68 results about "Ferric iron compound" patented technology

The present application provides an electrode for a lithium ion secondary battery, the electrode having an active material layer containing a particulate active material, the active material containing an organic sulfur compound and an iron compound, wherein A S , A F , and D satisfy the following inequality (1) A S × A F × D > 7000, wherein A s represents the content of sulfur element in the active material, in mass%, A F represents the content of iron element in the active material, in mass%, and D represents the coating density of the active material, in mg / cm 2 The present application aims to improve the comprehensive performance of the charge-discharge capacity, capacity retention rate, and energy density of a lithium ion secondary battery.

A method for treating a gastrointestinal condition includes preparing an aqueous extract of bioactive compound by adding dried green tea material to hot water and filtering the aqueous extract; adding a solution of an iron-containing compound to the filtered aqueous extract to form a complex or chelate of the bioactive compounds with iron; and drying the solution at a temperature between 80 to 150 degrees Fahrenheit to obtain a fine granular or powdered state.

The invention discloses a method for treating antibiotic wastewater by using a nano confinement iron cluster catalyst. The method comprises the following steps: mixing and pyrolyzing an iron-containing compound and a carbon and nitrogen-containing precursor to prepare the nano confinement iron cluster catalyst, and then, adding the catalyst and an oxidizing agent into antibiotic-containing wastewater to carry out catalytic oxidation reaction. According to the catalyst, a high-activity iron cluster is stabilized by utilizing a nano confinement effect, an oxidizing agent can be efficiently activated, antibiotics are rapidly degraded through a non-free radical path with synergistic singlet oxygen and electron transfer, and the catalyst shows excellent catalytic activity, cycling stability and adaptability to different water qualities. The method is simple in process, mild in condition and environment-friendly, and a new strategy is provided for efficient deep treatment of the antibiotic wastewater.

Provided is a novel method for producing an adsorbent comprising an iron compound and having a large adsorption capacity. An adsorbent having a specific surface area of 200 m2 / g or more, a primary particle size of 10 nm or less, an iron content of 450 g / kg or more, and a moisture content of 100 g / kg to 300 g / kg can be obtained by the method for producing an adsorbent, the method including: a first step for adding a polyferric sulfate aqueous solution to an alkali aqueous solution to form a slurry; a second step for adjusting the pH of the slurry to 5.0 to 9.0; and a third step for subjecting the slurry to solid-liquid separation, washing the obtained cake, and adjusting the moisture content of the washed cake.

The invention relates to a metallurgical treatment method of high-grade cobalt-containing copper sulfide concentrate, which comprises the following steps: carrying out first-stage presoaking on the cobalt-containing copper sulfide concentrate to obtain first-stage presoaking liquid and first-stage presoaking slag; grinding the first-stage presoaking residues until the particles of the first-stage presoaking residues are smaller than 200 meshes and account for 95 wt% or above, introducing oxygen, and performing second-stage presoaking to obtain second-stage presoaking liquid and second-stage presoaking residues; the copper grade of the cobalt-containing copper sulfide concentrate is 60 wt% or above. In the presoaking process, a large amount of copper oxide minerals and iron compounds are leached into a solution, so that the iron content in the presoaking residues is reduced, and generation of refractory substances such as copper ferrite is reduced; and compared with the raw ore amount, the ore amount is reduced by 40% or above, the follow-up recovery difficulty is remarkably reduced, and the leaching rate of the cobalt-containing copper sulfide concentrate is effectively increased.

The invention relates to the technical field of preparation of lithium ion battery positive electrode materials, in particular to an in-situ composite perovskite positive electrode active material and a preparation method and application thereof. The preparation method of the in-situ composite perovskite positive electrode active material comprises the following steps: mixing a lithium compound, a phosphate compound, a carbon source, a rare earth metal compound, a cobalt compound and / or a nickel compound with an iron compound or an iron compound and a manganese compound in a solvent to obtain mixed slurry; carrying out spray drying on the mixed slurry to obtain composite precursor powder; and sequentially carrying out pre-sintering treatment and formal sintering treatment on the composite precursor powder to prepare the in-situ composite perovskite positive electrode active material. Through the solution mixing and co-sintering process, the in-situ compounding of the perovskite phase and the positive electrode base material at the atomic scale is realized, the interface bonding and ion transmission efficiency between the perovskite phase and the positive electrode base material are remarkably enhanced, and the cycling stability is remarkably improved while the high capacity of the obtained positive electrode active material is maintained.

The invention relates to a positive electrode active material precursor for a lithium ion secondary battery and a method for producing the positive electrode active material precursor for a lithium ion secondary battery. A positive electrode active material precursor for a lithium ion secondary battery, the positive electrode active material precursor containing a metal composite hydroxide in the form of particles having a core-shell structure in which the surface is coated with an iron compound, the core-shell structure comprising a core part and a shell part, the core part containing nickel and aluminum as metal elements, and the shell part containing nickel and aluminum as metal elements. The core part contains iron as a metal element, when the composition of the core part is represented by Ni (1-x) Alx (OH) 2, 0.01 < = x < = 0.2, and the molar ratio (M2 / M1) of the molar amount (M1) of the metal element of the core part to the molar amount (M2) of the metal element of the shell part is M2 / M1 = 1 / 100-1 / 5.

The invention discloses a method for treating zinc smelting jarosite slag, which comprises the following steps: uniformly mixing the zinc smelting jarosite slag with biochar and calcium oxide source solid waste, roasting, and reducing an iron compound in the zinc smelting jarosite slag by using reducing gases such as H2, CO and CH4 generated by pyrolysis of the biochar, thereby obtaining the zinc smelting jarosite slag. And sulfur compounds in the iron vitriol slag are fixed through the added calcium oxide source solid waste to generate calcium sulfate, then air is introduced for continuous roasting, iron powder obtained through reduction is oxidized into ferroferric oxide, and finally ferroferric oxide powder is obtained through magnetic separation. The method not only is low in energy consumption, but also can reduce emission of greenhouse gas CO2 generated by incineration treatment of the biomass raw materials and release of sulfides in the iron vitriol slag.

A polishing slurry for polishing surfaces containing tungsten material, the slurry containing abrasive grains, an iron-containing compound, and an oxidizing agent, wherein the abrasive grains comprise silica particles, the average particle size of the abrasive grains is 40–140 nm, and the silanol group density of the silica particles is 8.0 particles / nm. 2 The following is a grinding method that uses a grinding fluid to grind a surface containing tungsten material.

The present invention provides a cathode active material comprising primary particles which include at least one transition metal and further comprise an iron phosphide compound, and thus exhibiting excellent charge / discharge capacity and rate performance on the basis of excellent electronic conductivity.

This invention discloses a three-dimensional self-supporting electrode, its preparation method, and a lithium-ion battery. The preparation method includes the following steps: dissolving resorcinol and formaldehyde in a mixed solution of ethanol and water, adding ammonia, and stirring until fully mixed to obtain an organic polymer solution; adding an iron-containing compound to the organic polymer solution and stirring until fully dissolved to obtain a precursor solution; transferring the solution to a reaction vessel, placing a three-dimensional conductive substrate in the reaction vessel for hydrothermal reaction to obtain a three-dimensional self-supporting substrate containing an iron / carbon precursor; drying the three-dimensional self-supporting substrate containing the iron / carbon precursor, annealing it in an inert atmosphere, and naturally cooling it to room temperature to obtain a three-dimensional self-supporting electrode loaded with in-situ carbon-coated nano-Fe3O4. The preparation method provided by this invention is simple and low-cost, and the three-dimensional self-supporting electrode exhibits good cycle stability and rate performance, making it suitable for large-scale industrial production and widely applicable in the field of lithium-ion battery materials.

To suppress an unpleasant odor when an iron compound and collagen peptide or elastin peptide are formulated in an oral liquid composition.SOLUTION: The oral liquid composition comprises (A) an iron compound, (B) at least one peptide selected from the group consisting of collagen peptide and / or elastin peptide, and (C) at least one plant extract selected from the group consisting of lemon balm extract, Houttuynia cordata extract, artichoke extract and rosemary extract.SELECTED DRAWING: None

The present application relates to a composite cathode active material comprising an iron phosphide compound, and further discloses a preparation method thereof, as well as an application thereof for use in the preparation of battery positive electrode plates and secondary batteries. The composite cathode active material of the present application comprises lithium iron phosphate particles, lithium iron phosphate particles coated with carbon, lithium iron phosphate particles coated with an iron phosphide compound, lithium iron phosphate particles coated with an iron phosphide compound and carbon, and iron phosphide compound particles.

A positive electrode active material precursor for a lithium-ion secondary battery, containing a metal composite hydroxide, whereinthe metal composite hydroxide is in a form of a particle having a core-shell structure whose surface is coated with an iron compound,the core-shell structure is constituted by a core portion and a shell portion,the core portion contains nickel and aluminum as metal elements,the shell portion contains iron as a metal element,when a composition of the core portion is represented by Ni(1-x)Alx(OH)2,0.01≤x≤0.2 is satisfied,anda molar ratio (M2 / M1) between a molar amount M1 of the metal element in the core portion and a molar amount M2 of the metal element in the shell portion satisfiesM2 / M1=1 / 100⁢ to⁢ 1 / 5.

This magnetic material comprises magnetic nanoparticles (10) and a low-carbon organic substance (20) having 4 or less carbon atoms. The low-carbon organic substance (20) comprises C, N, O, and H, and has a structure having an amide bond. The magnetic nanoparticles (10) are each formed of Fe, an Fe-containing alloy material, or an Fe-containing compound. The magnetic nanoparticles (10) each have a mean particle diameter of 20-200 nm when being calculated as a ball having the same volume, and have a volume fraction of 80-95 vol%.

The application discloses a preparation and application of an iron-doped titanium suboxide electrode. The iron-doped titanium suboxide electrode is prepared by mechanically treating an iron compound and titanium suboxide, is used as an anode, and is used for synthesizing a disinfectant with natural seawater as an electrolyte and being coupled with photovoltaic technology, so that a solar energy driven electrolysis device is successfully constructed, the disinfectant with active components of hypochlorous acid is synthesized, and pathogenic bacteria in ballast water are killed. The electrode is composed of non-noble metal elements, and the price is much lower than that of a commercial size stable anode composed of noble metals ruthenium and iridium, and the electrode shows a reaction activity which is significantly higher than that of the commercial size stable anode, and the problem that high-abundance chlorine ions in seawater are difficult to be selectively oxidized to hypochlorous acid is solved. The electrode is stable in chemical properties, friendly to the environment, and cannot cause secondary pollution, and can be driven by solar energy to electrochemically synthesize a disinfectant without depending on power resources in ocean navigation, so that disinfection and sterilization of ship ballast water are realized, and the electrode is very worth promoting.

A chemical mechanical polishing composition comprises, consists of, or consists essentially of a liquid carrier, ceria particles in the liquid carrier, an oxidizer including an iron (iii) compound or a cerium (IV) compound, an acid having a ligand including an aromatic group or a nitrogen containing aromatic group, and has a pH of less than about 4. A method for polishing a hard carbon containing substrate includes contacting the substrate with the polishing composition and abrading the substrate with the polishing composition to remove a portion of the hard carbon layer from the substrate and thereby polish the substrate.

The invention provides a preparation method and application of ammonium ferric citrate. The preparation method of the ferric ammonium citrate comprises the following steps: carrying out a first reaction on an iron compound and first ammonia water, introducing air in the process of the first reaction, and preparing a first slurry, and carrying out solid-liquid separation on the first slurry, taking a solid, carrying out second reaction on the solid, second ammonia water and citric acid in a solvent, and concentrating to prepare the ferric ammonium citrate. According to the preparation process of the ferric ammonium citrate, the generation of hydrogen and the use of a strong oxidant in the traditional process are avoided, the safety of the production process is improved, the ferric ammonium citrate with few impurities and high purity is obtained, qualified diammonium hydrogen phosphate is co-produced, and the preparation process has a great application prospect.

This invention relates to the field of phosphoric acid wastewater purification technology, and discloses a composite agent, its preparation method, and its application. The composite agent contains calcium-containing substances, iron-containing substances, aluminum-containing compounds, diatomaceous earth, and activated carbon. The calcium-containing substances are calcium-containing compounds and / or calcium-containing minerals, and the iron-containing substances are iron-containing compounds and / or iron-containing minerals. Based on the total weight of the composite agent, the content of the calcium-containing substances is 30wt%~75wt%, the content of the iron-containing substances is 5wt%~15wt%, the content of the aluminum-containing compounds is 10wt%~20wt%, the content of the diatomaceous earth is 5wt%~25wt%, and the content of the activated carbon is 5wt%~25wt%. This composite agent can achieve efficient removal of phosphorus, acid, and organic matter from wastewater, while improving the degree of process automation, resulting in stable treatment effects and reduced treatment costs.

The invention provides a remote large-steric-hindrance substituted phenanthroline framework iron complex and a ligand compound thereof, a catalyst composition containing the complex and application of the complex to catalysis of ethylene oligomerization and polymerization reactions, and the complex shows excellent catalytic activity and thermal stability in catalysis of ethylene oligomerization and polymerization reactions. The catalytic performance of the iron complexes is obviously superior to that of similar iron complexes with other phenanthroline frameworks.

Provided are concrete wastewater treatment device and system, pertaining to the field of concrete wastewater treatment. The concrete wastewater treatment device includes a first wall and a CO2 input pipe. The first wall encloses a first chamber, with the first wall being provided with a first liquid inlet and a first liquid outlet. The first liquid outlet is positioned higher than the first liquid inlet. The first chamber is equipped with a groove for accommodating reducing agent powder, which includes at least one of elemental iron, divalent iron compounds, and elemental aluminum. The CO2 input pipe is used to deliver CO2 into the first chamber, with the gas outlet end of the CO2 input pipe being close to or located within the groove. The gas outlet direction of the CO2 input pipe is configured such that the conveyed CO2 can induce turbulence and agitation in the reducing agent powder.

The present application provides an electrode for a lithium ion secondary battery, the electrode having an active material layer containing a particulate active material, the active material comprising an organic sulfur compound and an iron compound, A S , A F and M satisfy the following inequality (1) A S × A F × M > 1600, where A S represents the sulfur element content (mass %) in the active material, A F represents the iron element content (mass %) in the active material, and M represents the median particle diameter (μm) of the active material. The present application aims to improve the comprehensive performance of the charge-discharge capacity and capacity retention rate of a lithium ion secondary battery.

The present application aims to improve the volumetric energy density of an active material constituting an electrode of a lithium ion secondary battery while maintaining the capacity retention rate thereof. The present application provides a method for preparing a sulfur-based active material, comprising the following steps: (1) mixing an acrylic resin, sulfur, and an iron compound containing divalent or trivalent iron ions to obtain a raw material; and (2) calcining the raw material; wherein the median particle size of the iron compound is 12.00 pm or less.

The present application relates to the field of battery, especially to a carbon-coated lithium iron phosphate, a preparation method, a lithium battery positive electrode material and an electrode sheet, the preparation method comprising mixing an iron-containing compound, a phosphorus-containing compound, a lithium-containing compound and a carbon-iron-containing compound, carrying out a hydrothermal reaction and calcination to obtain the carbon-coated lithium iron phosphate. The preparation method provided by the present application can uniformly coat the glucose acid root on the surface of the lithium iron phosphate under high-temperature conditions in the reaction kettle through the chemical bond effect of ferrous gluconate itself, and the ferrous ions in the ferrous gluconate can also completely enter the synthesis reaction of the lithium iron phosphate, which can make the lithium iron phosphate have higher crystallinity to some extent, and help to improve the specific capacity and the conductivity of the material.

The application relates to a slow-release metal ion phosphate antibacterial glass and a preparation method thereof. The antibacterial glass is prepared from the following powders according to percentage by weight: 1-10% of a copper compound, 0.2-2% of an iron compound, 0-5% of an aluminum compound, 1-10% of a zinc compound, 0.5-5% of a boron compound, 2-4% of a silver compound, 10-30% of a sodium compound, 35-70% of a calcium compound, and at least one compound in the powders is a phosphate or an oxide of phosphorus; the preparation method comprises the following steps: mixing the powders, stirring the mixed powders at a speed of 500-1000 revolutions per minute for 10-20 minutes, heating the stirred powders, keeping the temperature at 900-1150 DEG C for 0.5-2 hours to obtain a melt, pouring the melt into a mold, and cooling and shaping to obtain the antibacterial glass. The antibacterial glass can exert excellent bacteriostatic effect by slowly releasing silver ions and zinc ions, and the appearance does not change during use, so that the problem of blackening of the existing products in a humid environment is solved.

The present invention provides: a method for producing iron phosphide nanoparticles, which is simple and is highly safe to the human body, wherein iron atoms in iron phosphide nanoparticles obtained by this method are in a low valence state and the iron phosphide nanoparticles are stable under atmospheric conditions; a composite body containing the iron phosphide nanoparticles obtained by the method; and a reductive amination catalyst using the same. The present invention relates to a method for producing iron phosphide nanoparticles, in which a phosphorus compound, an iron carbonyl compound, and a surfactant are mixed under heat, wherein the iron carbonyl compound is Fe3(CO)12, and 1-octadecene is not used.

The invention discloses a toltrazuril nano suspension and a preparation method thereof, and belongs to the technical field of veterinary drug preparations. The suspension contains toltrazuril, an iron compound, a bacteriostatic agent, a suspending aid, a stabilizer and the balance of water. According to the invention, an ultrahigh-pressure nano homogenizer technology is adopted, the medicine is prepared into a nano-scale particle size, and the medicine is uniformly dispersed in the preparation, so that the medicine has good stability and dispersibility. The preparation not only can be used for effectively preventing and treating animal coccidiosis, but also can improve animal anemia, and has a wide clinical application prospect.

The application discloses a kind of iron-containing pseudo-boehmite, anti-leakage oxygen protective sulfur recovery catalyst and preparation method, in the preparation method for preparing pseudo-boehmite using hydrothermal method, iron-containing compound, amphiphilic surfactant and organic solvent are added;During hydrothermal reaction, the amine group of the head of amphiphilic surfactant and the alkyl of tail are located in aqueous phase and oil phase respectively, the hydroxyl on the surface of pseudo-boehmite crystal nucleus and the amine group of the head of surfactant condensation reaction occurs, and oil-in-water Pickering emulsion reaction system is formed, and iron-containing pseudo-boehmite is finally prepared by reaction.The iron-containing pseudo-boehmite is formed and used as anti-leakage oxygen protective sulfur recovery catalyst, to avoid the problems of existing impregnation method for preparing iron-containing catalyst, such as a large amount of waste water and waste liquid generated in production process, and low iron utilization rate of catalyst.

The application discloses a kind of methods for hydrogen production by ammonia cracking, belong to plasma catalysis and hydrogen energy technical field.The method uses iron-containing solid waste residue as catalyst, the iron-containing solid waste residue includes iron-containing compound, the iron-containing compound includes iron oxide and ferrite compound, the ferrite compound is composed of at least one element in calcium, aluminum and silicon and iron and oxygen element, the method of the application is under the action of plasma, catalyst surface active structure is enhanced, iron species may occur in situ phase transition, form active phase that is beneficial to ammonia molecular adsorption activation and N-H bond rupture, so that higher ammonia conversion rate and hydrogen production efficiency are realized under lower temperature conditions, while reducing the dependence on noble metal catalyst, realize the high-value utilization of industrial solid waste.