There is provided {TAIL ~ a process} and {HEAD ~ a catalyst} for hydrocracking hydrocarbons, such as gas oils 
There is provided { TAIL ~ a process } and { HEAD ~ a catalyst } for hydrocracking hydrocarbons , such as gas oils
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH