# US 4,399,234 A · Process for preparing gasoline range hydrocarbons from synthesis gas and catalyst used therefor

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- Number: US 4,399,234 A
- Document ID: US4399234A
- Status: Granted
- Kind: A
- Application number: 06/310,972
- Filed: 1981-10-13
- Granted: 1983-08-16
- Earliest claimed: 1981-10-13
- Assignees: Gulf Research & Development Company
- Inventors: Harold Beuther; Charles L. Kibby; Thaddeus P. Kobylinski; Richard B. Pannell
- Web page: https://patentgrep.com/patent/US4399234A

## CPC

- C07C 1/0435: {containing a metal of group 8 or a compound thereof}
- C07C 2521/06: Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- C07C 2523/10: of rare earths
- C07C 2523/12: of actinides
- C07C 2523/83: with rare earths or actinides
- C07C 2529/035: Crystalline silica polymorphs, e.g. silicalites
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

Synthesis gas is converted to a gasoline boiling range product high in branched chain paraffins and olefins utilizing a catalyst consisting essentially of (A) silicalite and (B) cobalt, preferably promoted with a Group IIIB or IVB metal oxide on an alumina support of gamma-alumina, eta-alumina or mixtures thereof.

## Claims

### Claim 1

A process for the conversion of synthesis gas consisting essentially of CO and hydrogen to a product high in branched chain paraffins and olefins in the gasoline boiling range, which comprises contacting said synthesis gas under conversion conditions with a catalyst consisting essentially of an admixture of (A) silicalite and (B) cobalt on a high surface area, high purity, low acidity alumina support of gamma-alumina, eta-alumina or mixtures thereof, said catalyst component (B) having a hydrogen chemisorption value of from about 100 to about 300 micromol of hydrogen per gram of total catalyst when measured at 25.degree. C.

### Claim 2 (depends on 1)

The process of claim 1 wherein said catalyst contains from about 1 to about 90 weight percent silicalite based upon the total catalyst weight.

### Claim 3 (depends on 2)

The process of claim 2 wherein said catalyst contains from about 20 to about 50 weight percent silicalite.

### Claim 4 (depends on 1)

The process of claim 1 wherein said catalyst component (B) comprises cobalt promoted with a Group IIIB or IVB metal oxide.

### Claim 5 (depends on 1)

The process of claim 1 wherein said product contains less than about one weight percent hydrocarbons boiling in the C.sub.11 + range.

### Claim 6 (depends on 1)

The process of claim 1 wherein said catalyst contains from about 0.05 to about 100 parts by weight Group IIIB or IVB metal oxide per 100 parts by weight cobalt.

### Claim 7 (depends on 6)

The process of claim 6 wherein said catalyst contains from about 1 to about 10 parts by weight Group IIIB or IVB metal oxide per 100 parts by weight cobalt.

### Claim 8 (depends on 1)

The process of claim 1 wherein said metal oxide is an oxide of an actinide, a lanthanide or zirconium.

### Claim 9 (depends on 8)

The process of claim 8 wherein said metal oxide is thoria.

### Claim 10 (depends on 8)

The process of claim 8 wherein said metal oxide is lanthana.

### Claim 11 (depends on 1)

The process of claim 1 wherein said support is gamma-alumina.

### Claim 12 (depends on 1)

The process of claim 1 wherein the molar ratio of hydrogen to CO is from about 0.5:1 to about 4:1.

### Claim 13 (depends on 12)

The process of claim 12 wherein the molar ratio of hydrogen to CO is from about 1:1 to about 2.5:1.

### Claim 14 (depends on 1)

The process of claim 1 wherein the synthesis gas conversion conditions include a temperature of from about 160.degree. to about 350.degree. C.

### Claim 15 (depends on 14)

The process of claim 14 wherein said temperature is from about 175.degree. to about 250.degree. C.

### Claim 16 (depends on 1)

The process of claim 1 wherein the total pressure is from about 1 to about 50 atmospheres.