Why potassium carbonate is used instead of sodium carbonate when drying anthraquinone in hydrogen peroxide?
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This post was last edited by sunjl1981 at 2013-1-6 19:54 as the title. . Why potassium carbonate is used instead of sodium carbonate when drying anthraquinone in hydrogen peroxide # + + . hcbbs
This is what I also want to ask. Go first
Through my consultation with relevant experts today, I first know the role of potassium carbonate in the process. There are three: The first potassium carbonate has very strong water absorption. The function of potassium carbonate in the alkali tower is to absorb the moisture in the raffinate, turning concentrated alkali into dilute alkali. Secondly, it neutralizes the acidic components in the raffinate, and thirdly, it has the function of regenerating the degradation products of anthraquinone. Some people have done experiments on sodium carbonate. The experiments on sodium carbonate include the use of caustic soda, which is very alkaline and has poor absorption. Regenerating degraded materials also didn't work, and as a result, the working conditions worsened and almost stopped. (The above are all responses from relevant professionals, please give me your advice if they are not enough)
I've been thinking about it for a long time and haven't figured it out yet, but I've accidentally added something here. I see the principle, thank you!
study* Yes, haha! :handshake
Finally found the answer, thank you very much
Haha, I have considered this issue before, but unfortunately I don’t know any experts. Sometimes you can't make a car by yourself behind closed doors haha
In fact, potassium carbonate is not the most ideal choice for drying anthraquinone in hydrogen peroxide. The alkali metal ions of potassium carbonate are easily entrained by the working fluid into the hydrogenation tower, thus affecting the activity and service life of the palladium catalyst.
But the potassium carbonate you use is all light potassium carbonate. Why is this? Foreign technologies all use heavy potassium carbonate. Experts please explain. Can't heavy granular Germany be used? There are still requirements for the number of meshes.
study* Yes, thank you! Always wanted to know what was going on.
study* Yes, thank you! Always wanted to know what was going on.