Removal of Benzaldehyde from Methanol Using Alkoxyamine Functionalized Silica Gel
Copyright © 2008 American Chemical Society .
NOTE: At the time of publication, the author Hasan Palandoken was not yet affiliated with Cal Poly.
Alkoxyamines (RONH2) react readily with aldehydes and ketones to form stable oxime ethers, and, thus are expected to be excellent scavengers of these compounds. We installed alkoxyamines on silica gel surface to remove benzaldehyde from methanol. Silica gel was immersed in H2O2/H2SO4 solution to activate the surface. Activated silica gel was then reacted with 3-chloropropyltrichlorosilane. Displacement of the chloride with N-hydroxyphthalimide and subsequent treatment with hydrazine provided alkoxyamines on the surface of silica gel. The resulting silica gel surface with alkoxyamine functional groups was immersed in a 100 ppm benzaldehyde solution in methanol. After 24 h, the results showed 86.5 + 7.2 % removal of benzaldehyde from methanol.
Dino Sulejmanovic, Carrie Jo Pruitt, Eric Conte, Hasan Palandoken, and Shing-Yi Suen. "Removal of Benzaldehyde from Methanol Using Alkoxyamine Functionalized Silica Gel" 60th Southeastern Regional Meeting Of The American Chemical Society Proceedings: Nashville, Tennessee... Nov. 2008.
Available at: http://works.bepress.com/hpalando/12