51 results about "Inorganic phosphate" patented technology

The invention provides an electrolyte additive for synergistically regulating and controlling activity and stability of an all-vanadium redox flow battery and application of the electrolyte additive, the electrolyte additive is a composite additive of an organic amino acid compound and inorganic phosphate, the organic amino acid compound is one of aspartic acid, glycine and cysteine, and the inorganic phosphate is one of amino acid, glycine and cysteine. The inorganic phosphate is one or two or more of phosphate, dihydric phosphate, dihydric phosphate, polyphosphate and pyrophosphate, and cations of the inorganic phosphate are one or two or more of potassium, sodium and ammonium salt. The composite additive is used as an electrolyte additive to be added into an all-vanadium redox flow battery electrolyte, so that the vanadium electrolyte can be effectively prevented from generating precipitates at high temperature, the capacity fading in the battery operation process is avoided, and the stable operation of the battery is realized. The preparation process is simple to operate, energy-saving, environment-friendly and low in cost, and stable operation of the electrolyte in the battery can be realized.

The present compositions and methods relate to thermostabilization of phytase with phosphate and increasing the recovery of phytase during the production of heat-treated food or animal feed pellets that contain phytase.

The invention relates to the technical field of detection, in particular to a method for detecting inorganic phosphate ions. In the method, the concentration of the inorganic phosphate ions in the to-be-detected liquid is calculated according to the instantaneous corrosion potential of the iron electrode, the second-level response of inorganic phosphate ion detection can be realized, and the method has the characteristics of rapid detection and real-time online monitoring. According to the method, disordered spontaneous corrosion is not passively observed, but an ideal reaction interface is actively and periodically constructed, and an uncontrollable corrosion process is converted into a stable and reliable analysis signal.

The invention provides a phosphorus release improving type compound fertilizer based on a fungal extracellular polymer, a preparation method and application, and belongs to the technical field of microorganisms, the phosphorus release improving type compound fertilizer is prepared by compounding the extracellular polymer generated by specific rhodotorula mucilaginosa WTSX01 and inorganic phosphate according to the mass ratio of 1: 9; the preparation method comprises the following steps: extracting and purifying high-activity EPS from a strain fermentation broth by a low-temperature dialysis method, separating lipid from EPS as a natural adhesive by a cosolvent extraction method, and finally mixing EPS, lipid and inorganic phosphate. The invention also discloses a synergistic application of the fertilizer and a phosphorus-solubilizing fungus aspergillus niger (CCTCC No. M2023240), so that the release efficiency of phosphorus in soil is improved; the fertilizer provided by the invention provides exclusive nutrition for phosphate-solubilizing microorganisms, effectively overcomes indigenous microorganism competition, remarkably promotes microorganism growth and phosphorus release, and realizes reduction and synergism of phosphate fertilizer and yield increase of crops.

An improved Battery Electric Vehicle heat transfer fluids is made diluting a heat transfer fluid concentrate comprising greater than or equal to 85 weight percent of a freezing point depressant; 20 to 80 ppm of calcium ions; an azole compound; 100 to 250 ppm of an inorganic phosphate; and a polyelectrolyte polymer dispersant, wherein the heat transfer fluid concentrate has a pH of 7 to 9.0 and the weight ratio of polyelectrolyte polymer dispersant to calcium ions is 1 to 3 and the weight ratio of inorganic phosphate to calcium is 2 to 4. For use this concentrate is preferably diluted with deionized water usually 50 / 50. The addition of N-methyl-imidazole provides protection against vapor phase corrosion particularly for ferrous metals.

The invention discloses a tinned steel plate with a chromium-free surface, which comprises a substrate and a tinned layer plated on the surface of the substrate, and the surface of the tinned layer is provided with a passive film; the passivation film contains the following effective elements: Ti with a content of 0.5-6 mg / m < 2 >; the total content of at least one of Mn, Zn and Mo is 1-8 mg / m < 2 >; p having a content of 0.5 to 5 mg / m < 2 >; the content of Si is 0.01 to 0.5 mg / m < 2 >. The invention further discloses a manufacturing method of the tin-plated steel plate. The manufacturing method comprises the following steps: electroplating tin on the surface of the substrate; carrying out tinned layer soft fusion alloying treatment on the tinned steel plate; carrying out electrolytic pretreatment; passivating treatment is conducted, specifically, the surface of the tin-plated steel plate is evenly coated with a chromium-free passivating solution in a dipping and / or spraying mode, and then drying is conducted; wherein the chromium-free passivation solution contains at least one of water-soluble salt of titanium, water-soluble salt of manganese, zinc and molybdenum, inorganic phosphate, silicon-containing oligomer and / or modified silica sol.

This document describes poultry diets containing phytase polypeptides or fragments thereof, in which the diet contains no or practically no inorganic phosphate.

The application provides a binder, a wide-temperature-range high-temperature lubricating coating and a preparation method, a coating and a coating method thereof. The preparation method of the wide-temperature-range high-temperature lubricating coating comprises the following steps: proportionally adding aminated boron nitride, low-melting-point glass powder, aluminum pigment and anti-wear pigment filler into a crushing device, adding water, crushing and grinding for 12-48 hours to obtain a slurry; adding an aqueous phase dispersion solution of the binder into the slurry, adding water, stirring and mixing, and pre-mixing the coating; and stirring and dispersing the pre-mixed coating to obtain a finished wide-temperature-range high-temperature lubricating coating. The coating adopts boron oxide and fumed silica modified inorganic phosphate resin as the binder, aminated modified hexagonal boron nitride as the main lubricating and anticorrosive filler, low-melting-point glass powder and aluminum pigment as the anticorrosive toughening agent, and other functional fillers and additives, and the coating obtained through high-temperature curing can be used in a wide-temperature-range and has a lower wear rate.

The utility model discloses a fish, mushroom and vegetable symbiotic system, including fishpond, soilless culture box and microbiological treatment component, the bottom of fishpond is provided with waste water discharge port, microbiological treatment component includes aerobic treatment unit and anoxic treatment unit, aerobic treatment unit includes aerobic treatment box, the liquid inlet of aerobic treatment box is communicated with waste water discharge port, and the liquid outlet of aerobic treatment box is communicated with anoxic treatment unit. When the wastewater is discharged into the aerobic treatment box, nitrifying bacteria in an aerobic state convert ammonia nitrogen into nitrate which can be absorbed by plants, and phosphorus-accumulating bacteria uptake phosphorus-containing pollutants in the wastewater and form flocculent sludge; the anoxic treatment unit comprises an anoxic treatment box, a liquid inlet in the anoxic treatment box is communicated with a liquid outlet in the aerobic treatment unit through a first connecting pipe, a filter plate is further arranged in the anoxic treatment unit, after flocculent sludge enters the anoxic treatment box, phosphorus-accumulating bacteria release inorganic phosphate which can be absorbed by plants in an anaerobic state, and the flocculent sludge enters the aerobic treatment box; nitrate and inorganic phosphate penetrate through the filter plate and then enter the soilless culture box.

The present application belongs to the technical field of luminescent materials, and particularly relates to a photoluminescent flexible film and a preparation method and application thereof, the preparation method comprising the following steps: taking compounds corresponding to elements contained in a chemical formula of inorganic phosphate, mixing the compounds according to stoichiometric ratios corresponding to the chemical formula to obtain a mixture; dissolving phenolic aldehyde resin in ethanol, then uniformly mixing the phenolic aldehyde resin with the mixture, drying and solidifying; pre-burning under a protective atmosphere; then heating and calcining in an oxygen-containing atmosphere to obtain a photoluminescent material, loading the material on modified vulcanized silicon rubber to obtain a flexible film. The photoluminescent material and the flexible film prepared based on the material exhibit excellent linear response (R 2 =0.9897) in a high dose range (>200 Gy), information storage stability is more than 50 days, and has good reversible cyclic use performance.

The invention discloses a compound, polydicyclopentadiene resin and a preparation method thereof, and the preparation method of the polydicyclopentadiene resin comprises the following steps: mixing dicyclopentadiene, a regulator, a Grubbs catalyst and a compound of formula (I), and reacting at a first temperature to obtain a product. The preparation method comprises the following steps: mixing a compound shown as a formula (I) with DCPD, a Grubbs catalyst and a regulator to form a composition, and controlling a polymerization process to prepare a material which has excellent mechanical strength and can be controllably degraded under the conditions of acid or alkali and the like. The phosphate group contained in the hydrogel can generate inorganic phosphate after being hydrolyzed, the hydrogel has good biocompatibility, pollution which cannot be degraded by traditional cross-linked macromolecules can be relieved, and degradation products still have good environment-friendly properties.

The invention relates to the technical field of composite materials, and discloses a phosphate-melamine composite coating wall material which comprises an inner phosphate coating layer and an outer melamine coating layer, the inner-layer phosphate coating layer is composed of at least one of ammonium dihydrogen phosphate and zinc phosphate, the inner-layer phosphate coating layer is combined with the surfaces of the coated particles, and the thickness of the inner-layer phosphate coating layer is 0.5-5 [mu] m; the outer melamine coating layer is a continuous compact organic film and coats the outer surface of the inner phosphate coating layer, and the thickness of the outer melamine coating layer is 1-10 microns. By designing a specific double-layer composite structure of a phosphate inner layer and a melamine outer layer, the high temperature resistance and flame retardance of an inorganic phosphate framework and the compact water resistance and high toughness of an organic melamine resin film are ingeniously combined, and the problem of functional limitation of a single wall material is successfully solved; and the wall material has excellent high temperature resistance, water resistance and impact resistance at the same time.

The application discloses a kind of water-based optical discoloration pigments and water-based anti-fake inks, the water-based optical discoloration pigment includes: multilayer alternately stacked reflective layer and dielectric layer group composition optical variable pigment, and sequentially cover inorganic phosphate ester passivation layer and silicon dioxide protective layer on the surface of the optical variable pigment.The water-based optical discoloration pigment and water-based anti-fake ink provided by the application, by special surface treatment to optical variable pigment, on the one hand, reduce or inhibit the oxidation and corrosion of optical variable pigment, optical variable pigment is in the protected state, can retain the discoloration effect to the greatest extent, on the other hand, improve the storage stability of optical variable pigment in water-based ink system, and using special resin and additive system, obtain a kind of water-based anti-fake ink of optical variable that is comparable to oil system effect.

Disclosed in the present invention is a tinplate having a chromium-free surface, comprising a substrate and a tin plating plated on the surface of the substrate. The surface of the tin plating has a passivation film. The passivation film contains the following effective elements: 0.5-6 mg / m2 of Ti; at least one of Mn, Zn, and Mo having a total amount of 1-8 mg / m2 ; 0.5-5 mg / m2 of P; and 0.01-0.5 mg / m2 of Si. Further disclosed in the present invention is a method for manufacturing the tinplate, comprising the steps of: electroplating tin on the surface of a substrate; subjecting the tinplate to a tin plating reflow alloying treatment; performing electrolysis pretreatment; and passivation treatment: uniformly applying a chromium-free passivation solution to the surface of the tinplate by means of immersion and / or spraying, and then drying, wherein the chromium-free passivation solution contains: a water-soluble salt of titanium, at least one of water-soluble salts of manganese, zinc and molybdenum, an inorganic phosphate, a silicon-containing oligomer, and / or a modified silica sol.

The application discloses a wide-temperature-range self-lubricating inorganic phosphate-based adhesive coating and a preparation method and application thereof, and relates to the technical field of wide-temperature-range lubricating coating. The adhesive coating raw material comprises an aluminum phosphate adhesive and a filler; the filler comprises graphite nanosheets, chromium oxide-doped molybdenum disulfide and mullite whiskers. The aluminum phosphate / oxidized chromium-doped molybdenum disulfide / graphite nanosheet / mullite composite lubricating coating is prepared by adopting the air spraying method with the aluminum phosphate adhesive as a matrix and the graphite nanosheets, the chromium oxide-doped molybdenum disulfide and the mullite whiskers as fillers, and can be applied to the lubrication and protection of key moving parts in aerospace.

This invention discloses a cerium-iron-nitrogen-doped carbon nanozyme, its preparation method, and its applications, belonging to the field of environmental pollutant detection technology. The cerium-iron-nitrogen-doped carbon nanozyme disclosed in this invention is composed of a two-dimensional planar iron-nitrogen-carbon support and a surface-loaded hexanuclear cerium cluster catalytic center. This cerium-iron-nitrogen-doped carbon nanozyme possesses advantages such as structural stability, well-defined and diverse catalytic activities, and strong specificity for target analytes. It can efficiently catalyze the characteristic reactions of organophosphorus pesticides by mimicking the activities of various natural enzymes, achieving rapid and highly sensitive detection of these pesticides and efficiently degrading and recovering inorganic phosphates from organophosphorus pesticide residues.

The application discloses a lubricating coating for high-temperature fasteners and a preparation method and application thereof. The lubricating coating is prepared by using inorganic phosphate as a binder, nano boron nitride, silver powder, molybdenum disulfide and tungsten disulfide as composite lubricants, antimony trioxide as an antioxidant, nano silicon dioxide as a phosphate binder reinforcing agent, water and anhydrous ethanol as a dispersion medium, and propargyl alcohol as a corrosion inhibitor. The coating is immersed or sprayed on the fastener, and a coating is formed after a certain curing condition. The coating has good adhesion, flexibility and impact resistance, and has no corrosion defects such as pitting, cracking and bubbling after an acetate salt spray test (AASS) for 240 hours. According to the locking torque test in accordance with HB 7687-2001, the locking torque requirement is met after 15 cycles at room temperature and 5 times of warm loading and then air cooling to room temperature. The application has a good application prospect in the field of high-temperature fastener coatings.

A method for multi-stage classification and recovery of rare earth elements (REEs) includes the steps of: using humic acid (HA), iron (hydr) oxides and inorganic phosphate to perform multi-stage classification and recovery of a full suite of REE solution, and obtaining a solution rich in light rare earth elements (LREEs), a solution rich in middle rare earth elements (MREEs) and a solution rich in heavy rare earth elements (HREEs).

The invention relates to the technical field of high-temperature-corrosion-resistant protective coatings, in particular to an organic silicon-phosphate interpenetrating network coating as well as a preparation method and a spraying method thereof. The coating comprises the following components in parts by mass: a component A, namely an organic silicon prepolymer, a component B, namely a modified rare earth-functional filler, a component C, namely an inorganic phosphate solution and a component D, namely a water-based curing accelerator, wherein the mass ratio of A to B to C is (30-40): (40-50): (10-20), and D is 1% of the total mass of A, B and C. A flexible organic silicon network and a rigid phosphate network are interpenetrated in a molecular scale to form a Si-O-P-Al-M (M is rare earth, Mg and Zn) hybrid skeleton; meanwhile, rare earth oxide / silicate is introduced to serve as a high-temperature self-healing pinning phase, and rare earth oxygen vacancies are utilized to migrate at high temperature to seal and fill microcracks; a sol-gel and secondary curing process is adopted, three-step gradient curing of normal-temperature condensation, medium-temperature organic crosslinking and high-temperature inorganic ceramization is achieved, and thermal stress is relieved.

The invention provides a recycling method for activating organic phosphorus in electroplating wastewater into inorganic phosphate by utilizing Cu (II) in copper-based electroplating wastewater to activate agricultural waste apricot shell biochar modified graphite felt (GF) cathodic oxidation, which comprises the following steps of: taking modified graphite felt as a cathode material, taking a ruthenium iridium / iridium tantalum electrode as an anode material, and taking Cu (II) as a cathode material; the method comprises the following steps: respectively placing a cathode material and an anode material in a wastewater solution containing organophosphorus hydroxyethylidene-1, 1-diphosphonic acid and Cu (II) to obtain a reaction solution; and placing the reaction solution under a certain temperature condition to carry out electro-catalytic reaction. According to the method, recycling of the organic phosphorus is achieved through cooperation of Cu (II) pollutants in the copper-based electroplating wastewater and the biological carbon cathode, the organic phosphorus oxidation process is low in consumption and efficient, and the conversion rate can reach up to 94%. The electro-catalysis method provided by the invention is a low-cost, green and recycling treatment method.

This invention provides a permeability-enhancing agent with excellent antifoaming properties and a treatment agent for nonwoven fabric manufacturing. The permeability-enhancing agent comprises compounds (A) and (B), and includes at least one selected from compounds (C), (D), and inorganic phosphate (IN). The acid value of the non-volatile component of the above-mentioned permeability-enhancing agent is 0.5~450 mgKOH / g, and the ratio of the peak areas [P1 / (P1+P2+P3)] obtained by determining the non-volatile component of the above-mentioned permeability-enhancing agent using nuclear NMR is 40%~100%. The nonwoven fabric manufacturing treatment agent comprises compound (A) and compound (B), and contains at least one selected from compound (C), compound (D), and inorganic phosphate (IN). The non-volatile component of the nonwoven fabric manufacturing treatment agent has an acid value of 0.5 to 450 mg KOH / g, and the ratio of the peak areas [P1 / (P1+P2+P3)] obtained by determining the non-volatile component of the permeability imparting agent by P-nuclear NMR is 40% to 100%.

The application discloses a method for preparing 2'-methoxy-uridine triphosphate, which comprises the following steps: taking 2'-methoxy-uridine acid as a substrate, taking adenosine triphosphate as an initial phosphate donor, constructing a phosphate circulation system, adding an enzyme catalyst, and adopting one-pot enzyme method to perform enzyme catalysis reaction, so as to obtain the end product 2'-methoxy-uridine triphosphate. The phosphate circulation system is composed of adenosine triphosphate, adenosine diphosphate and phosphate compounds. The enzyme catalyst catalyzes the dephosphorylation of the phosphate compounds to provide inorganic phosphate to the adenosine diphosphate, and the adenosine triphosphate is regenerated to realize the circulation energy supply. The method adopts high-activity enzyme combination of specific sources, has high conversion rate of the substrate 2'-methoxy-uridine acid, and has high conversion rate of the final 2'-methoxy-uridine triphosphate up to 92.6%, and has the advantages of high synthesis efficiency, simple steps, green environmental protection and controllable cost.

The invention discloses a method for visually detecting various phosphates, which comprises the following steps: firstly, synthesizing three MOF (Metal Organic Framework) nano-enzymes, namely PCN-222 (Fe), PCN-223 (Fe) and PCN-224 (Fe) with peroxidase-like activity, catalyzing a colorless substrate 3, 3 ', 5, 5'-tetramethyl benzidine (TMB) into oxTMB in a blue oxidation state by the three MOF nano-enzymes in the presence of H2O2, and generating remarkable colorimetric response; then, the five phosphates, namely ATP (adenosine triphosphate), ADP (adenosine diphosphate), AMP (adenosine monophosphate), PPi (pyrophosphoric acid) and Pi (inorganic phosphate), are simultaneously distinguished and detected by utilizing the principle that different phosphates have different regulation degrees on the peroxidase-like activity of the MOF nano-enzyme. In combination with a smartphone application program 'ColorMax', real-time visual analysis of phosphate is realized, and an efficient and convenient method is provided for distinguishing and detecting different phosphates.

The invention relates to the field of water treatment, and particularly discloses a CaAlNd ternary layered double hydroxide composite adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, preparing a mixed solution: dissolving a calcium salt, an aluminum salt and a neodymium salt in water to obtain the mixed solution containing Ca < 2 + >, Al < 3 + > and Nd < 3 + > for later use, and taking a sodium hydroxide solution as an alkali solution for later use; s2, coprecipitation: simultaneously dispersing the mixed solution obtained in the S1 and an alkaline solution in water, and stirring in an alkaline environment to obtain a product solution; s3, crystallization and post-treatment: carrying out heating crystallization treatment on the product solution obtained in S2 for 16-20 hours, washing and drying to obtain the CaAlNd ternary layered double hydroxide composite adsorbent which has good adsorption capacity, pH adaptability, renewability and stability to inorganic phosphate and organic phosphonic acid, and can be used for preparing the composite adsorbent. The increasingly strict phosphorus emission standard and the treatment requirement of complex water quality can be met.

According to the preparation method, chromium-aluminum phosphate is used as a binder, graphene oxide is used as a modified material, superfine chrome green, magnesium oxide, zinc oxide, zinc powder, alpha-alumina micro powder, mica powder, talcum powder and the like are used as fillers, and the inorganic salt fireproof anticorrosive coating is prepared under the cooperation of a plurality of functional assistants. And preparing the inorganic phosphate fireproof anti-corrosion coating. The coating is used for coating protection on metal and alloy surfaces in a high-temperature environment, and the corrosion resistance and oxidation resistance of the metal surfaces can be remarkably improved. When the coating is used for protecting metal and alloy-based engines, exhaust pipes, incinerators and the like, the service life of the metal and alloy-based engines, the exhaust pipes, the incinerators and

Oral nicotine pouch compositions comprising nicotine, water in an amount of at least 5% by weight of the pouch composition, an alginate, an inorganic divalent cation, and at least one pH adjusting agent comprising an inorganic phosphate are disclosed. Oral nicotine pouch compositions and pouch products comprising inorganic multivalent cations are also disclosed.

The present invention addresses the problem of providing: a nonwoven fabric treatment agent which is for imparting water repellency, which enables an improvement in emulsion stability, and which enables an improved wettability of the nonwoven fabric treatment agent with respect to fibers; and fibers which use the same. A nonwoven fabric treatment agent according to the present invention comprises a specific phosphate compound and a C3-6 monovalent to trivalent alcohol. In the nonwoven fabric treatment agent, when the total of P NMR integration ratios respectively attributed to specific phosphate esters Pa, Pb, Pc, and Pd and an inorganic phosphate is represented as 100%, the P NMR integration ratio attributed to the inorganic phosphate is not more than 55%, and the P NMR integration ratio attributed to the phosphate ester Pa is not less than 5%. The ratio NPi / NPa of the P NMR integration values NPa, NPi attributed to the phosphate ester Pa and the inorganic phosphate is not less than 0.6. The nonwoven fabric treatment agent has an acid value of 0.5-100 mgKOH / g.

Disclosed is an oral nicotine pouch composition comprising nicotine, water in an amount of at least 5% by weight of the pouch composition, alginate, inorganic divalent cations, and at least one pH regulating agent comprising inorganic phosphate. Also disclosed is an oral nicotine pouch composition comprising inorganic multivalent cations and a pouched product.

The invention relates to a self-repairing microcapsule which is characterized by being prepared by the following steps: (1) stirring and mixing melamine, formaldehyde and deionized water, and carrying out addition reaction under an alkaline condition to form a water-soluble transparent prepolymer A; (2) dissolving diethyl aluminum hypophosphite and lauryl sodium sulfate in deionized water, adding organosilane and toluene, emulsifying to form a stable emulsion B, slowly pushing the emulsion B into the prepolymer A to obtain a polymerization solution, and completing polycondensation coating; and washing to remove the excessive prepolymer A, and drying to obtain the self-repairing microcapsule. The self-repairing microcapsule synthesized in the invention is biodegradable, green and environment-friendly, conforms to the current thought of green development, and can also be used as a repairing agent for other porous materials. According to the inorganic phosphate coating disclosed by the invention, the self-repairing microcapsules and the passivated aluminum particles are added into the phosphate coating, so that an effect of physically resisting a corrosive medium can be achieved.

The invention relates to thermophilic inorganic pyrophosphatase as well as a preparation method and application thereof. Specifically, the present invention provides a method of hydrolyzing an inorganic pyrophosphate and producing a phosphate comprising the steps of: (a) subjecting the inorganic pyrophosphate to an enzymatic hydrolysis reaction in the presence of a thermophilic inorganic pyrophosphatase, thereby forming a product inorganic phosphate; wherein the substrate comprises an inorganic pyrophosphate; the thermophilic inorganic pyrophosphatase is derived from streptococcus thermophilus. The inorganic pyrophosphatase provided by the invention has high enzymatic activity and good thermal stability, the hydrolysis rate of pyrophosphoric acid is remarkably improved, and the inorganic pyrophosphatase shows remarkable application potential in the aspects of improving in-vitro transcription efficiency and PCR amplification efficiency.