18 results about "PERMANGANATE ION" patented technology

To provide a method for recovering metallic zinc from solid metallurgical waste containing zinc and manganese.SOLUTION: A. contacting the solid metallurgical waste with an aqueous leaching solution comprising chloride ions and ammonium ions to produce one or more leachates comprising zinc ions and manganese ions and one or more insoluble solid residues; b. cementing the leachate by adding metallic zinc as a precipitating agent to remove one or more metals other than zinc and manganese present in ionic form in the leachate; B. producing a purified leachate; and c. subjecting the purified leachate to electrolysis in an electrolytic cell comprising one or more cathodes and one or more anodes to deposit metallic zinc on the cathodes and produce one or more effluent leachates. The method comprises, prior to the electrolysis, the step of precipitating manganese ions by oxidation with permanganate ions and subsequently separating the sediment containing MnO2.SELECTED DRAWING: Figure 1

The present invention belongs to the field of formaldehyde removal materials, and specifically relates to a melt-blown film-manganese oxide composite formaldehyde removal material and its preparation and application. The preparation steps are as follows: placing the melt-blown film in a divalent manganese salt solution for ultrasonic-assisted treatment, wherein the Mn in the divalent manganese salt solution is 2+ The meltblown film is subjected to ultrasonic treatment and subjected to a surface reaction in a permanganate source solution, whereby manganese dioxide is in situ deposited on the meltblown film to produce the meltblown film-manganese oxide composite formaldehyde removal material. The permanganate source solution contains permanganate ions at a concentration of 0.35 to 0.45 M, and the molar ratio of Mn in the meltblown film after ultrasonic treatment to Mn in the permanganate source solution is 1:2.5 to 15. The material of the present invention can achieve excellent formaldehyde removal efficiency and effectiveness even at low formaldehyde levels.

A non-thermal method for regenerating an alkali metal permanganate impregnated molecular filter comprising: washing a spent molecular filter comprising oxidized products selected from manganate (MnO₄²⁻), manganese dioxide (MnO₂), and sulfate and nitrate salts using distilled water; contacting said washed and wet molecular filter with a solution comprising: (i) an alkali metal hydroxide, and (ii) an alkali metal persulfate, to promote in-situ oxidation of Mn(IV) or Mn(VI) species to Mn(VII), thereby obtaining a treated molecular filter; and drying the treated molecular filter to yield a regenerated molecular filter characterized by the reformation of permanganate ions.

An abrasive slurry of the present invention includes manganese oxide abrasive grains containing manganese oxide particles, permanganate ions, phosphates, and a polymeric additive containing one or more water-soluble organic polymers selected from the group consisting of a polycarboxylic acid, a polycarboxylate, a salt of naphthalene sulfonic acid formalin condensate, polyvinyl alcohol, polyethylene glycose, polyvinylpyrrolidone, and copolymers thereof. Furthermore, in a polishing method of the abrasive slurry of the present invention, an object to be polished is polished using the abrasive slurry of the present invention.

The invention discloses a sulfonic acid functionalized COF material and a preparation method and application thereof, and relates to the technical field of environmental functional materials and wastewater treatment.The preparation method comprises the steps that an aldehyde monomer 2, 4, 6-triformyl phloroglucinol and an amine monomer 2, 5-diaminobenzene sulfonic acid are dissolved in trichloromethane and ultrapure water respectively according to the molar ratio of 1: 1.2-1.5 and mixed; the invention discloses a sulfonic acid functionalized TpPa-SO3H-1 material which is characterized in that TpPa-SO3H-1 is taken as a raw material, glacial acetic acid is taken as a catalyst to prepare a precursor solution, the precursor solution is subjected to spray atomization and pyrolysis polymerization through an atomization device, and the sulfonic acid functionalized TpPa-SO3H-1 material can be obtained and is simple in preparation method, high in permanganate radical removal efficiency, high in selectivity, excellent in cycle performance and mild in use process. The application range is wide, and the popularization performance is excellent.

A method for recovering metal zinc from a solid metallurgical waste containing zinc and manganese, may include: (a) bringing the solid metallurgical waste into contact with an aqueous leaching solution comprising chloride ions and ammonium ions to produce at least one leachate including zinc ions and manganese ions and at least one insoluble solid residue; (b) cementing the leachate, by adding metal zinc as a precipitating agent, to eliminate at least one metal other than zinc and manganese possibly present in the leachate as ions and producing a purified leachate; (c) subjecting the purified leachate to electrolysis in an electrolytic cell including at least one cathode and at least one anode immersed in the purified leachate to deposit metal zinc on the cathode and producing at least one exhausted leachate, and, before the electrolysis, precipitating manganese ions by oxidation with permanganate ions and subsequently separating a precipitate including MnO2.

Chemical balancing reactor (40) for an electrochemical energy storage system (21), the balancing reactor (40) comprising: - a first compartment (41) for circulating an electrolyte solution (24) containing permanganate ions, - a second compartment (42) for circulating a gaseous mixture containing at least dihydrogen, - a separator (43) extending between the first compartment (41) and the second compartment (42), the separator comprising a porous membrane, suitable for allowing contact between the gaseous mixture and the electrolyte solution (24), and for preventing the passage of the electrolyte solution (24) from the first compartment (41) into the second compartment (42). Figure to be published with the abbreviation: 2

This invention relates to the preparation and application of carbon dot-functionalized lanthanide metal-organic framework materials for the detection of permanganate ions in water: S1, selecting raw materials: europium nitrate, trimesic acid, and grapefruit peel; S2, dissolving trimesic acid in anhydrous ethanol and stirring; S3, adding europium nitrate solution to the solution obtained in S2 and stirring; S4, allowing to stand, centrifuging to collect the white precipitate, washing and drying to obtain a white lanthanide metal-organic framework material; S5, drying and crushing grapefruit peel, adding deionized water, and transferring to a high-pressure reactor for reaction; S6, centrifuging the solution obtained in S5, taking the supernatant and filtering it through a microporous membrane; S7, dialysis purification of the solution obtained in S6 to obtain a pale yellow carbon dot solution; S8, mixing the carbon dot solution obtained in S7 with the lanthanide metal-organic framework material in S4 to obtain a carbon dot-functionalized lanthanide metal-organic framework material; S9, using the material obtained in S8 for the detection of permanganate ions in water.

The present invention relates to a system for polishing a hard mask, comprising a composition comprising permanganate ions of a permanganate oxidant; a substrate comprising a hard mask comprising at least one of a non-carbon boron component, a boron-carbon component, a non-carbon silicon component, a non-carbon chromium component, a non-carbon zirconium component, or any combination thereof; and a chemical mechanical planarization (CMP) device configured to contact the composition with the substrate so as to remove at least a portion of the hard mask of the substrate.

An abrasive slurry of the present invention includes manganese oxide abrasive grains containing manganese oxide particles, permanganate ions, and phosphates. Furthermore, in a polishing method of the abrasive slurry of the present invention, an object to be polished is polished using the abrasive slurry of the present invention.

The invention discloses a preparation method of manganese dioxide-nitrogen doped carbon quantum dot electrode slurry. Performing hydrothermal reaction on the carbon source substance and the nitrogen source substance; carrying out solid-liquid separation on the hydrothermal product, and removing a precipitation product to obtain a nitrogen-doped carbon quantum dot suspension; dropwise adding a KMnO4 aqueous solution into the NCQD suspension, enabling MnO4 <-> to fully react with functional groups on the surface of the NCQD, and generating a reduction product MnO2 on the surface of the NCQD to obtain a MnO2-coated NCQD suspension; and adding a KOH aqueous solution into the MnO2 (at) NCQD slurry to obtain the MnO2 (at) NCQD electrode slurry. The prepared MnO2-coated NCQD slurry can give full play to the electric double-layer capacitance characteristic of the NCQD and the pseudocapacitance characteristic of MnO2. The reversible redox reaction of the permanganate ion / manganate ion couple can provide additional pseudocapacitance contribution, so that the specific capacity of the electrode slurry is further improved.

A system for polishing a hardmask includes a composition including permanganate ions of a permanganate oxidizer; a substrate including a hardmask including at least one of a non-carbon-boron component, a boron-carbon component, a non-carbon-silicon component, a non-carbon-chromium component, a non-carbon-zirconium component, or any combination thereof; and a chemical mechanical planarization (CMP) apparatus configured to contact the composition with the substrate to remove at least a portion of the hardmask of the substrate.

To provide a chemical decontamination method and equipment for carbon steel and stainless steel components of nuclear power plants capable of reducing process time compared to conventional methods with high decontamination efficiency on both carbon steel and stainless steel in chemical decontamination of systems containing carbon steel and stainless steel in chemical decontamination of systems containing carbon steel and stainless steel.SOLUTION: The chemical decontamination method for carbon steel components of nuclear power plants includes: a decontamination process of purification system piping 67, RHR piping 82 of decontaminating a purification system piping 67 and an RHR piping 82 of the decontamination target area by supplying a formic acid, an ascorbic acid, and a corrosion inhibitor; after the decontamination process of the purification system piping 67 and the RHR piping 82, a formic acid decomposition step in which hydrogen peroxide is supplied and formic acid is decomposed using the oxidation-reduction potential as an indicator; and after the formic acid decomposition step, a residual organic matter decomposition step that decomposes residual organic matter by supplying compounds containing permanganate ions.SELECTED DRAWING: Figure 4

An object of the present invention is to provide a novel method for producing, without using an organic iron compound as a production raw material, water in which permanganate ions exist stably over a long period of time. As a means for resolution, the method comprises dissolving a divalent inorganic iron compound and a divalent manganese compound in water with a pH of less than 3.5, and then feeding ozone microbubbles into the water.

Electrochemical balancing reactor (40) for an electrochemical energy storage system (21), the balancing reactor (40) comprising: - a first compartment (41) for circulating a first electrolyte solution (24) containing permanganate ions, the first compartment (41) comprising a first electrode (43) configured to be in contact with the first electrolyte solution (24) in the first compartment (41), - a second compartment (42), configured to contain the first electrolyte solution (24) in a non-circulating manner, the second compartment (42) comprising a second electrode (44) configured to be in contact with the first electrolyte solution (24) in the second compartment (42), - a separator (46) extending between the first compartment (41) and the second compartment (42), the separator (46) comprising a microporous membrane,- means (45) for applying an electrical voltage between the first electrode (43) and the second electrode (44). Figure to be published with the abbreviation: 2,

The invention relates to a method for the anti-corrosion treatment of a magnesium alloy component, in which method the component is immersed in an anti-corrosion aqueous solution having a given temperature and containing permanganate ions MnO4-and dihydrogen phosphate ions H2PO4-for a given time. According to the invention, the anticorrosive aqueous solution contains permanganate ions [MnO4-] at a molar ion concentration of 0.18 mol / L or more and 0.32 mol / L or less prior to immersion of the component, the pH of the corrosion-resistant aqueous solution is maintained at a value greater than or equal to 3.2 and less than or equal to 4.2, preferably greater than or equal to 3.4 and less than or equal to 4.0 for the given time by adding phosphoric acid, and after the given time, the part is removed from the aqueous solution and flushed with water.

To provide a polishing liquid and polishing method that enable polishing in the low polishing rate region without changing the mechanical polishing conditions, thereby obtaining a high-quality polished surface.SOLUTION: The polishing liquid for a semiconductor substrate including permanganate ions and water contains at least one type of phosphate or phosphoric acid. The phosphate concentration (total content) is 0.005 mol / L or more and less than 0.02 mol / L. This facilitates polishing in the low polishing rate range without changing the mechanical polishing conditions, thereby obtaining a high-quality polished surface.SELECTED DRAWING: Figure 3

A method for anti-corrosion treatment of a magnesium alloy part, the method comprising bringing a portion of the part, at least locally, into contact with an anti-corrosion substance for a predetermined period, using an applicator member. An anti-corrosion substance contains permanganate MnO4− ions, dihydrogen phosphate ions H2PO4− and an epoxy gel. After the predetermined period, the method comprises rinsing the portion of the part with water.