| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention can be used to obtain montmorillonite clay having high exchange capacity. The starting material, which is montmorillonite clay, is first treated with a 10% sulphuric acid solution, washed with distilled water and dried at 20-500C. The acid-treated montmorillonite clay then reacts with a modifying agent - lithium hydroxide in molar ratio clay: modifying agent: water equal to 1:(0.09-0.36):3.6, respectively, at 80-100C for 5-7 hours. The modified clay is then dried at 20-200C. ^ EFFECT: invention cuts on treatment time and amount of lithium hydroxide used, considerably increases sorption capacity of clay with respect to Cu2+ and Fe3+ ions. ^ 3 cl, 2 tbl, 3 ex |
