35 results about "Erbium(III) oxide" patented technology

The invention relates to a preparation method for a rare-earth erbium alloy and the rare-earth erbium alloy. The preparation method is characterized in that a graphite block is taken as an anode, a molybdenum rod is taken as an inert cathode, a molybdenum or tungsten crucible is taken as a metal acceptor, a mixture of rare earth oxide and erbium oxide is added into a fluoride molten salt electrolyte system consisting of rare earth fluoride, erbium fluoride and lithium fluoride, and direct-current is input for electrolyzing the mixture to obtain the rare-earth erbium alloy, wherein a mass ratio of components in the fluoride molten salt electrolyte system is as follows: rare earth fluoride: erbium fluoride: lithium fluoride being (92-75) to (5-15) to (3-10); the mixture of rare earth oxide is added, and the use of the mixture is that a ratio of the rare earth oxide to the erbium oxide is (99-80) to (1-20); and an electrolysis temperature is 1030-1100 DEG C. The preparation method has the advantages that the rare-earth erbium alloy is prepared by electrolyzing the mixed oxide through a simple fluoride electrolyte system; the process is simple; the cost is low; the product components are stable; only CO2 and a little CO are generated in the process; the pollution to the environment is small; and the preparation method belongs to the green environment-friendly process, and is suitable for large-scale production.

The invention discloses a preparation method of a flower-ball-shaped ErBO3 photocatalyst composed of multiple lamellar petals, which adopts a hydrothermal method to synthesize ErBO3 powder, and comprises the following steps of S1, slowly adding an HNO3 solution into erbium oxide, and heating and stirring until the erbium oxide is completely dissolved to obtain a solution A, S2, mixing and heatingboric acid and water to obtain a solution B, S3, mixing and heating the solution A and the solution B to obtain a solution C, and slowly adding an alkaline solution into the cooled solution C until the solution C is weakly alkaline, and S4, heating the weakly alkaline solution C to react, separating the precipitate in the solution C from the clear liquid, and drying to obtain the flower-ball-shaped ErBO3 photocatalyst composed of multiple lamellar petals.