18 results about "Iron sulfide" patented technology

This application provides an iron-based thin-film probe, an in-situ analysis method for soil micro-interface pollutants, a screening method for iron-based materials for soil remediation, and a soil remediation method, belonging to the field of environmental analysis and testing technology. The iron-based thin-film probe, used to study the role of iron-containing mineral micro-interface pollutants in soil, is prepared from an iron sheet through in-situ surface modification; wherein the modified surface formed by the in-situ surface modification is selected from any one of nano-zero-valent iron, iron oxide, and iron sulfide; the iron-based thin-film probe is used to simulate the adsorption, distribution, and redox reactions of iron-containing mineral micro-interface pollutants in soil.

The application discloses a kind of composite photothermal film, the composite photothermal film is with hydrophilic filter membrane as carrier, carbon / iron sulfide is loaded on carrier;Wherein, the side of hydrophilic filter membrane loaded with carbon / iron sulfide is grafted with hydrophobic group.The application also discloses the preparation method of the above-mentioned composite photothermal film, comprising the following steps: (1) heat treatment is carried out to coal slime, and coal slime is carbonized;(2) carbonized coal slime is mixed with pyrite, after mixing, high-temperature calcination is carried out under inert atmosphere, and carbon / iron sulfide powder is obtained;(3) carbon / iron sulfide powder is dispersed in solvent, after ultrasonic treatment, it is loaded on hydrophilic filter membrane by vacuum filtration;(4) polyethylene glycol solution containing hydrophobic agent is used to carry out one side hydrophobic modification to the hydrophilic filter membrane obtained in step (3) by vacuum filtration, and the composite photothermal film with Janus structure of surface layer hydrophobic, lower layer hydrophilic is obtained;Wherein, the side loaded with carbon / iron sulfide is hydrophobic side.The application finally discloses a high-salinity wastewater treatment device containing the above-mentioned composite photothermal film.

This invention discloses a transition metal sulfide@wood charcoal self-supporting electrode material, its preparation, and its application. The invention involves carbonizing delignified wood in an inert gas atmosphere to obtain three-dimensional porous conductive wood charcoal; dispersing a nickel and iron source in a solvent to obtain a mixed solution A; subjecting the wood charcoal to a hydrothermal reaction in mixed solution A to obtain wood charcoal loaded with metal double hydroxides; dispersing a molybdenum and sulfur source in a solvent to obtain a mixed solution B; and subjecting the wood charcoal loaded with metal double hydroxides to a hydrothermal reaction in mixed solution B to obtain a wood charcoal electrode loaded with molybdenum sulfide and nickel-iron sulfide nanosheets, which is the transition metal sulfide@wood charcoal self-supporting electrode material. This invention utilizes a simple two-step hydrothermal method to synthesize the transition metal sulfide@wood charcoal self-supporting electrode material, constructing a heterostructure of molybdenum sulfide and nickel-iron sulfide nanosheets, thereby improving electrocatalytic activity and stability.

The application discloses a MOFs derived iron sulfide heterogeneous electro-Fenton catalyst, a preparation method thereof and application of the catalyst in degradation and removal of organic pollutants. The preparation method of the catalyst is as follows: iron metal organic framework material MOFs and sublimed sulfur are mixed, supercritical technology is used to make the sulfur easily enter the MOFs material channel, and then calcination is performed to make the MOFs framework collapse, and the sulfur element reacts with the metal iron element to generate iron sulfide, so that the electron transfer efficiency of the material is further improved, and the pH of the Fenton reaction is widened. The catalyst synthesis process is simple, convenient and controllable, the prepared granular catalyst is applied to a heterogeneous electro-Fenton system, has good catalytic effect, and overcomes the defect that a traditional electro-Fenton catalyst is difficult to recover. The method provides an innovative method for a heterogeneous electro-Fenton cathode.

The application discloses an oxygen-doped cobalt-iron sulfide composite material and a preparation method and application thereof, wherein the oxygen-doped cobalt-iron sulfide composite material comprises: a conductive substrate and an oxygen-doped cobalt-iron sulfide grown on the conductive substrate. The conductive substrate can be directly used as an electrode while increasing the conductivity of the material, facilitating the electrocatalytic hydrogen evolution reaction of the catalyst; the introduction of the Fe element causes the electron transfer of Co to Fe, regulates the electronic structure of CoS2, improves the conductivity of the catalyst, the further doping of O causes the electron redistribution, increases the electron density of S, promotes the adsorption of H at the S site, and significantly reduces the S site of the catalyst H* , thereby reducing the energy barrier of HER and accelerating the hydrogen evolution reaction. Tests prove that the oxygen-doped cobalt-iron sulfide composite material has excellent HER catalytic activity and persistent electrochemical stability.

This invention relates to the field of biomedical technology, and in particular to a method for preparing and applying a nanomedicine for treating deep endometriosis. The method involves mixing ferrous ammonium sulfate, trisodium citrate, and polyethyleneimine, then adding thioacetamide and triethanolamine via a solvothermal reaction to obtain two-dimensional iron sulfide nanosheets. Dopamine hydrochloride is then added and stirred at room temperature in anhydrous ethanol to obtain polydopamine-coated iron sulfide (FP). FP is then mixed with larotrectinib and anhydrous ethanol to obtain the nanomedicine FPL for treating deep endometriosis. The synthesis method of this invention is simple and highly operable; the product is stable and reproducible; FPL exhibits good biocompatibility and biodegradability. After entering the microenvironment of deep endometriosis lesions, it can responsively release larotrectinib, effectively inhibiting the Trk signaling pathway and significantly reducing the degree of nerve infiltration; simultaneously, the anti-inflammatory effect of the FP carrier alleviates the local inflammatory response, jointly inhibiting lesion progression.

The application discloses a non-acid scale dissolver for removing iron sulfide scale in a wellbore, which comprises the following components in mass ratio: a main agent, hexaazacyclic compound, 20-40%; an auxiliary agent, organic phosphonate, 15-35%; a penetrating agent, non-ionic surfactant, 1-5%; and water, the rest. The application also discloses a preparation method of the non-acid scale dissolver, which comprises mixing and stirring the raw materials and adjusting the pH value to obtain the non-acid scale dissolver. The scale dissolving rate of the scale dissolver to iron sulfide reaches more than 80%, which is close to the scale dissolving efficiency of an acid scale dissolver, and the scale dissolver is neutral, which is low in corrosion to the wellbore in the plugging removal process, and overcomes the serious corrosion problem caused by the traditional acid scale dissolver in the plugging removal process.

The present invention relates to a sulfur denitrification agent using sulfur-containing wastes, which can be recycled as a denitrification agent for water treatment by using discarded mine drainage sludge, sulfur-containing wastes generated in a hydrogen sulfide removal process, and the like. The sulfur denitrification agent using sulfur-containing wastes of the present invention includes, on the basis of the total weight, 50-70 wt% of mine drainage sludge, 15-30 wt% of waste iron sulfide generated in a hydrogen sulfide removal process, and 15-30 wt% of sulfur powder, wherein as the sulfur powder, sulfur generated in a desulfurization process is used, and the sulfur generated in the desulfurization process is sulfur sludge generated in the desulfurization process using iron chelate (Fe-chelate) or sulfur-containing wastes generated in a bio-sulfur treatment process.

The utility model relates to a kind of thickening tank aerating device, including thickening pool body, the thickening pool body top is provided with operation platform, the center position of operation platform bottom is connected with feeding cylinder, the outer periphery of feeding cylinder bottom is provided with annular air pipe, air inlet is opened on the annular air pipe, the air inlet is connected with air inlet pipe, the inside of annular air pipe is spaced apart and is communicated with several spiral aeration discs, several micro air holes are evenly opened on the spiral aeration disc.The utility model is filled with gas to ore pulp uniformly by the additional aerating device, so that base metal ions (such as copper, sulfur and pyrite minerals) in ore pulp are oxidized and precipitated in advance in concentration stage, reduce the consumption of these base metal ions in subsequent leaching stage to dissolved oxygen.At the same time, it also provides sufficient oxygen contact for gold and silver, so that it is pre-leached in thickening tank, significantly prolongs leaching time, and improves the leaching rate of gold and silver.

The present invention concerns a positive electrode active material powder comprising iron disulfide, a sulfur source, a carbon source and a lithium based argyrodite compound and having a ratio A / B, wherein 0.05 < A / B < 0.40, with A representing the crystallite size of the lithium based argyrodite compound and B representing the crystallite size of iron disulfide.

The application discloses a kind of iron sulfide-phosphide catalyst for electrolysis water separation hydrogen isotope and preparation method thereof.The catalyst is with conductive carbon paper as substrate, by in-situ growth of iron oxyhydroxide precursor by hydrothermal method, then simultaneously introduce sulfur source and phosphorus source by chemical vapor deposition technology, to obtain the nano-structured catalyst with Fe-S-P active component.The catalyst not only shows excellent hydrogen evolution reaction activity in alkaline electrolyte, but also can realize efficient separation of hydrogen and deuterium by using kinetic isotope effect, with high hydrogen / deuterium separation factor.The application also provides the application of the catalyst in electrolysis water hydrogen production and hydrogen isotope separation, as well as the electrolysis separation method based on the catalyst.The application has simple process and low cost, provides efficient integrated material and process scheme for solving the green and low-cost extraction of deuterium resources.

The application discloses a soil matrix prepared based on pyrite slag, and a preparation method of the soil matrix, which comprises the following steps: mixing pyrite slag, hair and sulfuric acid together for pretreatment, wherein the weight ratio of the pyrite slag, the hair and the sulfuric acid is 5-10:0.5-2:5-10. In the process of extracting iron elements from the pyrite slag by acid leaching, the hair is added for hydrolysis to obtain hydrolyzed protein, which can well remove heavy metals in the pyrite slag by complexing with heavy metals in the pyrite slag, so that the content of the heavy metals in the pyrite slag is significantly reduced, the soil matrix prepared from the pyrite slag is suitable for plant growth, and the heavy metal pollution of the soil is reduced.

This invention discloses a manganese iron sulfide-based Prussian blue composite electrode material, its preparation method, and its application in sodium-ion batteries, belonging to the field of electrode material technology. Manganese acetate and dipotassium ethylenediaminetetraacetate are dissolved in deionized water to obtain solution A, and potassium ferrocyanide is dissolved in deionized water to obtain solution B. Solution A is added dropwise to solution B under stirring. After aging for 4-5 hours, the mixture is centrifuged, washed, and vacuum dried to obtain manganese iron sulfide-based Prussian blue (MnHCF). Sulfur powder is mixed and ground with MnHCF, and then placed in a tube furnace for vapor deposition under an inert atmosphere to obtain the manganese iron sulfide-based Prussian blue composite electrode material MnHCF-S. The addition of sulfur in this invention effectively inhibits the dissolution of manganese in MnHCF, maintains the framework stability of the sodium ion insertion / extraction process, significantly improves the redox activity and structural reversibility of the material, thereby enabling the prepared sodium-ion battery to exhibit excellent electrochemical performance.

The application relates to the technical field of non-ferrous plate processing, in particular to a cutting non-ferrous plate discoloration-resistant grinding wheel. The grinding wheel comprises the following components in parts by weight: 12-18 parts of monocrystalline corundum; 32-40 parts of white iridium plating; 10-15 parts of white corundum; 2-3 parts of iron sulfide; 10-16 parts of potassium cryolite; 0.08-0.12 parts of titanium white powder; 0.25-0.35 parts of titanium yellow; 6-8 parts of resin liquid; 11-14 parts of resin powder; 1.0-1.3 parts of silicon carbide micro powder; and 0.8-1.1 parts of polyphenylene sulfide micro powder. The grinding wheel provided by the application can reduce the frictional heat and abrasive dust adhesion during cutting, can avoid the problems of yellowing, blackening and discoloration on the surface of the plate during high-efficiency cutting, and can meet the appearance quality requirements of non-ferrous plate cutting in the fields of building decoration, high-end electronics and the like.

The application discloses a method for preparing an iron-based phosphorus sulfide array material by one-step phosphorus sulfuration and application thereof, and belongs to the technical field of humidity sensors. The application aims at solving the problems of the existing method for preparing the phosphorus sulfide iron material, i.e., the regular morphology cannot be obtained by adjusting the reactants, the synthesis method is difficult, the steps are complex, the efficiency is low, by-products are easily produced, and the synthesis raw materials are harmful to the environment. The method comprises the following steps: firstly, dissolving ferric chloride hexahydrate and anhydrous sodium sulfate in water, and immersing a carrier in the mixed solution to perform a hydrothermal reaction, so as to obtain a carrier with in-situ grown nanorod-shaped FeOOH precursors; and secondly, placing the carrier with in-situ grown nanorod-shaped FeOOH precursors and sulfur powder in one porcelain boat, placing red phosphorus in another porcelain boat, and then sequentially placing the two porcelain boats in a tube furnace for heating and heat preservation. The application is applied to the preparation of a humidity sensor.

The present invention provides a broad-spectrum scale inhibitor formulation for the petrochemical industry. The invention consists of a scale inhibitor based on sulfonated polycarboxylate mixed with saturated sodium brine with a density of 1.20 g / cm³, which effectively prevents the deposition of CaCO₃, CaSO₄, BaSO₄, iron oxide (Fe₂O₃), and other types of scale such as FeCO₃, iron sulfides (FeS, FeS₂), silica, and clays under a wide variety of operating conditions. The functions demonstrated by the invention include at least inhibiting the deposition of CaCO₃, CaSO₄, BaSO₄, iron oxide (Fe₂O₃), and other scales such as FeCO₃ and iron sulfides (FeS, FeS₂), dispersing iron oxides and silica, and exhibiting high effectiveness in sludge and clay control.Thus, the advantages of the present invention are that it is thermally stable at 200 °C, allows for the effective treatment of different types of scale with the same product, has excellent tolerance to brines with high calcium content, is biodegradable, has lower deferred production losses due to continuous cleaning, and allows for the assurance of production for a longer time, due to the preventive effects.

Provided herein are methods and systems of simultaneous oil sweetening and hydrogen production. The method includes introducing a sour oil stream containing hydrogen sulfide (H2S) from a source reservoir into a scavenging reservoir containing one or more types of reactive iron-bearing minerals, and contacting the sour oil stream with the one or more types of reactive iron-bearing minerals present in the scavenging reservoir, thereby generating a sweet oil stream having a low-reduced H2S content as compared to the sour oil stream and an iron sulfide scale deposited within the scavenging reservoir and forming a hydrogen gas cap in an upper portion of the scavenging reservoir beneath a cap rock seal.