Luo, W;
Sankar, M;
Beale, AM;
He, Q;
Kiely, CJ;
Bruijnincx, PC;
Weckhuysen, BM;
(2015)
High performing and stable supported nano-alloys for the catalytic hydrogenation of levulinic acid to γ-valerolactone.
Nature Communincations
, 6
, Article 6540. 10.1038/ncomms7540.
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High performing and stable supported nano-alloys for the catalytic hydrogenation of levulinic acid to γ-valerolactone.pdf Download (2MB) | Preview |
Abstract
The catalytic hydrogenation of levulinic acid, a key platform molecule in many biorefinery schemes, into γ-valerolactone is considered as one of the pivotal reactions to convert lignocellulose-based biomass into renewable fuels and chemicals. Here we report on the development of highly active, selective and stable supported metal catalysts for this reaction and on the beneficial effects of metal nano-alloying. Bimetallic random alloys of gold-palladium and ruthenium-palladium supported on titanium dioxide are prepared with a modified metal impregnation method. Gold-palladium/titanium dioxide shows a marked,~27-fold increase in activity (that is, turnover frequency of 0.1 s(-1)) compared with its monometallic counterparts. Although ruthenium-palladium/titanium dioxide is not only exceptionally active (that is, turnover frequency of 0.6 s(-1)), it shows excellent, sustained selectivity to γ-valerolactone (99%). The dilution and isolation of ruthenium by palladium is thought to be responsible for this superior catalytic performance. Alloying, furthermore, greatly improves the stability of both supported nano-alloy catalysts.
| Type: | Article |
|---|---|
| Title: | High performing and stable supported nano-alloys for the catalytic hydrogenation of levulinic acid to γ-valerolactone. |
| Location: | England |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1038/ncomms7540 |
| Publisher version: | http://dx.doi.org/10.1038/ncomms7540 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Chemical sciences; Catalysis; Materials science; Physical chemistry |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1473187 |
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