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Cyclohexanone from Cyclohexanol Steam-Distilled over Copper-Chromium-Barium Oxide (Winans, Wingfoot, US 2,218,457)
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31. Oktoba 2026DE
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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.
Juu
1 day

Maagizo

1

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).

Zana zinazohitajika:

Kichocheo cha copper chromiteKichocheo cha copper chromite
Tanuru ya MrijaTanuru ya Mrija
KipimajotoKipimajoto
2

Steam-distil the alcohol over it

Steam-distil 351 g of cyclohexanol through the tube over 4 hours.

Vifaa kwa hatua hii:

SaikloheksanoliSaikloheksanoli351 g

Zana zinazohitajika:

Boila ya mvukeBoila ya mvuke
Tanuru ya MrijaTanuru ya Mrija
Mizani ya mizani-mbiliMizani ya mizani-mbili
3

Condense and fractionate

Condense the vapours and take the cut boiling at 150-156 C: 330 g cyclohexanone, 94 %.

Zana zinazohitajika:

Koili ya kifidishajiKoili ya kifidishaji
Chombo cha kunereka kwa sehemuChombo cha kunereka kwa sehemu
KipimajotoKipimajoto
4

Reactivate the catalyst

When it slows, pass air over the catalyst at 450 C.

Zana zinazohitajika:

Tanuru ya MrijaTanuru ya Mrija
KipimajotoKipimajoto

Vifaa

1

Zana Zinazohitajika

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Cyclohexanol: Phenol Hydrogenated over Nickel, Sabatier 1922
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Cyclohexanol: Phenol Hydrogenated over Nickel, Sabatier 1922

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