# US 7,612,012 B2 · Selectively suppressed hydrogenation catalyst

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- Number: US 7,612,012 B2
- Document ID: US7612012B2
- Status: Granted
- Kind: B2
- Application number: 11/234,668
- Filed: 2005-09-22
- Published: 2006-01-26
- Granted: 2009-11-03
- Earliest claimed: 2002-03-13
- Assignees: ExxonMobil Research and Engineering Company
- Inventors: Garland B. Brignac; Michele S. Touvelle; William C. Baird, Jr.
- Web page: https://patentgrep.com/patent/US7612012B2

## CPC

- C10G 45/10: containing platinum group metals or compounds thereof
- B01J 23/85: Chromium, molybdenum or tungsten
- B01J 37/18: with gases containing free hydrogen
- C10G 45/04: characterised by the catalyst used
- C10G 45/08: in combination with chromium, molybdenum, or tungsten metals, or compounds thereof
- B01J 31/02: containing organic compounds or metal hydrides
- B01J 37/20: Sulfiding
- C10G 2400/02: Gasoline
- C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

The hydrogenation activity of a heteroatom removal catalyst, having activity for both heteroatom removal and hydrogenation, is selectively suppressed by a treatment which comprises contacting the catalyst with (i) hydrogen, (ii) a selectively deactivating agent that suppresses the catalyst's hydrogenation activity, and (iii) a protective agent, such as CO, that preserves and protects the heteroatom removal activity during the treatment. This may be achieved in a reactor while it is on-line and removing heteroatoms from a hydrocarbon feed.

## Claims

### Claim 1

A catalyst having activity for both heteroatom removal and hydrogenation and which has been treated with hydrogen, at least one selectively deactivating agent for decreasing hydrogenation activity, and a protective agent that protects and substantially preserves heteroatom removal activity during treatment, said catalyst:
comprising heteroatom removal sites and hydrogenation sites,
is comprised essentially of an oxide of at least one Group VIB metal, an oxide of at least one Group VIII metal, and optionally an inorganic metal oxide support component, and
which is optionally sulfided,
wherein a ratio of deactivated hydrogenation sites to total hydrogenation sites exceeds a ratio of deactivated heteroatom removal sites to total heteroatom removal sites, in the absence of both the protective agent and the at least one selectively deactivating agent.

### Claim 2 (depends on 1)

A catalyst according to claim 1 wherein the catalyst comprises at least one refractory inorganic oxide support.

### Claim 3 (depends on 2)

A catalyst according to claim 2 wherein the refractory inorganic oxide support comprises silica, alumina, or mixtures thereof.

### Claim 4 (depends on 3)

A catalyst according to claim 3 wherein the Group VIII metal is selected from the group consisting of Co, Ni, Fe, Pt, Pd and mixtures thereof.

### Claim 5 (depends on 4)

A catalyst according to claim 4 wherein the Group VIB metal is selected from the group consisting of Mo, W and mixtures thereof.

### Claim 6 (depends on 5)

A catalyst according to claim 5 wherein the Group VIII metal is selected from the group consisting of Co, Ni, Fe and mixtures thereof.

### Claim 7 (depends on 6)

A catalyst according to claim 6 wherein the catalyst support component comprises alumina.