METHOD FOR PREPARING METHYL BROMIDE, ACETYL BROMIDE, ACETIC ACID AND ACETATE FROM METHANE

摘要

The present invention discloses a method for preparing alkyl bromide by brominating-oxidizing methane, and a method for further preparing acetyl bromide, acetic acid and acetate from alkyl bromide. Firstly, methane reacts with HBr/H2O and oxygen to produce alkyl bromide and CO, wherein the catalyst used is a composite catalyst, prepared by means of mixing the water-soluble metal compound precursor and silicon precursor, hydrolyzing, drying and calcinating. Secondly, the alkyl bromide reacts with CO to produce acetyl bromide, and then acetyl bromide reacts with water to obtain acetic acid, or reacts with alcohol to obtain acetate.