I read the entire post, plus some other SM posts on the same subject, plus some outside sources. My first question is similar to the one you posed,
but it was not answered by plante. All the references I've seen say that industrially a platinum-rhodium catalyst is used. Wikipedia says that the
rhodium should be 10% . Plante says he tried a lot of catalysts, and platinum works best; but he did not answer your question or mine, which is how
important the rhodium is, or how important the percentage of rhodium is. I'd still like to know.
Either you are really bad at reading, or you don't know how to properly stage a question. There is no importance of the
rhodium for hobbyist. It decreases the efficiency of the reaction, but increases the life span of your catalyst. Unless you are planning on running
you reaction hundreds or possibly thousands of times it is better to just get pure platinum.
As for my question 2, again, I did read the entire post, and, as I said, the discussion on this point was inconclusive. Plante pointed out that
catalytic converters are designed to convert NOx to N2; but he didn't say he had tried them, and in any case, my question still remains, can the
catalysts in a catalytic converter be used to make NOx from ammonia, perhaps under different physical conditions; and, more generally, might those
catalysts be useful in other ways to amateur chemists?
If you are doing this purely for academics why do you get so stuck up on catalytic converters? Under some circumstance you
might be able to get some kind of results, but the way I see it it is not worth it. As you probable know plante1999 used platinum clad asbestos. I
think i will use titanium media that is clad in platinum. So the price is not much different, but you can avoid a lot of headache and wasted reagents.
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