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Topic: Beta Gallium Oxide (Ga2O3) solubility, synthesizing NaGaO2  (Read 4024 times)

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Offline flimflamman

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Beta Gallium Oxide (Ga2O3) solubility, synthesizing NaGaO2
« on: February 03, 2017, 05:52:41 PM »
Hi all,

I began a new project which requires preparing NaGaO2. I couldn't find much literature on it, but found that Ga2O3 can react with NaOH to form NaGaO2. Now that I have it and am mixing it, our group has found that it is like beta-Ga2O3 which is very stable. Fischer says it is soluble in Alkali.

Almost all of the Ga2O3 on the market is beta, and the publications I'm using are from the 1990s. Another I found used Na2CO3 to dissolve, but I'm not sure why it would be different than NaOH. A more recent publication uses Na2CO3 to dissolve but at 1100 deg C for 12 hours. I would like to avoid this.

Any thoughts on how I should go about preparing NaGaO2?

Best,
Seth

Offline AWK

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Re: Beta Gallium Oxide (Ga2O3) solubility, synthesizing NaGaO2
« Reply #1 on: February 03, 2017, 07:22:13 PM »
Quote
A more recent publication uses Na2CO3 to dissolve but at 1100 deg C for 12 hours
Rather 850 deg C.
Quote
Another I found used Na2CO3 to dissolve, but I'm not sure why it would be different than NaOH
Heating sodium carbonate over 650 deg C you are dealing with sodium oxide Na2O.
Sodium hydroxide needs about 800 deg C for thermal decomposition.
AWK

Offline flimflamman

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Re: Beta Gallium Oxide (Ga2O3) solubility, synthesizing NaGaO2
« Reply #2 on: February 05, 2017, 10:49:11 AM »
Thanks AWK!

Found a publication that corroborates this.

Cheers,
Seth

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