The preferred mode for operating the novel process of this invention is to use {TAIL ~ a fixed bed} of catalysts either in a two bed arrangement or in {HEAD ~ sequential catalyst stages} in one bed 
The preferred mode for operating the novel process of this invention is to use { TAIL ~ a fixed bed } of catalysts either in a two bed arrangement or in { HEAD ~ sequential catalyst stages } in one bed
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 HEAD OTH OTH OTH