Method for the manufacture of N-phosphonomethylglycine from N-phosphonomethyliminodiacetic acid using a catalytic carbon
AssigneeCalgon Carbon Corporation
InventorsRichard A. Hayden, Thomas M. Matviya
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Abstract
An improved process is provided for the manufacture of N-phosphonomethylglycine from N-phophonomethyliminodiacetic acid in the presence of a molecular-oxygen containing gas utilizing a catalytically active carbonaceous char. The improvement is provided by the use of a carbonaceous char capable of rapidly decomposing hydrogen peroxide in an aqueous solution.
Claims6
The process for the production of N-phosphonomethyl glycine (glyphosphate) which comprises contacting an aqueous solution of N-phosphonomethyliminodiacetic acid with a gas containing molecular oxygen at an elevated temperature to initiate and sustain a reaction in the presence of a low temperature catalytically active carbonaceous char having a t-3/4 time less than about 15 minutes.
Dependencies are inferred from the claim text.