Heterogenic Catalyst (AP)

[imported_Sgt_Starr]

Hey guys,

Has anyone ever tried a heterogenic catalyst with AP or is that just a stupid idea? Seems to me it would be a cheaper and maybe faster way to make AP(also wouldnt have to worry about AP rattling in a metal container right?) Well anyways, I'll do some research tonight and see what I come up with so burn me if necessary.

[rikkitikkitavi]

i think using a heterogen catalyst making AP is not a very good idea.

First, all heterogenic catalytic reactions are difficult to controll the speed of. A very good concentration profile of the reactants over the catalyst is needed , otherwise you might have a runaway. Or biproducts e t c.

Second , you have the problem of separating AP from a solid catalyst
since is preciptates from the reaction mixture. A heterogenic catalyst is normally some sort of ceramic aluminia coated with the catalyst. F e w a car catalyst. So basically you would fill the catalyst with AP (heterogenic cataltytics are usually very porous)

Homogenus catalysis is much easier since concentration is the same all through the reactant mixture. Only variable is the rate you add the reactants and/or the catalyst.

Actually, making AP from H2O2 , HCl, (CH3)2=0 comes close to an engineers dream of implementing a reaction. Reactants are volatile.
Products are solid, not soluble in the reactants. Separation is soooo
easy. (but the fact that AP is , well AP is different)

sorry to kill your idea like that :)

/rickard

[VX]

Acetone is CH3COCH3.

And AP is soluble in one of the reactants... Acetone. The AP (from my experience anyway) does not start to precipitate out until the Acetone in solution is saturated with AP, at which point it precipitates very quickly because more acetone is used in the reaction, which means less solvent... and more AP is produced with less solvent for it to dissolve into.

I agree with you overall though <img border="0" title="" alt="[Wink]" src="wink.gif" />