16 results about "Aluminium phosphate" patented technology

The invention provides a self-repairing hydrated salt phase change microcapsule as well as a preparation method and application thereof, and belongs to the field of phase change materials. The preparation method comprises the following steps: preparing a hydrated salt phase change material and sorbitol into eutectic melt by adopting a melting method; strontium carbonate, sorbitol grafted nano titanium dioxide, SiO2-coated silicone rubber microspheres, hollow Al2O3 microspheres, tannic acid microcapsules, alpha-zirconium phosphate, melamine polyphosphate, diethyl aluminum hypophosphite, carboxylated multi-walled carbon nanotubes, polydopamine modified boron nitride nanosheets and hydrophilic fumed silica are added into the eutectic melt, and blending is performed to obtain a core material; The preparation method comprises the following steps: adding strontium carbonate, sorbitol grafted nano titanium dioxide, SiO2-coated silicone rubber microspheres, hollow Al2O3 microspheres, tannic acid microcapsules, alpha-zirconium phosphate, melamine polyphosphate, diethyl aluminum hypophosphite, carboxylated multi-walled carbon nanotubes, polydopamine modified boron nitride nanosheets and hydrophilic fumed silica into the eutectic melt; bio-based polyurethane-polyurea is used as a shell material, the core material is coated in the shell to prepare the microcapsule, and the temperature of the coating operation is not higher than the phase change temperature of the hydrated salt phase change material; the surface is coated with a super-hydrophobic coating. According to the invention, a solid filler system is constructed, and a low-temperature preparation process is combined, so that the phase-change microcapsule with high performance, high reliability and high safety is developed.

The invention discloses a method for improving phosphorite reaction activity and fluorine resource recovery rate. The method mainly aims at medium-low-grade collophanite after flotation, and comprises the following steps: firstly, pretreating phosphorite by using fluosilicic acid to prepare high-concentration phosphorite slurry; carrying out premixing reaction on the phosphoric ore pulp and phosphoric acid, and then carrying out crystallization reaction with sulfuric acid with a certain concentration; a flash cooling and flue gas washing system is arranged in each reaction area, so that escape and recovery of fluorine are enhanced; and after the reaction is finished, filtering and washing to obtain phosphoric acid and phosphogypsum. The phosphorite is pretreated by using low-concentration fluosilicic acid recovered in a phosphoric acid concentration section, the phosphorite pre-decomposition pH is adjusted by using fluosilicic acid, carbonate, silicate and quartz impurities in the phosphorite are preferentially dissolved, and micro-channels are formed on the surfaces of phosphorite particles, so that the subsequent use amounts of phosphoric acid and sulfuric acid are reduced, and the content of aluminum phosphate ions in the product is reduced; the phosphorite acidolysis efficiency is improved. Meanwhile, introduction of fluosilicate accelerates escape of fluorine in phosphorite, and the fluorine yield of the system is increased.

The present application provides a kind of hydroxyl dehydrogenation preparation aldehyde or ketone dehydrogenation catalyst and its preparation method.The present application reduces the acidity of catalyst by introducing Li adjuvant, reduces the generation of by-product heavy oil.By reacting Li with silicon source to generate lithium silicate, Li is fixed, and by adding condensed aluminum phosphate to fix lithium silicate, the loss of lithium silicate is inhibited.By using water vapor hydrothermal treatment of catalyst at different temperatures, the pore of catalyst can be effectively enlarged, the mass transfer effect in the reaction process is improved, and the catalyst can have better dehydrogenation activity at low temperature.The catalyst prepared by the method described in the present application can achieve high activity at a lower temperature, the production of by-products is inhibited by adding alkaline adjuvant, and the alkaline adjuvant is effectively immobilized by adding solidifying agent, to improve the operating stability of the catalyst.

The invention provides a super-long-cycle energy storage semi-solid battery and a preparation method thereof. The energy storage semi-solid battery comprises a positive plate, a diaphragm, a gel electrolyte and a negative plate, the positive plate comprises a current collector, a lithium-rich positive active layer and a coating which are stacked in sequence, and the material of the coating comprises lithium titanium aluminum phosphate, a first binder and aluminum oxide; the gel electrolyte is obtained by polymerizing a gel electrolyte composition, and the gel electrolyte composition comprises a lithium salt, an organic solvent, vinylene carbonate, fluoroethylene carbonate, polystyrene, 1, 3-dioxolame and an initiator. The energy-storage semi-solid-state battery has excellent cycle performance, can normally operate at-20 DEG C, and is particularly suitable for being used in cold regions.

The invention discloses a sulfur-resistant CO oxidation catalyst and a preparation method thereof. The catalyst is composed of a date-pit-shaped polycrystal phosphate nanofiber carrier and a noble metal active component loaded on the crystal face at the end of a date pit, the date-pit-shaped polycrystal phosphate nanofiber carrier is formed by one or more of hydroxyl calcium phosphate, iron phosphate or aluminum phosphate, and the noble metal active component is at least one of Pt, Pd, Au and Ru. The preparation method comprises the following steps: in the presence of a polyol surfactant, carrying out periodic oscillation crystallization-segmented calcination to obtain a date-pit-shaped polycrystalline carrier, and directionally anchoring the noble metal on the crystal face at the end part of the carrier through ion exchange. The catalyst prepared by the invention shows excellent CO oxidation activity, sulfur poisoning resistance and long-term stability in sulfur-containing industrial flue gas such as steel sintering flue gas, and is suitable for working conditions of 200-350 DEG C and containing pollutants such as SO2.

The invention relates to the technical field of high polymer materials, in particular to a halogen-free flame-retardant reinforced PET alloy material as well as a preparation method and application thereof. The halogen-free flame-retardant reinforced PET alloy material is prepared from the following components in percentage by mass: 60 to 80 percent of PET polyester, 1 to 55 percent of glass fiber, 1 to 40 percent of other resin, 10 to 20 percent of diethyl aluminum hypophosphite, 0.4 to 4.9 percent of cross-linking agent, 1 to 5 percent of composite intermediate product and the balance of catalyst, the preparation method of the halogen-free flame-retardant reinforced PET alloy material comprises the following steps: S1, mixing nano calcium carbonate and graphene according to a mass ratio of (3-5): 1, adding a silane coupling agent accounting for 2-5% of the total mass of the nano calcium carbonate and the graphene, and mixing at 80-100 DEG C for 15-30 minutes to obtain the composite intermediate product; and S2, uniformly mixing PET polyester, other resins, diethyl aluminum hypophosphite, a cross-linking agent, a catalyst and the composite intermediate product in proportion, putting the mixture into an extruder, putting glass fibers into a side feeding port of the extruder, and extruding to obtain the halogen-free flame-retardant reinforced PET alloy material.

The invention provides a high-safety energy storage semi-solid battery and a preparation method thereof. The energy storage semi-solid battery comprises a positive plate, a diaphragm, a gel electrolyte and a negative plate, the positive plate comprises a current collector, a positive active layer and a coating which are stacked in sequence, and the material of the coating comprises lithium titanium aluminum phosphate, a first binder and aluminum oxide; the gel electrolyte is obtained by polymerizing a gel electrolyte composition, and the gel electrolyte composition comprises a lithium salt, an organic solvent, vinylene carbonate, polystyrene, 1, 3-dioxolame and an initiator. The positive plate and the gel electrolyte are matched for use, so that the safety risks, such as leakage, combustion and explosion, possibly caused by the liquid electrolyte can be eliminated.

The present application relates to an adjuvant composition comprising:(i) a STING agonist of Formula (I) or a pharmaceutically acceptable salt thereofand(ii) aluminium hydroxide, aluminium phosphate, aluminium oxyhydroxide, or aluminium hydroxy phosphate;immunogenic compositions comprising the adjuvant composition, their use in methods of immunising a subject, and related aspects thereof.

The invention discloses a method for preparing 3-hydroxypropionaldehyde by catalyzing acrolein hydration through a molecular sieve. The hierarchical pore structure SAPO-11 molecular sieve is prepared by adopting double template agents, and the method comprises the following steps: firstly, fully mixing phosphoric acid, an aluminum source and a template agent 1, and carrying out pre-crystallization to obtain precursor gel; and fully mixing the precursor gel, a silicon source and a template agent 2, crystallizing, washing, drying and roasting to obtain the SAPO-11 molecular sieve catalyst. The prepared catalyst shows high conversion rate and 3-hydroxypropionaldehyde selectivity in the acrolein hydration reaction, reaction conditions are mild, byproducts are few, stability is high, and the catalyst has good industrial application prospects.

The utility model discloses a system for producing aluminum phosphate under normal pressure, which belongs to the technical field of aluminum phosphate synthesis equipment and comprises a reaction kettle and a controller, an aluminum chloride feeding pipeline, a disodium hydrogen phosphate feeding pipeline and an alkali liquor feeding pipeline are connected onto the reaction kettle, a valve I is arranged on the alkali liquor feeding pipeline, the controller is in control connection with the valve I, and a valve II is arranged on the controller. A jacket is arranged on the outer side of the reaction kettle or a heat exchange pipe is arranged in the reaction kettle, a discharge port is formed in the bottom of the reaction kettle, a stirring mechanism and a temperature sensor are mounted on the reaction kettle, and the reaction kettle is connected with a storage tank after being connected with a condenser through a pipeline. And related equipment and pipelines are relatively few, and the equipment cost is relatively low.

The application belongs to the technical field of aluminum diethyl hypophosphite synthesis, and particularly relates to a preparation method and application of aluminum diethyl hypophosphite. The preparation method of the aluminum diethyl hypophosphite comprises the following steps: mixing soluble hypophosphite and a first solvent in a reactor to obtain a soluble hypophosphite solution; replacing air in the reactor with nitrogen and heating; introducing ethylene into the soluble hypophosphite solution to obtain a reaction solution; mixing an initiator, a catalyst and the reaction solution, reacting, obtaining a diethyl hypophosphite solution, adding a second solvent to obtain a diluted diethyl hypophosphite solution; adjusting the pH of the diluted diethyl hypophosphite solution to be acidic, adding an aluminum sulfate aqueous solution, and reacting to obtain the aluminum diethyl hypophosphite. The initiator comprises an oxidizing agent and a reducing agent. The application can reduce the reaction temperature to 22-50 DEG C, reduce energy consumption, improve the reaction efficiency, and obtain the aluminum diethyl hypophosphite with high purity and high yield.

This invention discloses a modified PA6 / GF composite material with synergistic organic-inorganic flame retardancy and its preparation method. Based on a total mass fraction of 100%, it comprises the following raw material components: 39-52% PA6 resin, 25-30% modified glass fiber, 15-20% modified ammonium polyphosphate, 5-8% zinc phosphate, 0.05-3% polytetrafluoroethylene, 0-2% lubricant, and 0-2% antioxidant. The modified glass fiber is glass fiber sequentially modified with diethylaluminum hypophosphite and a silane coupling agent; the modified ammonium polyphosphate is ammonium polyphosphate modified with a silane coupling agent. This invention, through the compounding of SAPP and zinc phosphate, synergistically enhances the double-layer interface engineering of glass fiber, significantly improving flame retardant efficiency. The resulting composite material exhibits excellent mechanical properties and good heat resistance, and can be widely used in the automotive and electrical industries to manufacture various parts and electrical materials.

The invention relates to impregnation liquid for graphite impregnation, application of the impregnation liquid and an obtained high-performance graphite material, and belongs to the technical field of graphite surface treatment. According to the impregnation liquid, a synergistic system is formed by phosphoric acid, aluminum dihydrogen phosphate, aluminum hydroxide, hydrochloric acid and other components according to a specific ratio, and after pressure impregnation and curing, a compact aluminum phosphate ceramic protection layer can be formed on the surface of graphite and in internal pores. The protective layer can effectively block oxygen permeation, so that the oxidation resistance of the graphite product is remarkably improved; and meanwhile, graphite pores are fully filled with the impregnation liquid, so that the compactness, hardness and breaking strength of the material are synchronously improved, and the service life of the material in a severe environment is remarkably prolonged. The service life of the treated graphite rotor in molten aluminum degassing is prolonged from 3-4 days to 7-10 days, and the core problems that the rotor is prone to loss and frequent in replacement are effectively solved. The comprehensive performance of the graphite product treated by the impregnation liquid is remarkably improved, and the harsh application requirements in the fields of aluminum processing and the like can be better met.

This invention belongs to the field of batteries, specifically disclosing a battery cathode material and its preparation method. The method includes the following steps: S1: Pretreating a vanadium-containing leachate using polyaluminum ferric silicate to obtain a pretreated solution; S2: Purifying the pretreated solution using chitosan and medical-grade aluminum phosphate gel to obtain a purified solution; S3: Adding an oxidant and an ammonium source to the purified solution to oxidize and precipitate vanadium, obtaining ammonium metavanadate precipitate; S4: Calcining the ammonium metavanadate precipitate to obtain high-purity vanadium pentoxide; S5: Preparing the battery cathode material using the high-purity vanadium pentoxide. The present invention combines the synergistic effect of a biological agent (chitosan) and an inorganic flocculant (polyaluminum ferric silicate), and introduces medical-grade aluminum phosphate gel for targeted phosphorus removal, thus preparing high-purity vanadium pentoxide. Using this high-purity vanadium pentoxide as a raw material, a high-performance battery cathode material is prepared.

The invention relates to the technical field of high polymer materials, and discloses an aerogel modified gas-phase TPO (thermoplastic polyolefin) flame-retardant material which comprises the following components in parts by weight: 70-90 parts of TPO, 10-30 parts of a flame retardant and 0.1-0.5 part of an antioxidant, wherein the flame retardant is prepared from the following components in parts by weight: 30 to 60 parts of aerogel modified diethyl aluminum hypophosphite, 20 to 50 parts of a high-phosphorus polymer, 5 to 20 parts of a synergistic agent, 0.5 to 2 parts of a surface modifier and 0.5 to 5 parts of petroleum rubber processing oil; the preparation method comprises the following steps: uniformly mixing the TPO, the flame retardant and the antioxidant, adding the mixture into a double-screw extruder, controlling the rotating speed of a main machine to be 350-550r / min, the processing temperature of a first area to be 140-180 DEG C, the processing temperature of other areas to be 150-200 DEG C and the temperature of a machine head to be 170-200 DEG C, and carrying out melt blending and extrusion granulation to obtain the aerogel modified gas-phase TPO flame-retardant material. According to the technical scheme, the TPO flame-retardant material which is excellent in flame retardance, remarkable in heat insulation effect and excellent in mechanical property can be obtained, meanwhile, the material does not have the molten drop phenomenon in the using process, and industrial production can be achieved.