| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to chemical industry. A method of separating fullerenes includes dissolving fullerenes in o-xylene, high-temperature treatment of the obtained solution at 70-90°C for 60-120 minutes to obtain a Cconcentrate and a solution which is fed for low-temperature treatment at temperature of (-15) to (-25)°C for 10-30 hours. Separation is carried out in multiple steps to obtain at each n step Cand Cconcentrates with counterflow of the solutions and the solid phase from the high-temperature treatment. Several high-temperature treatment steps are carried out at each n step. At the first high-temperature treatment step of each n step, a solid extract of a fullerene mixture is fed and at the next steps, a solid phase from the previous high-temperature treatment step is fed. A solution from the first high-temperature treatment step is fed for low-temperature treatment to obtain a Cconcentrate and a solution which is fed to the last high-temperature treatment step. A solution from the next high-temperature treatment step is fed as a recycled solution to the previous step, and a solution from the second high-temperature treatment step is fed for mixing with the solid extract of the fullerene mixture of the next n>1 step. The Cconcentrate is the solid phase of the last high-temperature treatment step of each n step.EFFECT: low material consumption and simple process.2 cl, 2 dwg, 1 tbl, 2 ex |
