12 results about "Permanganic acid" 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

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.

The present application belongs to the field of gas treatment, and particularly relates to a neodymium-doped delta-MnO2 aldehyde removal material, a preparation method, application and aldehyde removal product thereof, wherein the preparation method of the neodymium-doped delta-MnO2 aldehyde removal material is as follows: a solution A containing a divalent manganese source and a neodymium source is obtained, a solution B containing permanganate is obtained, the solution A and the solution B are synchronously added into a bottom liquid to perform a nucleation reaction, and then a crystallization treatment is performed to obtain the neodymium-doped delta-MnO2 aldehyde removal material; wherein the molar ratio of the divalent manganese source and the neodymium source in the solution A is 1:0.01-0.3; the molar ratio of the divalent manganese source in the solution A and the permanganate source in the solution B is 1:0.6-1; the temperature of the nucleation reaction is 15-45 DEG C; and the temperature of the crystallization treatment is above 70 DEG C. Through in-depth research, the present application innovatively uses neodymium to participate in the synthesis process of manganese dioxide, cooperates with the dosage of Nd, and jointly controls the nucleation temperature and the crystallization temperature, so that the formation of a delta phase can be unexpectedly induced, and in addition, the formation of a flower-like morphology conducive to the removal of formaldehyde can also be induced.

The invention discloses a micropore technology for improving copper surface binding force. Micropores are formed in the copper surface of an AMB / DBC product, the specific surface area of bonding copper is increased, the anchoring effect is generated, and the binding force of EMC and the copper surface is improved. The micro-pores are concave and convex by stripping copper, so that the problem of oxide layer stripping does not exist above a certain thickness; the micropore forming method comprises sulfuric acid and hydrogen peroxide series, sodium chloride and hydrochloric acid series, permanganate and copper sulfate series, ammonia and peroxyphosphate series, plasma etching and laser copper surface micropore machining. According to the micropore technology for improving the copper surface binding force, the wet etching technology is adopted, the surface energy difference of copper crystal faces is utilized, the etching rate difference of the crystal faces with low reactivity and the crystal faces with high reactivity is maximized, and therefore the overall surface roughness change is minimized, and meanwhile the copper surface binding force is improved. And micropores with certain sizes and depths are locally formed, so that the EMC binding force is obviously improved.

The invention provides a preparation method and application of a targeted synchronous passivation material for cadmium-arsenic combined polluted soil. The preparation method of the targeted synchronous passivation material comprises the following steps: in a whole-course nitrogen closed atmosphere, pumping a metal salt dispersion liquid and a precipitant solution at a constant speed by using a peristaltic pump, mixing with a permanganate modified solution, keeping water bath heating and magnetic stirring, then keeping room temperature aging, and separating, washing and drying an obtained solid-liquid mixed phase to obtain the targeted synchronous passivation material. The targeted synchronous passivation material for the cadmium and arsenic combined polluted soil is obtained. The permanganate modified solution is a potassium permanganate solution prepared from water without carbon dioxide, and the concentration of the permanganate modified solution is 0.25-0.75 mol / L; the pumping speed of the metal salt dispersion liquid and the precipitant solution is controlled to control the pH value of a mixed system after the metal salt dispersion liquid and the precipitant solution are pumped to be 10.5-11.5. The targeting synchronous passivation material prepared by the invention can oxidize As (III) into low-toxicity stable As (V), and ecological hazards of cadmium and arsenic can be reduced from the source.

The application provides a method for one-step synthesis of a rare earth ion-containing biomimetic water splitting catalyst. The method of the application uses a trivalent manganese salt, a trivalent rare earth X salt, an organic carboxylic acid R1COOH, an amide group-containing small molecule and a tetrabutylammonium permanganate salt as raw materials, and efficiently synthesizes a Mn4XO4- or Mn4XO5- cluster under mild conditions through one-step reaction. Compared with the method disclosed in the literature, the synthesis method is simpler in operation, milder in reaction condition, cheaper in raw material and higher in product yield, and is more suitable for large-scale preparation of the cluster.

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.

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.

The present application relates to a kind of preparation method of specific crystal form manganese dioxide and its application in the ring addition reaction of CO2 and propylene oxide, belong to catalyst preparation and application technical field, its preparation method is as follows: the potassium permanganate of certain concentration and manganese sulfate are fused and heated to specified temperature, under the control of microflow, with certain flow rate is uniformly mixed in the reaction kettle and is reacted, after standing, washing, adjusting pH, drying, grinding, the target catalyst is obtained.In the catalyst prepared, the catalytic activity of δ-MnO2 is the best, the conversion rate of propylene oxide is the largest and reaches 100%, the selectivity of propylene carbonate reaches more than 99%.The preparation method is simple, δ-MnO2 can be mass-produced, the production cost is low, the yield is higher, is used to catalyze propylene oxide and CO2 conversion into propylene carbonate, the selectivity is high, and can be recycled four times, has extensive industrialization prospect.

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.