Otsuki, Akira published the artcileSeparation of rare earth fluorescent powders by two-liquid flotation using organic solvents, Computed Properties of 2016-56-0, the publication is Japanese Journal of Applied Physics (2008), 47(6), 5093-5099, database is CAplus.
We describe a method for separation of ultra-fine particles prior to recycling. The authors suggest a 2-step process for separating a mixture of 3 different rare earth fluorescent powders (i.e., red, green, and blue). Each step of the process is a 2-liquid flotation, which involves 2 organic solvents (i.e., a non-polar and a polar solvent, in order to create 2 different phases) and a surfactant to manipulate the wettability of the powders. In the 1st step, the green powder migrates toward a non-polar phase such as n-heptane and remains at the interface of 2 solvents. The remaining 2 components precipitate in the polar phase. In the 2nd step, the blue powder migrates toward a non-polar phase and remains at the interface of 2 solvents, while the red powder precipitates in the polar phase. After testing various non-polar solvents, a selection was made, and the operational parameters (e.g., concentration of surfactant and solid) were varied in order to maximize the efficiency of the process. The grade and recovery of each separated fluorescent powder were both >90%.
Japanese Journal of Applied Physics published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C14H31NO2, Computed Properties of 2016-56-0.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia