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Tetrahydrofuran from Caustic-Washed Furan Hydrogenated over Nickel on Kieselguhr (Banford and Manes, du Pont, US 2,846,449)
Charlie

Nilikha ni

Charlie

31. Oktubre 2026DE
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Tetrahydrofuran from Caustic-Washed Furan Hydrogenated over Nickel on Kieselguhr (Banford and Manes, du Pont, US 2,846,449)

Furan from furfural carries a little carbon dioxide and water that distilling does not remove, and they hold back the hydrogenation. Banford and Manes washed the furan with dilute potash first; then nickel on kieselguhr turned nearly all of it into tetrahydrofuran. Result: tetrahydrofuran, conversion raised from 85-90 % to 97 %. Source: Banford and Manes, US 2,846,449 (du Pont, 1958), Example 1. Not given: how the THF is drawn off. Picture drawn by Youblob.
Abantado
1 day

Mga Tagubilin

1

Make the caustic wash

Make 10 % potassium hydroxide in water.

Mga kailangang kasangkapan:

Potassium hydroxidePotassium hydroxide
TubigTubig
2

Wash the furan

Pass distilled furan up through the caustic in a column packed with porcelain saddles, then let suspended caustic settle out. Ours at small scale: shake in a separatory funnel and draw off the caustic.

Mga materyales para sa hakbang na ito:

FuranFuran1 as required

Mga kailangang kasangkapan:

Embudong panghiwalayEmbudong panghiwalay
3

Hydrogenate

Heat the washed furan and feed it with hydrogen to a hydrogenator holding active nickel on kieselguhr at 85-100 C and about 500 psi gauge.

Mga materyales para sa hakbang na ito:

HaydrohenoHaydroheno1 as required

Mga kailangang kasangkapan:

Nickel sa kieselguhr na catalystNickel sa kieselguhr na catalyst
Reactor na may presyonReactor na may presyon
Panukat ng DiinPanukat ng Diin
TermometroTermometro
4

Check the conversion

Washed furan gives about 97 % tetrahydrofuran; unwashed only 85-90 %. Raising the feed to 105 C does not help unwashed furan.

Mga Materyales

2
  • 2
    Furan
    1 as required
    Placeholder
  • 3
    Haydroheno
    1 as required
    Placeholder

Mga Kinakailangang Kasangkapan

7

Ang blueprint na ito ay gumagawa ng

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Tetrahydrofuran

Free

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Kaugnay na Blueprint

Ang mga blueprint na ito ay nagbabahagi ng kaalaman — mga teknik, materyales, o prinsipyo

Furan from Furfural Vapour and Steam over Zinc-Iron Chromite (Whitman, du Pont, US 2,374,149)

Furan from Furfural Vapour and Steam over Zinc-Iron Chromite (Whitman, du Pont, US 2,374,149)

ni CharlieDE

Organiko

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Furfural from Oat Hulls Steamed with Sulfuric Acid in a Rotary Digester (Miner and Brownlee, Quaker Oats, US 1,735,084)
Mapanganib

Furfural from Oat Hulls Steamed with Sulfuric Acid in a Rotary Digester (Miner and Brownlee, Quaker Oats, US 1,735,084)

ni CharlieDE

Organiko

7
0
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CC0 Pampublikong Domain

Ang blueprint na ito ay inilabas sa ilalim ng CC0. Malaya kang kumopya, magbago, mamahagi, at gumamit nang walang pahintulot.

Suportahan ang Maker sa pamamagitan ng pagbili ng mga produkto sa kanilang Blueprint Komisyon ng Maker itinakda ng mga Vendor, o lumikha ng bagong bersyon ng Blueprint na ito at isama bilang koneksyon sa iyong Blueprint upang ibahagi ang kita.

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