JJay
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Barium Oxide from Barium Carbonate
Does anyone know how hard it is to prepare barium oxide from barium carbonate? Will heating barium carbonate over a propane flame in a crucible for a
few minutes do the job, or are higher temperatures/extended heating required?
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CobaltChloride
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According to this it decomposes at 1450 °C which is about the maximum temperature a propane torch can achieve if you put something in the flame: http://chemister.ru/Database/properties-en.php?dbid=1&id... . I doubt it can heat something in a crucible that high
All barium salts decompose at very high temperatures to barium oxide with the exception of Ba(NO3)2 which decomposes at 592 degrees celsius. I think
it would be much better to first react the barium carbonate with nitric acid and heat this mix until it stops releasing NO2.
[Edited on 19-7-2018 by CobaltChloride]
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clearly_not_atara
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It's very easy, you just dissolve in dilute acetic acid, then basify with NaOH...
[Edited on 04-20-1969 by clearly_not_atara]
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JJay
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I was considering using dilute HCl... but that is a really good idea.
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CobaltChloride
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Wouldn't that make Ba(OH)2? That isn't easy to decompose to BaO and H2O.
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Fulmen
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Correct. According to Wikipedia it can be dehydrated at 100°C in vacuum, at ordinary pressures you need 800°C.
We're not banging rocks together here. We know how to put a man back together.
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