Journal
JOURNAL OF SEPARATION SCIENCE
Volume 34, Issue 18, Pages 2418-2426Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201100317
Keywords
Chromatographic evaluation; Cu-BTC; Lewis-acidic sorbent; Metal-organic frameworks (MOFs); Selective sampling; Selective sorbent
Categories
Funding
- Initiative for Explosives Detection at Pacific Northwest National Laboratory
- U.S. Department of Energy [DE-AC05-76RLO1830]
Ask authors/readers for more resources
The metal-organic framework copper-1,3,5-benzenetricarboxylate (Cu-BTC) was evaluated for its ability to selectively interact with Lewis-base analytes by examining retention on gas-chromatographic columns packed with Chromosorb W HP that contained 3.0% SE-30 along with various loadings of Cu-BTC. Scanning electron microscopy images of the support material showed the characteristic Cu-BTC crystals embedded in the SE-30 coating on the diatomaceous support. The results indicated that the Cu-BTC-containing stationary phase had limited thermal stability (220 degrees C) and strong general retention for analytes. Kovats index calculations showed selective retention (amounting to about 300 Kovats units) relative to n-alkanes for many small Lewis-base analytes on a column that contained 0.75% Cu-BTC compared with an SE-30 control. Short columns that contained lower loadings of Cu-BTC (0.10%) allowed elution of nitroaromatics; however, selectivity was not observed for aromatic compounds (including nitroaromatics) or nitroalkanes. Observed retention characteristics are discussed.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available