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HERO ID
4684065
Reference Type
Journal Article
Title
Tetrabutylphosphonium Bromide Catalyzed Dehydration of Diols to Dienes and Its Application in the Biobased Production of Butadiene
Author(s)
Stalpaert, M; Cirujano, FG; De Vos, DE
Year
2017
Journal
ACS Catalysis
ISSN:
2155-5435
Volume
7
Issue
9
Page Numbers
5802-5809
DOI
10.1021/acscatal.7b01765
Web of Science Id
WOS:000410005700026
Abstract
We report the use of the ionic liquid tetrabutylphosphonium bromide as a solvent and catalyst for dehydration of diols to conjugated dienes. This system combines stability, high reaction rates, and easy product separation. A reaction mechanism for the model compound 1,2-hexanediol is proposed and experimentally corroborated. This particular mechanism allows for the selective formation of conjugated dienes, in contrast with purely acidic catalysis. Next, the reaction is also performed on various other diols. As a first application, we assessed the biobased production of 1,3-butadiene. With 1,4-butanediol as the starting material, a 94% yield of butadiene was reached at 100% conversion.
Keywords
ionic liquids; phosphonium bromide; diol dehydration; conjugated dienes; 1,4-butanediol; butadiene
Tags
OPPT
•
1,2-Hexanediol
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