Imperial College London
Prof. David Chadwick

Prof. David Chadwick

Faculty of Engineering, Department of Chemical Engineering

Professor
 
 
 
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Contact

 

+44 (0)20 7594 5579d.chadwick

 
 
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Location

 

235Roderic Hill BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Martins:2017:10.1039/C7RA03318D,
author = {Martins, Lima S and Klaus, Hellgardt KH and David, Chadwick DC},
doi = {10.1039/C7RA03318D},
journal = {RSC Advances},
pages = {31401--31407},
title = {Towards sustainable hydrogenation of 5-(hydroxymethyl)furfural: a two-stage continuous process in aqueous media over Raney catalysts},
url = {http://dx.doi.org/10.1039/C7RA03318D},
volume = {7},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The hydrogenation of 5-(hydroxymethyl)furfural (HMF) to 2,5-bis(hydroxymethyl)tetrahydrofuran (DHMTHF) in aqueous media under relatively mild reaction conditions has been investigated over heterogeneous RANEY® Cu and Ni catalysts using a continuous-flow hydrogenation reactor. These RANEY® catalysts were selected following a screening of several catalysts including precious metals supported on carbon for the hydrogenation of HMF. A single-stage versus a two-stage process for the hydrogenation of HMF into DHMTHF, i.e. via 2,5-dihydroxymethylfuran (DHMF) has been evaluated. The best result with an average selectivity of 98% for DHMTHF was obtained using a two-stage process; RANEY® Cu was used as a catalyst for the highly selective hydrogenation of HMF to DHMF (92 mol%) in the first stage and this product was used without further purification for in a second-stage selective hydrogenation of DHMF into DHMTHF using RANEY® Ni as a catalyst. The influence of the HMF concentration in the feeding solution (1–3 wt%), flow rate (0.05–0.25 mL min−1) and total pressure (20–90 bar) were investigated for the first-stage hydrogenation of HMF into DHMF over RANEY® Cu. HMF was found to exert an inhibiting effect on the conversion due to strong adsorption. The RANEY® Ni catalyst used in the second stage gradually deactivated. A procedure for in situ regeneration of the partially deactivated RANEY® Ni catalyst using acetic acid washing was investigated with limited success.
AU  - Martins,Lima S
AU  - Klaus,Hellgardt KH
AU  - David,Chadwick DC
DO  - 10.1039/C7RA03318D
EP  - 31407
PY  - 2017///
SN  - 2046-2069
SP  - 31401
TI  - Towards sustainable hydrogenation of 5-(hydroxymethyl)furfural: a two-stage continuous process in aqueous media over Raney catalysts
T2  - RSC Advances
UR  - http://dx.doi.org/10.1039/C7RA03318D
UR  - http://hdl.handle.net/10044/1/49126
VL  - 7
ER  -
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