33 results about "PERMANGANATE ION" patented technology

A machining process for a SiC substrate includes polishing the SiC substrate while an acidic polishing solution containing an aqueous solution of dissolved permanganate salt is applied to one side of the SiC substrate, and cleaning that side. Cleaning that side of the SiC substrate involves applying a reducing rinsing solution, capable of reducing a metal oxide and permanganate ions, to that side of the SiC substrate while the rotary table is rotated and the other side of the SiC substrate is held on the rotary table. The process then stops the application of the reducing rinsing solution and subsequently applies pure water to that side of the SiC substrate while the rotary table is rotated and the other side of the SiC substrate is held on it.

The invention belongs to the field of aldehyde removal materials, and particularly relates to a melt-blown film-manganese oxide composite aldehyde removal material and preparation and application thereof.The preparation method includes the steps that a melt-blown film is placed in a divalent manganese salt solution to be subjected to ultrasonic-assisted treatment, and the concentration of Mn < 2 + > in the divalent manganese salt solution is 0.4-1 M; placing the melt-blown film subjected to ultrasonic treatment in a permanganate radical source solution for surface reaction, and depositing manganese dioxide on the melt-blown film in situ to prepare the melt-blown film-manganese oxide composite formaldehyde removal material, the concentration of permanganate ions in the permanganate source solution is 0.35-0.45 M, and the molar ratio of Mn in the melt-blown film subjected to ultrasonic treatment to Mn in the permanganate source solution is 1: (2.5-15). The material provided by the invention can obtain excellent dealdehyding efficiency and effect under the condition of low formaldehyde.

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 invention relates to a chemical balancing reactor (40) for an electro-chemical 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 gas mixture containing at least dihydrogen; and - a separator (43) which extends between the first compartment (41) and the second compartment (42), the separator comprising a porous membrane which is suitable for allowing contact between the gas mixture and the electrolyte solution (24) and for preventing the electrolyte solution (24) from passing from the first compartment (41) into the second compartment (42).

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.

This polishing material slurry comprises: manganese oxide abrasive grains containing manganese oxide particles; permanganate ions; a phosphoric acid; and a polymer additive containing one or more water-soluble organic polymers selected from the group consisting of polycarboxylic acids, polycarboxylate salts, salts of naphthalene sulfonic acid formaldehyde condensates, polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone, and copolymers thereof. The method for polishing the polishing material slurry according to the present invention comprises polishing an object to be polished using the polishing material slurry according to the present invention.

The invention belongs to the technical field of ion detection and dye degradation, and particularly relates to a cadmium complex as well as a preparation method and application thereof. The chemical formula of the cadmium complex is [Cd (MIPMO) (NPTH) (H2O)], MIPMO is 4, 4 '-bis (2-methylimidazole-1-yl) benzophenone, and H2NPTH is 3-nitrophthalic acid. The cadmium complex disclosed by the invention has a fluorescent recognition function on uranyl ions and permanganate ions, can be used for detecting trace uranyl ions and permanganate ions in an aqueous solution, and has quenching constants of 6.26 * 10 < 3 > and 3.32 * 10 < 3 > respectively. The cadmium complex disclosed by the invention can effectively degrade methylene blue and methyl orange dyes.

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.

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

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.

This polishing material slurry comprises manganese oxide abrasive grains containing manganese oxide particles, permanganate ions, and phosphoric acids. The method for polishing the polishing material slurry according to the present invention comprises polishing an object to be polished using the polishing material slurry according to the present invention.

The invention relates to a preparation method of a fluorescent probe for detecting permanganate ions, which comprises the following steps: dissolving purslane powder and o-phenylenediamine (OPD) in ethanol, uniformly mixing, carrying out heating reaction, and cooling to room temperature to obtain a suspension; filtering and dialyzing the suspension to obtain a purified solution; carrying out rotary evaporation on the purified solution in a water bath to obtain a solute; and dissolving the solute in ultrapure water, and freeze-drying to obtain carbon quantum dot fluorescent probe powder. According to the invention, purslane is used as a precursor, o-phenylenediamine is used as a nitrogen doping agent, and the nitrogen-doped carbon nanodots (N-CDs) are synthesized through a solution heat reaction in ethanol. The obtained N-CDs shows excellent oxidation resistance, and shows excellent fluorescence stability under the conditions of extreme pH, salt concentration and continuous ultraviolet radiation. Meanwhile, the N-CDs have good selectivity on MnO4 <-> ions, the N-CDs and the MnO4 <-> ions are in a linear relation within the concentration range of 0.5-168 mu M, and the lowest detection limit reaches 41.8 nM.

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.

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.

A simple, cost-effective, chrome-free, and easy-to-maintain metallization of polymers is disclosed, specifically, an adhesion pre-treatment process before metallization of non-conductive polymers such as polyimides (PI), acrylonitrile-butadiene-styrene copolymer (ABS), its blend with polycarbonate (PC), polypropylene (PP) and, optionally, others to obtain decorative or / and functional metal coatings on polymer parts for various industries. The proposed adhesion pre-treatment process consists of a step of chrome-free and room temperature permanganate etching bath, containing inorganic acids, such as phosphoric acid or / and sulphuric acid, permanganate ions, and additionally two other compounds of copper and ammonium ions, and water, as well as a step of etched surface subsequent treatment in cobalt activation bath with a cobalt ions concentration as low as 0.035 M. The invention allows a surprising double effect, namely, to promote the coating / polymer adhesion allowing utilization of the etching bath at room temperature, and to prolong significantly the service life of the etching bath.

The invention relates to a method for anticorrosion treatment of a magnesium alloy part, in which the part is immersed for a given duration in an anticorrosion aqueous solution having a given temperature and containing permanganate ions MnO4- and dihydrogen phosphate ions H2PO4-. According to the invention, the anticorrosion aqueous solution contains, prior to immersion of the part, a molar ion concentrate of permanganate ions [MnO4-] of greater than or equal to 0.18 mol / L and less than or equal to 0.32 mol / L, the pH of the anticorrosion aqueous solution is maintained for the given duration at a value of 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, by addition of phosphoric acid, and, after the given duration, the part is removed from the solution and rinsed with water.

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 present invention relates to a preparation method of a fluorescent probe for detecting permanganate ions, comprising the following steps: dissolving purslane powder and o-phenylenediamine (OPD) in ethanol, mixing evenly, carrying out a heating reaction, and then cooling to room temperature to obtain a suspension; filtering and dialyzing the suspension to obtain a purified solution; rotary evaporating the purified solution in a water bath to obtain a solute; dissolving the solute in ultrapure water and freeze-drying to obtain a carbon quantum dot fluorescent probe powder. In the present invention, purslane is used as a precursor and o-phenylenediamine is used as a nitrogen doping agent to synthesize nitrogen-doped carbon nanodots (N-CDs) by a solvothermal reaction in ethanol. The obtained N-CDs exhibit excellent antioxidant properties and show excellent fluorescence stability under extreme pH, salt concentration, and continuous ultraviolet irradiation conditions. At the same time, N-CDs have good selectivity for MnO4 ‑ ions, showing a linear relationship with MnO4 ‑ ions in the concentration range of 0.5-168 μM, and the lowest detection limit reaches 41.8 nM.

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.

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.

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,

A neutralizing composition comprising ascorbic acid as a reducing agent, citric acid as a chelator and a pH adjusting agent applied to microetched copper substrates bussed to stainless steel, which have been cleaned with an agent comprising permanganate ions. Unlike the prior art neutralizing agents comprising oxalic acid, which leave insoluble residue on the surface of the copper substrate, the present neutralizing composition leaves no residue and acts quickly. A surprising reduction in defects of Ni—Au plated copper substrates is achieved by utilization of the neutralization composition in a manufacturing process.

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.