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