# US 10,245,581 B2 · Composition and process for preparation of attrition resistant additive suitable for cracking hydrocarbon feed

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- Number: US 10,245,581 B2
- Document ID: US10245581B2
- Status: Granted
- Kind: B2
- Application number: 15/233,485
- Filed: 2016-08-10
- Published: 2017-06-01
- Granted: 2019-04-02
- Earliest claimed: 2015-11-30
- Assignees: Indian Oil Corporation Limited
- Applicants: Indian Oil Corporation Limited
- Inventors: Biswanath Sarkar; Arumugam Velayutham Karthikeyani; Mohan Prabhu Kuvettu; Mahesh Kadgaonkar; Velusamy Chidambaram; Balaiah Swamy; Brijesh Kumar; Biswapriya Das
- Web page: https://patentgrep.com/patent/US10245581B2

## CPC

- 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
- B01J 27/16: containing oxygen {, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr}
- B01J 35/38: Abrasion or attrition resistance
- B01J 37/0009: {Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst}
- B01J 37/0045: {Drying a slurry, e.g. spray drying}
- B01J 37/28: Phosphorising
- C10G 11/05: Crystalline alumino-silicates, e.g. molecular sieves
- B01J 35/33: Electric or magnetic properties
- B01J 35/613: {10-100 m2/g}
- B01J 35/615: {100-500 m2/g}
- B01J 37/04: Mixing {(B01J37/0009, B01J37/0018 take precedence)}
- 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 2229/42: Addition of matrix or binder particles
- C10G 2300/70: Catalyst aspects
- C10G 2400/02: Gasoline
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- 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 present invention relates to attrition resistant hydrocarbon cracking catalyst additive composition comprising aluminum phosphate binder for cracking of hydrocarbon molecules to produce light olefins and process of preparation thereof. The present invention further relates to the process of preparation of the aluminum phosphate binder wherein said binder is incorporated into the ZSM-5 additive composition to enhance its attrition resistance property as well as enhance selectivity and activity of additive composition for production of light olefins such as liquefied petroleum gas (LPG).

## Claims

### Claim 1

An attrition resistant hydrocarbon cracking catalyst additive composition comprising an aluminium phosphate binder, wherein said aluminium phosphate binder has zeta potential in the range of −40 mv to −60 mv in liquid form and a surface area in the range of 80-200 m2/gm in dry form;
wherein said additive composition comprises:
a) 10-70 wt % ZSM-5 zeolite;
b) 5-12 wt % of the aluminium phosphate binder;
c) 5-20 wt % colloidal silica;
d) 10-60 wt % clay; and
e) 1-12 wt % phosphate.

### Claim 2 (depends on 1)

The composition as claimed in claim 1, wherein said additive has Attrition Index (ASTM D5757) below 5 and ABD above 0.75 g/cm3.

### Claim 3 (depends on 1)

The composition as claimed in claim 1, wherein said aluminium phosphate binder is prepared by reacting an aluminium compound with an acidic phosphate compound and at least one basic phosphate compound.

### Claim 4 (depends on 3)

The composition as claimed in claim 3, wherein the aluminium compound is selected from the group comprising of aluminium nitrate, aluminium chloride, aluminium sulfate and aluminium acetate.

### Claim 5 (depends on 3)

The composition as claimed in claim 3, wherein the acidic phosphate compound is phosphoric acid and said basic phosphate compound is selected from di-ammonium hydrogen phosphate, mono-ammonium di-hydrogen phosphate or mixture thereof.