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The problem of replacing indium with aluminum plates

2010-11-19View Original

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Why does the reaction proceed very well right after an aluminum plate is inserted into the indium back-extraction solution, but then it stops working? Moreover, the material that is displaced forms clumps similar to sand that cannot be compressed together. It has already been neutralized with sodium hydroxide, with an equivalent weight of 2.5
Reply #22010-11-19
The reasons are as follows: 1. The reaction temperature is too low to allow the reaction to proceed. 2. There are too many impurities, which cover the aluminum plate and prevent it from reacting with indium. 3. No filtration was performed during the neutralization process, so the solution contains particles. 4. If the indium concentration is too high, it undergoes hydrolysis; in that case, haha, it’s really frustrating.
Reply #32010-11-19
Big brother, thank you so much. You’re absolutely right; the impurities are indeed too high. But how to deal with it? Please, big bro
Reply #42010-11-19
Is the phone number in your information yours?
Reply #52010-11-20
It depends on what impurities are exceeding the limits in your back-extraction solution to determine what method should be used for treatment
Reply #62010-11-21
This post was last edited by FILTRATION-MAN on 2010-11-21 at 12:53 -- I don’t think I’ve heard much about metal displacement reactions requiring very high temperatures; I’m not sure what temperature is needed in this case --

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