[covek11]

There are indications that Lithium Sulphide could be made from liquid H2S and solid Li2CO3 powder. The reactor has to be super cooled because H2S wouldn't be in a liquid form. Let's assume the reaction goes like this:
Li2CO3 +  H2S   =  Li2S   +    CO2   +   H2O
I wonder what is the mechanism for this reaction.
Does a proton from H2S attaches to O leaving HS- ion? If  that is the case would such a structure be unstable enough to let Li away to join HS- ion.
Is there anyone around with some ideas ?

[BluRay]

In solid Li₂CO₃ you have essentially a ionic crystal with Li⁺ and CO₃^2- ions. Probably the H₂S molecules are attracted bt both ions; I suspect however that the main reaction is between the hydrogen atom of the  H₂S molecule and the CO₃^2- ion: the latter is basic and gives easily electrons to the hydrogen.