反应 #2314315

反应方程式

behenic acid

water

NaOH

→

sodium behenate

溶剂

tert-butanol

反应条件

后处理

1. 1
   其他to react at 75° C. for 1 hour

实验过程

87.6 kg of behenic acid (Edenor C22-85R manufactured by Henkel Co.), 423 L of distilled water, 49.2 L of an aqueous solution of NaOH in the Concentration of 5 mol/L and 120 L of tert-butanol were mixed, and the mixture was allowed to react at 75° C. for 1 hour, thereby a sodium behenate solution was obtained. Apart from the sodium behenate solution, 206.2 L (pH 4.0) of an aqueous solution containing 40.4 kg of silver nitrate was prepared and maintained at 10° C. A reaction vessel charged with 635 L of distilled water and 30 L of tert-butanol was maintained at 30° C. The entire amount of the foregoing sodium behenate solution and the entire amount of the foregoing silver nitrate aqueous solution were added to the content in the reaction vessel at a constant flow rate during 93 minutes 15 seconds and during 90 minutes respectively with sufficient stirring. At that time, the silver nitrate aqueous solution was solely added during 11 minutes since the addition start of the silver nitrate aqueous solution. After that, the addition of the sodium behenate solution was started. During 14 minutes 15 seconds after the addition completion of the silver nitrate aqueous solution, the sodium behenate solution was solely added. The temperature within the reaction vessel was set at 30° C. and the solution temperature was maintained constant by means of an external temperature control. Further, the piping of the addition system for the sodium behenate solution was warmed by circulating warm water in the outer jacket of a double-walled tube so that the solution temperature at the outlet of the addition nozzle tip was adjusted to be 75° C. The piping of the addition system of the aqueous silver nitrate solution was also heat-controlled by circulating cold water in the outer jacket of a double-walled tube. The positions where the sodium behenate solution and the aqueous silver nitrate solution were added were arranged symmetrically in relation to the stirring axle in the center, and the height of the position was adjusted so as not to touch the reaction solution.

来源