# US 8,772,560 B2 · Modified zeolite catalyst useful for the conversion of paraffins, olefins and aromatics in a mixed feedstock into isoparaffins and a process thereof

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- Number: US 8,772,560 B2
- Document ID: US8772560B2
- Status: Granted
- Kind: B2
- Application number: 13/729,962
- Filed: 2012-12-28
- Published: 2013-05-16
- Granted: 2014-07-08
- Earliest claimed: 2008-03-26
- Assignees: Council of Scientific and Industrial Research
- Applicants: Council of Scientific & Industrial Research
- Inventors: Viswanadham Nagabhatla; Raviraj Kamble; Amit Sharma; Jagdish Kumar; Bhagwan Singh Negi; Murali Dhar Gudimella; Madhukar Onkarnath Garg
- Web page: https://patentgrep.com/patent/US8772560B2

## CPC

- B01J 29/068: Noble metals
- B01J 29/44: Noble metals
- B01J 35/60: characterised by their surface properties or porosity
- C07C 5/13: with simultaneous isomerisation
- C10G 45/62: containing platinum group metals or compounds thereof
- C10G 45/64: containing crystalline alumino-silicates, e.g. molecular sieves
- B01J 35/394: {Metal dispersion value, e.g. percentage or fraction}
- B01J 35/615: {100-500 m2/g}
- B01J 35/633: {less than 0.5 ml/g}
- B01J 2229/186: not in framework positions
- B01J 2229/36: Steaming
- B01J 2229/37: Acid treatment
- B01J 2229/42: Addition of matrix or binder particles
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- 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

## Abstract

The invention relates to a modified zeolite catalyst, useful for the conversion of paraffins, olefins and aromatics in a mixed feedstock such as FCC gasoline that contain high content of olefin, aromatic and n-paraffin into isoparaffins. The invention further relates to the use of such a catalyst, for example but not limited to, in a process for the conversion of paraffins, olefins and aromatics in a mixed feedstock into the product having high amount of branched paraffins with decreased aromatics and olefins, a useful gasoline blend, with negligible production of lighter gases.

## Claims

### Claim 1

A process for the conversion of paraffins, olefins and aromatics in a mixed feedstock into isoparaffins, comprising feeding FCC gasoline having paraffin, iso-paraffin, olefin, naphthenes and aromatics into the fixed bed down flow reactor containing a modified mordenite catalyst comprising noble metals in the range of 0.1 to 1 wt %, under hydrogen flow, at a temperature in the range of 225-375° C., at a pressure in the range of 5-35 bar, at a space velocity of 1-6 h−1, followed by cooling of the gaseous product at the reactor tail to obtain the desired product, wherein the mordenite zeolite based catalyst comprises:
Zeolite: in the range of 59-60 wt %;
Pseudo extrude: in the range of 39-40 wt %;
Pt: in the range of 0.1-1.0 wt %; and
Pd: in the range of 0-1.0 wt %,
and said catalyst has the following characteristics:
Si/Al: in the range of 16-80;
BET surface area (m2/g): n the range of 200-350;
Micropore area (m2/g): in the range of 155-250;
External pore area (m2/g): in the range of 90-135;
Pore volume (cc/g): in the range of 0.30-0.50
Acidity (m·mol/g·catal): in the range of 1.40-1.60;
Strong (>120 kJ/mol): in the range of 0.40-0.60;
Medium (120-80 kJ/mol): in the range of 0.45-0.50;
Weak (<80 kJ/mol): in the range of 0.40-0.60; and
Pt dispersion (%): in the range of 60-80.

### Claim 2 (depends on 1)

The process of claim 1, wherein the modified catalyst comprises:
Zeolite:
59.8 wt %
Pseudo extrude:
39.7 wt %
Pt:
0.3 wt %
Pd:
0.2 wt %.

### Claim 3 (depends on 1)

The process of claim 1, wherein the modified catalyst has the following characteristics:
Si/Al
39
BET surface area (m2/g)
347
Micropore area (m2/g)
248
External pore area (m2/g)
99
Pore volume (cc/g)
0.4734
Acidity (m · mol/g · catal)
1.48
Strong (>120 kJ/mol)
0.58
Medium (120-80 kJ/mol)
0.49
Weak (<80 kJ/mol)
0.41
Pt dispersion (%)
78.

### Claim 4 (depends on 1)

The process of claim 1, wherein the feed stock used contains about 80% olefins and about 60% aromatics.

### Claim 5 (depends on 1)

The process of claim 1, wherein the feed stock used has an octane number of 69 RON.

### Claim 6 (depends on 1)

The process of claim 1, wherein the octane number of the gasoline obtained is increased by 20-40% as compared to initial RON number.

### Claim 7 (depends on 1)

The process of claim 1, wherein the hydro conversion of the feedstock results in an increase in octane number in the range of 10 to 15 units of RON.

### Claim 8 (depends on 1)

The process of claim 1, wherein the branched paraffins obtained in the final product is increased by 30-70% as compared to isoparaffins present in the feedstock.