Preparation method of glycerol metal complex
A technology of metal complexes and glycerin, which is applied in the preparation of metal alcohols, organic chemistry, etc., can solve the problems that magnesium glycerol cannot be used, and achieve the effects of avoiding pollution, mild reaction conditions, and easy operation
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[0027] The present invention provides a method for preparing a glycerol metal complex in one embodiment, comprising the following steps:
[0028] Mix metal oxide and glycerin, add organic tin catalyst under vacuum condition, and react at 100°C-180°C for 3h-8h to obtain glycerin metal complex.
[0029] The preparation method of the glycerol metal complex adopts a one-pot synthetic method, mixing metal oxides and glycerin to form a uniform, slurry-like solid-liquid mixture, and then combining it under vacuum conditions in the presence of a specific catalyst such as an organotin catalyst. Under the action, the metal oxide and glycerol can react at a lower temperature to prepare the glycerin metal complex. The preparation method can be used to prepare glycerol metal complexes such as zinc glycerol, calcium glycerol and magnesium glycerol, and is particularly suitable for the production of glycerol magnesium. The production of magnesium glycerol is seldom reported, and the method ...
Embodiment 1
[0058] At 50°C, mix and stir 40g of magnesium oxide and 193g of glycerin until it becomes a uniform, slurry-like solid-liquid mixture; then add 0.233g of dibutyltin dilaurate, which is 0.1% of the sum of the mass of the substrate, continue to mix evenly, and The temperature was heated to 100°C, the reaction time was 8 hours, and the vacuum pump assisted water extraction to obtain solid magnesium diglyceride, which was cooled to room temperature. Mix the product with ethanol solvent, perform suction filtration, continue to wash with ethanol for 2 to 3 times, and dry at 50° C. for 5 to 24 hours to obtain 175.4 g of white pure solid magnesium diglycerol powder with a yield of 85.04%.
[0059] Utilize ICP to carry out elemental analysis independently to the Mg element in the product, the result that measures is: Mg% (that is, the mass content of magnesium atom)=17.35%, the theoretical Mg% of diglycerol magnesium is 17.86%, and difference is little, in Within the allowable ±2% devi...
Embodiment 2
[0064] It is basically the same as Example 1, the difference is that the ratio of magnesium oxide to glycerol is 1:2.25, and the solid magnesium diglycerol is obtained after the reaction. When the ethanol solvent is miscible, it is particularly easy, and there is no wall hanging phenomenon. 178.87 g of white pure solid magnesium diglycerol powder was obtained with a yield of 86.83%.
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