Ferrocene
Separating Ferrocene and Acetylferrocene by Adsorption Chromatography
Separating Ferrocene and Acetylferrocene by Adsorption Chromatography Dry Pack Method Leah Monroe February 27, 2003
Organic Chemistry Lab II Experiment performed on February 18 and 20, 2003
Abstract:
Adsorption column chromatography is one way to separate compounds out of a mixture. In this technique, a solid stationary phase called the adsorbent is packed in a glass column and an eluent, which is the mobile phase, moves slowly through the packed column. In this experiment, an adsorption chromatography column was constructed using silica gel as the adsorbent. A 50:50 mixture of ferrocene and acetylferrocene was then separated using the eluents hexane and tert-butyl methyl ether (TBME). The less polar ferrocene was attracted to the less polar hexane, so as the hexane passed through the stationary phase, the ferrocene moved with it and the acetylferrocene was left behind. When TBME was passed through the stationary phase, the acetylferrocene moved with it because the more polar acetylferrocene was attracted to the more polar TBME. The percent recovery of ferrocene was 72.41% and the percent recovery of acetylferrocene was 82.76%.
1
Separating Ferrocene and Acetylferrocene by Adsorption Chromatography
Introduction: In this experiment, a 50:50 mixture of ferrocene and acetylferrocene will be separated using adsorption column chromatography. A microscale chromatography column will be constructed using the dry pack method. The eluents hexane and tert-butyl methyl ether will be used to separate ferrocene and acetylferrocene, and percent recoveries will be calculated.
Materials Used:
2 beakers, 50-mL 3-mL conical vial cotton or Kim wipe 4 Erlenmeyer flasks, 50-mL fine sand labels marking pen microspatula 2 Pasteur pipets, with latex bulbs 9-mm Pasteur pipet water bath @ 60°C #1 stopper support stand utility clamp 20-cm wire
Reagents and Properties:
Substances
Formula Weight
Separating Ferrocene and Acetylferrocene by Adsorption Chromatography Dry Pack Method Leah Monroe February 27, 2003
Organic Chemistry Lab II Experiment performed on February 18 and 20, 2003
Abstract:
Adsorption column chromatography is one way to separate compounds out of a mixture. In this technique, a solid stationary phase called the adsorbent is packed in a glass column and an eluent, which is the mobile phase, moves slowly through the packed column. In this experiment, an adsorption chromatography column was constructed using silica gel as the adsorbent. A 50:50 mixture of ferrocene and acetylferrocene was then separated using the eluents hexane and tert-butyl methyl ether (TBME). The less polar ferrocene was attracted to the less polar hexane, so as the hexane passed through the stationary phase, the ferrocene moved with it and the acetylferrocene was left behind. When TBME was passed through the stationary phase, the acetylferrocene moved with it because the more polar acetylferrocene was attracted to the more polar TBME. The percent recovery of ferrocene was 72.41% and the percent recovery of acetylferrocene was 82.76%.
1
Separating Ferrocene and Acetylferrocene by Adsorption Chromatography
Introduction: In this experiment, a 50:50 mixture of ferrocene and acetylferrocene will be separated using adsorption column chromatography. A microscale chromatography column will be constructed using the dry pack method. The eluents hexane and tert-butyl methyl ether will be used to separate ferrocene and acetylferrocene, and percent recoveries will be calculated.
Materials Used:
2 beakers, 50-mL 3-mL conical vial cotton or Kim wipe 4 Erlenmeyer flasks, 50-mL fine sand labels marking pen microspatula 2 Pasteur pipets, with latex bulbs 9-mm Pasteur pipet water bath @ 60°C #1 stopper support stand utility clamp 20-cm wire
Reagents and Properties:
Substances
Formula Weight
References: Chemistry Lab Experiments CHEM 224 TECH 708 pgs. 1 – 11 By Wigal/Manion/LeFevre/Wade, Jr./Rapp/Lee/Wikholm Weast, Robert C., ed. CRC Handbook of Chemistry and Physics. 70th ed. Boca Raton, FL: CRC Press, Inc., 1990.