Imperial College London
Alternate

DrCharlesRomain

Faculty of Natural Sciences, Department of Chemistry

Lecturer in Chemistry
 
 
 
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Contact

 

+44 (0)20 7594 2476c.romain Website CV

 
 
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Location

 

501MMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Vriamont:2019:10.1021/acscatal.8b04714,
author = {Vriamont, CEJJ and Chen, T and Romain, C and Corbett, P and Manageracharath, P and Peet, J and Conifer, CM and Hallett, JP and Britovsek, GJP},
doi = {10.1021/acscatal.8b04714},
journal = {ACS Catalysis},
pages = {2345--2354},
title = {From lignin to chemicals: Hydrogenation of lignin models and mechanistic insights into hydrodeoxygenation via low-temperature C-O bond cleavage},
url = {http://dx.doi.org/10.1021/acscatal.8b04714},
volume = {9},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The catalytic hydrogenation of a series of lignin model compounds, including anisole, guaiacol, 1,2-dimethoxybenzene, 4-propyl-2-methoxyphenol, and syringol, has been investigated in detail, using a Ru/C catalyst in acetic acid as the solvent. Both hydrogenation of the aromatic unit and C–O bond cleavage are observed, resulting in a mixture of cyclohexanes and cyclohexanols, together with cyclohexyl acetates due to esterification with the solvent. The effect on product composition of the reaction parameters temperature (80–140 °C), pressure (10–40 bar), and reaction time (0.5–4 h) has been evaluated in detail. The lignin model compound 4-propyl-2-methoxyphenol was converted to 4-propylcyclohexanol in 4 h at 140 °C and 30 bar of H2 pressure with 84% conversion and 63% selectivity. Mechanistic studies on the reactivity of reaction intermediates have shown that C–O bond cleavage under these relatively mild conditions does not involve a C–O bond hydrogenolysis reaction but is due to elimination and hydrolysis reactions (or acetolysis in acetic acid solvent) of highly reactive cyclohexadiene- and cyclohexene-based enols, enol ethers, and allyl ethers.
AU  - Vriamont,CEJJ
AU  - Chen,T
AU  - Romain,C
AU  - Corbett,P
AU  - Manageracharath,P
AU  - Peet,J
AU  - Conifer,CM
AU  - Hallett,JP
AU  - Britovsek,GJP
DO  - 10.1021/acscatal.8b04714
EP  - 2354
PY  - 2019///
SN  - 2155-5435
SP  - 2345
TI  - From lignin to chemicals: Hydrogenation of lignin models and mechanistic insights into hydrodeoxygenation via low-temperature C-O bond cleavage
T2  - ACS Catalysis
UR  - http://dx.doi.org/10.1021/acscatal.8b04714
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000460600600067&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://pubs.acs.org/doi/10.1021/acscatal.8b04714
UR  - http://hdl.handle.net/10044/1/69605
VL  - 9
ER  -
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