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Topic: Separation of ethanol and phenol  (Read 5554 times)

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Offline deutdeut

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Separation of ethanol and phenol
« on: February 14, 2007, 10:53:54 PM »
If I have a solution containing ethanol and phenol , how can I separate them?
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Offline UWSteve

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Re: Separation of ethanol and phenol
« Reply #1 on: February 15, 2007, 01:02:23 AM »
Well, there is a very large difference in their boiling points. Maybe that will start you in the right direction.
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Offline AWK

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Re: Separation of ethanol and phenol
« Reply #2 on: February 15, 2007, 02:17:21 AM »
Compare acidity of phenols and alcohols
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AWK

Offline lavoisier

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Re: Separation of ethanol and phenol
« Reply #3 on: February 15, 2007, 01:44:02 PM »
Quote from: UWSteve on February 15, 2007, 01:02:23 AM
Well, there is a very large difference in their boiling points. Maybe that will start you in the right direction.

Phenols are tricky in distillation, they are very volatile even below their bp. Phenol itself can be steam-distilled with water. So I would rather follow AWK's suggestion.
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Offline UWSteve

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Re: Separation of ethanol and phenol
« Reply #4 on: February 15, 2007, 05:14:52 PM »
Quote from: lavoisier on February 15, 2007, 01:44:02 PM
Quote from: UWSteve on February 15, 2007, 01:02:23 AM
Well, there is a very large difference in their boiling points. Maybe that will start you in the right direction.

Phenols are tricky in distillation, they are very volatile even below their bp. Phenol itself can be steam-distilled with water. So I would rather follow AWK's suggestion.

Interesting. Thanks for the info.
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Offline Yggdrasil

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Re: Separation of ethanol and phenol
« Reply #5 on: February 18, 2007, 05:58:41 PM »
How would extracting with aqueous sodium hydroxide work?  Ethanol is soluble in water as well.
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Offline Custos

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Re: Separation of ethanol and phenol
« Reply #6 on: February 19, 2007, 01:05:05 AM »
Phenol is not very soluble in aliphatic hydrocarbons. You could add some hexane and cool the solution and the phenol may crystallise out (m.p. = 40-43 deg C). you could then collect it by filtration. Of course you then need to separate the hexane and ethanol.
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