Preparation method of phenoxyacetate

The invention provides a preparation method of phenoxyacetic acid ester, which comprises the following steps: taking a phenolic compound and a chloracetate compound as raw materials, and reacting under the action of a catalyst loaded with an active component to obtain phenoxyacetic acid ester, the active component is selected from a metal compound; a carrier of the catalyst is selected from a non-metal compound. According to the invention, the catalyst is loaded on the solid activated carbon, and the direct reaction of the chloroacetate and the phenolic compound is realized by adopting a small amount of solid catalyst and a fixed bed reactor, so that a large amount of various mixed solid catalysts are not needed, other loading alkali is not needed to be added, and a large amount of condensing agent is not needed to be added; in the process, no solid catalyst separation problem exists, no wastewater or waste salt is generated, and continuous operation of the process is achieved. And the adopted catalyst is che