The separation of pyridine and toluene

Acid sinking

The polarity difference between pyridine and toluene is large, you can consider using polyetteal diol hair columns

The polarity of the two is large. Use polar pillars, as if 70-80 degrees can be separated.

You can consider using liquid phase separation. If you use gas, see if you consider the acid and alkali of the sample.

These two things are not the way to separate the method, to choose the right pillar