Selective ethylbenzene disproportionation processes (SEBDP) with ex situ selectivated zeolite catalyst

US5406015A · kind A · utility

Assignee

• Mobil Oil Corporation · US

Inventors

• Jeffrey S. Beck · Princeton, US
• Sharon B. McCullen · Newtown, US
• David H. Olson · Pennington, US
• Chaya R. Venkat · Princeton, US

Key dates

• Filing date: May 28, 1993
• Grant date: Apr 11, 1995
• Expiry date: May 28, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2529/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for shape selective hydrocarbon conversion that involves contacting a hydrocarbon feedsteam, including ethylbenzene, under conversion conditions with a catalytic molecular sieve which has been modified by being ex situ selectivated with a silicon compound. The ex situ selectivation involves exposing the molecular sieve to at least two silicon impregnation sequences, each sequence comprising an impregnation with a silicon compound followed by calcination. The modified catalyst used in the process may also be steamed. Optionally, the modified catalyst may be trim-selectivated.