20results about "Phosphorus oxyacids" patented technology

A compound represented by the formula (1): XOa (1) where X = NbbSrc, NbbPd, NbbSrcPd, or SrcPd, wherein, when X = NbbSrc, the ratio of c:b is from 1:100 to 0.95:1 or from 1.05:1 to 100:1, wherein, when X = NbbPd, the ratio of b:d is from 1:100 to 0.45:1 or from 0.55:1 to 100:1, wherein, when X = NbbSrcPd, the ratio of c:b is from 1:100 to 100:1 and the ratio of b:d is from 1:100 to 2.95:1, wherein, when X = SrcPd, the ratio of c:d is from 1:100 to 1:3.05, from 1:2.95 to 1:1.05, or from 1.55:1 to 100:1, and wherein any niobium present within the compound is in the 4+ oxidation state.

A positive electrode material for a lithium-ion secondary battery includes granulated bodies 10 each having a core 11 and a carbon coating 12. The core 11 is made of olivine-type lithium manganese iron phosphate represented by a general formula LiMnxFeyPO4 ("x" and "y" are numerical values satisfying "x + y = 1", "0 < x < 1", and "0 < y < 1"). The carbon coating 12 is formed on a surface of the core 11. The core 11 has a structure in which primary particles of the olivine-type lithium manganese iron phosphate are aggregated. The primary particles have a particle size of 100 nm or less. The granulated bodies 10 have a pore volume of 0.2 cm3 / g or less in a pore size range of 2 nm to 300 nm, inclusive. The granulated bodies 10 have a carbon content of 1.8 mass% or greater and 3.0 mass% or less.

The invention relates to inorganic compounds having a structure of argyrodite type which are derived from a process comprising a step of grinding alkali metal sulfide, alkali metal sulfate, phosphorus pentasulfide and an alkali metal halide. Also described are electrode materials, electrodes, electrolytes comprising said compounds, and the uses thereof in electrochemical cells, in particular in batteries known as all-solid-state batteries. Prolonged grinding of the precursors, followed by little or no annealing, gives compounds of formula M6-xPS5-x-yOyZ1i+x or M6-x2yPS5-x-yOyZi+x in which M is chosen from Li, Na and K, Z is a halogen atom chosen from F, Cl, Br and I, where x denotes the number of Z in excess of 1 or is equal to zero, and y is a number other than zero.

The application provides a lithium-containing nickel-manganese composite oxide, a preparation method thereof, a positive electrode sheet containing the lithium-containing nickel-manganese composite oxide, a secondary battery and an electric device, and the lithium-containing nickel-manganese composite oxide has a core-shell structure, comprising an inner core and a shell coated on the surface of the inner core, the inner core comprises Li x (Ni y Mn 2‑y ) 1‑m M m O4, M comprises one or more selected from Mg, a fourth sub-group element to a sixth sub-group element, a third main group element to a fifth main group element and a lanthanide series element, 0.95≤x≤1.10, 0.40≤y≤0.60, 0.001≤m≤0.015, and the shell comprises aluminum lithium phosphate and optionally comprises aluminum lithium phosphate and aluminum phosphate. The lithium-containing nickel-manganese composite oxide provided by the application can make the secondary battery simultaneously have high energy density, good cycle performance and storage performance and low gas production.

A process for preparing a fluorinating reagent from a calcium-containing compound is disclosed. The process bypasses the requirement to form hydrofluoric acid. The fluorinating reagent can be used to prepare high-value fluorochemicals.

A solid-state electrolyte material includes doped lithium argyrodite of formula of Li6-2a-bMaTCh5-a-bOaX1+b; where 0<a≤0.5; 0<b≤0.5, M is Zn, Mg, Ca, Sr, Be or a combination of any two or more thereof; T is P, As, Sb, or a combination of any two or more thereof; Ch is S, Se, or a combination thereof; and X is F, Cl, Br, I, or a combination of any two or more thereof.

The invention belongs to the technical field of electrocatalysis, biomass value-added utilization, polymer recycling and green chemistry, and particularly relates to a novel surface reconstruction CoZn oxygen phosphate electrode and application of the novel surface reconstruction CoZn oxygen phosphate electrode in efficient conversion of polylactic acid hydrolysate into acetic acid. A CoZn precursor oxide is prepared through a coprecipitation method, then the CoZnOP catalyst is obtained through phosphating treatment, the CoZnOP catalyst has a unique stacked three-dimensional nano-structure, the synergistic effect of Co and Zn and surface reconstruction induced by doping of the P element, the high specific surface area and rich active sites are provided, and the CoZnOP catalyst has a good application prospect in preparation of acetic acid through electrocatalytic oxidation of lactic acid. The selectivity, the yield, the energy consumption and the stability of the method are obviously superior to those of the prior art, and the method is an ideal technical scheme for realizing high-value utilization of the polylactic acid hydrolysate.

The invention belongs to the technical field of resource recovery, and particularly relates to a method for preparing a lithium ferric manganese phosphate precursor by recycling a waste phosphate positive electrode material as well as a product and application thereof. The method comprises the following steps: S1, dispersing waste phosphate positive electrode material powder in a phosphoric acid solution for reaction, and filtering after the reaction is finished to obtain filter residue 1 and filtrate 1; s2, adding a metal source into the filtrate 1 for reaction, continuously heating, and filtering after the reaction is finished to obtain filter residues 2 and filtrate 2; and S3, drying the filter cake to obtain the rhodochrosite type ferric manganese phosphate precursor. The method for preparing the ferric manganese phosphate precursor by regenerating the waste phosphate positive electrode material is more environment-friendly, more elements are recycled, and the comprehensive utilization rate of the elements is high.

The present technology relates to inorganic compounds having an argyrodite-type structure based on an alkali metal obtained by a preparation process comprising a step of grinding the sulfide of the alkali metal, the sulfate of the alkali metal, phosphorus pentasulfide and a halide of the alkali metal. Also described are electrode materials, electrodes, electrolytes comprising said inorganic compound having an argyrodite-type structure and their uses in electrochemical cells, for example, in electrochemical accumulators, particularly in all-solid-state batteries.

The present invention discloses a diethylphosphinate aluminum crystal with low content of fine powder, its preparation method, and its use in flame retarding glass fiber reinforced engineering plastics. The present invention uses phosphorus-containing aluminum salt complex as seed crystals to add in the process of preparing diethylphosphinate aluminum crystals, effectively controlling the crystallization process, and obtaining diethylphosphinic acid crystal particles with low content of fine powder, narrow distribution, and large particle size, which can solve the problems of conventional diethylphosphinate aluminum powder such as easy bridging and clogging, and can be applied to the processing process of non-halogen flame retardant glass fiber reinforced engineering plastics. The prepared diethylphosphinate aluminum contains a small amount of phosphorus-containing aluminum salt complex seed crystals, and its flame retardancy is not affected.

To provide a method for preparing a glass fiber-nylon composition that can effectively improve the flame retardant properties of glass fiber-nylon composites.SOLUTION: The preparation of the composition includes the steps of: (1) condensing and polymerizing a compound represented by formula (I) in the presence of an inorganic acid and acetic anhydride to obtain a partially condensed polymer in which a portion forms a high-molecular-weight polymer; (2) reacting the partially condensed polymer with a rare earth inorganic salt to obtain a phosphonate; (3) mixing the phosphonate, an organic silicone flame retardant, and an inorganic silicone synergist to obtain a flame-retardant composition; (4) melt-extruding a raw material containing a first nylon, the flame-retardant composition, a lubricant, and an antioxidant in an extruder to obtain a flame-retardant masterbatch; and (5) melt-extruding a raw material containing a second nylon, glass fibers, the flame-retardant masterbatch, and additives in an extruder to obtain a composition.SELECTED DRAWING: Figure 1

The present technology relates to inorganic compounds having an argyrodite-type structure based on alkali metals, which are obtained by a preparation method comprising a step of grinding an alkali metal sulfide, an alkali metal sulfate, phosphorus pentasulfide, and an alkali metal halide. Also described are electrode materials, electrodes, electrolytes, and their use in electrochemical cells, such as electrochemical accumulators, in particular all-solid-state batteries, which comprise said inorganic compounds having an argyrodite-type structure.

The application discloses a mine acid wastewater high-value utilization method, which comprises the steps of concentration, reduction reaction, zinc removal through sulfuration, aluminum removal through neutralization, oxidation, calcium and magnesium removal, oxidation synthesis, aging and washing and the like. The application realizes rapid and efficient utilization of valuable resources such as acid iron, copper and zinc in mine acid wastewater, realizes waste-to-resource, and uses iron in the mine acid wastewater as an iron source for preparing phosphoric iron, thereby effectively solving the mine acid wastewater treatment problem, solving the source and cost bottleneck problem of the iron source for preparing phosphoric iron, and having remarkable economic, social and environmental protection benefits.

A catalyst has a carrier and a hydrogenation active metal component supported on the carrier. The hydrogenation active metal component contains at least one Group VIB metal component and at least one Group VIII metal component, and the carrier is composed of phosphorus-containing alumina. When the hydrogenation catalyst is measured using a hydrogen temperature programmed reduction method (H2-TPR), the ratio of the peak height of the low-temperature reduction peak, Plow-temp peak, at a temperature of 300-500° C. to the peak height of the high-temperature reduction peak, Phi-temp peak, at a temperature of 650-850° C., i.e. S=Plow-temp peak / Phi-temp peak, is 0.5-2.0; preferably 0.7-1.9, and more preferably 0.8-1.8. The hydrogenation catalyst shows excellent heteroatom removal effect and excellent stability when used in hydrotreatment.

The application discloses a VPO catalyst and application thereof in oxidation of n-butane to prepare dicanhydride. The method comprises the following steps: dissolving a mineralizer A and a template B in water, stirring and mixing, adding alcohol and vanadium in an oxidized state, heating and refluxing, adding phosphoric acid to continue the reaction, adding a silicon source, washing and drying the obtained solid, and calcining to remove the template to obtain a precursor; adding the precursor into small-molecule alcohol and water, and obtaining catalyst particles through pressing, demolding, drying, crushing and screening. The process method adopted by the application can realize protection of the VPO catalyst, reduce abrasion and activity reduction caused by catalyst coking, ensure accessibility of active centers through linear pores, ensure stable operation of the catalyst, and prolong the service life of the VPO catalyst.

A process for preparing a fluorinating reagent from a calcium-containing compound is disclosed. The process bypasses the requirement to form hydrofluoric acid. The fluorinating reagent can be used to prepare high-value fluorochemicals.

To provide a flame retardant composition that can effectively improve the flame retardance of a glass fiber-nylon composite material, does not generate a toxic gas during use, and allows smooth raw material feeding during processing, and also to provide a preparation method of the flame retardant composition, a masterbatch, and a glass fiber-nylon composition.SOLUTION: A flame retardant composition comprises 40-60 pts.wt. of phosphonate, 5-15 pts.wt. of an organosilicon flame retardant, and 2-8 pts.wt. of an inorganic silicon synergist, wherein the phosphonate is obtained by a preparation method comprising: condensing a compound represented by a formula (I) such that some of the compounds form a polymer, thereby yielding a partially condensed product; and reacting a rare earth inorganic salt with the partially condensed product to form the phosphonate.SELECTED DRAWING: Figure 1

The various embodiments of the present invention provide a system and method for extraction of lithium from active materials of lithium iron phosphate battery. The method involves extraction of materials from spent battery and heating a mixture of the battery's black mass with suitable reagents at specific temperature in a predetermined ratio, to initiate a chemical reaction that efficiently produces lithium chloride, which is then extracted through water leaching. This method eliminates the need for harmful acids and solvents, operates at lower temperatures, and directly produces lithium chloride in a form that is both pure and economically valuable. Furthermore, the process is environmentally friendly, reduces operational costs, and enhances lithium recovery rates. By-products such as calcium fluorophosphate and iron oxide are also repurposed, supporting sustainability and reducing waste. This system offers a significant improvement over traditional methods, providing a safer, more sustainable, and cost-effective solution for recycling Lithium ion batteries.

The present technology relates to inorganic compounds having an argyrodite-type structure based on an alkali metal obtained by a preparation process comprising a step of grinding the sulfide of the alkali metal, the sulfate of the alkali metal, phosphorus pentasulfide and a halide of the alkali metal. Also described are electrode materials, electrodes, electrolytes comprising said inorganic compound having an argyrodite-type structure and their uses in electrochemical cells, for example, in electrochemical accumulators, particularly in all-solid-state batteries.