John paul III
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Making potassium formate from CO and KOH
I'm wondering if I need elevated pressure to synthesize potassium formate from CO and KOH.
Analogous process for NaOH is done at 160°C and 8 atm.
Has anyone here tried this? How much would the yields suffer?
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Melgar
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I'd expect that unless conditions were carefully controlled, you'd get water and potassium carbonate. I'd actually be surprised if you got anything
other than that.
The first step in the process of learning something is admitting that you don't know it already.
I'm givin' the spam shields max power at full warp, but they just dinna have the power! We're gonna have to evacuate to new forum software!
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John paul III
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Quote: Originally posted by Melgar  | | I'd expect that unless conditions were carefully controlled, you'd get water and potassium carbonate. I'd actually be surprised if you got anything
other than that. |
That would mean some CO would be undergoing reduction.. to what, elemental carbon? Even the decomposition of KCOOH results in evolution of CO, no CO2.
I don't see how the carbonate ion would be produced. What gives you the idea that this would happen?
[Edited on 11-5-2018 by John paul III]
[Edited on 11-5-2018 by John paul III]
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Foeskes
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I cant think of any ways for the CO to get the extra O2
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AJKOER
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KCOOH patent: https://patents.google.com/patent/US6849764
Prepared from formaldehyde as a gas at 100 C into aqueous KOH.
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John paul III
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I want to use KCOOH to synthesize formaldehyde by thermal decomposition of Ca(COOH)2. Therefore Im specifically interested In KOH + CO reaction.
Well, thank you anyway 
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CobaltChloride
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Maybe you could try making it using NurdRage's method (https://www.youtube.com/watch?v=ceL-I0azPH8). He first makes glyceryl monooxalate and then decomposes it to glyceryl monoformate. Afterwards, he
hydrolyzes the ester to obtain formic acid.
Edit: Yay! This is my 100th post!
[Edited on 12-5-2018 by CobaltChloride]
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John paul III
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Thank you, but let me reiterate: I want to use the most low tech starting materials (that's my chemical kink), in this case KOH from wood ash. The
route with oxalic acid would be redundant in this case (since I would probably make it with Ca(OH)2 and carbon monoxide). I find it hard to believe
that the potassium hydroxide reaction wouldn't progress at atmospheric pressure
Btw. congrats on the 100th post
[Edited on 12-5-2018 by John paul III]
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