Sorbitol can be prepared by reducing glucose, and it is widely distributed in pears, peaches and apples, with a content of about 1% to 2%. Its sweetness is equivalent to glucose, but it can give people a strong feeling. It is slowly absorbed and utilized in the body, and the blood sugar level does not increase. It is also a good humectant and surfactant. What is the synthesis method of Sorbitol? Let's take you to find out.

1. Put the prepared 53% glucose aqueous solution into the autoclave, and add the nickel catalyst with 0.1% glucose weight. After the air is replaced, hydrogenation is carried out under the conditions of about 3.5MPa, 150°C and pH 8.2-8.4, and the end point is controlled to control the residual sugar below 0.5%. Sorbitol manufacturer tells you that after 5 minutes of precipitation, the obtained Sorbitol solution is purified by ion exchange resin. Raw material consumption quota: hydrochloric acid 19kg/t, liquid caustic soda 36kg/t, solid caustic 6kg/t, aluminum-nickel alloy powder 3kg/t, oral sugar 518kg/t, activated carbon 4kg/t.
2. The refined glucose obtained from starch saccharification is obtained by continuous or intermittent hydrogenation at medium pressure.
3. Add 53% glucose aqueous solution (previously adjusted with lye to pH=8.2～8.4) and 0.1% glucose mass nickel aluminum catalyst into the autoclave, exhaust the air and react, control the temperature at 150°C and the pressure at 3.5MPa:
Sorbitol manufacturer tells you that when the glucose content reaches 0.5% or less, the reaction will reach the end point. Set aside to settle and filter. The filtrate is refined with strongly acidic styrene cation exchange resin 001×7 and strongly basic ammonium type I anion exchange resin 201×7 to remove impurities such as nickel and iron to obtain the finished product D-sorbitol.
The above is the synthesis method of Sorbitol, I hope it will be helpful to everyone.