separating impurities in phenol
Posted: Wed Jul 11, 2007 7:10 pm
I'm having trouble finding the best column to separate cyclohexanol (b.p. 161C), cyclohexanone(b.p. 156C), benzaldehyde (b.p. 178) and anisole (b.p. 154C) from each other in Phenol. The concentrations are very low <10ppm each in molten phenol. The best I can do so far is a supelco wax 10 60 m with a low initial temp then a big push and bakeoff. What do you guys suggest? New customers are great until you get there specifications. 
