3results about "Transuranic element compounds" patented technology

The invention relates to a process for preparing a powder comprising one or more oxides selected from uranium oxide UO2, plutonium oxide PuO2 and minor actinide oxides, the minor actinides being selected from americium, neptunium and curium, comprising the steps of: a) cryogenic granulation of an aqueous solution comprising cations selected from uranium-based cations, plutonium-based cations and minor actinide-based cations; b) freeze-drying of the granules obtained in a); etc.; calcination of the granules from b). Applications: manufacture of nuclear fuels or blankets loaded with minor actinide(s).

The present invention relates to a material comprising porous microspheres based on actinide oxides, obtained by an internal gelation method. The present invention also relates to the use of this material as a sintering additive in the production of nuclear fuel, particularly in the production of MOX (mixed oxide) type nuclear fuel pellets, and more specifically as a pore-forming agent to replace conventionally used pore-forming agents in said production, namely azodicarbonamides.

A solid electrolyte having high electrical conductivity even in a low-temperature region is provided. A solid electrolyte containing a hexagonal perovskite-related compound, in which the compound is a compound represented by the following general formula (1), and an electrolyte layer and a battery using the solid electrolyte are disclosed. Ba7-αNb(4−x−y)Mo(1+x)MyO(20+z) (1), in the formula (1), M is a cation of at least one element; a represents a Ba deficiency amount and represents a value of 0 or more and 0.5 or less, x represents a value of −1.1 or more and 1.1 or less, y represents a value of 0 or more and 1.1 or less, and z represents an oxygen non-stoichiometry and represents a value of −2.0 or more and 2.0 or less, provided that in the formula (1), |x|+y≥0.01 is satisfied.