Regenerating zeolitic cracking catalyst

USRE37842E1 · kind E1 · reissue

Assignee

• Phillips Petroleum Company · US

Inventors

• Brent J. Bertus · Bartlesville, US
• Harold W. Mark · Bartlesville, US
• John S. Roberts · Honeoye Falls, US
• Arnold M. Schaffer · Bartlesville, US

Key dates

• Filing date: May 9, 1996
• Grant date: Sep 17, 2002
• Expiry date: May 9, 2016

Classification

• Technology area (CPC —): General

Abstract

A method for countering the adverse effect of contaminating metals on a cystalline aluminosilicate catalyst comprising contacting the catalyst <INS-S DATE="20020917" ID="INS-S-00001"/>with a metallic passivating agent to effect some passivation of the effects of the contaminant metals and <INS-E ID="INS-S-00001"/>with a reducing gas under suitable conditions. In a preferred embodiment, the catalyst contains antimony.