Method for producing multinary metal oxide powders in a pulsed reactor
AssigneeMerck Patent GmbH
InventorsStefan Remke, Bernd Mueller, Guenter Riedel, Stefan Ambrosius, Bernd Dahm
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Abstract
The invention relates to a method for producing a one-part, multinary metal oxide power which is suitable for producing high-temperature superconductors. To this end, a mixture of the corresponding metal salts and/or metal oxides and/or metals in the requisite stoichiometric ratio is introduced into a pulsed reactor with a pulsed gas flow resulting from flameless combustion and is partially or completely converted into the multinary metal oxide.
Claims16
A method for producing a finely divided, multinary metal oxide powder, said method comprising introducing a mixture comprising corresponding metal salts, metal oxides, and/or metals in the form of a solid, solution, or suspension in the requisite stoichiometric ratio of at least three elements which are Cu, Bi, Pb, Y, Tl, Hg, La, lanthanides, or alkaline earth metals directly into a combustion chamber of a pulsed reactor or into a pulsed reactor resonance tube that is connected to the combustion chamber, with sufficient turbulence to result in a homogeneous distribution of temperature and mixture so as to produce the multinary metal oxide in one single step.
A method for the production of high-temperature superconductors, comprising introducing a mixture comprising metal salts, metal oxides, and/or metals in the form of a solid, solution, or suspension in the requisite stoichiometric ratio of at least three elements which are Cu, Bi, Pb, Y, Tl, Hg, La, lanthanides, or alkaline earth metals into a pulsed reactor with sufficient turbulence to result in a homogeneous distribution of temperature and mixture so as to produce multinary metal oxide in one single step and pressing, extruding and/or sintering, so as to form said superconductor.
Dependencies are inferred from the claim text.