Production of catalysts for olefin conversion

US6713658B1 · kind B1 · utility

Assignee

• Fina Research, S.A. · BE

Inventors

• Jean-Pierre Dath · Ath, BE
• Luc Delorme · Waterloo, BE
• Jacques Grootjans · Leefdaal, BE
• Xavier Vanhaeren · Genval, BE
• Walter Vermeiren · Houthalen-Helchteren, BE

Key dates

• Filing date: Dec 5, 1998
• Grant date: Mar 30, 2004
• Expiry date: Dec 5, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2229/42
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for producing a catalyst for olefin cracking, the process comprising the steps of providing an MFI-type crystalline silicate catalyst, heating the catalyst in steam to remove aluminum from the crystalline silicate framework and extracting aluminum from the catalyst by contacting the catalyst with a complexing agent for aluminum to remove from pores of the framework aluminum deposited therein during the steaming step thereby to increase the silicon/aluminum atomic ratio of the catalyst; and calcining the catalyst at elevated temperature.