Lauryl alcohol (also known as dodecanol), originally derived from laurel bark It is named after being extracted from it. It has the chemical reactivity of higher primary alcohols. Virtually non-toxic. It is understood that lauryl alcohol has a wide range of uses across various industries. However, lauryl alcohol should avoid contact with oxidants, acids, acidic chlorides, and acid anhydrides.
Preparation and purification method of lauryl alcohol:
1. Use coconut oil as raw material, under the action of copper-chromium catalyst, at high temperature (300℃ ) and high pressure (30MPa), continuous catalytic hydrogenation to produce mixed fatty alcohols, distillation under normal pressure, removal of water and low boiling point fractions, and then distillation under reduced pressure to produce lauryl alcohol.
2. Lauryl alcohol can also be produced by reducing the ester of lauric acid under the action of metallic sodium and absolute ethanol.
3. Using lauric acid as raw material, lauryl alcohol is prepared through hydrogenation and reduction.
4. Using ethyl laurate as raw material, lauryl alcohol is prepared through hydrogenation and reduction reaction.
5. A method for purifying lauryl alcohol, including the following steps:
1) Add lauryl alcohol (raw material) and toluene to the reaction according to a weight ratio of 1: (0.5-2) Container, slowly heat up to the reflux state, control the temperature to keep the mixture in an azeotropic state, and collect the distillation product under reduced pressure;
2) Place the distillation product at a temperature of 100°C-110°C and a controlled pressure of ≤-0.09Mpa Distill until no liquid (toluene) flows out;
3) Then gradually raise the temperature to 150℃-160℃ and continue distillation for 2-8 hours at a pressure ≤-0.09Mp , the remaining product is obtained, which is lauryl alcohol.
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