Provided is a hydrocracking process with a recycle loop for converting a petroleum feed to lower boiling products, which process comprises reacting a stream over a non-zeolite noble metal catalyst at a temperature of about 650 F. (343 C.) or less in a reactor positioned in the recycle loop of the hydrocracking reactor.

This invention relates to a process for conducting a hydrocracking or a hydrotreating process in a microchannel reactor. This invention also relates to a process and apparatus for flowing a vapor and liquid into a plurality of microchannels in a microchannel processing unit.

This invention relates to a process for conducting a hydrocracking or a hydrotreating process in a microchannel reactor. This invention also relates to a process and apparatus for flowing a vapor and liquid into a plurality of microchannels in a microchannel processing unit.

Methods are provided for making base metal catalysts with improved activity. After forming catalyst particles based on a support comprising a zeolitic molecular sieve, the catalyst particles can be impregnated with a solution comprising a) metal salts (or other precursors) for a plurality of base metals and b) an organic dispersion agent comprising 2 to 10 carbons. The impregnated support particles can be dried to form a base metal catalyst, and then optionally sulfided to form a sulfided base metal catalyst. The resulting (sulfided) base metal catalyst can have improved activity for cloud point reduction and/or for improved activity for heteroatom removal, relative to a base metal dewaxing catalyst prepared without the use of a dispersion agent.

A supported catalyst useful in processes for chemically refining hydrocarbon feedstocks is prepared, the catalyst comprising a metal from Group 6 of the Periodic Table, a metal from Groups 8, 9 or 10 and optionally phosphorous, wherein the metals, and phosphorous when present, are carried on a foraminous carrier or support, the carrier or support, preferably comprises porous alumina having a total pore volume (TPV) of about 0.6 cc/g to about 1.1 cc/g and comprising: (a) equal to or greater than about 78% to about 95% of TPV in pores having a diameter of less than about 200 Angstroms (); (b) greater than about 2% to less than about 19% of the TPV in pores having a diameter of about 200 () to less than about 1000 ; (c) equal to or greater than 3% to less than 12% of the TPV in pores having a diameter equal to or greater than about 1000 ; and (d) a pore mode equal to or greater than about 90 and less than about 160 . Preferably the support exhibits a d50 greater than about 100 and less than about 150 .

The invention relates to a process for producing benzene, comprising the steps of: (a) providing a hydrocracking feed stream comprising C5-C12 hydrocarbons, (b) contacting the hydrocracking feed stream in the presence of hydrogen with a hydrocracking catalyst comprising 0.01-1 wt-% hydrogenation metal in relation to the total catalyst weight and a zeolite having a pore size of 5-8 A and a silica (Si02) to alumina (AI.sub.2O.sub.3) molar ratio of 5-200 under process conditions including a temperature of 425-580 C., a pressure of 300-5000 kPa gauge and a Weight Hourly Space Velocity of 0.1-15 h.sup.1 to produce a hydrocracking product stream comprising benzene, toluene and C8+ hydrocarbons, (c) separating benzene, toluene and the C8+ hydrocarbons from the hydrocracking product stream and (d) selectively recycling back at least part of the toluene from the separated products of step (c) to be included in the hydrocracking feed stream.process for producing benzene from a c5-c12 hydrocarbon mixture

A supported catalyst useful in processes for chemically refining hydrocarbon feedstocks is prepared, the catalyst comprising a metal from Group 6 of the Periodic Table, a metal from Groups 8, 9 or 10 and optionally phosphorous, wherein the metals, and phosphorous when present, are carried on a foraminous carrier or support, the carrier or support, preferably comprises porous alumina having a total pore volume (TPV) of about 0.6 cc/g to about 1.1 cc/g and comprising: (a) equal to or greater than about 78% to about 95% of TPV in pores having a diameter of less than about 200 Angstroms (); (b) greater than about 2% to less than about 19% of the TPV in pores having a diameter of about 200 () to less than about 1000 ; (c) equal to or greater than 3% to less than 12% of the TPV in pores having a diameter equal to or greater than about 1000 ; and (d) a pore mode equal to or greater than about 90 and less than about 160 . Preferably the support exhibits a d50 greater than about 100 and less than about 150 .

A supported catalyst useful in processes for chemically refining hydrocarbon feedstocks is prepared, the catalyst comprising a metal from Group 6 of the Periodic Table, a metal from Groups 8, 9 or 10 and optionally phosphorous, wherein the metals, and phosphorous when present, are carried on a foraminous carrier or support, the carrier or support, preferably comprises porous alumina having a total pore volume (TPV) of about 0.6 cc/g to about 1.1 cc/g and comprising: (a) equal to or greater than about 78% to about 95% of TPV in pores having a diameter of less than about 200 Angstroms (); (b) greater than about 2% to less than about 19% of the TPV in pores having a diameter of about 200 () to less than about 1000 ; (c) equal to or greater than 3% to less than 12% of the TPV in pores having a diameter equal to or greater than about 1000 ; and (d) a pore mode equal to or greater than about 90 and less than about 160 . Preferably the support exhibits a d50 greater than about 100 and less than about 150 .

This invention relates to a process for chemically treating a carbon-containing feedstock (e.g., a polymer-based feedstock), comprising contacting (e.g., by a hydrocracking reaction) the carbon-containing feedstock and a hydrogen stream in the presence of at least one hydrocracking catalyst to produce an alkane-containing product stream. The hydrocracking catalyst comprises at least one transition metal or transition metal sulfide supported on an oxide-containing support. This invention also relates to an alkane-containing mixture obtained by the process described herein and a system/apparatus for carrying out the process described herein.

This invention relates to a process for chemically treating a carbon-containing feedstock (e.g., a polymer-based feedstock), comprising contacting (e.g., by a hydrocracking reaction) the carbon-containing feedstock and a hydrogen stream in the presence of at least one hydrocracking catalyst to produce an alkane-containing product stream. The hydrocracking catalyst comprises at least one transition metal or transition metal sulfide supported on an oxide-containing support. This invention also relates to an alkane-containing mixture obtained by the process described herein and a system/apparatus for carrying out the process described herein.