The thesis studied the separation of two systems: 2-chloro-3-methylpyridine and 2-chloro-5-methylpyridine;3-methypyridine and 4-methypyridine.

• 本文分别对2-氯-3-甲基吡啶和2-氯-5-甲基吡啶、3-甲基吡啶和4-甲基吡啶两个物系进行分离研究。