The Research Of Synthesis Of Glyphosate By Catalytic Oxidizing PMIDA And Elimination Of Formaldehyde In The Liquor

Glyphosate is an efficient, broad spectrum and toxicity, non-selective herbicide after bud. As one of the extensive weed killer, glyphosate is one of the biggest global output agriculturte chemical. Aim to solve the problems enterprises producting glyphosate face to, This paper will research the synthesis of glyphosate by using N-Phosphono methyl aminodiacetic acid and to remove formaldehyde from glyphosate liquor.This experiment mianly researched the synthesis of glyphosate by N-Phosphono methyl aminodiacetic acid, got appropriate conditions and improve the percent conversion of PMIDA and the selectivity of PMG. Then, modified the property of catalyst, and improved the percent conversion of PMIDA and the selectivity of PMG more. At the best condition, percent conversion of PMIDA reached to 100%, simultaneously the selectivity of PMG reached to more than 95%. At last, analyzed the characterization of catalysts.This experiment removed formaldehyde from glyphosate liquor by electrodes- electrical Fenton method. Investigated the impacts on the removal offormaldehyde from glyphosate liquor of all the factors (Including electrolytic reaction time?electric current density?electrolytic content?pH and the distance between two polars). Then, got the best experimentalconditions that is electrolytic reaction time of 120min?electric current density of 0.9A? electrolytic content of 05.%?pH3 and the distance between two polars 2cm. At the best experimental conditions, the removal rate of glyphosate reached to 81.6%. When catalytical eletrodes take place of stainless steel eletrodes, the removal rate of glyphosate reached to 85.7%?...