March 28, 2024, 10:07:08 AM
Forum Rules: Read This Before Posting


Topic: Deactivating SiO2 and Lux-Flood acids  (Read 742 times)

0 Members and 1 Guest are viewing this topic.

Offline Meter

  • Full Member
  • ****
  • Posts: 254
  • Mole Snacks: +14/-3
  • Take what I say with a grain of salt
Deactivating SiO2 and Lux-Flood acids
« on: April 14, 2021, 01:29:24 PM »
During a recent column separation, I had to deactivate my silica gel phase by adding a small amount of triethylamine. My instructor said this is because our product is sensitive to acids. I looked it up and SiO2 is a Lux-Flood acid, which seems to be a fairly old acid-base definition where O2- is the accepting/donating species.

How exactly does triethylamine deactivate SiO2 this way? My instructor even postulated that SiO2 is actually a Brønsted acid, which is complete nonsense, right?


Sponsored Links