42 results about "Permanganic acid" 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.

The invention discloses a water treatment method for high-algae, high-plankton and iron-manganese composite micro-pollution sources in the middle Yunnan region, and relates to the technical field of tap water treatment. According to the technical scheme, the method comprises the following steps: diluting 10-13% sodium hypochlorite stock solution to about 5%, and storing for later use; sodium hypochlorite is detected in the storage process through a portable chlorate detector; when the manganese content of the source water is lower than 0.15 mg / L, chlorine dioxide or potassium permanganate is added during pre-oxidation to remove iron and manganese; when the manganese content of the source water is higher than 0.15 mg / L, potassium permanganate is added to remove iron and manganese or potassium permanganate and chlorine dioxide are combined to remove manganese, and the addition of chlorine dioxide does not exceed 1.0 mg / L; pre-oxidizing and inhibiting the flea and the cyclops in the source water by using chlorine dioxide; cO2 needs to be added to reduce the pH of the source water. The method has the beneficial effects that the using effect of sodium hypochlorite is optimized, iron-manganese composite micro-pollution is effectively removed, high plankton is inhibited and killed, the pH value of source water is adjusted, the aluminum content is controlled, the water treatment efficiency and economical efficiency are improved, the adaptability is high, popularization is easy, and the method has important significance for guaranteeing drinking water safety and improving the water treatment efficiency.

To provide a pretreatment cleaning agent for electroless plating and a method for forming electroless plating using the same that eliminate the need of surface roughening to a substrate with a strong acid such as a chromic acid or permanganic acid, can perform cleaning of the surface of a substrate and coupling treatment at the same time, and can form metal plating having a flat contact surface to a substrate.SOLUTION: A pretreatment cleaning agent for electroless plating includes an inorganic alkali, a cleaning agent including a surfactant, and a silane coupling agent and can perform cleaning of the surface of a substrate and coupling treatment at the same time.SELECTED DRAWING: Figure 1

The invention relates to the field of heavy metal detection, in particular to a boron-doped carbon quantum dot and a preparation method and application thereof. In order to realize synchronous detection of dichromate radicals and permanganate radicals, curcumin and m-phenylenediamine are used as a carbon source and a nitrogen source, boric acid is used as a boron element doping agent, and the boron-doped carbon quantum dots are obtained by adopting a one-step solvothermal method. Wherein curcumin and m-phenylenediamine are used as precursors, boric acid is used as a boron element doping agent, and the boron-doped carbon quantum dots are synthesized. The preparation method is simple, and the prepared B-N-CDs has blue-green fluorescence, shows excellent biocompatibility and photobleaching resistance, is successfully applied to detection of Cr2O7 < 2-> and MnO4 <-> in water, is successfully applied to the field of fluorescent ink, and has potential value in the aspect of anti-counterfeiting marks.

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 relates to a method for preparing ferromanganese phosphate from potassium permanganate, which comprises the following steps: adding an oxidizing agent into a solution containing iron ions, divalent manganese ions and phosphoric acid to form ferromanganese phosphate precipitate, and the oxidizing agent is selected from manganic acid, alkali metal salt of manganic acid, permanganate, alkali metal salt of permanganate or ferric permanganate, preferably potassium permanganate or ferric permanganate. According to the preparation method of the ferromanganese phosphate, the ferromanganese phosphate product can be stably obtained, and the proportion of Mn to Fe in the ferromanganese phosphate can be adjusted according to needs.

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 method for preparing azoimidazole-modified Mn-Mg nanoclusters for catalyzing the copolymerization of carbon dioxide and propylene oxide, which belongs to the technical field of polymer materials; the method uses potassium permanganate and tetrabutylammonium bromide as basic raw materials, and obtains tetrabutylammonium permanganate salt after reaction. Then, pivalic acid, tetrabutylammonium permanganate salt, manganese acetate tetrahydrate and magnesium acetate tetrahydrate are reacted, and the product is reacted with azodiimidazole propane, and finally, azoimidazole-modified Mn-Mg nanoclusters are obtained, which are catalysts used for the copolymerization of carbon dioxide and propylene oxide; the raw materials used in the preparation method are easy to obtain, and the method is applied to the copolymerization of carbon dioxide and propylene oxide, with high catalytic efficiency and mild reaction conditions.

The invention provides a method for synthesizing a bionic water splitting catalyst containing rare earth ions in one step. According to the method disclosed by the invention, trivalent manganese salt, trivalent rare earth X salt, organic carboxylic acid R1COOH, micromolecules containing amide groups and tetrabutylammonium permanganate are taken as raw materials, and the Mn4XO4 <-> or Mn4XO5 <-> cluster compound is efficiently synthesized under a mild condition through a one-step reaction. Compared with methods disclosed in literatures, the synthesis method is simpler to operate, milder in reaction condition, cheap in raw material, high in product yield and more suitable for large-scale preparation of cluster compounds.

The invention discloses a manganese sulfate solution-based sodium permanganate in-situ reaction deep adsorption molybdenum removal process, which comprises the following steps of: taking a manganese sulfate solution, and pouring the manganese sulfate solution into a container; the PH value of the solution in the container is adjusted to 3.0-3.5, and the temperature in the container is increased to 60 DEG C or above; sodium permanganate is added into the manganese sulfate solution, manganese sulfate is oxidized by permanganate radicals in the sodium permanganate, chemical manganese dioxide is directly generated in the container, and molybdenum in the container is adsorbed by the chemical manganese dioxide. The method has the beneficial effects that potassium ions are not remained in the solution after the oxidant is added, the problem of overhigh concentration of the potassium ions in the solution can be directly avoided, and when the concentration of the potassium ions in the electrolytic manganese dioxide for preparing the alkaline zinc-manganese battery is overhigh, the corrosion of a zinc negative electrode in the alkaline zinc-manganese battery can be reduced, and the service life of the alkaline zinc-manganese battery is prolonged. The molybdenum removal process has the advantage that the concentration of the residual potassium ions in the manganese sulfate solution is relatively low.

The present invention relates to a composition for cleaning surfaces and / or for detecting organic substances in a solution or on a surface, comprisinga) at least one salt of the permanganic acid, ferric acid and / or chromic acid,b) at least one organic phosphonate andc) at least one persulphate,wherein the at least one organic phosphonate has a general formula (I)wherein R1 is an organic moiety, X1 is OH or OM1 and X2 is OH or OM2, wherein M1 and M2 represent an alkali metal ion or ammonium ion, wherein the organic moiety R1 is a mono-substituted or multiple-substituted or unsubstituted C1-C12 alkyl moiety, C3-C10 cycloalkyl moiety or C6-C14 aryl moiety, wherein the organic moiety may be attached to 1 to 3 further phosphonate groups of the general formula (I).

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.

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 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 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.

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.

The invention discloses a kind of organic material based on fluorene ring and its preparation method and application, the present invention synthesizes a kind of organic material 9-bis(3-benzoic acid)ethylene-fluorene based on fluorene ring and carboxyl group for the first time, the material has obvious aggregation-induced luminescence effect, its luminous performance is weak in benign solvent, and the luminous performance in poor solvent is strong. The material can be used for detecting aqueous phase permanganate, and simultaneously because it is carboxyl group, compared to other fluorene compounds, can be more with the metal species of oxygen coordination, is more widely used, and preparation method is simple, yield is high, reaction activity is good, can be applied and promoted on a large scale.

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.

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.

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.