Process for the production of carbon molecular sieves.

摘要

A process for the production of a carbon molecular sieve which comprises (a) treating a thermoset phenolic resin with cations of a metal of Group IA of the Periodic Table so as to deposit on the resin a total quantity of Group IA metal in the range of from 1x10<-><6> to 1x10<-><2> moles per mole of carbon in the final molecular sieve product and subsequently (b) carbonising the thermoset phenolic resin by heating it to a temperature in the range of from 600 to 1000 DEG C while maintaining a reduced pressure over the material being carbonised at least while the carbon is being heated at a temperature above 500 DEG C.