Photocatalytic decarboxylation of lactic acid by Pt/TiO2

Kaituo Liu; Anton Litke; Yaqiong Su; Bart G. van Campenhout; Evgeny A. Pidko; Emiel J. M. Hensen

doi:10.1039/C6CC06530A

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Photocatalytic decarboxylation of lactic acid by Pt/TiO₂†

Kaituo Liu,^a Anton Litke,^a Yaqiong Su,^a Bart G. van Campenhout,^a Evgeny A. Pidko

*^ab and Emiel J. M. Hensen*^a

Author affiliations

* Corresponding authors

^a Inorganic Materials Chemistry group, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
E-mail: e.a.pidko@tue.nl, e.j.m.hensen@tue.nl

^b Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands

Abstract

A photocatalytic route for the conversion of lactic acid to acetaldehyde in water is demonstrated. Direct UV photolysis of lactic acid yields CO₂ and ethanol via a radical mechanism. Pt/TiO₂ considerably increases the rate of lactic acid decarboxylation with acetaldehyde, H₂ and CO₂ as the main products. A concerted photodecarboxylation/dehydrogenation mechanism is proposed.

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Article information

DOI: https://doi.org/10.1039/C6CC06530A
Article type: Communication
Submitted: 08 Aug 2016
Accepted: 16 Aug 2016
First published: 16 Aug 2016

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Chem. Commun., 2016,52, 11634-11637

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Photocatalytic decarboxylation of lactic acid by Pt/TiO₂

K. Liu, A. Litke, Y. Su, B. G. van Campenhout, E. A. Pidko and E. J. M. Hensen, Chem. Commun., 2016, 52, 11634 DOI: 10.1039/C6CC06530A

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