Production method for preparing methyl glyoxylate through selective catalysis of methyl glycolate

Abstract

The invention discloses a production method for preparing methyl glyoxylate through selective catalysis of methyl glycolate, and particularly relates to the field of preparation of chemical materials. The method comprises the specific production steps as follows: step 1, preparation of a catalyst: (1) firstly dissolving active components in deionized water in proportion to prepare a mother solution, and adjusting the pH value to 8-10 under a stirring condition to prepare the mother solution; (2) adding the carrier into the mother solution obtained in the step (1) under the condition of stirring, and continuously stirring at 60-80 DEG C for 2-8 hours; and (3) washing and filtering the product obtained in the step (2), keeping out of light, carrying out vacuum drying and filtering, and roasting in nitrogen or air at 300-600 DEG C for 3-6 hours to obtain the catalyst; and 2, catalytic reaction. According to the method, Au, Pd and Pt are used as active components, TiO2, SiO2 and ZrO2 are used as carriers to prepare the catalyst to produce the methyl glyoxylate; the reaction is carried out under the mild condition of oxygen or air, the conversion rate of the methyl glyoxylate is high, the selectivity of the methyl glyoxylate is high, the method is green and environmentally friendly, and the catalyst is easy to separate and good in reusability.

Description

Technical field [0001] Embodiments of the present invention relate to the manufacture of chemical materials, and more particularly to a method of producing methyl aracetoxylate selective catalytic catalyzoate. Background technique [0002] During the coal-based synthesis of gas-made ethylene glycol, as an efficient use of methoxide as a by-product, it is important to improve the process efficiency of synthetic gas-made ethylene glycol and reduce the production cost of glyoxylic acid. Currently, an important way to the application of methoxide is to convert it to downstream chemicals such as methanolic acid, methyl malonate, glycine and acetanlate, which is especially worthy of attention. . Because of the hydrolyzate of acetallate, the acetallic acid, widely used in the preparation of drugs, cosmetics, perfumes, and agricultural chemicals, and plays a very important role in chemical synthesis, it is a very important refined chemical product. [0003] Methyl ethanol is directly deh...

AI Technical Summary

Problems solved by technology

[0005] For this reason, the embodiment of the present invention provides a kind of production method of methyl glyoxylate selectively catalyzing methyl glyoxylate, by using nanometer Au, Pd, Pt as active component, simultaneously TiO 2 , SiO 2 , ZrO 2 As a carrier to prepare a catalyst to produce methyl glyoxylate to solve the problems in the prior art that are easily over-oxidized in the process of methyl glycolate and the catalyst has poor reusability

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