242 results about "Aluminium phosphate" patented technology

The invention relates to a battery electrode material, in particular to a lithium titanate composite electrode material with surface coating layer; in the lithium titanate composite electrode material with surface coating layer, the electrode material is composed of lithium titanate particles and a coating layer coated with the surface of the lithium titanate particles; the particle size of the lithium titanate particles is 100nm-95mum, the average thickness of the surface coating layer is 0.2nm-5m, and the particle diameter of the composite electrode material is 0.1-100mum; the material of the surface coating layer is one or mixture of more than one kind of insulation oxide, insulation composite oxide, aluminium phosphate, magnesium phosphate, lithium fluoride, lithium phosphate or LiMPO4, wherein M is magnesium, ferrum, cobalt, nickel, chromium, titanium or vanadium; in the invention, by carrying out surface coating treatment to the surfaces of the existing lithium titanate particles, a layer of protective film is formed on the surface, so as to change the physical and chemical characteristics of the surface of the lithium titanate active material, the surface can not be reacted with electrolyte even if under overpotential condition, so as to avoid ballooning and ensure the capacity and the circularity of the battery not to be reduced.

A process for preparing low-carbon olefin from methanol or dimethyl ether includes loading its raw material and silicon aluminium phosphate (SAPO34) molecular sieve as catalyst into gas-solid parallel down-flowing fluidized bed reactor, super-short contact, reaction, fast gas-solid separation to separating resultant from catalyst to prevent secondary reaction, and regerating catalyst for cyclic use. Its advantages include high output rate (93%), high conversion rate of raw material, and less by-product.

The invention discloses a nano ceramic coating with high emissivity, which is prepared from a high temperature resistant basic material, an additive with high emissivity, a binder, a stabilizing agent and a solvent. The high temperature resistant basic material and the additive with high emissivity are one or several of alumina, silicon oxide, boron nitride, silicon carbide, ferric oxide and cerium oxide. The binder is one or several of silica gel, potassium silicate solution, aluminium phosphate solution, silicon oxide hydrate, ethanol and water. By weight percentage, the high temperature resistant basic material and the additive with high emissivity account for 5-78%, the binder accounts for 5-30%, the stabilizing agent accounts for 0.5-3% and the balance of solvent is water. The coating which can be used above 1300 DEG C has the advantages of being wide in work temperature range with the maximum service temperature close to 2000 DEG C, applicable to various base materials, strong in adhesive force to the base materials, applicable to reaction atmosphere, good in long-time durability and strong in heat shock endurance, improving thermal efficiency, lowering temperature of the base materials, and being excellent in abrasion and corrosion resistance, less in impact on environment, convenient to use and the like.

The invention relates to a preparation method of aluminium phosphate sol used for a petroleum hydrocarbon cracking catalyst, which is characterized by comprising the steps of: mashing and dispersing an acid soluble aluminum precursor and decationed water into serous liquid with solid content of 15-35 percent, slowly adding phosphoric acid with concentration of 60-98 percent into the serous liquidunder the stirring according to the weight proportion of P/Al=1.0-2.5; then adding hydrogen nitrate with concentration of 40-98 percent according to the weight proportion of HNO3/Al2O3=0.2-2.0, rapidly reacting and releasing a large quantity of heat; and generating colorless transparent thick liquid after the reaction. The microactivity of the catalytic cracking catalyst prepared by adopting the aluminium phosphate sol bonder provided by the invention is remarkably improved. The selectivity of the aluminium phosphate sol is improved, the yields of gas and coke are remarkably reduced, and the yields of light oil and propylene are improved.

The invention discloses a method for wet production of phosphoric acid and a byproduct, namely white gypsum, relating to the technical field of phosphorus chemical industry. The method is mainly used for solving the problems in the traditional wet production of phosphoric acid that the byproduct, namely phosphogypsum is high in impurity content, poor in quality and yellow grey, dark grey and black in appearance, can be stacked only as waste and pollutes the environment. The method comprises the steps of firstly, reacting phosphorite powder (slurry) (the content of phosphorus pentoxide in phosphorite is 18-35%) and phosphoric acid of a volume, which is 16-32w% of the weight of phosphorus pentoxide, for 15-60 minutes at the temperature of 45-70 DEG C while stirring, so as to produce mixed slurry containing phosphoric acid, a calcium phosphate solution, phosphorite carrying acid insoluble matters and a small amount of produced calcium fluoride, ferric phosphate and aluminum phosphate solid impurities; continuously or intermittently precipitating the mixed slurry for 1.0-3.5 hours, and carrying out layered separation, so as to obtain a phosphoric acid and calcium phosphate mixed solution and thick slurry containing solid impurities; adding 40-98w% sulfuric acid while stirring, reacting sulfuric acid and the phosphoric acid and calcium phosphate mixed solution for 10-40 minutes, precipitating for layering, and separating, thereby obtaining phosphoric acid and white gypsum. The method has the advantage that the pollution to atmosphere, soil and groundwater due to phosphogypsum stacking is reduced.

A hydrocarbon catalytic cracking catalyst is characterized in that in terms of 100wt% of the catalyst, the catalyst comprises 30-80wt% of molecular sieve and 10-65wt% clay; the catalyst comprises 5.0-20.0wt% of P calculated in the form of P2O5, and 0-1.0wt% of La2O3; P in the catalyst is provided by aluminium phosphate sol; and the aluminium phosphate sol adopted by the catalyst comprises 2-10wt%of AI and 5-15wt% of P, wherein the pH of the aluminium phosphate sol is 1.0-2.5, and the aluminium phosphate sol comprises 2-20wt% of P calculated in the form of HNO3. The prepared hydrocarbon catalytic cracking catalyst has great strength and high activity, can be used as an auxiliary to be mixed with a main catalyst, hardly reduces the activity of the main catalyst, can improve product distribution, has excellent selectivity for dry gas and coke, and meanwhile can improve the yield of light oil.

The invention discloses an electrolyte of a lead-acid accumulator and a preparation method thereof. The electrolyte comprises the following raw materials in part by weight: 25 to 45 parts of deionized water, 60 to 70 parts of dilute sulfuric acid solution, 1.8 to 2.8 parts of gas-phase nanometer silicon dioxide and 2.5 to 3 parts of electrolyte activating agent, wherein the electrolyte activating agent is prepared from the following raw materials in part by weight: 1,000 parts of deionized water, 2 parts of nickel sulfate, 2 parts of cobalt sulfate, 25 parts of aluminum sulfate, 15 parts of sodium sulfate, 25 parts of magnesium sulfate, 20 parts of aluminium phosphate, 5 parts of lithium iodide, 5 parts of lithium chloride and 20 parts of lithium carbonate. Because the nickel sulfate, the cobalt sulfate, the lithium chloride and the lithium carbonate are added into the electrolyte activating agent, the large current charge and discharge and the ultra-low temperature performance of the accumulator are increased by 25 to 30 percent, and the service life of the accumulator is prolonged by 25 to 30 percent compared with the traditional accumulator with the traditional electrolyte. Because of the adoption of the nanometer silicon dioxide and the adoption of high-speed shearing way in the preparation method, the prepared electrolyte does not settle down within 30 days.

The invention provides a method for synthesizing a silicoaluminophosphate molecular sieve SAPO-11 at normal pressure. The method is characterized in that the main process comprises the following steps of 1) preparation of eutectic mixture: fully grinding and mixing quaternary ammonium salt and organic acid or organic alcohol in a mortar with a mol ratio of 0.1 to 1.0; placing the mixture in a beaker, heating the beaker at a temperature of 80-180 DEG C to melt the mixture into transparent liquid, so as to obtain the eutectic mixture; 2) preparation of crystallization reaction mixture: adding phosphorus source, silicon source, mineralizing agent, template agent and aluminum source into the molten eutectic mixture in sequence, uniformly stirring the mixture at a mixing temperature range from 80 to 150 DEG C to form a reaction mixture; 3) crystallizing the reaction mixture prepared by step 2); and 4) water cooling the reactant reacted in step 3) to a room temperature, washing and separating the mixture, and drying and baking the washed and separated mixture, wherein the washed filtrate is recovered after rotary evaporation.

Disclosed are a ferrite catalyst and preparation methods thereof. The catalyst is provided with a formula below, wherein A is Mg atom, Zn atom or a mixture of both atoms at any ratio; D is one or more atoms selected from the group consisting of Ni, Co, W, Mn, Ca, Mo or V atom; Z is a catalyst carrier, which is one or more selected from the group consisting of calcium phosphate, calcium dihydrogen phosphate, aluminium phosphate, aluminium dihydrogen phosphate, ferric phosphate, magnesium phosphate, zinc phosphate, Mg—Al hydrotalcite, calcium carbonate, magnesium carbonate; a=0.01-0.6; b=0-0.30; c is a number balancing each valence; x, y represent the amounts of principal catalyst and carrier Z respectively, wherein the weight ratio y/x=0.5:1-7:1.

x(FeA_aD_bO_c)/yZ

The invention provides a high temeperature resistant inorganic cementing compound, relating to an inorganic cementing compound. The invention overcomes the disadvantages that the prior cementing compound has poor heat resistance and low connecting intensity of a glued joint metal material and a composite material. The high temperature resistant inorganic cementing compound consists of an inorganic solvent and a curing toughening agent which are mixed according to a mass ratio of 1 to 0.7-1.5, wherein, the inorganic solvent is a reaction solution of aluminium phosphate and cupric oxide, soluble glass or a aluminium phosphate solution; the curing toughening agent consists of 50 to 95 portions of inorganic solidified agent and 5 to 50 portions of toughening strengthening agent by weight portion. The high temperature resistant inorganic cementing compound has good heat resistance and high connecting intensity of the glued joint metal material and the composite material.

The present invention discloses one kind of silicon aluminum phosphate molecular sieve in AFO structure. It has molar composition in oxide form of Al2O3:yP2O5:zSiO2, where y is 0.60-1.20 and z is 0.05-1.3. It features that the molar composition before roasting to eliminate templating agent is (x1R1+x2R2):Al2O3:yP2O5:zSiO2, where R1 and R2 are templating agent in crystal pores of molecular sieve, R1 is diethylamine, R2 is di-n-propylamine, x1+x2 is 0.01-0.35, and neither x1 nor x2 is zero. The molecular sieve is synthesized with double templating agent and crystal seed and through high temperature synthesis.

The invention provides a castable used for electric furnace slag/iron notch and a method for pouring the electric furnace slag/iron notch. The castable used for the electric furnace slag and the iron notch comprises the following components by weight percent: 50-60wt% of carborundum grains, 12-16wt% of silicon carbide fine powder, 0-8wt% of Al203 micro powder, 0-5wt% of silicon micro powder, 0-5wt% of additive, 5-9wt% of binding agent, additionally added 5-9wt% of binding agent and 1-4wt% of coagulant, wherein the carborundum grains, the carborundum fine powder, the Al203 micro powder, the silicon micro powder and the additive are mixed on a mixing mill after being blended; adding the binding agent, milling and souring. When the castable is poured on site, the binding agent and the coagulant are additionally added and evenly stirred to obtain the castable used for the electric furnace slag and the iron notch, wherein the additive is at least one of sodium hexametaphosphate, sodium tripolyphosphate, carboxymethylcellulose and calcium lignosulphonate; and the binding agent is at least one of the sodium hexametaphosphate, phosphoric acid and aluminium phosphate.

The invention provides a chromium-free resin constituent with excellent corrosion resistance, alkali resistance, processability, electroconductibility, and chemical resistance, a method for carrying out a surface treatment on a steel plate, and a steel plate manufactured according to the method. The surface treatment steel plate is prepared through coating the steel plate by the resin constitute; after the steel plate is dry, the quantity of resin mixture adhered to the steel plate is in the scope of 300 to 1800mg/m<2>, wherein, based on the overall solid content of the resin constituent, the resin constituent consists of: mixture of hard urethane resin and 10-90 weight percent of soft urethane resin; based on the overall solid content of the mixture, the mixture contains 5-95 weight percent of soft urethane resin and 5-95 weight percent of hard urethane resin; 1-20 weight percent of Ti or Zr and the like organic oxide; 0.1-10.0 weight percent of at least one of compounds selected from a group composed of aluminium phosphate, aluminium dihydrogen phosphate, phosphate monozinc and hydrated manganese phosphate; solvent.

The invention discloses firm can plastic and a preparation method thereof. The firm can plastic comprises the following components in percentage by mass: 80 to 90 percent of a mixture of silicon carbide and mullite, 2 to 12 percent of silicon-containing micropowder of which the particle size is less than 2,200 meshes and 8 to 18 percent of low-temperature agglutinant, wherein the silicon carbide accounts for 5 to 15 percent of the mixture and the mullite accounts for 85 to 95 percent of the mixture. The preparation method comprises the following specific steps of: sequentially mixing for the first time, bundling, mixing for the second time, extruding, blanking and packing by taking the mullite and silicon carbide as a matrix material, and phosphoric acid and aluminium phosphate as a bonding agent. The firm can plastic has the advantages of effectively prolonging the service life of a refractory material, effectively improving the reliability of the refractory material, reducing the consumption and blowing out times of the refractory material, being used under the working condition of a dry coke quenching furnace, increasing the economic benefit and saving resources, along with high wear resistance and high compressive strength and compactness at normal temperature. The preparation method has the advantages of capability of improving the quality of the product, simple process and easy operation.

The invention comprises: solid constituent aluminium phosphate, silicon dioxide, alumina and aqueous solution. The grain size of said solid constituent is 0.01-1 mu m oxide particle stably dispersed in the aqueous solution to form multi phase suspended liquid. Calculated based on the 100% of solid constituent weight, wherein, the aluminium phosphate is 40wt%-64wt%, the silicon dioxide is 30wt%-57wt%; the alumina is 1wt%-6wt%; the heat-resistance of oxidation resistance ceramic film formed using the invention can reach 1400 deg.c The fluid graphite electrode is dipped in the invention, and after drying, an oxidation resistance ceramic film is formed on the graphite electrode.

The present invention relates to metalloaluminophosphate (MeAPO) molecular sieve with lamellar crystal morphology having an empirical chemical composition on an anhydrous basis, after synthesis and calcination, expressed by the formula HxMeyAlzPkO2 wherein, y+z+k=1 and x<=y, said molecular sieve having predominantly a plate crystal morphology in which the width (W) and the thickness (T) are such as : W/T is >= 10 and advantageously ranges from 10 to 100. In a preferred embodiment T is <= 0.15 mum, more desirably <=0.10 mum, more desirably <=0.08 mum, advantageously ranges from 0.01 to 0.07 mumand preferably from 0.04 to 0.07 mum. The above metalloaluminophosphate (MeAPO) molecular sieve can be made by a method which comprises : a) forming a reaction mixture containing a texture influencing agent (TIA), an organic templating agent (TEMP), at least a reactive inorganic source of MeO2 insoluble in the TIA, reactive sources of Al2O3 and P2O5, b) crystallizing the above reaction mixture thus formed until crystals of the metalloaluminophosphate are formed, c) recovering a solid reaction product, d) washing it with water to remove the TIA and e) calcinating it to remove the organic template. In an advantageous embodiment the MeAPO of the invention have essentially a structure CHA or AEI or a mixture thereof. Preferably they have essentially the structure SAPO 18 or SAPO 34 or a mixture thereof. The present invention also relates to catalysts consisting of the above MeAPO molecular sieves or comprising the above MeAPO molecular sieves. The present invention also relates to a process for making an olefin product from an oxygen-containing, halogenide-containing or sulphur-containing feedstock wherein said oxygen-containing, halogenide-containing or sulphur-containing feedstock is contacted with the above catalyst under conditions effective to convert the oxygen-containing, halogenide-containing or sulphur-containing feedstock to olefin products.

The invention discloses water phosphorus control technology and a phosphorus locking agent, and relates to the environment-friendly field of water pollution control and ecological restoration technology. Inorganic salt and hydrolysate thereof capable of releasing aluminum ions and the phosphorus locking agent for other aluminum-containing active sludge are thrown into the water, the phosphorus locking agent can slowly release the aluminum ions, and the aluminum ions are combined with phosphorus dissolved in the water and released in the bottom mud to generate more insoluble aluminium phosphate to permanently lock the active phosphorus in the natural water bottom so that the active phosphorus cannot be utilized by algae and aquatic animals and plants and the aim of permanently eliminating eutrophication is achieved. The water phosphorus control technology of the invention has the advantages of simple operation, quick response, little sludge, stable and durable effect and broad application. The phosphorus locking agent of the invention has the advantages of cheap, broad and readily available raw materials and medicaments, low cost, and safety, has no toxicity or pollution, also can be used for treating pollution by using waste, and is convenient for popularization and application.

The present invention relates to a method for preparing magnesium casting coating; 0.7 percent of paligorskite clay that is configured with 17 percent of water is milled for 3 hours to be made into solution A; secondly 5 percent of talcum powder, 3 percent of diatomite, 0.5 percent of KBF4 and 1 percent of aluminium phosphate are put into a spherical mill, and is respectively mixed with solution A, 3 percent of silica sol and 67.6 percent of water to be milled for 3 hours to obtain the magnesium alloy metal-typed casting coating; metal mould is heated to be about 200 DEG C, and then is sprayed with a layer of magnesium alloy casting coating on the surface, and is dried finally. The method of the present invention has the advantages of strong heat preservation, flame retardant performance, sticking performance and coating performance, favorable suspension performance and less heat fracture of the casting piece. Oxidation is prevented, so the surface is bright and smooth and is free from oxidized wrinkle.

The invention provides the nanometer integument powder which is made at the machinery-chemical action. It has inner core and integument, or inner, shell and integument. The inner core is composed by oxide compound or inorganic oxy salt, shell is composed by inorganic oxy salt, and the integument is composed by aluminum orthophosphate. The powder surface can be carried out anchorage solvating chain segment. The invention also provides the preparing method. The integument powder can be used as coloring agent, strengthening agent, powdered material to be used in coating mixture, rubber, plastic, admixture, ceramics, paper and magnetic material.

The invention discloses a method for recovering high purity calcium hydrogen phosphate in sulfur acid-containing waste phosphoric acid, which comprises the following processes: adding 0.5% of active carbon powder in the sulfur acid-containing waste phosphoric acid, filtering and adding excessive calcium carbonate suspending liquid or a calcium hydrate emulsion, filtering to obtain dihydrate calcium sulfate and aluminium phosphate, adding calcium with theoretical amount of 0.95-1.1 mole time required by phosphoric acid in the obtained filtrate with the forms of calcium carbonate suspending liquid and the calcium hydrate emulsion, filtering and drying to obtain high purity dihydrate calcium hydrogen phosphate; adding purified water in the obtained high purity dihydrate calcium hydrogen phosphate, beating, controlling the concentration of the solid content at 10-30%, heating a slurry to the temperature of 90-100 DEG C, stirring and aging for 0.5-1.5 hours, performing solid-liquid separation, and drying to obtain the high purity dicalicium phosphate anhydrous. The method has the advantages of simple process and low cost, and effectively uses sulfuric acid and phosphoric acid in waste acid, and reduces the harm on environment.

The invention provides a catalytic cracking catalyst, a preparation method therefor and an application thereof. Based on 100% of the total weight of the added raw materials for preparing the catalytic cracking catalyst, the catalyst is prepared from 10-70wt% of active components, 5-80wt% of a carrier and 1-30wt% of a binder modified by modifying substances, wherein the active components are ZSM-5-based hierarchical molecular sieves which are formed by splicing or stacking nano crystals; and the binder modified by modifying substances comprises one or a combination of several of silica sol, alumina sol and aluminum phosphate sol, which are modified by the modifying surface. The catalyst disclosed by the invention has a relatively long service life and has relatively high mechanical strength because of use of the binder modified by the modifying substances; besides, the catalyst is applied to catalytic cracking reaction of preparing propylene from C4 olefin, so that a relatively high product yield can be obtained, and the industrial application prospect is good.