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Abstract

The present application provides a preparation method for trimethyl aluminum, comprising the steps of: reacting methyl aluminum dichloride or sesquimethyl aluminium chloride or dimethyl aluminum chloride with a system of metal M and methyl chloride in the presence of catalyst and solvent to produce trimethyl aluminum and chloride of metal M; wherein the catalyst is selected from metals or their ions which rank after metallic aluminum in the electrochemical series; the metal M is selected from alkali metals, alkaline earth metals or combinations thereof. The catalyst can significantly increase the reaction rate, thus allowing the reaction to be operated under very simple experimental conditions such as near atmospheric pressure, with higher reaction yields and higher purity of the products, and without by-products of aluminum metal and unreacted alkali or alkaline earth metals in products, making the handling of the products easier.

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First Claim