Catalytic reforming process

Claim 2

The process of claim 2, wherein the said naphthenes are substantially converted to aromatics in the initial reaction zone.

Claim 3

The process of claim 3, wherein the refractory oxide support is selected from the group consisting of alumina, silica-alumina, acid treated alumina, and crystalline alumino-silicates.

Claim 4

The process of claim 4, wherein the Group IB metal is Cu.

Claim 5

The process of claim 5, wherein the catalyst consisting essentially of from about 0.05 to about 2.0 percent Pt and from about 0.05 to about 2.0 percent Cu and the remainder support.

Claim 6

The process of claim 5, wherein the pressure in the initial reaction zone ranges from about 50 to 500 psi and the temperature ranges from about 750* to about 1,000* F.

Claim 7

The process of claim 7, wherein reforming takes place in the presence of a hydrogen recycle of from 1,000 to 10,000 standard cubic feet per barrel of naphtha feed.

Claim 8

A process for catalytically reforming a hydrocarbon feed stream boiling between 80* and 450* F. and containing 15 to 75 percent naphthenes, 15 to 75 percent paraffins and the remainder aromatics, which comprises passing said feed stream and a hydrogen-rich gas at a temperature of from 600* to 1,050* F., a pressure of 15 to 600 psig, at a space velocity of 0.5 to 10 W/Hr./W, into a first catalytic reforming zone, said zone containing a supported catalyst consisting essentially of Pt and a metal selected from Group IB of the Periodic Table of the elements, whereby said naphthene content is decreased to a maximum level of about 15 wt. percent, passing the effluent from said first zone into a second catalytic reforming zone, said second zone comprising a Pt on alumina catalyst, and recovering a product of high octane number.

Claim 9

The process of claim 9, wherein said Group IB metal is Cu.

Claim 10

The process of claim 9 wherein said catalyst of the first catalytic reforming zone consisting essentially of from about 0.05 to 2.0 percent Pt, from about 0.05 to about 2.0 wt. percent Cu, and the remainder support.

Claim 11

A process for the conversion of naphthenes to aromatics which comprises contacting a naphtha feed stream, said naphtha feed stream comprising from 15 to 75 percent by weight naphthenes with a catalyst consisting essentially of platinum and a metal selected from Group IB of the Periodic Table of the elements, supported on a refractory oxide support, said platinum comprising from about 0.05 to 2.0 weight percent and said Group IB metal comprising from about 0.05 to 2.0 weight percent of the total catalyst, in the presence of hydrogen, at a temperature of from 600* to 1,050* F. and a pressure of from 15 to 600 psig, whereby said naphthenes are substantially converted to aromatics.

Claim 12

The process of claim 12 wherein said Group IB metal is copper.

Claim 13

The process of claim 13 wherein said naphtha feed stream has a boiling point range of from 80* to 450* F.