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How to avoid formation of Lithium Chromate ?

  1. Feb 8, 2012 #1
    How to avoid formation of Lithium Chromate ???

    I am willing to make a glass batch which consists of Li2O and Cr2O3 as well as other stuff... My concern is Lithium Chromate which shouldn't form due its undesirable color.

    How can I possibly avoid formation of Lithium Chromate at about 1000C ? Does adding reducing agents to glass batch help?

    I will highly appreciate any comments.

    Thanks.
     
    Last edited: Feb 8, 2012
  2. jcsd
  3. Feb 9, 2012 #2

    Borek

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    Staff: Mentor

    Re: How to avoid formation of Lithium Chromate ???

    I don't see how chromate can be produced from these oxides, unless Cr undergoes disproportionation.
     
  4. Feb 10, 2012 #3
    Re: How to avoid formation of Lithium Chromate ???

    Thanks for the reply Borek,

    Is there any way to limit or eliminate any potential disproportionation?

    Thanks again :)
     
  5. Feb 11, 2012 #4

    Borek

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    Staff: Mentor

    Re: How to avoid formation of Lithium Chromate ???

    No idea. If it is disproportionation that is a problem, it means you have two potential stable products - one is the oxidized form, the other reduced form. That in turn means adding a reducing (or oxidizing, although that's a thing you want to avoid) agent you will just risk one of these stable products will form. But I am just waving my hands here.
     
  6. Feb 11, 2012 #5
    Re: How to avoid formation of Lithium Chromate ???

    Many thanks indeed. Its great to have a second opinion.
     
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