Maximum temperatures of packed columns – Molecular Sieves

For my fourth post in this series, I would like to focus on molecular sieve packed columns.   At Restek, our three most common molecular sieve packings are the ShinCarbon, 5A, and 13X.  The ShinCarbon is a carbon molecular sieve, while the 5A and 13X are zeolite molecular sieves.  

 

	Max Temp
Column and/or Packing	(°C)
ShinCarbon	280 / 300*
Molecular Sieve 5A	300 / 350**
Molecular Sieve 13X	350**

 

* May be briefly programmed to this temperature.  Extended conditioning/drying at high temperatures may cause surface activity.

** Only use clean (hydrocarbon-free), dry nitrogen at the maximum temperature(s).  Extended conditioning/drying using other carrier gases at high temperatures may cause surface activity.