Process for the preparation of a catalyst composite

US6528447B1 · kind B1 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Sobhan Ghosh · Faridabad, IN
• Satish Makhija · Barwala, IN
• Venkatachalam Krishnan · Faridabad, IN
• Sanjay Kumar Ray · Barwala, IN
• Mohan Prabhu Kuvettu · Barwala, IN

Key dates

• Filing date: Mar 19, 1999
• Grant date: Mar 4, 2003
• Expiry date: Mar 19, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J21/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for preparing a hydrocarbon conversion catalyst for use in a Fluid Catalyst Cracking (FCC) unit includes the steps of preparing a modified alumina-silica composite by reacting alumina with an acid to obtain an acidified alumina, aging the acidified alumina for from 0.25 to 60 hours, adding a silica source to the acidified alumina to obtain the composite; preparing a dispersed precursor slurry of the modified alumina-silica composite, and a rare earth exchanged USY zeolite (REUSY) containing at least one rare earth oxide present in an amount ranging from 3.8 to 4.0 wt %, and optionally kaolin clay; spray-drying the slurry to obtain spherical particles; and subjecting the spherical particles to calcination.