In the production of {HEAD ~ amines} from nitriles where the nitriles are hydrogenated under pressure in the presence of a Raney Nickel Catalyst using hydrogen produced from methane and containing CO2, a more efficient separation of the product hexamethylene diamine from the catalyst is obtained by maintaining {TAIL ~ a specified carbonate concentration} 
In the production of { HEAD ~ amines } from nitriles where the nitriles are hydrogenated under pressure in the presence of a Raney Nickel Catalyst using hydrogen produced from methane and containing CO2 , a more efficient separation of the product hexamethylene diamine from the catalyst is obtained by maintaining { TAIL ~ a specified carbonate concentration }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL