using the system of n-butanol-formic acid-water ( 3:1:1 ) as an illustration , two methods of accelerating the system ageing are demonstrated : 1 ) butanol-acid mixture at a required ratio is kept for several hours before water is added and 2 ) butanol-acid mixture is passed through the ku-2 layer in the h-form .
C0089147
n-butanol
C0001977
butanol