Abstract
A procedure for the preparation of macroporous silica films suitable for planar chromatography is described. The films are produced by a low pH catalyses of alkyltrialkoxysilanes in oversaturated solution of pore forming organic compounds. A segregated three phase system yields thick films (10-60 μm) that have good adhesion to silica glass supports, uniform, mirror like surface and intercalated micron-dimension pores that permit capillarity driven elution of solvents through the film. A phase diagram demonstrating optimal operating conditions for macroporous and microporous film formation is introduced and analyzed.
| Original language | English |
|---|---|
| Pages (from-to) | 595-599 |
| Number of pages | 5 |
| Journal | Journal of Sol-Gel Science and Technology |
| Volume | 2 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - Jan 1994 |
Keywords
- chromatography
- macroporous
- pores
- silica films