Acesulfame potassium composition

Abstract

The invention discloses an acesulfame potassium composition, which comprises acesulfame potassium and a chloride of acesulfame potassium, and the content of the chloride of acesulfame potassium is less than 300 ppm. The composition is prepared by the following method which comprises the steps: adding triethylamine into a sulfamic acid solution, and carrying out amination reaction to generate an ammonium sulfamic acid salt solution; adding diketene into the ammonium sulfamate solution, and carrying out acylation reaction under the action of a solid acidic catalyst to obtain an intermediate solution; carrying out sulfonation cyclization reaction on the intermediate solution and a cyclizing agent solution under the action of a supported solid alkali heterogeneous catalyst to obtain a sulfonation cyclization product; and executing a hydrolysis step and a salt formation step. The acesulfame potassium composition with extremely low impurity content can be prepared by combining the two catalysts, so that the post-treatment process of the acesulfame potassium is greatly reduced, and the production cost of the acesulfame potassium is reduced.

Description

technical field [0001] The invention belongs to the technical field of fine chemical manufacturing, and in particular relates to an acesulfame potassium composition. Background technique [0002] Acesulfame potassium (acesulfame potassium), also known as AK sugar, is a widely used sugar substitute food additive. Its appearance is white crystalline powder. As an organic synthetic salt, its taste is similar to sugarcane, and it is easily soluble in water. , Slightly soluble in alcohol, its chemical properties are stable, and it is not easy to break down and fail; it does not participate in the body's metabolism and does not provide energy; it has high sweetness and low price; it has no cariogenicity; it has good stability to heat and acid. [0003] At present, in the synthesis of acesulfame potassium, the diketene-sulfur trioxide method is widely used. The specific reaction steps include: reacting sulfamic acid with amine to form amine sulfamic acid salt, and then reacting ami...

AI Technical Summary

Problems solved by technology

However, these technologies still cannot effectively improve the conversion rate of the reaction, and at the same time cannot solve the problem that the product (ASH) obtained after hydrolysis of the cyclization and cyclization product has many impurities

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