Combining Bio- and Chemo-Catalysis for the Conversion of Bio-Renewable Alcohols: Homogeneous Iridium Catalysed Hydrogen Transfer Initiated Dehydration of 1,3-Propanediol to Aldehydes

Authors: Yue-Ming Wang,a,b Fabio Lorenzini,a Martin Rebros,c Graham C. Saunders,d
and Andrew C. Marr.a,b

a School of Chemistry and Chemical Engineering, Queen’s University of Belfast, UK.
b Queen’s University Ionic Liquids Laboratories (QUILL), UK.
c Institute of Biotechnology and Food Science, Faculty of Chemical and Food Technology,
Slovak University of Technology, Bratislava, Slovakia.
d School of Science, The University of Waikato, Hamilton 3240, New Zealand.

Type of publication: Article
Date: November 2015
Journal: Green Chemistry, 2015, DOI: 10.1039/C5GC02157J
Main partner: QUB and STUBA

Abstract: Combining whole cell biocatalysis and chemocatalysis in a single reaction sequence
avoids unnecessary separations, and the associated waste and energy consumption. Bacterial
fermentation has been employed to convert waste glycerol from biodiesel production into
1,3-propanediol. This 1,3-propanediol can be extracted selectively from the aqueous
fermentation broth using ionic liquids. 1,3-propanediol in ionic liquid solution was converted
to propionaldehyde by hydrogen transfer initiated dehydration (HTID) catalysed by a
Cp*IrCl2(NHC) (Cp* = pentamethylcyclopentadienyl; NHC = carbene ligand) complex. The
use of an ionic liquid solvent enabled the reaction to be performed under reduced pressure,
facilitating the isolation of the product, and improving the reaction selectivity. The Ir(III)
catalyst in ionic liquid was found to be highly recyclable.

The paper is available in the Royal Society of Chemistry website here.

more...

  • Grail Eu Project: Glycerol Biorefinery Approach for the Production of High Quality Products of Industrial Value

    May 27, 2016

    The article entitled: “Grail Eu Project: Glycerol Biorefinery Approach for the Production of High Quality Products of Industrial Value” has been published and is available online on Bulletin UASVM Food Science and Technology 73(1) / 2016; ISSN-L 2344-2344; Print ISSN 2344-2344; Electronic ISSN 2344-5300, DOI: 10.15835/buasvmcn-fst:11904. Authors: Monica Trif, Berta Álvarez Penedo, Alexandru Rusu Type […]

    more...

  • Photos of the GRAIL Open Day – Brussels (Belgium) – March 9th, 2016

    March 10, 2016

    The GRAIL technical meeting and the GRAIL Open Day took place in Brussels on March 8th and 9th, 2016. Please find below some pictures of the event

    more...

  • GRAIL e-NEWSLETTER #3 – February 2016

    March 4, 2016

    Project Progress  BIOTRANSFORMATION OF GLYCEROL TO BIOFUELS The biological processes for the biofuel productions are proceeding with the optimization of the different procedures. Hydrogen, ethanol and butanol were produced through different ways of fermentation (batch, fed-batch and continuous), using different type of crude glycerol as substrates. A meeting among WP2 partners will be held on the […]

    more...

  • GRAIL Open Day – Brussels (Belgium) – March 9th, 2016

    March 4, 2016

    The GRAIL project Open Day will be held the 9th of March in Brussels (Belgium) at ENEA’s facilities. The GRAIL open day is a dissemination event about the project designed to create awareness about it and its impact to key stakeholders of the field. At this event, different experts from biodiesel industry, politicians, etc. have […]

    more...