I don't know but the catalyst Ruthenium is exceedingly rare, only the 74th most abundant element in Earth's crust. It usually occurs as a minor component of pla

I don't know but the catalyst Ruthenium is exceedingly rare, only the 74th most abundant element in Earth's crust. It usually occurs as a minor component of platinum ores; annual production is about 20 tonnes. You can make urine into fuel with platinum and not create CO2 in the first place. http://www.technocrazed.com/scientists-make-urine-powered-fuel-cells-to-drive-cars http://www.technocrazed.com/scientists-make-urine-powered-fu...