Mechanochemical synthesis of ammonium glyphosate preparation

Abstract

The invention provides a mechanochemical synthesis method of a glyphosate ammonium preparation. The mechanochemical synthesis method is characterized by comprising the following steps: putting glyphosate acid and ammonium carbonate with an equivalent proportion or an excessive proportion into grinding equipment for a grinding reaction; adding an auxiliary agent or a filling material during or after the reaction, wherein, the weight ratio of the glyphosate acid, the auxiliary agent and the filling material is 100:0-50:0-100; thus obtaining the glyphosate ammonium preparation. The mechanochemical synthesis method avoids the steps of adding the solvent, post-processing steps of the solvent and the like, has simpler process, and can achieve the purposes of reducing the energy consumption and improving the production efficiency.

Description

technical field [0001] The invention relates to an agricultural herbicide and a synthesis method thereof, in particular to a mechanochemical synthesis method of glyphosate ammonium salt preparation. technical background [0002] The mechanochemical method is to use the temperature and pressure generated by the high-intensity collision of the reactant powder during the grinding (such as through ball milling, etc.) to induce local and heterogeneous reactions. Or a method in which chemical reactions occur under the action of mechanical energy. Because there is no intervention of solvent molecules, the microenvironment of the reaction is different from the conventional solution system, the molecular arrangement of the reaction site is orderly, and the reaction selectivity is high. Since the concentration of the reactant can reach 100%, the reaction efficiency is significantly improved. Due to the development of nanomaterials science, mechanochemistry has been paid attention as ...

AI Technical Summary

Problems solved by technology

Although the whole process does not involve solvents, due to the simple mixing, glyphosate acid has not yet reacted with ammonium bicarbonate, so there is a potential danger of reaction and release of a large amount of carbon dioxide during storage, especially in large quantities.

There are hidden dangers in stability

[0009] In a word, there are many methods for synthesizing glyphosate ammonium salt, but there is no report on synthesizing glyphosate ammonium salt with mechanochemical method