Simultaneous dehydration and skeletal isomerisation of isobutanol on acid catalysts

US9233886B2 · kind B2 · utility

Assignee

• TOTAL RESEARCH & TECHNOLOGY FELUY · BE

Inventors

• Cindy Adam · Wierde, BE
• Delphine Minoux · Nivelles, BE
• Nikolai Nesterenko · Nivelles, BE
• Sander Van Donk · Sainte-Adresse, FR
• Jean-Pierre Dath · Ath, BE

Key dates

• Filing date: Mar 15, 2011
• Grant date: Jan 12, 2016
• Expiry date: Jun 20, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention (in a first embodiment) relates to a process for the simultaneous dehydration and skeletal isomerization of isobutanol to make substantially corresponding olefins, having the same number of carbons and consisting essentially of a mixture of n-butenes and iso-butene, said process comprising: The catalyst is a crystalline silicate of the group FER, MWW, EUO, MFS, ZSM-48, MTT, MFI, MEL or TON having Si/Al higher than 10, Advantageously the stream (B) is fractionated in a step d) to produce a n-butenes stream (N) and to remove the essential part of isobutene optionally recycled with stream (A) to the dehydration/isomerization reactor of step b).