Preparation method of cyclohexene oxide

Abstract

A preparation method of cyclohexene oxide belongs to the technical field of preparation of fine chemicals. The preparation method includes using cyclohexene as substrate, using acetonitrile as reaction solvent, using 30wt% hydrogen peroxide as oxidant, using Ti-MCM-41 molecular sieve to carry phosphomolybdic manganese heteropolyacid sodium salt for alkene epoxidation reaction, rectifying reaction liquid after reaction, selecting fraction at 130-135 DEG C so as to obtain cyclohexene oxide. The catalyst Ti-MCM-41 is used as a carrier to carry the composite oxide, the cyclohexene oxide is obtained by catalytic synthesis, catalytic activity is high, and the catalyst is reusable. The hydrogen peroxide is used as an oxygen source, byproduct is water, and the chemical requirement for environmental friendliness is met. The reaction starts under normal pressure under mild conditions, and reactant and the byproduct water are easy to separate. Reaction energy consumption is low, the requirement for reaction devices is low, and the preparation method is suitable for large-scale industrial production.

Description

technical field The invention belongs to the technical field of preparation of fine chemical products, and specifically relates to a method for preparing epoxycyclohexane by heterogeneous catalytic reaction with mild reaction conditions, simple catalyst preparation and easy separation from reaction solution, convenient product post-treatment, and less environmental pollution. Background technique There are active epoxy groups in the molecular structure of 1,2-epoxycyclohexane. Under the action of acid or alkali catalyst, the ternary oxygen-containing ring is very easy to ring-open, and it can react with ammonia, amine, alcohol, phenol, carboxylic acid, Water and other substances react to form a high value-added compound. Therefore, epoxycyclohexane is an important organic intermediate, and its industrial applications include the synthesis of epoxy resin active diluents and new pesticides such as dexamethasone. Most of the main methods for producing epoxycyclohexane in earl...

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Problems solved by technology

However, the catalysts used have disadvantages such as complicated preparation process and high cost, which are not conducive to large-scale industrial application.

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