Carbon molecular sieves for purification of chlorofluorocarbons
 Chlorofluorocarbons are purified by removing hydrofluoric and hydrochloric acids with a carbon molecular sieve having an average pore size of about 3.5 Angstroms with no more than about 5% of the pores having a size less than 3.2 Angstroms and no more than about 5% of the pores having a size greater than 4.2 Angstroms. 
Allied-Signal Inc.
Y B B C
Y10S B01D B01J C07C
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