Dehydration of alcohols on a crystalline silicate of low Si/Al ratio

US9505673B2 · kind B2 · utility

Assignee

• TOTAL RESEARCH & TECHNOLOGY FELUY · BE

Inventors

• Delphine Minoux · Nivelles, BE
• Nikolai Nesterenko · Nivelles, BE
• Cindy Adam · Wierde, BE
• Sander Van Donk · Sainte-Adresse, FR
• Walter Vermeiren · Houthalen-Helchteren, BE

Key dates

• Filing date: Jul 23, 2015
• Grant date: Nov 29, 2016
• Expiry date: Jul 23, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/584
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A process for the dehydration of an alcohol having at least 2 carbon atoms to make a corresponding olefin may include introducing in a reactor a stream (A) containing the alcohol, optionally water, and optionally an inert component. The stream (A) may be contacted with a catalyst in the reactor at conditions effective to dehydrate at least a portion of the alcohol to make the corresponding olefin. The process includes recovering from the reactor an olefin containing stream (B). The catalyst may be a crystalline silicate, dealuminated crystalline silicate, or phosphorus modified crystalline silicate, each of the group FER, MWW, EUO, MFS, ZSM-48, MTT or TON having Si/Al ranging from 25 to 90. The weight hourly space velocity (WHSV) of the alcohol may be at least 4 h−1. The temperature may range from 280° C. to 600° C., or from 320° C. to 600° C.