46 results about "Alkali ions" patented technology

The invention belongs to the field of fluorine-containing materials, and relates to a chlor-alkali ion membrane electrolysis test method. The invention aims to provide a test method suitable for scientific research and teaching environments, and accurate control of the chlor-alkali electrolysis process is realized. The method comprises the test steps of pretreatment of the chlor-alkali ionic membrane, assembly of the chlor-alkali ionic membrane, liquid filling of a cathode system and an anode system, heating and electrolysis evaluation. The method has the characteristics of convenience in operation, low energy consumption, high adaptability and the like, and is particularly suitable for research of a chlor-alkali electrolysis process, performance evaluation of a novel membrane material and exploration of an electrochemical reaction mechanism.

This invention relates to nickel catalysts with alkali ions for homopolymerization and copolymerization. This invention also relates to methods of preparing copolymers and to methods of degrading copolymers.

This invention relates to nickel catalysts with alkali ions for homopolymerization and copolymerization.

The application discloses an alkali ion type covalent organic framework material and a preparation method and application thereof, wherein 2,4,6-tris(4-formylphenyl)-1,3,5-triazine, 1,4-diisocyanobenzene and 2-aminopyridine are used as building units, a covalent organic framework containing pyrimidine is obtained through a condensation reaction, and then a quaternary ammonium reaction and an ion exchange reaction are sequentially performed to obtain the alkali ion type covalent organic framework.The alkali ion type covalent organic framework material prepared by the application has rich alkali sites, developed pore structures and good chemical stability, exhibits good catalytic performance as a catalyst for one-pot preparation of dimethyl carbonate from CO2, an epoxide compound and methanol, and also shows good cycle stability.

The present invention concerns the recovery of methionylmethionine from aqueous alkali ions containing media by intermediate formation of Bis(methionyl)-diketopiperazine.

To provide a positive electrode active material which can stably maintain an original layered structure without excessively compromising the symmetry of an electronic structure even after a charge and a discharge are repeated, to satisfy the required performance of a secondary battery, the capacity of the positive electrode active material being larger than the effective capacity of lithium cobalt oxide.SOLUTION: A positive electrode active material for an alkaline ion secondary battery is made of ByMO2 when the material is manufactured or is fully charged and is specifically made of an oxide crystal of an alkaline metal B, a transition metal M, and an oxygen atom O as the basic constituent elements of a layered structure (1: movable ions A, 2: an alkaline metal B existing between layers, 3: an octahedron as an oxygen 6-orientation made of the transition metal M and the oxygen O), and the Shannon ions radius is so set that movable ions A is smaller than movable ions B. The existence of B between layers suppresses change in the distance between layers if A is inserted between the layers or is separated from between layers (charge and discharge). The relation A>B in the ion diffusion coefficients makes the layered structure harder to break, and increase of the capacity at a high-rate charge / discharge can be thus attained.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of high polymer materials, and particularly relates to a chlor-alkali ion exchange membrane suitable for an acidic electrolysis environment and a preparation method and application thereof. According to the chlor-alkali ion exchange membrane suitable for the acidic electrolysis environment, firstly, a double-layer membrane matrix of perfluorinated sulfonic acid resin A and perfluorinated sulfonic acid resin B is thermally compounded with a reinforced matrix material to obtain a reinforced composite membrane, and finally, the reinforced composite membrane is subjected to hydrolysis, balancing and hydrogen type transformation treatment to obtain the chlor-alkali ion exchange membrane suitable for the acidic electrolysis environment. The chlor-alkali ion exchange membrane suitable for the acidic electrolysis environment is obtained. The perfluorinated sulfonic acid resin A and the perfluorinated sulfonic acid resin B have different ion exchange capacities, and the mass ratio of the perfluorinated sulfonic acid resin A to the perfluorinated sulfonic acid resin B is (1: 2)-(2: 1). The chlor-alkali ion exchange membrane suitable for the acidic electrolysis environment provided by the invention has good selectivity on chloride ions, can effectively block reverse osmosis of Cl ions, isolates mutual osmosis of hydrogen and oxygen, and stably and efficiently electrolyzes a byproduct hydrochloric acid. The invention also provides a preparation method thereof.

The invention relates to chemically strengthened glass and an electronic device case. The purpose of the present invention is to provide a chemically strengthened glass having both excellent radio wave transmissivity in a high-frequency band and high strength. The present invention relates to a chemically strengthened glass having a thickness of t (in [mu] m) and a relative dielectric constant of 7.0 or less at 20 DEG C and a frequency of 10 GHz (Z = (S2-S1) * 10 + X / 1000), where Z, as determined by the following equation, is 0.65 or more. In the formula, S1 is an entropy function calculated from the amount of alkali ions in the center of the glass, S2 is an entropy function calculated from the average amount of alkali ions in a region from the surface of the glass to a depth of 0.05 t, and X is the average value (unit: MPa) of compressive stress in a region from the surface of the glass to a depth of 0.05 t.

The present invention relates to a method for producing a thick electrode film having a layer thickness of 100 μm or more and 600 μm or less for a secondary alkali ion energy storage device, the method comprising the steps of: a) preparing a dispersion comprising at least one solvent and solids, the dispersion having a total solids content of 40 wt. % or more and 80 wt. % or less, the solids comprising an active material, one or more conductive additives, and one or more binders, and mixing butanediol into the dispersion at a concentration of 2 wt. % or more and 10 wt. % or less, based on the total weight of the dispersion; b) coating the dispersion in a layer thickness of 200 μm or more and 1200 μm or less; and c) drying the coated dispersion to obtain an electrode film. The present invention also relates to the use of the method according to the present invention for producing an electrode film, and to an electrode film having a layer thickness of 100 μm or more and 600 μm or less, and having a specific composition.

The invention belongs to the technical field of polymer functional membranes, and particularly relates to a homogeneous ion exchange membrane prepared from reclaimed materials and a preparation method of the homogeneous ion exchange membrane. The preparation method of the homogeneous ion exchange membrane prepared from the reclaimed materials comprises the following steps: treating the reclaimed materials, then carrying out melt extrusion granulation, measuring the related performance of the reclaimed materials, supplementing resin powder, and then carrying out melt extrusion; and then, carrying out melt casting to prepare a homogeneous mixed acid-based membrane, embedding the reinforced matrix material into the homogeneous mixed acid-based membrane, and finally, soaking to obtain the homogeneous ion exchange membrane. According to the homogeneous ion exchange membrane prepared from the reclaimed materials, the rim charge in the preparation process of a chlor-alkali ion exchange membrane composite membrane is used as a raw material, and the prepared homogeneous ion exchange membrane has good impurity tolerance and impurity blocking capacity, can operate in a complex environment, has good mechanical strength, and can be used for preparing the homogeneous ion exchange membrane. The raw material cost is low; the invention further provides a preparation method, and the preparation process is simple.

The present invention discloses a method for continuous treatment of TDI waste brine, which belongs to the technical field of wastewater treatment. The method of the present invention comprises the following steps: adjusting the pH value of the TDI waste brine to acidic, then subjecting the acidic waste brine to a peroxidation adsorption column and simultaneously subjecting it to ultraviolet irradiation to perform photocatalytic oxidation and adsorption reaction; after the reaction is completed, adjusting the pH value of the acidic waste brine to alkaline, then passing the alkaline waste brine through a stripping tower to remove small molecule organic matter, and obtaining waste brine after continuous treatment. The continuous treatment method of the present invention can completely remove organic matter from the TDI waste brine, and the treated waste brine has a TOC of less than 10 ppm and a TN of less than 3 ppm, and can be used as a raw material for the chlor-alkali ion membrane preparation process of caustic soda, so that the sodium chloride and water in the waste brine are recycled, achieving zero discharge of the waste brine and solving the problem of environmental pollution. In addition, the treatment method of the present invention is simple, easy to operate, and cost-effective.

The present invention provides a method for producing a positive electrode active material for alkali ion secondary batteries, the positive electrode active material containing a large amount of a transition metal, while enabling a battery to operate.　A method for producing a positive electrode active material for alkali ion secondary batteries, the positive electrode active material containing 34% by mole or more of CrO + FeO + MnO + CoO + NiO. This method for producing a positive electrode active material for alkali ion secondary batteries is characterized by comprising: a step for preparing a positive electrode active material precursor that contains crystals; and a step wherein at least some of the crystals are melted and amorphized by irradiating the positive electrode active material precursor with light.

The application discloses an alkali ion passivated non-lead perovskite light-emitting diode and a preparation method thereof, and belongs to the technical field of light-emitting diodes.The light-emitting diode comprises, from bottom to top, ITO conductive glass, a hole injection layer, a hole transport layer, a non-lead perovskite light-emitting layer, an electron transport layer, an electrode modification layer and a metal electrode.The application further provides a preparation method of the non-lead perovskite light-emitting diode.The non-lead perovskite light-emitting layer is prepared by an anti-solvent crystallization method from an alkali ion passivated non-lead perovskite precursor solution and an anti-solvent, and the alkali ion is introduced to inhibit non-radiative recombination loss in a surface and a grain boundary of the non-lead perovskite thin film, so that the light-emitting efficiency is enhanced, and the photoelectric performance of the non-lead perovskite light-emitting diode device is improved.

This invention discloses a method for preparing long-term stable ultra-high purity silica sol. The method involves preparing silica sol using an alkoxide method, followed by forced cyclic desolvation. By adding conjugate acid-base ionic dispersants, the pH and thermal stability of the silica sol are maintained. The prepared silica sol is then modified and subjected to high-pressure aging to ultimately obtain an ultra-high purity silica sol with a mass fraction of over 20%, a primary particle size between 30-150 nm, a secondary particle size between 50-350 nm, and an association degree between 1.7-2.3. The silica sol has a metal ion content of less than 1 ppm, a loss of less than 5% during preparation, and exhibits excellent polishing performance.

Systems and methods for synthesizing solid state polymer electrolytes and / or using solid state polymer electrolytes in the production of all-solid-state alkali-ion batteries are provided.

The present invention relates to reduced graphene oxide (rGO)-based aerogel and methods of preparing such aerogels The invention also relates to electrode materials and electrodes comprising such aerogels and alkali-ion batteries comprising such electrodes.

The utility model discloses a terahertz-enhanced hydro-energetic water generation apparatus comprising a water inlet, a pre-filtration unit, a hydrogen infusion chamber, an alkaline ionization module, and a terahertz resonance chamber arranged in a sequential flow path. The pre-filtration unit removes impurities from raw water. The hydrogen infusion chamber generates hydrogen gas by electrolysis or a magnesium-based reaction and dissolves the hydrogen into the water by a micro-bubble diffusion mechanism to produce hydrogen-rich water. The alkaline ionization module electrolyzes the water to produce alkaline water. The terahertz resonance chamber applies a terahertz-frequency electromagnetic field to condition the water before discharge. The apparatus integrates multiple water treatment functions into a single system to produce hydrogen-rich, alkaline, 15 terahertzconditioned functional water.

The present invention discloses a method for improving the mechanical and biological activity of lithium disilicate glass ceramics by composite ion exchange, which comprises: first, removing crystallization water from Ca(NO3)2·4H2O to obtain Ca(NO3)2; second, placing KNO3 in Ca(NO3)2 and heating and keeping the mixture warm until it is completely melted to obtain a KNO3-Ca(NO3)2 mixed bath salt; third, maintaining the KNO3-Ca(NO3)2 mixed bath salt at a constant temperature, and placing the mixture into lithium disilicate glass ceramics for ion exchange treatment; fourth, taking it out, cooling it to room temperature, and washing the residual molten salt on the surface. The present invention uses Li + / Ca 2+ 、Li + / K + Composite ion exchange regulates the stress state and ion distribution of the surface of lithium disilicate glass ceramics, and constructs a residual compressive stress layer and a gradient Ca-rich layer on its surface. 2+ , K + The bioactive alkali ion layer improves the mechanical properties and bioactivity of lithium disilicate glass ceramics and is suitable for medical implants.

This invention provides an anti-efflorescence alkaline primer emulsion for exterior walls, its preparation method, and its application. The raw materials of this primer emulsion, by weight, include: 0.7-1.6 parts emulsifier, 15-27 parts styrene, 10-25 parts acrylate monomers, 0.5-1.8 parts unsaturated carboxylic acids, 0.3-0.8 parts acrylamide monomers, 0.2-0.6 parts silane coupling agent, 0.3-0.5 parts persulfate initiator, 0.05-0.15 parts post-treatment agent, 0.05-0.16 parts environmentally friendly bactericide, 0.5-1.6 parts pH adjuster, 0.03-0.11 parts defoamer, and 41-54 parts water. This invention introduces a silicon-containing or rigid skeleton structure to form a dense cross-linked network, blocking the penetration of salt and alkali ions. This gives the emulsion excellent resistance to salt and alkali, water resistance, and adhesion. It can effectively prevent efflorescence, discoloration, chalking, and peeling of the wall surface, and extend the service life of the topcoat. It is especially suitable for exterior wall coating in high saline and alkaline environments such as coastal areas.

The present application relates to the technical field of high polymer coating, and discloses an anti-adhesion steel formwork coating and a preparation method thereof, the coating is prepared by mixing and curing an A agent and a B agent; the A agent contains, in terms of weight parts, 100 parts of bisphenol A type liquid epoxy resin, 10-15 parts of long-chain aliphatic mono-epoxy active diluent, 5-8 parts of mixed solvent, 0.8-2.0 parts of zinc acetylacetone and 0.05-0.15 parts of copper acetylacetone; and the B agent is 45-64 parts of siloxane modified phenolic amine prepolymer. By covalently anchoring the siloxane chain segment in the crosslinked network, the loss of the anti-adhesion substance is avoided; the coordination steric hindrance effect of zinc ions is used to inhibit the initial reaction heat release, thereby prolonging the pot life; the long-chain aliphatic diluent constructs a hydrophobic shielding layer to block the penetration of strong alkali ions, thereby improving the saponification life; and the dynamic color change mechanism of the copper acetylacetone provides an intuitive indication for material mixing and dry state.

The utility model provides mildew-proof coated glass, which belongs to the field of coated glass, and comprises a glass substrate, a coating layer and a coating layer, a mildew-proof structure; the mould-proof structure comprises a mould-proof layer plated on one side of the air surface of the glass substrate, the mould-proof layer is a silicon nitride dielectric film layer, the thickness of the silicon nitride dielectric film layer is 10-12nm, the silicon nitride dielectric film layer covers the glass substrate in a vacuum magnetron sputtering physical coating mode, and the glass substrate is sodium-calcium-silicon float white glass with the thickness of 6mm. According to the utility model, a vacuum magnetron sputtering physical coating method is adopted, and the coated silicon nitride film layer is compact in structure and can cover holes in the surface of the glass, so that water molecules in the air are isolated from sodium, calcium and alkali ions on the surface of the glass, and the glass is effectively prevented from mildewing.

The invention belongs to the technical field of agriculture, particularly relates to a preparation method of an acid soil conditioner, and provides the preparation method of the acid soil conditioner which comprises the following components in parts by mass: 50-70 parts of modified expanded vermiculite, 14-20 parts of sepiolite, 10-20 parts of plant ash, 20-40 parts of humic acid, 10-20 parts of xanthan gum, 20-30 parts of sodium alginate and 10-15 parts of quick lime. The problem that a traditional acid soil conditioner is poor in effect is solved, the synergistic effect of the sodium alginate and the quick lime is used in cooperation with the alkaline structure of the plant ash, acid soil is rapidly modified, the colloidization and complexation effects of the sodium alginate and the xanthan gum are used, the effect of immobilizing metal elements is achieved, and the effect of improving the soil quality is achieved. The leaching of base ions in the soil and the loss of beneficial elements are reduced.

To provide chemically strengthened glass having both excellent radio wave transmissivity in the high-frequency band and high strength.SOLUTION: There is provided chemically strengthened glass having a thickness of t (unit: μm) and a specific inductive capacity of 7.0 or less at 20°C and a frequency of 10 GHz, wherein Z obtained from the expression, [Z=(S2-S1)×10+X / 1000] is 0.65 or more, using the entropy function S1 calculated from the average alkali ion amount in the central part of the glass, the entropy function S2 calculated from the average alkali ion amount up to a depth of 0.05 t from the glass surface and the average compressive stress X [unit: MPa] in the region to a depth of 0.05 t from the glass surface.SELECTED DRAWING: None

This invention relates to a method for preparing modified fly ash, its products, and their applications. The preparation method includes: sequentially subjecting fly ash to a first grading and screening, magnetic separation, a second grading and screening, and ultrasonic modification to obtain the modified fly ash. The modified fly ash of this invention has a low heavy metal content, reducing pollution. This invention also provides a soil conditioner, which includes the modified fly ash. The mixing of modified fly ash with a saline-alkali soil mortar layer can completely disrupt the dense structure of the mortar layer, increase the soil's permeability and aeration, improve the downward migration channels of saline-alkali ions, and thus accelerate the removal of saline-alkali ions. This method utilizes a large amount of solid waste and achieves the improvement of saline-alkali soil, possessing significant economic and social value.

An ambient heat energy converter includes a first positive evaporating electrode which functions as the cathode, a membrane separator, a porous barrier membrane, and a second, negative condensing electrode which functions as the anode. Electrodes and are porous and facilitate hydrogen-oxygen reactions that electrolyze and reduce water respectively. Porous barrier membrane allows water and protons to pass through but prevents hygroscopic acid or base ions in condensing electrode from passing through, only water and protons can pass. During operation, membrane separator's high affinity for liquid water maintains a tension that pulls liquid water through porous barrier membrane from condensing electrode. Barrier membrane does not allow ions other than water that comprise the hygroscopic material in condensing electrode to pass through. Conversely, the hygroscopic nature of condensing electrode maintains water tension in the opposite direction. A housing surrounds the electrodes and creates a free flowing path.

The invention discloses a high-temperature-resistant and high-concentration alkali-resistant ion solvated microporous membrane and a preparation method and application thereof, and relates to the technical field of separation membranes. Uniformly distributed microporous structures are introduced into a polymer membrane through a controllable super-crosslinking reaction, so that an ion transmission channel is effectively expanded, and the ion flux of the membrane is remarkably improved; meanwhile, stable oxindole / OH <-> complex ion pairs are constructed in situ, and a continuous ion solvation micropore channel is formed; the channel not only provides abundant transmission sites for OH, but also constructs a selective transmission path penetrating through the membrane thickness direction, so that excellent ion selectivity and chemical stability can still be maintained under the conditions of high-concentration alkali liquor and high temperature.

The invention provides a preparation method and application of magnesium vegetation concrete, and belongs to the field of ecological slope protection. The preparation method comprises the following steps: S1, weighing the aggregate, the light calcined magnesia, the magnesium chloride hexahydrate, the active admixture, the water-resistant agent, the alkali ion blocking agent, the nutrition adaptation agent and the water according to a certain mass part ratio; s2, magnesium chloride hexahydrate is dissolved in water to prepare a MgCl2 solution with the mass fraction of 20 wt%-25 wt%, and standing is conducted for 24 h; s3, mixing light calcined magnesia with the MgCl2 solution obtained in the S2, stirring for 5 minutes, sequentially adding an active admixture, an alkali ion blocking agent, a water-resistant agent and a nutrition adaptation agent, and continuously stirring until gel slurry is formed; s4, aggregate is added into the gelled slurry obtained in the S3, stirring continues till the surface of the aggregate is covered with the uniform gelled slurry, and slurry to be formed is obtained; and S5, filling the slurry obtained in the step S4 into a mold, vibrating, compacting and molding to obtain the magnesium vegetation concrete. The magnesium vegetation concrete prepared by the invention has the advantages of low alkali, high water resistance, high strength and better vegetation property.

The invention discloses a hydrogen-electricity-heat-steam multi-energy co-production system for chlor-alkali chemical production. The hydrogen-electricity-heat-steam multi-energy co-production system comprises a photovoltaic hydrogen production unit, a chlor-alkali chemical production unit, a power generation waste heat recovery unit, a steam generation unit and an electric power regulation and control unit. Photovoltaic green hydrogen and chlor-alkali byproduct hydrogen are used for cooperatively driving the fuel cell to generate power, and power balance is adjusted; a double-loop heat recovery network is constructed, and low-grade waste heat of a fuel cell, a hydrogen production electrolytic cell, a PVT plate and a chlor-alkali ion membrane electrolytic cell is collected in a unified mode; the waste heat is upgraded into 120-130 DEG C industrial steam by using a direct pressurization boiling type high-temperature heat pump, and the industrial steam is supplied to a chlor-alkali production process to realize gradient utilization of energy and closed-loop circulation of substances.

The invention relates to a water purifying agent as well as a preparation method and application thereof. The water quality purifying agent sequentially comprises a core layer, a functional composite layer coated outside the core layer, and a hydrophobic coating layer coated outside the functional composite layer, the core layer comprises a modified mineral carrier, nano zero-valent iron loaded on the surface of the modified mineral carrier, and chitosan quaternary ammonium salt coated outside the carrier; the functional composite layer comprises a zeolite molecular sieve and a temperature-sensitive polymer; and the hydrophobic coating layer is a siloxane-based coating layer. The weight part ratio of the core layer to the functional composite layer to the hydrophobic coating layer is 100: (15-25): (1-3). Through multi-layer collaborative design of the core layer, the functional composite layer and the hydrophobic coating layer, synchronous and efficient removal of heavy metals, suspended solids and saline-alkali ions in the subsidence water area of the mining area is realized. The preparation process is simple and controllable, the raw materials are environment-friendly, and the method is particularly suitable for large-scale treatment of the mining subsidence area ponding water area and has remarkable economic benefits and environmental benefits.

The present invention relates to a chemically strengthened glass having a thickness of t (unit: μm) and a relative permittivity of 7.0 or less at 20° C. and a frequency of 10 GHz, in which a value of Z determined by the following formula is 0.65 or more, where S1 is an entropy function calculated from an amount of alkali ions in a center portion of the glass, S2 is an entropy function calculated from an average amount of alkali ions from a glass surface to a depth of 0.05t, and X (unit: MPa) is an average value of a compressive stress in a region from the glass surface to the depth of 0.05t: Z=(S2−S1)×10+X / 1000.