97 results about "Hydroxyethylidene Diphosphonic Acid" patented technology

The invention relates to the technical field of precious metal recovery, in particular to a process for separating precious metal from copper-nickel smelting waste, which comprises the following steps: crushing and grading the waste, adding a sulfuric acid solution containing etidronic acid, leaching, and washing, drying and crushing filter residues to obtain a pretreated material; mixing the pretreated material with a sodium peroxide-sodium carbonate composite flux, roasting, leaching with water, and filtering to obtain a filter residue B; adding a leaching agent containing hydrochloric acid, sodium chlorate and 1, 2-cyclohexanediamine tetraacetic acid into the filter residue B according to the ratio of 1: 3-1: 5, and filtering to obtain filtrate C and filter residue C; adjusting the pH value of the filtrate C to 1.5-2.5, adding an ethanol solution of sodium N, N-diethyldithiocarbamate, precipitating, washing and calcining to obtain sponge palladium; adding ammonium chloride into the filtrate D, precipitating and calcining to obtain sponge platinum; and leaching the filter residue C by using a hydrochloric acid-chloroauric acid mixed solution containing diphenylthiourea, and replacing and calcining zinc powder to obtain crude gold. According to the process, the leaching rates of platinum, palladium and gold and the product purity are greatly improved; flux and reagent systems are optimized, consumption and energy consumption are reduced, waste liquid treatment is matched for up-to-standard discharge, and efficient resource recovery and environment-friendly cooperation are achieved.

The invention relates to the field of water treatment, and discloses a scale and corrosion inhibitor for seawater circulating cooling water, which is prepared from phosphonic acid grafted maleic anhydride-acrylic acid copolymer, hydroxyethylidene diphosphonic acid, amino trimethylene phosphonic acid, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N- The anti-corrosion coating is prepared from the following raw materials: N, N-diethylaminomethyl-benzotriazole, gamma-aminopropyltriethoxysilane, zinc salt and a polyoxyethylene-polyoxypropylene block copolymer. The core of the invention is that all the raw material components form the thermo-sensitive polyelectrolyte compound through a self-assembly process. The compound is stably dispersed at low temperature by utilizing the cloud point effect of the block copolymer, and is subjected to phase change and preferential deposition on a high-temperature heat exchange surface, so that targeted and efficient delivery of various active components is realized. According to the invention, the problems of incompatibility of components and poor stability of a traditional compound agent are solved, the product has excellent storage stability, and efficient and synergistic corrosion and scaling control can be realized under high-temperature and high-salinity working conditions.

The invention discloses a polyamide acid-resistant nanofiltration membrane and arsenic removal application thereof in hair dye preparation. According to the amide acid-resistant nanofiltration membrane, a polyamine monomer and trimesoyl chloride are subjected to an interface reaction on an ultrafiltration supporting bottom membrane, and the polyamide acid-resistant nanofiltration membrane containing the Telogen structure is obtained. According to the method for removing the arsenic in the hydroxyethyl diphosphoric acid, a polyamide acid-resistant nanofiltration membrane containing a Troger structure is adopted for at least one time of filtration treatment, the concentration of arsenate in the hydroxyethyl diphosphoric acid after secondary filtration treatment is reduced to 4.60 mg / kg from 480.02 mg / kg, and the arsenic content of the hair dye prepared from the hydroxyethyl diphosphoric acid is smaller than 0.07 mg / kg. According to the polyamide acid-resistant nanofiltration membrane containing the Troger structure, which is obtained by adopting a limited preparation method, the acid resistance is greatly improved, the separation selectivity is higher, arsenic in hydroxyethyl diphosphate can be effectively removed, and the arsenic content in a hair dye is greatly reduced.

The invention relates to the technical field of water treatment agents, and particularly discloses an anti-corrosion deoxidizing composite agent for geothermal well recharge water and a preparation method of the anti-corrosion deoxidizing composite agent. The invention relates to an anti-corrosion and deoxidizing composite agent for geothermal well recharge water. The anti-corrosion and deoxidizing composite agent comprises the following raw materials: 30-40 parts of double modified sodium sulfite, 10-20 parts of a corrosion inhibitor, 8-15 parts of a scale inhibitor, 5-10 parts of amino trimethylene phosphonic acid, 5-10 parts of etidronic acid, 3-8 parts of polyethylene glycol monomethyl ether acrylate and 40-50 parts of deionized water. The dual-modified sodium sulfite is obtained by sequentially modifying sodium sulfite with a silane coupling agent and acrylic acid. The corrosion-resistant and oxygen-removing composite agent has the advantage of being high in oxygen-removing efficiency stability, the corrosion-resistant and scale-inhibiting functions are synchronously and synergistically improved on the basis that the oxygen-removing efficiency stability is guaranteed, and the complex working condition requirements of geothermal well recharge are completely met.

The invention relates to an all-vanadium redox flow battery positive electrode electrolyte additive, a preparation method, a positive electrode electrolyte and application, and relates to the technical field of all-vanadium redox flow battery electrolytes.The all-vanadium redox flow battery positive electrode electrolyte additive comprises a main chelating agent, an auxiliary chelating agent, a pH buffering agent and a dispersing agent, the main chelating agent is selected from one or more than two of citric acid, tartaric acid, 1-hydroxyethylidene-1, 1-diphosphonic acid and trisodium methylglycine diacetate, and the auxiliary chelating agent is selected from one or more than two of disodium ethylene diamine tetraacetate, trisodium nitrilotriacetate and tetrasodium glutamate diacetate; the mass ratio of the pH buffering agent to the main chelating agent to the auxiliary chelating agent to the dispersing agent is (3.6-4.1): (0.6-1.5): (2.5-3.2): (1.7-2.5). According to the positive electrode electrolyte additive for the all-vanadium redox flow battery, the electrolyte has a remarkable high-temperature anti-precipitation effect, the energy density and the electrochemical performance are not sacrificed, and the preparation process is simple and controllable.

The invention relates to the field of photoelectrochemistry, in particular to a photo-anode based on phosphonic acid chelation and photoelectrochemistry activation and a preparation method of the photo-anode. The invention aims to provide a deep-energy-level defect dynamic passivation method based on phosphonic acid chelation and photoelectrochemical synergistic activation, which comprises the following steps: introducing 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP) molecules (ZISH) on the surface of a zinc-indium-sulfur (ZIS) photo-anode in a low-temperature water bath manner, and carrying out chelation reaction on the molecules and Zn sites on the surface in a photoelectrochemical activation manner, so as to obtain the deep-energy-level defect dynamic passivation method based on phosphonic acid chelation and photoelectrochemical synergistic activation. And a stable Zn-O-P coordination structure is formed. Under the action of photoelectric bias, the structure can reconstruct a Zn-S frame in situ, adjust the coordination number of Zn and convert a deep trap into a shallow energy level state (ZISA), so that interface recombination is effectively inhibited while a high hole injection rate is maintained.

The invention relates to the technical field of etching solutions, and discloses a molybdenum-aluminum-niobium etching solution for a TFT-LCD (Thin Film Transistor Liquid Crystal Display), which comprises the following components in percentage by mass: 50 to 60 percent of phosphoric acid, 3 to 8 percent of nitric acid, 5 to 10 percent of glacial acetic acid, 1 to 5 percent of aluminum nitrate, 0.1 to 0.5 percent of diphenyl thiourea, 1 to 5 percent of etidronic acid, 3.0 to 5.0 percent of sodium hexametaphosphate, 0.1 to 0.2 percent of fatty alcohol-polyoxyethylene ether, 0.5 to 0.8 percent of amino trimethylene phosphonic acid and the balance of ultrapure water. The invention further discloses a preparation method of the molybdenum-aluminum-niobium etching solution. According to the invention, a phosphorus nitrate vinegar system, a composite additive, a novel corrosion inhibitor, a metal ion chelating agent and a surfactant matched with the etching liquid are adopted, so that the molybdenum-aluminum-niobium multi-layer composite metal film can be simultaneously etched at one time; the etching solution has the advantages of being uniform in etching, capable of inhibiting Mo / Nb etching, high in selectivity, controllable in etching rate, free of residues, long in service life, high in stability and the like.

The application discloses an oil and gas field polymer solution viscosity protection system with improved ferrous ion tolerance, and belongs to the technical field of oil and gas field chemicals.The system comprises the following components in mass percentage: 5-10% of a ferrous ion stabilizer, 10-20% of a free radical capturing agent, 10-20% of a structure reinforcing agent, 5-10% of a synergist, and the balance of water; the ferrous ion stabilizer is at least one selected from sodium gluconate, potassium gluconate, diethylene triamine pentaacetic acid and hydroxyethylidene diphosphonic acid; the free radical capturing agent is a compound containing phenolic hydroxyl; the structure reinforcing agent is an imidazoline compound; and the synergist is an aldehyde compound.The application method of the viscosity protection system is as follows: the viscosity protection system is first added into liquid water, polymer powder is then added, a gel breaker is further added, and stirring is uniformly performed to obtain a polymer solution.The viscosity protection system significantly reduces the influence of ferrous ions on the viscosity of the polymer solution, and improves the application effect of polyacrylamide substances in the field of oil and gas fields.

The present application belongs to the technical field of cleaning products, and particularly relates to a high-temperature oil stain removing stove cleaner as well as a preparation method and application thereof. The high-temperature oil stain removing stove cleaner provided by the present application comprises the following components and mass fractions: 11-33 parts of an alkaline additive, 1-2 parts of hydroxyethylidene diphosphonic acid, 3-6 parts of a non-ionic surfactant, 4-8 parts of a solvent, 1-3 parts of a solubilizer, 1-3 parts of sodium xylene sulfonate, and 45-79 parts of water; the solvent comprises ethylene glycol monobutyl ether and diethylene glycol ethyl ether. The high-temperature oil stain removing stove cleaner provided by the present application has the advantages of simple cleaning method, high-temperature oil removing effect, good stain removing and oil scale removing effect on commercial kitchen utensils, high safety, no corrosion to metal, simple raw material composition, and no need to add a defoaming agent.

The invention belongs to the technical field of desulfurizer preparation, and particularly relates to a desulfurizer for oil extraction of oil and gas fields and a preparation method thereof. The desulfurizing agent for oil extraction of the oil and gas field is prepared from the following raw materials: N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture, ammonium molybdate, lysine sodium, hydroxyethylidene diphosphonic acid, polyoxyethylene sorbitan monostearate and the balance of water. According to the desulfurizing agent for oil extraction of the oil-gas field, water is used as a solvent, N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture and ammonium molybdate in raw materials are used as main desulfurizing components to remove organic sulfur and inorganic sulfur, and lysine sodium, hydroxyethylidene diphosphonic acid and polyoxyethylene sorbitan monostearate are added, so that the desulfurizing agent for oil extraction of the oil-gas field is obtained. Due to the synergistic effect of the raw materials, the efficient removal of inorganic sulfur and organic sulfur in oil extraction of an oil and gas field is realized.

The application discloses a layered silicate gangue inhibitor for fine-grained copper ore flotation and a preparation method thereof. The inhibitor is composed of the following components: modified polysaccharide organic polymer 15-30%, sodium hexametaphosphate 10-30%, acrylic acid 7-15%, acrylamide 1-5%, ammonium persulfate 2-5%, hydroxyethylidene diphosphonic acid 5-15%, aluminum sulfate 2-5%, and deionized water in a residual amount. The preparation method comprises the following steps: mixing modified polysaccharide and deionized water according to a mass ratio of 1:1-1:2 to prepare solution A; polymerizing acrylic acid and acrylamide to prepare solution B; mixing solution A and solution B, and adding a formula amount of sodium hexametaphosphate to react; then adding a formula amount of hydroxyethylidene diphosphonic acid and a formula amount of aluminum sulfate to carry out complex adjustment; and finally, aging, filtering and obtaining the product. The inhibitor has a strong selective inhibiting effect on talc, phlogopite and other layered silicate gangues, can significantly improve the copper concentrate grade and recovery rate, has a small dosage, is non-toxic and environment-friendly, and can be biodegraded.

The invention discloses a phosphating solution based on electric triggering and bionic template cooperative regulation and control as well as a use method and application thereof, and belongs to the technical field of phosphating solutions. The phosphating solution comprises the following components: 5-60 g / L of a phosphating precursor; 0.1 g / L to 10.0 g / L of a bionic template agent; 0.5 g / L to 20 g / L of a nanometer reinforcing phase; 7-65 g / L of a metal ion source; 0.1-3.0 g / L of an oxidizing agent; the pH regulator is used for regulating the pH value to 3.5 to 6.0; and the balance of deionized water. The phosphating precursor is one or more of phytic acid, amino trimethylene phosphonic acid and 1-hydroxyethylidene-1, 1-diphosphonic acid; when the phosphating solution is used, a workpiece is used as a cathode to apply an electric field. The phosphating solution is used for metal protection or metal drawing. A phosphating film formed by the phosphating solution based on electric triggering and bionic template cooperative regulation under the action of an electric field has excellent corrosion resistance, adhesive force and wear resistance, and sediment in the phosphating process is few.

This invention relates to the field of photoelectrochemistry, and more particularly to a photoanode based on phosphonic acid chelation and photoelectrochemical activation, and its preparation method. The purpose of this invention is to provide a method for dynamic passivation of deep-level defects based on the synergistic activation of phosphonic acid chelation and photoelectrochemical activation. 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) molecules (ZISH) are introduced onto the surface of a zinc indium sulfide (ZIS) photoanode via a low-temperature water bath. Photoelectrochemical activation is then used to induce a chelation reaction between HEDP and Zn sites on the surface, forming a stable Zn–O–P coordination structure. Under photoelectric bias, this structure can reconstruct the Zn-S framework in situ, adjusting the coordination number of Zn and converting deep traps into shallow-level states (ZISA), thereby effectively suppressing interfacial recombination while maintaining a high hole injection rate.

The application belongs to the technical field of oil exploitation, and particularly relates to an acid liquid for acid treatment of an oil layer and a preparation method thereof. The preparation method is as follows: the specific steps of the preparation method are as follows: in a reactor, piperazine-1,4-diethyl sulfonate monosodium salt, ethanol and bromoalkane are added, heated to reflux, and during the reaction, sodium hydroxide solution is used to maintain pH 7-8; 1-bromo-6-(trimethylammonium) hexyl bromide is added, heated to reflux, and during the reaction, sodium hydroxide solution is used to maintain pH 8-9; vacuum distillation is performed to obtain a viscous solid, cyclohexane recrystallization is performed to obtain a solid, and the solid is dried at 90 DEG C overnight to obtain corrosion-inhibiting acid; hydrochloric acid, hydrofluoric acid, hydroxyethylidene diphosphonic acid, corrosion-inhibiting acid and water are added to the reactor, stirred uniformly, and the acid liquid is obtained. The acid liquid has the advantages of low corrosion rate and long acidification time.

This invention discloses a nitrogen-sulfur co-doped multi-chamber carbon-supported copper nanocluster composite material and its preparation method. By integrating polyether F127, 2,6-diaminopyridine, sodium dodecylbenzenesulfonate, fulvic acid, and copper acetate (II), a semi-open and surface-fully embedded copper cluster multi-chamber carbon was successfully constructed. The surface of this multi-chamber carbon is rich in -NH2 and -SO3. ‑ With abundant active groups, it not only boasts a large specific surface area and ample adsorption sites, but also exhibits excellent anti-interference and wide pH adaptability. As an environmentally friendly material, it can simultaneously and efficiently adsorb and remove Cu²⁺ from electroplating wastewater. + Ni² + Pb² + Cd² + It contains heavy metals and organic complexing agents such as ethylenediaminetetraacetic acid (EDTA) and hydroxyethylidene diphosphonic acid (HEDDI). After electroplating wastewater treatment, it achieves convenient solid-liquid separation and recovery through centrifugation and filtration. After acid washing and alcohol washing regeneration, it exhibits excellent cycle stability. With its superior purification efficiency and recycling advantages, it has shown promising development potential in the field of electroplating wastewater treatment.

Described herein are fabric softening compositions comprising a quaternary ammonium compound (e.g., an esterquat); a cationic polyquaternium polymer (e g., polyquaternium-7); a preservative system which comprises an organic acid (e.g., lactic acid or phosphonic acid); and 3-iodo-2-propynyl butylcarbamate (IPBC) or Dodecylguanidine Hydrochloride (DGH); and a phosphonic chelating agent (e.g., etidronic acid). Methods of making and using the fabric softening compositions are also described herein.

The invention discloses a complexing inhibitor for inhibiting redissolution of heavy metal sulfide as well as a preparation method and application of the complexing inhibitor. The complexing inhibitor is prepared by compounding the following three components: a component A which is a metal salt, a component B which is an organic sulfur medicament and a component C which is an organic non-sulfur medicament, wherein the mass ratio of the component A to the component B to the component C is (1-2): (1-3): (2-6); the component A is selected from dithiocarbamate, and the component B is selected from at least one of dithiocarbamate, mercaptobenzothiazole or sodium dimethyl dithiocarbamate; and the component C is selected from at least one of chitosan, polyethyleneimine or 1-hydroxyethylidene-1, 1-diphosphonic acid. The inhibitor is especially suitable for preventing excessive sulfur ions from complexing and dissolving precipitated heavy metal sulfide in industrial wastewater treatment, and effectively controlling the concentration of heavy metal ions to rise.

The invention discloses an electroplating disqualified cadmium layer stripping solution, a preparation method and a use method, and the electroplating disqualified cadmium layer stripping solution comprises 6-8 parts of sodium phytate, 1-3 parts of sodium nitrilotriacetate, 2-4 parts of borate, 5-10 parts of sodium bromate, 1-2 parts of sodium alkyl naphthalene sulfonate, 1-2 parts of glucoside, 5-8 parts of sodium nitrate, 3-5 parts of ammonia water, 2-4 parts of triol ethylamine, 4-6 parts of 1-hydroxyethylidene-1, 1-diphosphonic acid and 8-12 parts of ammonium persulfate. The total amount of the purified water is 100 parts, and the total amount of the purified water is 100 parts. The pH value of the deplating agent solution is alkaline, the problem of hydrogen evolution of a hydrogen sensitive material is solved, the risk of hydrogen embrittlement is avoided, and hydrogen removal is not needed after steel and iron materials are deplated; cadmium ion heavy metal pollution and sewage treatment difficulty exist, the stripped cadmium ions automatically generate precipitates, recycling is facilitated, and the sewage treatment difficulty is reduced; the metal deplating liquid is convenient to use and simple to operate, only unqualified products need to be put into the deplating liquid in a room-temperature environment, after a certain time, after a plating layer is completely removed, the unqualified products are washed with water, and a metal base material is not damaged.

The invention relates to an efficient bio-based fireproof heat-insulation antibacterial coating and a preparation method and application thereof.According to the system, renewable phytic acid serves as a core functional component, the phytic acid is modified through polyethylene glycol so as to optimize the compatibility and film forming stability of the phytic acid, and the coating is endowed with lasting antibacterial performance. Piperazine and 1-hydroxyethylidene-1, 1-diphosphonic acid react to prepare piperazine 1-hydroxyethylidene-1, 1-diphosphonic acid serving as a flame-retardant component, and the piperazine 1-hydroxyethylidene-1, 1-diphosphonic acid serves as an acid source / gas source synergistic unit of the intumescent flame-retardant system to promote rapid char formation and construction of an The preparation method comprises the following steps: reacting PEG modified phytic acid with piperazine hydroxyethylidene diphosphonate, introducing aerogel and gelatin, and carrying out blending dispersion and film formation to obtain the composite coating. Wherein the aerogel constructs a high-efficiency heat insulation framework by virtue of low heat conductivity, and the gelatin provides a film forming and interface bonding effect, so that the compactness and adhesive force of the coating are further improved. The coating can simultaneously realize multifunctional synergy of flame retardance, heat insulation, bacteriostasis and mildew prevention on the surface of a base material such as wood and the like.

The invention relates to the technical field of electrochemical polishing solutions, in particular to a nickel-titanium alloy electrochemical polishing solution and a preparation method thereof.The nickel-titanium alloy electrochemical polishing solution is prepared from, by mass, 20-25 parts of sulfamic acid, 10-15 parts of citric acid, 2.5-3.5 parts of ammonium bifluoride, 0.5-1.2 parts of sodium fluoborate, 0.8-1.5 parts of molybdenum-vanadium composite passivator, 1.5-2.5 parts of 1-hydroxyethylidene-1, 1-diphosphonic acid and 0.2-0.4 part of polyaspartic acid. 0.1-0.3 part of a nonionic surfactant, 15-20 parts of a hydrophilic organic solvent and 35-45 parts of deionized water. Through the synergistic effect of the sulfamic acid-citric acid polybasic acid system and the molybdenum-vanadium composite passivating agent and the assistance of the specific non-ionic surface active agent, synchronous optimization of surface roughness and glossiness is achieved, and the corrosion resistance of the polished nickel-titanium alloy surface is remarkably improved.

The invention relates to the technical field of electrochemical energy storage materials and devices, and particularly discloses a negative electrode material and a preparation method and application thereof. The negative electrode material provided by the invention comprises the following raw material components in parts by mass: 8-10 parts of a three-dimensional heterojunction functional skeleton, 4-8 parts of an interface inducer, 1.5-2 parts of a composite precursor and 100 parts of an active substance, wherein the three-dimensional heterojunction functional framework is a carbon nano tube and tin dioxide which are combined by a covalent bond; the interface inducer comprises sodium phytate, 1-hydroxyethylidene-1, 1-diphosphonic acid and zirconium phosphate; the composite precursor is prepared from a polyvinylidene fluoride-hexafluoropropylene copolymer, silicon dioxide and perfluorinated sulfonic acid resin. The components and the preparation method of the negative electrode material are optimized, the negative electrode material is applied to the battery, the electrochemical performance and the corrosion resistance of the battery under the low-temperature condition can be obviously improved, and the hydrogen evolution potential is improved.

This invention provides a method for degreasing and whitening battery aluminum casings. The method includes the following steps: preparing a degreasing and whitening solution from powder and water; using the degreasing and whitening solution to degrease and whiten the battery aluminum casing; rinsing the degreased and whitened aluminum casing to obtain a clean battery aluminum casing. The powder is potassium pyrophosphate, and the water includes sodium hydroxyethylidene diphosphonate, surfactant, organic solvent, and deionized water. This invention combines degreasing and whitening, effectively reducing the cleaning process of battery aluminum casings and improving production efficiency. This method does not require the use of a special PVC tank; only a stainless steel tank commonly used in industrial cleaning is needed.

The invention provides a silicon dioxide and amorphous indium tin oxide selective etching solution. The silicon dioxide and amorphous indium tin oxide selective etching solution comprises an alcohol substance, a fluorine-containing substance, a corrosion inhibitor, a surfactant and the balance of water. The alcohol is one or a combination of more of ethylene glycol, polyethylene glycol, glycerol, isooctanol or isopropanol. The fluorine-containing substance is one or a combination of more of hydrofluoric acid, ammonium fluoride or ammonium bifluoride. The etching inhibitor is one or a combination of more of N, N-diisopropylethylamine, 2-hexylbenzimidazole, hydroxyethylidene-1, 1-diphosphonic acid, 5-oxo-4, 5-dihydropyrazolo [1, 5-a] pyrimidine-3-formonitrile or 5-chloro-[1, 2, 4] triazolo [1, 5-a] pyrimidine. The surfactant is one or a combination of more of polyethylene glycol mono-p-tert-octylphenyl ether, polyethylene glycol-propylene glycol monobutyl ether or coconut oil fatty acid diethanolamide. The etching solution can quickly remove a silicon dioxide deposition layer on the premise that the etching rate of amorphous indium tin oxide is smaller than or equal to 0.03 nm / min, the etched surface of silicon dioxide is smooth after etching, and etching of silicon dioxide and amorphous indium tin oxide has a high selection ratio.

The application belongs to the technical field of desulfurizer preparation, and particularly relates to a desulfurizer for oil and gas field oil production and a preparation method thereof. The desulfurizer for oil and gas field oil production comprises the following raw materials: N-octadecyl-1,3-propanediamine, an ionic liquid-organic copper mixture, ammonium molybdate, sodium lysine, hydroxyethylidene diphosphonic acid, polyoxyethylene sorbitan monostearate, and water as the balance. The desulfurizer for oil and gas field oil production uses water as a solvent, and N-octadecyl-1,3-propanediamine, the ionic liquid-organic copper mixture and ammonium molybdate in the raw materials as main desulfurization components to remove inorganic sulfur and organic sulfur, and sodium lysine, hydroxyethylidene diphosphonic acid and polyoxyethylene sorbitan monostearate are added to enhance the stability and permeability of the system, so that the raw materials synergize to achieve efficient removal of inorganic sulfur and organic sulfur in oil and gas field oil production.

This invention discloses a polishing slurry for metal surface treatment and its preparation process, relating to the field of metal polishing agent technology. The polishing slurry raw material composition includes hexagonal flake α-alumina, nano-cerium oxide, hydroxyethylidene diphosphonic acid, potassium sodium tartrate, urea peroxide, boron nitride nanosheets, polyethylene glycol, sodium tetraborate, and deionized water. The preparation process includes two-dimensional lubricant pre-dispersion, composite abrasive slurry preparation, accelerator-oxidant mixed solution preparation, and mixing and filtration steps. This invention constructs a catalytic oxidation system using nano-cerium oxide and urea peroxide, uses hydroxyethylidene diphosphonic acid and potassium sodium tartrate as a complexing agent, and uses boron nitride nanosheets as an auxiliary lubricating component. Under weakly alkaline conditions, it achieves highly efficient polishing of titanium alloys, aluminum alloys, and dissimilar metal materials, exhibiting high removal rate, good surface smoothness, balanced removal rate of dissimilar metals, and excellent storage stability.

The invention belongs to the field of building coatings. The invention provides a light gypsum foaming fireproof coating for a steel structure and a preparation method of the light gypsum foaming fireproof coating, the light gypsum foaming fireproof coating comprises the following components: gypsum powder, pentaerythritol, water, an additive composition and hydrogen peroxide, the additive composition comprises polyvinyl alcohol, cellulose ether, pentaerythritol, sodium molybdate, 1-hydroxyethylidene-1, 1-diphosphonic acid, calcium formate, sodium nitrite, potassium iodide and deionized water. The light gypsum foaming fireproof coating for the steel structure contains 99% or more of inorganic materials, is low in density and high in bonding strength with the steel structure, improves the anti-corrosion effect on the steel structure, performs effective fireproof and heat-insulating protection on the steel structure, is green, harmless and environment-friendly, can tolerate the high temperature of 1700 DEG C, has the fireproof grade of A1 grade, is an A1 grade non-combustible substance, remarkably reduces the heat conductivity coefficient, and is suitable for large-scale popularization and application. The effects of fire insulation and flame retardance are effectively achieved.

A low-cost, neutral aqueous organic iron-cerium flow battery belongs to the field of electrochemical energy storage. Both the positive and negative electrolytes utilize aqueous organophosphorus ligands chelated with metals. The organophosphorus ligands are selected from one or more of the following: 2-hydroxyphosphonoacetic acid, hydroxyethylidene diphosphonic acid, diethylenetriaminepentamethylidene phosphonic acid, 2-phosphonobutane-1,2,4-tricarboxylic acid, polyol phosphate, hexamethylenediaminetetramethylidene phosphonic acid, polyaminopolyethermethyleneidene phosphonic acid, bis(1,6-hexylenetriaminepentamethylidene phosphonic acid), and their lithium, sodium, potassium, and ammonium salt derivatives. A supporting electrolyte is also included to adjust and stabilize the pH environment of the electrolyte. This invention achieves high conductivity and stable performance without the need for additional auxiliary electrolytes, opening up new possibilities for the development and application of flow battery technology. It features stable performance, low cost, widely available raw materials, and environmental friendliness, making it suitable for automotive power supplies, residential energy storage, backup power supplies, and large-scale energy storage devices.

The invention discloses an environment-friendly silicon material surface cleaning reagent and a preparation method thereof, the environment-friendly silicon material surface cleaning reagent comprises hydrofluoric acid, citric acid, EDTA tetrasodium, 1-hydroxyethylidene-1, 1-diphosphonic acid and pure water, and the environment-friendly silicon material surface cleaning reagent is characterized in that the citric acid accounts for 20-25%, the hydrofluoric acid accounts for 4-5%, the EDTA tetrasodium accounts for 0.5-1%, the 1-hydroxyethylidene-1, 1-diphosphonic acid accounts for 0.5-1%, and the pure water accounts for 0.5-1%. The proportion of the hydroxyethylidene diphosphonic acid is 0.5%-1%, the proportion of the pure water is 70%-73%, the chemical formula of the hydrofluoric acid is HF, the chemical formula of the citric acid is C6H8O7, the chemical formula of the EDTA tetrasodium is C10H12N2Na4O8, the chemical formula of the hydroxyethylidene diphosphonic acid is C2H8O7P2, and the chemical formula of the pure water is H2O. According to the environment-friendly silicon material surface cleaning reagent and the preparation method thereof, citric acid is used as a main material, HF and the chelating agent are matched, metal pollutants and surface oxides in a silicon material are removed, meanwhile, the reagent does not contain substances which chemically react with the silicon material, raw material loss is effectively avoided, and the raw material utilization rate is increased.

The invention provides an environment-friendly alkaline scale inhibitor suitable for harsh water quality. The environment-friendly alkaline scale inhibitor is characterized by comprising the following raw materials in percentage by mass: a main scale inhibitor: 15-18% of modified polyaspartic acid (molecular weight of 3000-5000); an auxiliary scale inhibitor: 5%-8% of disodium 1-hydroxyethylidene-1, 1-diphosphonate; a chelating synergist: 8%-10% of L-glutamic acid tetrasodium diacetate; a dispersion synergist: 2%-3% of nano silicon dioxide (20-50nm spherical particles); an alkaline stabilizer: 3%-5% of triethanolamine; a synergistic auxiliary agent: 4%-6% of sodium citrate; and the balance of deionized water. The innovative thought of the scale and corrosion inhibitor is developed mainly around selection of bio-based materials, reasonable matching of low-phosphorus components and the synergistic effect of nano materials, and efficient balance of scale inhibition and corrosion inhibition is expected to be achieved in complex environments of common water treatment systems such as a nanofiltration membrane system, a reverse osmosis membrane system and a circulating water system.

The invention discloses an environment-friendly scale inhibitor of calcareous collophanite and a preparation method and application of the environment-friendly scale inhibitor, coal gangue, carbide slag and ardealite are used as main raw materials, a sodium aluminate solution (Al2O3 is greater than or equal to 15%) is prepared through gradient temperature reaction, then the sodium aluminate solution is used as a main component, glucaric acid, polyepoxysuccinic acid, phosphatized ZIF-8 and hydroxyethylidene diphosphonic acid are compounded, and the scale inhibitor of calcareous collophanite is prepared. The environment-friendly scale inhibitor is prepared; the environment-friendly scale inhibitor can be used in the whole technological process of calcium collophanite sulfuric acid method single reverse flotation, the dosage is only 200-400 g / t (based on raw ore dry ore), the dosage is small, and the scale inhibition effect is good. According to the method, sodium aluminate is hydrated to form a surface passivation film to inhibit crystal nucleus adhesion, ZIF-8 is phosphatized to inhibit silicon in a targeted mode, glucaric acid is synergistically chelated with metal ions and the like, the operation cycle of a flotation system is effectively prolonged, meanwhile, the equipment and pipeline maintenance cost is reduced, and solid waste recycling and operation cost reduction are achieved.