Synthesis technology for preparing methylal by virtue of condensation of methyl alcohol and formaldehyde

Abstract

The invention relates to the field of a catalytic technology and in particular relates to a synthesis technology for preparing methylal by virtue of condensation of methyl alcohol and formaldehyde, and the synthesis technology comprises the operation steps of: adding the methyl alcohol into a four-mouth flask provided with a condenser, then adding formalin into the methyl alcohol and mixing; adding a solid iron system super strong acid catalyst into the mixed solution, and then adopting thermostatic waterbath to treat the mixed solution; and finally, stirring the mixed solution for reaction for half an hour until the reaction liquid is red brown. The high-efficiency synthesis technology for preparing the methylal by condensation of the methyl alcohol and the formaldehyde can be used for remarkably improving the synthesis yield of the methylal, so that the aim of reducing the production cost of the technology can be achieved.

Description

technical field [0001] The invention relates to the technical field of catalysis, in particular to a high-efficiency synthesis process for producing methylal by condensation of methanol and formaldehyde. Background technique [0002] Methylal, also known as dimethoxymethane, is mainly used to produce high-purity formaldehyde by oxidation. The preparation of high-purity formaldehyde is a key step in the production of polyoxymethylene resin with excellent performance. Methylal can also replace formaldehyde for condensation reactions, such as the reaction of phenol or diphenylamine compounds with methylal to generate diphenol methane or diphenylamine methane compounds. In recent years, with the continuous development and improvement of the preparation method and application technology of methylal, its use has been widely expanded, which has also made methylal products more and more valued by the academic and industrial circles, and is expected to be used in energy and the envir...

AI Technical Summary

Problems solved by technology

The synthesis process of methanol and formaldehyde condensation to produce methylal initially used sulfuric acid as a catalyst. With the deepening of catalyst research, strong acidic ion exchange resins were gradually used as catalysts for industrial synthesis of methylal. We found that strong acidic ion exchange resins catalyzed the synthesis of formaldehyde The methylal yield of acetal is low, which is not conducive to the transformation of energy saving and emission reduction of this process

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