Reaktion #670920

Reaktionsgleichung

behenic acid

water

NaOH

→

sodium behenate

Lösungsmittel

tert-butanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONwere mixed
2. 2
   Sonstigereacted at 75° C.

Vorschrift

87.6 kg of behenic acid (trade name: EDENOR C22-85JP GW) manufactured by COGNIS DEUTSCHLAND GmbH, 423 L of distilled water, 49.2 L of an aqueous NaOH solution of a concentration of 5 mol/L and 120 L of tert-butanol were mixed and then reacted at 75° C. with stirring for one hour to obtain a sodium behenate solution. Separately, 206.2 L of an aqueous solution (pH 4.0) of 40.4 kg of silver nitrate was prepared and maintained at 10° C. A reaction vessel containing 635 L of distilled water and 30 L of tert-butanol was maintained at 30° C. and the total volume of aforementioned sodium behenate solution and the whole volume of aforementioned aqueous silver nitrate solution were added while stirring sufficiently over 93 minutes and 15 seconds and 90 minutes, respectively. At this time, only the aqueous silver nitrate solution was added during 11 minutes after the beginning of the aqueous silver nitrate solution, and then the addition of the sodium behenate solution was started. During 14 minutes and 15 seconds after the completion of the addition of the aqueous silver nitrate solution, only the sodium behenate solution was added. At this time, the temperature in the reaction vessel was controlled to 30° C. and the outside temperature was controlled so that the liquid temperature is fixed. Piping of the addition system of the sodium behenate solution was kept warm by circulating warm water around the outside of a double tube and the liquid temperature of an outlet of an addition nozzle tip was controlled to 75° C. Piping of the addition system of the aqueous silver nitrate solution was kept warm by circulating cold water around the outside of the double tube. The addition position of the sodium behenate solution and the addition point of the aqueous silver nitrate solution were made symmetric with respect to a stirring axis as a center and the height was controlled so as not to contact with the reaction solution.

Quelle