in the 2 [theta] angle range of 33-38 DEG.

The invention relates to the technical field of radioactive interventional therapy, and discloses a surface modification method of yttrium 90 glass microspheres and application of the yttrium 90 glass microspheres in tumor treatment, and the surface modification method comprises the following steps: dispersing the yttrium 90 glass microspheres in a phytic acid solution containing carbonate buffer pairs, inducing in-situ etching by using an alkaline environment, and generating a phytic acid metal conversion layer; then reacting in a divalent metal chloride solution to adsorb and activate metal ions; and finally, completing assembly in a sodium hyaluronate solution through coordination, and freeze-drying to obtain the surface modified microspheres. A composite coating with blocking and targeting functions is constructed on the surface of the microsphere through an in-situ etching and coordination assembly process, the obtained microsphere is used for preparing a radioactive interventional medicine for treating liver cancer, the focus deposition efficiency can be improved by utilizing specific binding of hyaluronic acid and a CD44 receptor, and nuclide dissolution is inhibited by utilizing the coating to seal surface defects, so that the radioactive interventional medicine can be used for treating liver cancer. And the safety and effectiveness of treatment are improved.

The invention discloses a light absorbing material, an optical film and electronic equipment. The light-absorbing material has a structure as shown in a general formula (1): (1), wherein R is selected from substituted or unsubstituted aryl with the carbon atom number of 6 to 30; m is selected from divalent metal atoms; according to the invention, heteroatoms are introduced into a porphyrin framework to break the planar configuration of the porphyrin framework, so that the interaction between molecules is weakened, the solubility and dispersity of the light-absorbing material are improved, and the processability and the material stability of the light-absorbing material can be further improved.

The present invention addresses the problem of providing: a method for producing a device using a new principle; a device; and a method for measuring ion current using a device.　This problem can be solved by a device comprising: a substrate having a first face and a second face; a first through hole that passes through the substrate from the first face towards the second face; and a deposit of a metal compound which is at least one type selected from the group consisting of a divalent metal hydroxide, a trivalent metal hydroxide, a divalent metal phosphate and a trivalent metal phosphate and which is formed on a wall surface of the first through hole.

The invention relates to the technical field of biological medicine, and discloses a short-chain fatty acid-containing menstrual blood stem cell exosome ackermania composition and application thereof, the composition is of a microsphere structure, and comprises a biological assembly composed of menstrual blood stem cell exosome and ackermania, and a microsphere skeleton containing low-methoxy pectin and trehalose. Wherein the exosome is adsorbed on the surface of metabolism-induced Ackerman's bacteria through a divalent metal cation mediated ion bridging effect. Metabolic induction is utilized to regulate and control the surface properties of bacteria, and an ion bridging technology is combined, so that the loading efficiency and the binding stability of the exosome are remarkably improved; a pectin-calcium gel network and trehalose are used for providing dual protection, so that the biological activity is maintained; and calcium butyrate is utilized to realize dual functions of structure construction and drug effect release. The composition can be used for preparing medicines for preventing or treating intestinal inflammation related diseases.

The present invention is directed to both stoichiometric and sub-stoichiometric high entropy aluminate spinels as a novel high entropy oxide (HEO) crystal phase. Previously reported HEOs are overwhelmingly stoichiometric structures containing a single cationic site and are stabilized solely by intermixing increasing numbers of cations. According to an aspect of the invention, sub-stoichiometric spinels, containing various mixtures of divalent metal cations and cationic vacancies in nominally equimolar concentration, provide entropic stabilization similarly to cations in stoichiometric spinels. The chromatic, structural, and chemical properties of these complex spinels are highly tunable via incorporation of cationic vacancies and multiple divalent metals, enabling their application as unique pigments, catalysts, and thermal coatings.

The present application relates to the field of textile materials, and more particularly to a sunscreen polyester and a preparation method thereof, which comprises the following steps: S1: preparing an iron monatomic / hydrotalcite sunscreen filler by hydrothermal reaction under alkaline conditions, using an iron source, a divalent metal salt and a trivalent metal salt as raw materials; S2: grinding the iron monatomic / hydrotalcite sunscreen filler to obtain a filler powder; and S3: mixing the filler powder with a PET master batch, melting, and preparing the sunscreen polyester by solution mixing spinning. The preparation method of the sunscreen polyester provided by the present application introduces the self-prepared iron monatomic / hydrotalcite sunscreen filler, improves the ultraviolet resistance of the polyester, endows the polyester with long-acting and wash-resistant sunscreen effect, and improves the durability of the ultraviolet resistance.

The application discloses an ultramicroporous metal organic framework material, a preparation method thereof and a xenon / krypton separation application. 12 H 12 ] 2‑ The six-coordinated divalent metal cation M is coordinated with the four-tooth nitrogen-containing ligand L in the horizontal direction to form an infinitely extended two-dimensional network structure, is coordinated with two water molecules in the vertical direction to form a two-dimensional secondary structure unit, and finally is coordinated with the divalent inorganic anion [B 12 H 12 ](H2O)2, wherein L is a four-tooth nitrogen-containing ligand 1,1,2,2-tetrakis (pyridine-4-yl) ethylene, the metal cation M is one or more than two of Cu 2+ , Ni 2+ , Fe 2+ , Co 2+ , Zn 2+ .

This invention provides an in-situ passivation method for perovskite thin films, a perovskite solar cell, and a method for preparing the same. The in-situ passivation method includes: preparing a perovskite precursor solution comprising formamidinium cations, divalent metal cations, halide anions, and fluorobenzylamine, wherein the content of fluorobenzylamine is 0.01% to 1% of the molar amount of formamidinium cations; coating the perovskite precursor solution and annealing it to crystallize the solution and allow the fluorobenzylamine and formamidinium cations to react in situ, forming an in-situ passivated perovskite thin film. In this application, fluorobenzylamine is used to in-situ passivate the formamidinium-containing perovskite system, achieving mutual promotion between the passivation and crystallization adjustment processes. Furthermore, in-situ passivation suppresses ion migration, allowing the high-quality thin film structure composed of large grains to be maintained during long-term operation, ultimately achieving high device stability.

A light-emitting element includes a first semiconductor layer doped to have a first polarity, a second semiconductor layer doped to have a second polarity different from the first polarity, a light-emitting layer disposed between the first and second semiconductor layers, a shell layer formed on side surfaces of the first semiconductor layer, the light-emitting layer, and the second semiconductor layer, the shell layer including a divalent metal element, and an insulating film covering an outer surface of the shell layer and surrounding the side surface of the light-emitting layer.