307 results about "Zirconium hydroxide" patented technology

The present invention relates to a shaped solid acid catalyst for the isomerization of hydrocarbons and so on, which has a high activity and is excellent in strength and easily handleable, and processes for the preparation thereof. This catalyst comprises a support comprising portions of zirconia having a tetragonal form and portions of alumina, and a sulfureous component and, if necessary, a Group 8, 9 or 10 metal component both being supported on the support, and has a specific surface area of 150 m2 / g or above. The catalyst can be prepared by kneading aluminum hydroxide, zirconium hydroxide and a sulfureous compound, shaping the kneaded mixture, calcining the shaped material at such a temperature as to form tetragonal zirconia and, if necessary, supporting a Group 8, 9 or 10 metal component on the calcined material and calcining the resulting molding at 300 to 700° C.

The invention relates to a sulfate radical sorbent magnetic nanometer zirconium hydroxide and a preparation method thereof. The preparation method comprises the following steps: (1), modifying magnetic Fe3O4 nanoparticles; (2), under mechanical stirring, firstly, quickly dripping a ZrOC12 solution in a Fe3O4 suspending liquid, then slowly dripping an ammonia solution until the pH value is 9-10, followed by standing and aging so as to obtain wet sol sedimentation, and finally performing sedimentation washing and suction filtration; and (3), dissolving the wet sol in a n-butanol for azeotropic distillation, vacuum drying after the termination of the distillation, and extracting for grinding and sieving so as to obtain the sulfate radical sorbent magnetic nanometer zirconium hydroxide. According to the invention, the solid-liquid separation is easily realized after the adsorption of the sulfate radical sorbent; the magnetic field solid-liquid separation is simpler and convenient; and the water basically has no residual after the sulfate radical is desorbed, and the adsorption effect is good.

The invention provides a titanium / zirconic containing coating agent for film-forming that contains a titanium / zirconic aqueous solution obtained by reaction of (A) titanium compound and (B) zirconic compound with oxyful; wherein the (A) titanium compound is at least one selected from low condensate of hydrolytic titanium compound, hydrolytic titanium compound and low condensate of titanic hydroxide and titanic hydroxide. The (B) zirconic compound is at least one selected from low condensate of hydrolytic zirconic compound, hydrolytic zirconic compound and low condensate of zirconic hydroxide and zirconic hydroxide. In addition, the invention further provides a titanium / zirconic film forming method and coated metal basal material of capsule formed by coating agent.

The present invention provides a porous zirconium powder having improved heat resistance of total pore volume, and a simple production method thereof. More specifically, the present invention provides:(1) a porous zirconium powder in which total pore volume following heat treatment for three hours at 1000° C. is at least 0.75 ml / g, and total volume of pores having a diameter of 10 to 100 nm following heat treatment for three hours at 1000° C. is at least 30% of the total pore volume, and(2) a production method of a porous zirconia powder comprising: forming a basic zirconium sulfate by adding a sulfating agent to a zirconium salt solution; forming zirconium hydroxide by neutralizing the basic zirconium sulfate; and heat-treating the zirconium hydroxide, wherein, when adding the sulfating agent to the zirconium salt solution, the sulfating agent is added to the zirconium salt solution having a temperature of 100° C. or higher in an autoclave.

The invention discloses a method for preparing press tool by using ZTA material. The method of the invention has the following procedures: a coprecipitation method is adopted to prepare zirconium hydroxide and yttrium hydroxide collosol; yttrium stable zirconia collosol and nano-alumina powder are mixed evenly according to the mixture ratio of 75 to 95 percent weight content of A12O3 in ZTA powder materials, and calcined at the temperature of 500 to 900 DEG C to obtain the ZTA powder in which zirconia is evenly distributed; then zirconia-toughened alumina ceramics is formed by baking at the temperature of 1500 to 1600 DEG C after the isostatic pressing at the pressure of 150MPa to 250MPa. The ZTA material prepared by the method has the advantages of high strength, high fracture toughness property, high hardness, high temperature resistance, corrosion resistance and anti-abrasive property, etc. By using ZTA ceramics materials to prepare alkaline cells and tablet press tool used in pharmaceuticals industry, the abrasive resistance property of the tool is greatly increased and the life service is prolonged.

The invention relates to a preparation method of a WO3 / ZrO2 solid super acidic catalyst. The method comprises the following steps that a zirconium hydroxide emulsion is heated in a round-bottom flask with a condenser pipe for 1-24h; a zirconium hydroxide solution is repeatedly leached and washed till a pH value of a filtrate is 6-8 and no chlorion exists; a zirconium hydroxide filter cake is soaked in C2H5OH with the concentration of 99% in a constant-temperature drying oven; drying is conducted after C2H5OH is removed; powdery zirconium hydroxide is obtained, and ground till a particle size is less than 80 meshes; and then ammonium metatungstate serves as a raw material, and is impregnated by an equal-volume method, dried and roasted to form the WO3 / ZrO2 solid super acidic catalyst. The method has the advantages of easiness and simplicity in operation, low reaction temperature, good stability and the like; in addition, in the WO3 / ZrO2 solid super acidic catalyst prepared by the method, the proportion of a tetragonal phase of zirconium dioxide is increased; a specific surface area is increased; the activity of catalytic reaction is improved obviously; and the cost is lowered effectively.

The invention discloses a calcium carbonate for carbonless copy paper coating as well as the preparation and application thereof and the preparation method comprises the steps that: 1. the preparation of crystal seed zirconium hydroxide: alkaline material aqueous solution in zirconium salt aqueous solution is added to produce crystal seed zirconium hydroxide slurry; 2. the crystal seed zirconium hydroxide slurry is added into calcium hydroxide slurry, carbonized through carbon dioxide gas until pH is between 6.5-7.5 to get calcium carbonate slurry for carbonless copy paper coating, and then calcium carbonate for carbonless copy paper coating is collected. The calcium carbonate for carbonless copy paper coating can be applied to carbonless copy paper coating, which results in high smoothness of carbonless copy paper and high coloring speed.

Process of mono-dispersing nano-superfine zirconium anhydride is carried out by dissolving zirconium oxychloride into de-ionized water, adding into zirconium oxychloride solution into ammonia water slowly while agitating to obtain zirconium hydroxide hydrosol, transferring it to filter press, adding into water, washing to obtain zirconium hydroxide powder, putting it into kiln, burning for 4-5 hrs, and crushing by air flow to obtain final product. The mono-crystal granular diameter is 60-100 nm. It has excellent purity, activity and mono-dispersion.

The invention relates to a production method of nanoscale high-purity zirconium dioxide composite powder. The method comprises the following steps: taking zirconium tetrachloride as the raw material, drying the raw material, then removing impurity with boiling point being lower than that of zirconium tetrachloride and impurity with boiling point being higher than that of zirconium tetrachloride through a two-step distillation crystallization method, dissolving zirconium tetrachloride by using a mixed solution of deionized water and alcohol, carrying out separation of zirconium and hafnium in the solution through an MIBK extraction-elution resin filled extraction chromatographic column, then further purifying zirconium tetrachloride through an ion exchange mode, adding chloride into a high-purity zirconium tetrachloride solution to form a zirconium tetrachloride compound solution, then obtaining zirconium hydroxide gel through an ammonia water spraying co-precipitation manner, carrying out hydrothermal reaction of the zirconium hydroxide gel in a high-pressure reactor, and finally filtering, washing and drying to obtain the nanoscale high-purity zirconium dioxide composite powder. The nanoscale high-purity zirconium dioxide composite powder prepared by the method has the advantages of high purity, uniform particle size, high dispersibility and the like and is applicable to industrial production.

The invention relates to a preparation method and a phosphorus removal method of a zirconium oxide-loading phosphorus removal biological composite material. The preparation method comprises: dissolving zirconium oxychloride in dehydrated alcohol, adding brine shrimp egg shell, carrying out ultrasonic and magnetic stirring at a room temperature to make the zirconium oxychloride gradually diffuse to the inner surface of egg shell pore channels, placing into a water bath pot to evaporate the ethanol, taking the egg shell out, adding the zirconium oxychloride-loading egg shell to a NaOH solution, carrying out mechanical stirring at a room temperature, carrying out in situ precipitation to produce zirconium hydroxide in the egg shell pore channels, filtering, washing the shell egg complex a plurality of times with distilled water until achieving the neutral state, and drying in a drying oven to prepare the zirconium oxide-loading brine shrimp egg shell biological composite material. The phosphorus removal method comprises that: phosphate-containing sewage passes through a cylindrical fixed bed absorption device filled with the zirconium oxide-loading brine shrimp egg shell biological composite material in a forward flow manner so as to efficiently purify the phosphate-containing sewage; the composite material after absorption is subjected to desorption by using a NaOH and NaCl mixing solution, and the desorbed composite material is subjected to water washing by using deionized water to achieve the neutral state so as to be recycled.