# US 9,040,764 B2 · Catalyst for metathesis of ethylene and 2-butene and/or double bond isomerization

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- Number: US 9,040,764 B2
- Document ID: US9040764B2
- Status: Granted
- Kind: B2
- Application number: 14/076,613
- Filed: 2013-11-11
- Published: 2014-03-06
- Granted: 2015-05-26
- Earliest claimed: 2009-07-21
- Assignees: Lummus Technology Inc.
- Applicants: Lummus Technology Inc.
- Inventors: Bala Ramachandran; Sukwon Choi; Robert J. Gartside; Marvin I. Greene
- Web page: https://patentgrep.com/patent/US9040764B2

## CPC

- C07C 5/2512: {with metal oxides}
- B01J 21/08: Silica
- B01J 21/10: Magnesium; Oxides or hydroxides thereof
- C07C 6/04: at a carbon-to-carbon double bond
- C07C 2521/04: Alumina
- C07C 2521/08: Silica
- C07C 2521/10: Magnesium; Oxides or hydroxides thereof
- C07C 2521/16: Clays or other mineral silicates
- C07C 2523/02: of the alkali- or alkaline earth metals or beryllium
- C07C 2523/04: Alkali metals
- C07C 2523/30: Tungsten
- Y02P 20/52: using catalysts, e.g. selective catalysts
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A process for the double-bond isomerization of olefins is disclosed. The process may include contacting a fluid stream comprising olefins with a fixed bed comprising an activated basic metal oxide isomerization catalyst to convert at least a portion of the olefin to its isomer. The isomerization catalysts disclosed herein may have a reduced cycle to cycle deactivation as compared to conventional catalysts, thus maintaining higher activity over the complete catalyst life cycle.

## Claims

### Claim 1

A process for the double-bond isomerization of olefins, the process comprising:
contacting a fluid stream comprising olefins with a fixed bed comprising an activated basic metal oxide isomerization catalyst comprising a structure stabilizing agent, to convert at least a portion of the olefin to its isomer;
wherein a process for preparing the isomerization catalyst comprises coextruding an admixture of the basic metal oxide and colloidal silica.

### Claim 2 (depends on 1)

The process of claim 1, wherein the basic metal oxide isomerization catalyst comprises at least one of magnesium oxide, calcium oxide, strontium oxide, barium oxide, lithium oxide, and combinations thereof.

### Claim 3 (depends on 1)

The process of claim 1, wherein the basic metal oxide isomerization catalyst comprises magnesium oxide.

### Claim 4 (depends on 1)

The process of claim 1, wherein the structure stabilizing agent comprises at least one of elements Al, Si, Ti, Cr, Mn, Fe, Y, Zr, Mo, and combinations thereof.

### Claim 5 (depends on 1)

The process of claim 1, wherein the catalyst comprises 0.04 weight % to 40 weight % of the structure stabilizing agent.

### Claim 6 (depends on 1)

The process of claim 1, wherein the structure stabilizing agent is in the form of a binder comprising at least one of silica, alumina, and natural clays.

### Claim 7 (depends on 1)

The process of claim 1, wherein the basic metal oxide isomerization catalyst has an effective diameter in the range from about 0.25 mm to about 5.0 mm.

### Claim 8 (depends on 1)

The process of claim 1, wherein the basic metal oxide isomerization catalyst has an effective diameter in the range from about 0.5 mm to about 3.2 mm.

### Claim 9 (depends on 1)

The process of claim 1 wherein the basic metal oxide isomerization catalyst is in the form of a tablet or an extrudate.

### Claim 10 (depends on 1)

The process of claim 1, wherein an initial activity of the basic metal oxide isomerization catalyst is a 2-butene to 1-butene product ratio of at least 3.0, as measured by conversion of pure 1-butene to 2-butene in the presence of at least an equimolar amount of ethylene at a temperature of 600° F. and a pressure of 400 psig.

### Claim 11

A process for the double-bond isomerization of olefins, the process comprising:
contacting a fluid stream comprising olefins with a fixed bed comprising an activated basic metal oxide isomerization catalyst having an effective diameter in the range of 0.25 mm to 4.0 mm to convert at least a portion of the olefin to its isomer;
wherein a process for preparing the isomerization catalyst comprises coextruding an admixture of the basic metal oxide and colloidal silica.

### Claim 12 (depends on 11)

The process of claim 11, wherein the basic metal oxide isomerization catalyst comprises at least one of magnesium oxide, calcium oxide, strontium oxide, barium oxide, lithium oxide, and combinations thereof.

### Claim 13 (depends on 11)

The process of claim 11, wherein the basic metal oxide isomerization catalyst comprises magnesium oxide.

### Claim 14 (depends on 11)

The process of claim 11, wherein the effective diameter of the basic metal oxide isomerization catalyst is in the range from about 0.5 mm to about 3.2 mm.

### Claim 15 (depends on 11)

The process of claim 11 wherein the basic metal oxide isomerization catalyst is in the form of a tablet or an extrudate.