Capillary column gas chromatography of C6–C11 aromatic compounds : Synthesis of selected isomers for identification purposes
✍ Scribed by Frederick Baumann; Sigmund M. Csicsery
- Publisher
- Elsevier Science
- Year
- 1967
- Tongue
- English
- Weight
- 488 KB
- Volume
- 26
- Category
- Article
- ISSN
- 1873-3778
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✦ Synopsis
Synthesis of selected
i\lOTES chromatography of CL-C;I aromatic compounds isomers for identification purposes
This work extends the gas chromatography of C,-C,,, alkylbenzenes to include C,, alkylbenzenes, styrenes, indene, indan, tetralin, and naphthalene. Previous studies of aromatic compounds include only the C,-C,, alkylbenzenesl-4.
Capillary columns and temperature programming are used as these techniques are best for complex wide boiling range mixtures such as C,-C,, aromatics. Mixtures of selected C,, and C,, alkylbenzene isomers are synthesized and used for identification purposes, The initial identification of these isomer mixtures using mechanistic and kinetic considerations is described. Gas c?zromatogra$dzy. A 3oo-ft. by o.oz-in. I.D. Type 347 stainless steel column was coated by passing a LO O/J solution of Ucon Ll355oX dissolved in methylene chloride through the column with a pressure of 20 p.s.i.g. The column has been used for approximately two years without noticeable deterioration. All data were obtained with a Perkin-Elmer Model 800 gas chromatograph. The experimental conditions are: (I) Injector temperature 200' minimum (2) Detector temperature 130~ minimum (3) Column temperature 6o--130~ at r"/min (4) Inlet pressure 20 p.s.i g (5) Sample size x-5 ~1 (6) Split ratio determined by No. 25 syringe needle (7) Recorder speed 3 in./min (4 in./min for better accuracy on early peaks) (8) Electrometer attenuation +~OO depending on sensitivity required.
2 N.