How to avoid formation of Lithium Chromate ?

[Panthera Leo]

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.

 

[Borek]

I don't see how chromate can be produced from these oxides, unless Cr undergoes disproportionation.

 

[Panthera Leo]

Thanks for the reply Borek,

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

Thanks again :)

 

[Borek]

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.

 

[Panthera Leo]

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