deadrush
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Novel Ketene synthesis - First time poster, long time reader
Erbium oxide and acetic acid can be reacted to form Erbium acetate trihydrate. From there, Erbium acetate can be heated to 310°C to release ketene.
I am not an expert in chemistry (only an undergraduate degree), but from what I've read, this works. Erbium oxide is available in select (read: rare)
ceramic / pottery supply shops.
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Texium
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Thread Moved
13-7-2023 at 04:37 |
Texium
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Where? Please cite your source.
One issue I would anticipate is that pottery grade metal oxides are often very inert, due to calcination, so erbium oxide of that grade may not
dissolve in acetic acid.
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arkoma
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aside from the fact ketene is very dangerous.
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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arkoma
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Thread Moved
13-7-2023 at 08:45 |
arkoma
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Thread Moved
13-7-2023 at 19:14 |
clearly_not_atara
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| Quote: | | from what I've read |
From what I've read, the sky is green.
Where are you reading this, exactly?
[Edited on 04-20-1969 by clearly_not_atara]
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mayko
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Whether it could be a useful preparation I don't know, but this supports ketene as a decomposition product of erbium acetate:
Erbium oxide from erbium acetate hydrate; formation, characterization and catalytic activity. G.A.M. Hussein 2001 Powder Technology, Volume 118, Issue
3, Pages 285-290,
https://doi.org/10.1016/S0032-5910(00)00384-3.
| Quote: | The thermal processes involved during the decomposition course of hydrated erbium acetate (Er(CH3COO)3·4H2O) up to 800°C in an atmosphere of static
air were monitored by non-isothermal gravimetry and differential thermal analyses. The gaseous decomposition products were identified by IR
spectroscopy. Intermediates and final solid products were characterized by IR spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy
(SEM). The results showed that Er acetate dehydrates completely in one step and decomposes to Er2O3 at 590°C through three noncrystalline unstable
intermediates. The volatile decomposition products from the acetate are water vapor, acetic acid, ketene and acetone. Er2O3 obtained
from ErAc at 800°C has large porous particles with surface area of 55 m2/g. Er2O3 obtained catalyzes the decomposition of acetone to give methane and
isobutene.
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Attachment: Erbium oxide from erbium acetate hydrate formation characterization and catalytic activity.pdf (349kB)
This file has been downloaded 89 times
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unionised
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I assumed that was the point.
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clearly_not_atara
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Quote: Originally posted by mayko  | Whether it could be a useful preparation I don't know, but this supports ketene as a decomposition product of erbium acetate:
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Well I'll be. Complete dehydration of a metal acetate is already unusual. And the DTA is quite promising. But the isolation of ketene or AA was not
achieved.
The article says that the same behavior was observed in dysprosium at 355 C. Maybe some further consideration of the lanthanides is warranted.
[Edited on 14-7-2023 by clearly_not_atara]
[Edited on 04-20-1969 by clearly_not_atara]
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