Patent ID: 8697904
Filing Date: 2014-04-15
Classification: B01J,B82Y,C07C,C07F,Y02P

Abstract:
1. A process for the oxidation of N-(phosphonomethyl)iminodiacetic acid or a salt thereof, the process comprising contacting N-(phosphonomethyl)iminodiacetic acid or a salt thereof with an oxidizing agent in the presence of a transition metal containing oxidation catalyst substantially devoid of a noble metal active phase, wherein said transition metal containing oxidation catalyst comprises a carbon support having formed thereon a transition metal composition comprising a transition metal and nitrogen, wherein: the transition metal is selected from the group consisting of iron, cobalt, and combinations thereof; the total Langmuir surface area of the transition metal containing oxidation catalyst is at least 1200 m the micropore Langmuir surface area of the transition metal containing oxidation catalyst is from about 750 to about 1100 m said transition metal containing oxidation catalyst further comprises carbon nanotubes at the surface of the carbon support.