A racemate may be resolved into its enantiomers by stereoselective adsorption on a crystalline molecular sieve having an assymetric crystal structure for example zeolite ZSM11. The resolution may be assisted by the presence of an enantiomer of a compound separable from that of the racemate either preadsorbed on the molecular sieve or included in a polar solvent solution of the racemate to be treated. Resolution of an alkyl aryl sulphoxide racemate is exemplified.
                            外消旋物可以通过立体选择性吸附在具有非对称性晶体结构的结晶
分子筛(例如
沸石 ZSM11)上而分解成其对映体。 在
分子筛上预先吸附或包含在待处理的外消旋物的极性溶剂溶液中的可与外消旋物分离的化合物对映体的存在可以帮助分解。 烷基芳基亚砜外消旋物的分解就是一个例子。