5 results about "Cerium phosphate" patented technology

This invention discloses a method for preparing high specific surface area cerium phosphate nanoparticles. The modified corn starch in this invention exhibits good water solubility, resulting in a solution with good suspension and stability after dissolving in water. This suspension stability provides a spatial carrier for the formation of cerium phosphate nanoparticles. A network structure is formed through hydrogen bonding between the molecular weight chains of the modified corn starch, allowing control over the uniformity of cerium phosphate particle size. Different specific surface area values ​​of cerium phosphate can be controlled by adjusting the concentration of the modified corn starch. The modified corn starch can be removed through subsequent high-temperature sintering and washing, ultimately yielding high-purity cerium phosphate nanoparticles. These nanoparticles possess uniformity and high specific surface area, making them suitable for applications in electrode materials, adsorbent materials, luminescent materials, and polymer nanofillers.

This invention provides a lithium cobalt oxide cathode material coated with a lithium aluminum titanium phosphate composite, which has a core-shell structure, comprising a doped lithium cobalt oxide core material inside the core-shell structure and a coating layer formed on the surface of the doped lithium cobalt oxide core material; the chemical formula of the doped lithium cobalt oxide core material is: LiCo 1‑a‑b‑c Mg a Al b Ce c The coating layer comprises lithium aluminum titanium phosphate, cerium titanate, lithium cerium phosphate oxide, and lithium cerium phosphate. This invention's lithium aluminum titanium phosphate composite coating modified lithium cobalt oxide cathode material overcomes the defect of a sharp performance drop under high temperature and high pressure applications when lithium aluminum titanium phosphate is coated alone. The oxygen vacancies and coating structure provided by the composite coating layer of lithium aluminum titanium phosphate, cerium titanate, lithium cerium phosphate oxide, and lithium cerium phosphate enhance the structural continuity between the bulk phase and the coating layer, as well as the conductivity of the fast ion conductor, thereby enabling the material to maintain good cycle retention and capacity characteristics under high temperature and high pressure.

This invention belongs to the field of special ceramics preparation technology, specifically relating to a high-temperature resistant special ceramic and its preparation method. The high-temperature resistant special ceramic, by weight, comprises the following raw materials: 22-24 parts calcined kaolin, 20-22 parts andalusite, 30-32 parts tabular corundum, 2.5-4.5 parts calcite, 1.3-2.3 parts cerium phosphate, 15-17 parts calcium zirconate, 3.7-4.7 parts yttrium oxide, 2-3 parts titanium diboride, and 1.2-2.2 parts gadolinium trioxide. The high-temperature resistant special ceramic of this invention uses tabular corundum, calcined kaolin, and andalusite as main raw materials, calcite and cerium phosphate as sintering aids, and calcium zirconate, yttrium oxide, titanium diboride, and gadolinium trioxide as fillers, ensuring that the prepared special ceramic exhibits excellent flexural strength and fracture toughness at high temperatures.

This invention provides a method for the deep treatment and resource utilization of polycarbonate brine. The method includes the following steps: preparing a modified support for PO / SM tar-coal slag; preparing a cobalt and / or cerium phosphate ester complex metal; dissolving the phosphate ester complex metal to obtain a solution; impregnating the modified support; drying; and calcining to obtain a catalytic oxidation catalyst. The catalyst comprises a support and an active component; the support is a modified support for the co-production of styrene (PO / SM) tar from propylene oxide, and the active component is the phosphate ester complex metal. The catalyst of this invention can effectively remove organic matter, reduce ion-exchange membrane voltage, and realize the resource utilization of waste brine.

The invention relates to the technical field of fiber preparation, in particular to an ultraviolet-proof flame-retardant fiber and a preparation method and application thereof.The ultraviolet-proof flame-retardant fiber is prepared from, by mass, 1.5-9% of flame-retardant cerium-magnesium-aluminum compound functional powder and the balance fiber forming polymer; the flame-retardant cerium-magnesium-aluminum compound functional powder is prepared from the following raw materials: cerium-magnesium-aluminum compound functional powder, an organic flame retardant and an organic solvent, the cerium-magnesium-aluminum compound functional powder is prepared by blending and calcining cerium dioxide, cerous phosphate and magnesium-aluminum hydrotalcite, can be used for preparing a fabric for a medical partition curtain, and solves the problems of insufficient ultraviolet protection capability, short service life, potential safety hazard of promoting fire behavior and the like of a common partition curtain in an extreme ultraviolet disinfection environment. And the practical application requirements are better met.