A process 3, where the hydrogen pressure is from the atmospheric up to 10 bar, the temperature from {TAIL ~ 200° C.} to 350° C. and the treatment period, from {HEAD ~ 30 minutes} to 1.5 hours 
A process 3 , where the hydrogen pressure is from the atmospheric up to 10 bar , the temperature from { TAIL ~ 200 ° C. } to 350 ° C. and the treatment period , from { HEAD ~ 30 minutes } to 1.5 hours
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH