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Cyclohexanone from Cyclohexanol Steam-Distilled over Copper-Chromium-Barium Oxide (Winans, Wingfoot, US 2,218,457)
Taking two hydrogens off cyclohexanol gives cyclohexanone, the slow solvent in PVC cement. Winans carried the alcohol with steam over a hot copper-chromium-barium oxide; the catalyst lasts and is woken again with hot air.
Result: 330 g cyclohexanone from 351 g cyclohexanol, 94 %.
Source: Winans, US 2,218,457 (Wingfoot, 1940), Example 1. Picture drawn by Youblob.
Advanced
1 day
Instructions
1
1
Heat the catalyst tube
Heat the catalyst tube
Fill a tube with copper-chromium-barium oxide catalyst and hold it at about 325 C (claimed range 180-400 C).
Tools needed:
Copper Chromite Catalyst
Tube Furnace
Thermometer2
2
Steam-distil the alcohol over it
Steam-distil the alcohol over it
Steam-distil 351 g of cyclohexanol through the tube over 4 hours.
Materials for this step:
Cyclohexanol351 gTools needed:
Steam BoilerTube Furnace
Balance Scale3
3
Condense and fractionate
Condense and fractionate
Condense the vapours and take the cut boiling at 150-156 C: 330 g cyclohexanone, 94 %.
Tools needed:
Condenser Coil
Fractionating StillThermometer4
4
Reactivate the catalyst
Reactivate the catalyst
When it slows, pass air over the catalyst at 450 C.
Tools needed:
Tube FurnaceThermometerMaterials
1- 351 gPlaceholder
Tools Required
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