Sciencemadness Discussion Board

Lowest melting point alkali carbonate or alkali carbona eutectic

akinmad - 3-11-2005 at 15:30

Dear Friends,
I hope this is the correct section for this. Recently I am researching the molten carbonate fuel cells. This type of fuel cells are the most robust fuel cells with respect to CO poisoning. However their main disadvantage is they have to be heated to operating temperature (i.e. their melting point) before they produce electricity. All alkali carbonates I am researching have high melting points. Consequently, I am looking for a low melting point alkali carbonate or alkali carbonate eutectics. Any ideas? Regards.

BromicAcid - 3-11-2005 at 19:57

2nd result on google searching "Molten Salt Database" was the hit I was looking for.

http://ras.material.tohoku.ac.jp/~molten/molten_ps_query1.ph...

Give it a shot.

akinmad - 4-11-2005 at 11:44

Quote:
Originally posted by BromicAcid
2nd result on google searching "Molten Salt Database" was the hit I was looking for.

http://ras.material.tohoku.ac.jp/~molten/molten_ps_query1.ph...

Give it a shot.

Thank you. I had previously visited that link but it does not give melting points (or am I missing something?). Regards

12AX7 - 4-11-2005 at 14:35

Pretty close, you wanted this.
http://ras.material.tohoku.ac.jp/~molten/molten_eut_query1.p...

I find:
System: KCl-K2CO3-Na2CO3, Mol %:42.5-43.3-18.1, Temp: 558 C
System: K2CO3-Na2CO3 , Mol %: 38.5-61.5, Temp: 695 C
System: K2CO3-Li2CO3-Na2CO3, Mol %: 26.8-42.5-30.6, Temp: 393 C

Tim

[Edited on 11-4-2005 by 12AX7]