Catalyst for synthesizing glyphosate and method for synthesizing glyphosate by using same

Abstract

The invention provides a catalyst for synthesizing glyphosate. The catalyst is an active carbon catalyst, wherein the specific surface area is 700 to 900 m<2> / g, the methylene blue adsorption value is more than 158mg.g, the iodine adsorption value is more than 749mg.g, the phenol adsorption value is more than 179.5mg.g. The invention also provides a method for synthesizing the glyphosate by usingthe catalyst. The catalyst can reduce the generation of formic acid in the glyphosate synthesis process so as to reduce the generation of glyphosate impurities and improve the synthesis yield of the glyphosate, and the synthesis process of the glyphosate has the advantages of energy consumption reduction, environmental friendliness, production cost reduction and the like.

Description

technical field

[0001] The invention relates to a catalyst, in particular to a catalyst for synthesizing glyphosate and a method for synthesizing glyphosate using the catalyst. Background technique

[0002] Glyphosate is a systemic herbicide that is highly destructive to the underground tissues of perennial weeds, but it loses its activity when it enters the soil. It has no adverse effects on crop growth when it is planted on the same day after the application. Therefore, it is widely used in tea gardens, mulberry gardens, orchards, fallow fields, wheat, rapeseed and other no-tillage fields for weeding before sowing, and for directional spraying between rows in corn and cotton fields to control almost all annual or perennial weeds.

[0003] At present, there are many techniques for preparing glyphosate, mainly glycine method and IDA method. At present, the IDA method has gradually become the trend of future development.

[0004] The main steps of synthesizing glyphosate by...