# US 4,394,300 A · Zeolite catalyst modified with group IVB metal

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- Number: US 4,394,300 A
- Document ID: US4394300A
- Status: Granted
- Kind: A
- Application number: 06/206,820
- Filed: 1980-11-14
- Granted: 1983-07-19
- Earliest claimed: 1980-04-07
- Assignees: Mobil Oil Corporation
- Inventors: Chin C. Chu; Warren W. Kaeding
- Web page: https://patentgrep.com/patent/US4394300A

## CPC

- C07C 2/864: {the non-hydrocarbon is an alcohol}
- B01J 29/40: of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
- C07C 2/66: Catalytic processes
- C07C 6/123: {of only one hydrocarbon}
- C07C 6/126: {of more than one hydrocarbon}
- B01J 29/65: of the ferrierite type, e.g. types ZSM-21, ZSM-35 or ZSM-38, as exemplified by patent documents US4046859, US4016245 and US4046859, respectively
- B01J 29/70: of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J 2229/20: to introduce other elements in the catalyst composition comprising the molecular sieve, but not specially in or on the molecular sieve itself
- B01J 2229/26: to stabilize the total catalyst structure
- B01J 2229/42: Addition of matrix or binder particles
- C07C 2529/40: of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
- C07C 2529/65: of the ferrierite type, e.g. types ZSM-21, ZSM-35 or ZSM-38
- C07C 2529/70: of types characterised by their specific structure not provided for in groups C07C2529/08 - C07C2529/65
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

A modified zeolite composition useful for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified prior to use by treatment with compounds of germanium, tin and/or lead, and optionally phosphorus, the deposit a minor proportion of such elements on the zeolite.

## Claims

### Claim 1

A catalyst composition comprising:
a crystalline zeolite material characterized by a constraint index of within the approximate range of 1 to 12 and a silica to alumina mole ratio of at least 12;
said zeolite further comprising at least 0.25 weight percent of one or more Group IVB metals incorporated into said zeolite in the form of a Group IVB metal oxide and at least 0.25 weight percent of phosphorus incorporated into said zeolite in the form of an oxide of phosphorus.

### Claim 2 (depends on 1)

The composition of claim 1 wherein said Group IVB metal is germanium.

### Claim 3 (depends on 2)

The composition of claim 2 wherein said germanium comprises between 1 and 15 weight percent of said composition.

### Claim 4 (depends on 1)

The composition of claim 1 wherein said Group IVB metal is tin.

### Claim 5 (depends on 4)

The composition of claim 4 wherein said tin comprises between 1 and 25 weight percent of said composition.

### Claim 6 (depends on 1)

The composition of claim 1 wherein said Group IVB metal is lead.

### Claim 7 (depends on 6)

The composition of claim 6 wherein said lead comprises between 1 and 40 weight percent of said zeolite.

### Claim 8 (depends on 1, 2, 3, 4, 5, 6, 7)

The composition of claim 1, 2, 3, 4, 5, 6 or 7 wherein said zeolite is chosen from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.

### Claim 9 (depends on 8)

The composition of claim 8 wherein said zeolite is ZSM-5.

### Claim 10 (depends on 8)

The composition of claim 8 wherein said zeolite is ZSM-11.

### Claim 11 (depends on 8)

The composition of claim 8 wherein said zeolite is admixed with a binder therefor.