CAS: 13990-54-0; Yttrium(Iii) Phosphate

专利信息

专利号:US-5021397-A
优先权日:1987-12-23
标题 :Synthesis of ceramic superconductor CPO from xenotyme
发明人：VELLEGO GENI; FILIPINI CESAR A; FILHO PEDRO I P; CANEVAROLO JR SEBASTIAO V; SERRA OSWALDO A
权利人:PIRELLI BRASIL; FUNDACAO UNIVERSIDADE SAO CARL
摘要:A process for the preparation of a superconductor of the type AB 2 Cu 3 O 7-x , wherein A is a mixture of rare earths, B is an alkaline earth metal and x is less than one, comprising the treatment of xenotime to obtain a rare earths oxide therefrom and mixing the oxide with an alkaline earth metal compound and a copper compound and heat treating the mixture to obtain the superconductor. The treatment of the xenotime comprising melting the xenotime with a 1:1 mixture of Na 3 CO 3 and K 2 CO 3 , dissolving a solid obtained therefrom in HCl, treating the resulting solution with NH 4 OH to precipitate the rare earths, dissolving the precipitate in HCl, treating the resulting solution with H 2 C 2 O 4 to precipitate the rare earths aned calcinating the precipitate to obtain a rare earths oxide.

专利号:US-8425871-B2
优先权日:2006-06-05
标 题 :Single phase yttrium phosphate having the xenotime crystal structure and method for its synthesis
发明人：GRAY SANDRA LEE; WITHAM RICHARD DONALD
权利人:GRAY SANDRA LEE; WITHAM RICHARD DONALD; CORNING INC
摘要:Methods for producing substantially single phase yttrium phosphate which exhibits the xenotime crystal structure are disclosed. The methods can be practiced without the use of high temperatures (e.g., the methods can be practiced at temperatures less than 1000° C.). The resulting yttrium phosphate can be in the form of particles which comprise interwoven strands of crystals of yttrium phosphate and/or nanoparticles prepared from such particles.

专利号:US-7959885-B2
优先权日:2008-02-15
标 题:Nanoparticle synthesis by solvothermal process
发明人：LI SHENG; FROEHLICH JESSE DAN; NAKAMURA TOSHITAKA; MOCHIZUKI AMANE
权利人:NITTO DENKO CORP
摘要:A solvothermal process for making inorganic nanoparticles is described. Inorganic nanoparticles can be produced by forming a suspension or solution comprising at least one group II-IV and lanthanide metal inorganic salt in a first medium, disposing the suspension or solution in a sealed chamber having an interior pressure, elevating the interior pressure of the sealed chamber to an initial interior pressure prior to the heating, heating the suspension or solution to a peak temperature higher than the normal boiling point of the first medium, optionally adding a second medium to the suspension or solution after the heating.

专利号:US-9651496-B2
优先权日:2004-10-22
标 题:Rare earth downconverting phosphor compositions for optically encoding objects and methods and apparatus relating to same
发明人：HAUSHALTER ROBERT W; HAUSHALTER ROBERT C
权利人:PARALLEL SYNTHESIS TECH
摘要:A rare earth (RE) downconverting phosphor composition may contain two or more lanthanide materials each having a host and at least one downconverting emitter. Each lanthanide material emits a detectable electromagnetic radiation emission peak at an intensity, which is proportional to the amount of emitter present, upon excitation with an absorbable electromagnetic radiation, the emitted radiation having a lower energy, i.e., a longer wavelength than the absorbable radiation. One or more ratios of the intensities of the emitted detectable electromagnetic radiation may be used to uniquely identify the composition. Alternatively, the RE downconverting phosphor composition may contain a lanthanide material having a host and at least two emitters. The lanthanide material emits at least two different detectable electromagnetic radiation emission peaks each at an intensity upon excitation with an absorbable electromagnetic radiation, the emitted radiation having a lower energy, i.e., a longer wavelength than the absorbable radiation.

专利号:EP-0464965-A2
优先权日:1987-12-23
标 题 :Synthesis of superconductors from xenotyme

专利号:EP-0464965-B1
优先权日:1987-12-23
标 题 :Synthesis of superconductors from xenotyme