| 摘要 |
PURPOSE: To increase space-time yield by dissolving ferrite formation metal ion salt into its water of crystallization and then adding the mixture to a water- based alkali liquid and performing autoclave treatment. CONSTITUTION: For example, 3.46mol Fe(No3 )3 .9H2 O, 0.305mol SnCl4 .5H2 O, 0.305mol Co(No3 )2 .6H2 O, and 0.41mol Ba(OH)2 .8H2 O are heated, and dissolved at 50 deg.C. Then, the melted body is agitated and added into a solution, in which 19.5mol NaOH is dissolved into 2037ml water, at 10 deg.C. Then, the suspension liquid is heated in a non-agitated autoclave at 250 deg.C for five hours, is held for five hours, and then is cooled, filtered, washed, dried, and heated at 800 deg.C for 1 hour, thus achieving a 7.5g/l/h space-time yield. |
