Patent ID: 8658020

Claim:
A process comprising: i) contacting a distillate feedstream having an RON of less than about 45 and comprising a) C 10 and heavier hydrocarbons; b) at least about 20 wt. % 2-ring naphthenes; c) less than about 40 wt. % 1-ring naphthenes, and d) less than about 5 wt. % C 6 -C 9 aromatics, wherein less than about 75 wt. % of said distillate feedstream boils at a temperature less than or equal to about 221° C.; with a first catalyst comprising a Group VIII metal and a zeolite to thereby produce an intermediate product comprising a) at least about 50 wt. % 1-ring naphthenes; and b) less than about 1 wt. % 1-ring aromatics; wherein at least about 90 wt. % of said intermediate product boils at a temperature less than or equal to about 221° C.; and ii) contacting said intermediate product with a second catalyst comprising a Group VIII metal, tin and an inorganic metal oxide support to thereby produce a product stream having an RON of at least about 60 and comprising a) less than about 15 wt. % 2-ring naphthenes; and b) at least about 9 wt. % C 6 -C 9 aromatics; wherein at least about 90 wt. % of said product stream boils at a temperature less than or equal to about 221° C. wherein the contacting of step (i) is at a temperature from about 232° C. to about 260° C., a pressure from about 250 psig to about 350 psig, and a WHSV from about 2 to about 9 hr −1 ; and wherein the contacting of step (ii) is at a temperature from about 399° C. to about 452° C., a pressure from about 250 psig to about 350 psig, and a WHSV from about 2 to about 6 hr −1 .