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Anonymous users2024-02-10Transesterification: A reaction catalyzed by an acid or base to generate a new ester and a new alkyd.
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Anonymous users2024-02-09Correct Answer: Lipoxygenase.
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Anonymous users2024-02-08Reaction mechanism of transesterification reaction:Taking the preparation of fatty acid methyl ester by transesterification of triglycerides and methyl-deficient alcohol as an example, the reaction equation is as follows:
Oils and fats (triglycerides) first react with a methanol to form diglycerides and methyl esters, diglycerides and methanol continue to react to form monoglycerides and methyl esters, and monoglycerides react with methanol to form glycerol and methyl esters.
The esterification reaction is a reversible reaction, and there are a small amount of free alcohols and acids present in the solution of esters. The transesterification reaction is based on the reversibility of the esterification reaction. The alcohol in the transesterification reaction can be esterified with a small amount of free acid in the ester solution, and the new esterification reaction generates new esters and new alcohols.
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Anonymous users2024-02-07Summary. The reason why it is called transesterification hydrogenation reaction is because of the transesterification reaction itself, that is, the ester is catalyzed by acid or alkali to generate a new ester and a new alkyd.
The reason why it is called transesterification hydrogenation reaction is because the transesterification reaction in itself is that the ester is formed under the achimation of acid or alkali under the actuation of acid or alkali.
What does hydrogenation do.
The alcohol in the transesterification reaction can be combined with the free acid in the solution, so it is equivalent to hydrogen replacing the position of the original ester group, which is also called hydrogenation reaction.
The transesterification reaction is carried out into new esters and alcohols replace the original ester group.
What I described earlier was not very accurate, and I will describe it again.
First of all, transesterification hydrogenation reactions, such as the reaction of acetic acid and ethanol to produce ethyl acetate and water, use the reaction mechanism of addition and elimination, and ethyl acetate is more hydrogenous than the previous reactants.
Transesterification reaction is the formation of a new ester and a new alkyd ester under the catalysis of an acid or base.
In the solution of esters, there are small amounts of free alcohols and acids. The transesterification reaction is based on the reversibility of the esterification reaction.
Because the hydrogen ions in the solution are used, there is more hydrogen in the product, so it is also called transesterification hydrogenation reaction.
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Anonymous users2024-02-06Transesterification can be done with sulfuric acid, tetrabutyl titanate, solid acid catalysts, etc.
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Anonymous users2024-02-05Transesterification: A reaction catalyzed by an acid or base to generate a new ester and a new alkyd.
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Anonymous users2024-02-04Transesterification: A reaction catalyzed by an acid or base to generate a new ester and a new alkyd.
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