Question about Catalysts

[Sphynx]

I was wondering. In the reaction of full hydrogenation of 1, 4 butynediol into 1,4 butanediol, we use Platinum catalyst with Calcium Carbonate support. Is there any way to calculate the amount of catalyst needed for the reaction to go on? And how many reactions can i run before this catalyst gets wasted?

[Testo]

I suspect you could only get this kind of information (catalytic amounts, turnover number etc) from Journals on this topic. Hydrogenations that I've done don't generally need much (ca. 10% loading) and is good to use 3/4 times again (but with decreasing performance).