[Lion Den Dan]

And whence comes the energy to conduct this catalytic reaction? What becomes of the expended catalyst and is it toxic. Molydenum, what is the energy cost to produce that and is it not toxic to a degree????? Nothing without a price.

[reg45]

The nature of a catalytic agent is that it is not consumed in the reaction. BTW, I have been an advocate of hydrogen as a fuel for forty years.