25 results about "Zirconium compounds" patented technology

The invention discloses a composite ceramic material as well as a preparation method and application thereof. The composite ceramic material comprises an inner core and a shell layer, the shell layer coats at least part of the surface of the inner core; the inner core is prepared from raw materials including aluminum oxide, first YSZ ceramic and second YSZ ceramic; the shell layer is prepared from raw materials including a zirconium compound and a first binder. The first YSZ ceramic with the high yttrium content and the second YSZ ceramic with the low yttrium content are matched, a toughening synergistic mechanism combining a metastable region with non-uniform grain boundary Y enrichment is constructed, and compared with a traditional uniform doping method, the forming effect of the composite ceramic material can be remarkably improved; the fracture toughness and the bending strength are effectively improved on the premise that the sintering density and the hardness are not obviously influenced; and moreover, by forming the core-shell structure, the microstructure can be optimized, and synergistic improvement of strength and toughness is macroscopically realized.

The invention discloses an N-alkanoyl alkylamide hafnium / zirconium mixed complex as well as a preparation method and application thereof. Under the protection of inert gas, quantitative N-alkanoyl alkylamide and a tetra (diamine) hafnium / zirconium compound are added into an anhydrous solvent; adding an anhydrous solvent, reacting for a period of time, filtering, and removing the solvent and byproducts from the filtrate by reduced pressure distillation to obtain a white solid; and recrystallizing and sublimating the white solid to obtain the target metal complex. The precursor of the complex is a mononuclear compound formed by the ligand with large steric hindrance, and has good volatility and appropriate thermal stability, the synthesized product has small pollution to the substrate, the synthesis method is simple and convenient, the process operation is simple, the yield is high, the cost is low, and the complex has good application value in the field of preparation of high-K materials.

The present application belongs to the technical field of semiconductors, and particularly relates to a zirconium compound, a precursor composition containing the same, a thin film and a preparation method thereof. The zirconium compound has a chemical formula shown in formula 1, wherein R1, R2, R3 and R4 are each independently selected from one of H, methyl, ethyl or propyl. In the present application, nucleophilic substitution occurs between a pyrrole alkali metal salt and zirconium tetrachloride, and then the zirconium compound containing a cyclopentadiene and a pyrrole group is formed by reacting with cyclopentadiene. Compared with (cyclopentadienyl)tris(dimethylamino)zirconium, the zirconium compound has excellent thermal stability and excellent reactivity and volatility, which is helpful to form a high-purity low-impurity and uniform thin film, and greatly improves the quality of the thin film.

A method of forming a solid-state electrolyte powder includes the following steps. A zirconium compound layer is formed on an inner surface of a container. A precursor mixture is placed on the zirconium compound layer. The precursor mixture includes a first salt group and a second salt group. The first salt group includes zirconium source compound, lanthanum source compound, aluminum source compound, titanium source compound, tantalum source compound, or combinations thereof. The second salt group includes lithium source compound. An aerobic sintering process is performed to form the solid-state electrolyte powder.

The application belongs to the technical field of inorganic materials, and particularly relates to a preparation method of sodium zirconium cyclosilicate ZS-9 and application thereof. The preparation method comprises the following steps: reacting a silicon salt, an alkali and a zirconium-containing compound, adjusting pH, and filtering, so as to obtain the sodium zirconium cyclosilicate ZS-9, wherein the molar ratio of the silicon salt, the alkali and the zirconium-containing compound is 3.8-4.2:4-4.5:1. The preparation method of the sodium zirconium cyclosilicate ZS-9 is relatively mild in reaction condition, does not need special high-pressure reaction equipment, and is easy to realize industrialization. Compared with the prior art, the obtained sodium zirconium cyclosilicate ZS-9 has higher purity, yield and potassium ion exchange capacity.

The application belongs to the field of silver catalysts, and relates to a composite alpha-alumina carrier for a silver catalyst for ethylene oxidation to produce ethylene oxide, a preparation method of the composite alpha-alumina carrier, the silver catalyst and application. The composite alpha-alumina carrier comprises an alpha-alumina carrier and a porous alumina film containing zirconium coated outside the alpha-alumina carrier. The preparation method of the composite alpha-alumina carrier comprises the following steps: (1) dissolving an aluminum-containing compound, a pore-forming agent and a zirconium-containing compound in water, and preparing a solution after stirring; the pore-forming agent is urea, hexanediamine, sucrose or starch; (2) immersing the alpha-Al2O3 carrier in the solution obtained in step (1), and performing drying and calcination after leaching, to obtain the composite alpha-alumina carrier coated with a porous alumina film containing zirconium on the outer surface. The silver catalyst prepared from the alpha-alumina carrier of the application shows good reactivity and selectivity in the process of ethylene oxidation to produce ethylene oxide.

The application discloses a synthesis method of high softening point silicon oxide, and belongs to the technical field of silica preparation process. The method adds a small amount of titanium compound and / or zirconium compound in the process of synthesizing quartz sand, and the density and softening point of the synthesized quartz sand are significantly improved. In particular, the quartz sand with the titanium compound and the zirconium compound added simultaneously has more excellent softening point and density.

A method for preventing or reducing knock in a hydrogen fueled combustion engine is described. The method involves lubricating the crankcase of the engine with a lubricating oil composition that includes about 50 to about 3000 ppm of zirconium from one or more zirconium compound, based on total weight of the lubricating oil composition.

The invention discloses a method for preparing sequence-controlled degradable copolyester based on a zirconium complex catalyst. The method comprises the following steps: S1, synthesizing a tert-butyl amino triphenol ligand; s2, a zirconium compound, a tert-butyl amino triphenol ligand and a lactate compound are subjected to a reaction, and a zirconium complex catalyst is obtained; s3, under the catalysis of a zirconium complex catalyst, at least one cyclic ester monomer is subjected to a ring-opening polymerization reaction, and thus the degradable copolyester with the controllable sequence and steric regularity is obtained. The dicyclohexyl glycolide monomer structure and the methyl cyclohexyl glycolide monomer structure contain a rigid group cyclohexyl, so that the glass transition temperature of the polyester can be well improved, and the application range of the polyester can be widened. The glass transition temperature of one of the copolyesters prepared by the invention is as high as 86.8 DEG C. Meanwhile, the invention provides a method which is simple in process and easy to operate and is used for preparing copolyester, and the method has the advantages of controllable process, mild reaction conditions, narrow molecular weight distribution, controllable sequence and the like.

Providing a metal surface treatment agent capable of high-temperature firing and capable of imparting high corrosion resistance to a metal substrate. A metal surface treatment agent comprising a silicate compound (A); an alkali metal salt (B) other than a silicate compound, other than a vanadium compound, and other than a zirconium compound; a vanadium compound (C); a zirconium compound (D); and water, wherein the silicon element content is 10 mass% or more with respect to the total solid content of the metal surface treatment agent. Preferably, the silicate compound (A) is an alkali metal silicate.

Provided is a metal surface treatment agent that enables high-temperature sintering and imparts high corrosion resistance to a metal base material. A metal surface treatment agent contains a silicic acid compound (A), an alkali metal salt other than the silicic acid compound, a vanadium compound, and a zirconium compound, and the content of silicon is 10% by mass or more relative to the total solid content of the metal surface treatment agent. The silicic acid compound (A) is preferably an alkali metal silicate.

This application provides a solar cell and its fabrication method, a tandem solar cell, and a photovoltaic module. The fabrication method of the solar cell includes the following steps: providing a semiconductor substrate having a first surface and a second surface disposed opposite to each other; coating the first surface and / or the second surface of the semiconductor substrate with a conductive paste and sintering to form electrodes; wherein, by mass percentage, the conductive paste comprises: 65%~80% conductive powder, 1%~8% glass powder, 5%~10% organic carrier, and the balance being additives; the glass powder contains lead; the additives include zirconium-containing compounds and gallium-containing compounds. The solar cell prepared by this application can effectively improve the acetic acid resistance and photoelectric conversion efficiency of the solar cell, and improve the long-term reliability of the solar cell.

is disclosed. The method includes the following steps: (A) Dissolving a zirconium compound in an inorganic acid and adding a rare earth oxide to form a first mixture solution; (B) Creating a yttrium solution in an organic solvent or deionized water, then adding it to the first mixture solution with a dispersant and chelating agent, and performing ultrasonic vibration to form a second mixture solution; (C) Heating and stirring the second mixture solution to form a sol-gel mixture; (D) Performing thermal decomposition on the sol-gel mixture to create a zirconia precursor; (E) Performing heat treatment on the zirconia precursor to obtain the final zirconia powder.

Electrode active material comprising (A) a core material according to general formula Li1+x1TM1−x1O2 wherein TM is a combination of Ni and at least one of Mn, Co and Al, and, optionally, at least one more metal selected from Mg, Ti, Zr, Nb, Ta, and W, and x1 is in the range of from −0.05 to 0.2, and (B) particles of cobalt compound(s) and of aluminum compound(s) and of titanium compound(s) or zirconium compound(s) wherein the molar ratio of lithium to cobalt in said particles is in the range of from zero to below 1 and wherein said particles are attached to the surface of the core material.

The application belongs to the technical field of semiconductors, and particularly relates to a zirconium compound, a precursor composition containing the same, and a preparation method and application thereof. The zirconium compound has a chemical formula as shown in formula 1, wherein R1, R2 and R3 are each independently selected from one of methyl, ethyl, propyl or butyl. The zirconium compound with a specific structure is synthesized through molecular design, the molecular structure of the zirconium compound contains a phosphinyl pyrrole substituent and an alkyl substituent, the thermal stability and low-temperature reactivity of the zirconium compound are improved, uniform film formation is facilitated, and the purity of the film is higher. Meanwhile, the alkyl substituent can maintain good volatility of the zirconium compound, and is conducive to industrial production.

The invention discloses a low-temperature energy-saving type potassium zirconium carbonate water repellent agent and a preparation method thereof, and belongs to the technical field of inorganic water repellent agents. Effective components of the zirconium-based composite material are prepared from a zirconium compound, an organic hydroxy carboxylic acid modifier, alkali metal hydroxide, a carbonate donor, nano zirconium oxide sol and a low-temperature reaction accelerant through reaction. The preparation method mainly comprises the steps of preparation of an organic zirconium complex precursor solution, alkalization and carbonation reaction, nano compounding and synergism, and curing post-treatment. According to the water-resistant agent, through an organic-inorganic composite modification technology, reaction activation energy is remarkably reduced, so that the water-resistant agent can achieve an excellent water-resistant effect at a lower temperature, and meanwhile, good storage stability and application adaptability are kept.

This invention belongs to the field of ceramic materials technology, specifically relating to a Zr / Si multiphase ceramic precursor based on a zirconium source with active alkenyl side groups and its preparation method. The method includes: reacting zirconium n-propoxide with an unsaturated carboxylic acid in a solution system to obtain an organozirconium monomer with unsaturated carboxylic acid and hydroxyl side groups; subjecting the monomer to dehydration condensation under acidic conditions to obtain an organozirconium compound, which serves as the zirconium source in the multiphase ceramic precursor; and mixing the zirconium source with vinyl hydrogenated polycarbosilane (VHPCS) and vinyl hydrogenated polysiloxane (VHPSO) in solution to obtain the Zr / Si multiphase ceramic precursor. The Zr / Si multiphase ceramic precursor preparation process of this invention is simple, has good solubility, a flexible and adjustable zirconium-silicon ratio, and high curing and ceramic yield, meeting the performance requirements of aerospace materials.

Provided are an addition-curable liquid silicone rubber composition having exceptional adhesiveness and adhesive durability in a silicone rubber coating layer with respect to an airbag fabric, and an airbag.An addition-curable liquid silicone rubber composition for airbags having, as essential components:(A) an organopolysiloxane having a weight-average degree of polymerization of 100-2,000 and containing two or more silicon-atom-bonded alkenyl groups per molecule;(B) an organohydrogenpolysiloxane containing at least two silicon-atom-bonded hydrogen atoms per molecule;(C) a silica fine powder having a BET specific surface area of 50 m2 / g or higher;(D) a catalyst for a hydrosilylation reaction;(E) an organic compound including at least one functional group selected from alkenyl groups, alkoxysilyl groups, and hydrosilyl groups, and at least one isocyanate group, per molecule; and(F) a condensation catalyst selected from organic titanium compounds, organic zirconium compounds, and organic aluminum compounds.

The application relates to the fields of seawater uranium extraction and new materials, and specifically provides a double-naphthyl anthracene compound, a synthesis method thereof, and application of the double-naphthyl anthracene compound in preparation of seawater uranium extraction MOF (30-Zr). The prepared double-naphthyl anthracene compound is 4-[10-(4-carboxy naphthalene-1-yl) anthracene-9-yl] naphthalene-1-methanoic acid (H2NAN), the H2NAN is used as a ligand, a zirconium-containing compound is used in a one-pot method, and the MOF (30-Zr) with super-high stability is synthesized, the material stability is ensured, the material has very high uranium adsorption capacity, and a new direction is provided for the MOF used as a seawater uranium extraction material.

A zirconium conversion coating solution may comprise an aqueous solution; non-fluoride containing zirconium compound; sulfuric acid; and an organic acid. A method of coating a substrate may comprise exposing the substrate to the zirconium conversion coating solution to form a coated substrate.

The application relates to the field of ceramic materials, and discloses a preparation method and application of micron Y-Ca co-doped zirconia ceramic microspheres. The preparation method comprises the following steps: S1: dissolving a zirconium-containing compound and a yttrium-containing compound in water to obtain an aqueous phase A; dissolving a calcium-containing compound in water to obtain an aqueous phase B; S2: preparing an oil phase; S3: adding the aqueous phase A into the oil phase and stirring to obtain an emulsion; S4: adding urea and hexamethylenetetramine into the emulsion and stirring to obtain gel microspheres; S5: washing, centrifuging and drying the gel microspheres, immersing the gel microspheres in the aqueous phase B, and evaporating water under reduced pressure to obtain gel microspheres loaded with the calcium-containing compound; and S6: low-temperature pre-burning and high-temperature sintering to obtain micron Y-Ca co-doped zirconia ceramic microspheres. The micron Y-Ca co-doped zirconia ceramic microspheres prepared by the application are excellent in compactness, mechanical properties and thermal stability, and controllable in morphology and uniform in size distribution.

The application belongs to the technical field of radiochemistry, and particularly relates to a novel molybdenum-99 adsorption material and a preparation method thereof. A metal composite adsorption material is obtained through the steps of washing, filtering, drying and calcining, by taking a zirconium-containing compound and lye as starting materials and introducing ionic liquid in the preparation process to assist synthesis. 99 Mo- 99m Tc generator.

The present application relates to the field of silicon carbide crystal growth, and particularly relates to a preparation method and application of a graphite substrate coating for silicon carbide crystal growth, the method comprising the following steps: coating a colloid containing carbon fibers and a binder on the surface of a graphite substrate, forming a porous carbon skeleton precursor anchored to the graphite substrate through solidification and low-temperature sintering, laying a coating raw material containing a zirconium-containing compound and a carbon source on the porous carbon skeleton precursor, and generating a composite coating mainly composed of zirconium carbide on the surface of the graphite substrate after high-temperature sintering. The method provided in the present application realizes firm combination of the coating and the substrate at the micro level by constructing a porous carbon skeleton precursor anchored to the graphite substrate and guiding subsequent in-situ reaction, thereby successfully solving the industry problem that the coating adhesion, thickness and thermal stability are difficult to be considered simultaneously.

The application discloses a kind of chiral bridged metallocene compounds containing sulfur, which is described as the compound of general formula (I): Wherein, R1 is selected from one of 4-substituted phenyl, 2-naphthyl;R2, R3 is selected from alkyl;M is selected from one of TI, Zr, Hf;X is selected from halogen.The application also discloses the preparation and application of the chiral bridged metallocene compounds containing sulfur.Using this method to synthesize metallocene compounds shares intermediate, avoids some dangerous and harmful reagents in the reaction process, and is more suitable for scale-up production.

A zirconium conversion coating solution may comprise an aqueous solution; non-fluoride containing zirconium compound; sulfuric acid; and an organic acid. A method of coating a substrate may comprise exposing the substrate to the zirconium conversion coating solution to form a coated substrate.