TiO2 supported Ru catalysts for the hydrogenation of succinic acid: influence of the support

Magdalena Brzezinska; Johannes Niemeier; Yannik Louven; Nicolas Keller; Regina Palkovits; Agnieszka M. Ruppert

doi:10.1039/D0CY01446J

TiO₂ supported Ru catalysts for the hydrogenation of succinic acid: influence of the support†

Magdalena Brzezinska,^a Johannes Niemeier,^b Yannik Louven,

^b Nicolas Keller,

^c Regina Palkovits

^b and Agnieszka M. Ruppert

*^a

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* Corresponding authors

^a Institute of General and Ecological Chemistry, Faculty of Chemistry, Łódź University of Technology, ul. Żeromskiego 116, 90-924 Łódź, Poland
E-mail: agnieszka.ruppert@p.lodz.pl
Fax: +48426313128
Tel: +48426313106

^b Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany

^c Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, ICPEES, CNRS, University of Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France

Abstract

Succinic acid is a valuable biomass-derived platform molecule, which can be further catalytically converted into many industrially relevant molecules such as γ-butyrolactone, 1,4-butanediol or tetrahydrofuran. The influence of the support nature on both the activity of Ru/TiO₂ catalysts and the selectivity pattern in the hydrogenation of succinic acid was investigated, with focus on the metal–support interaction, the crystallographic structure of the TiO₂ support and the supported Ru nanoparticle size features. We showed that the catalyst activity was related to both the Ru particle size and the metal support interaction, those features being induced by the presence of the rutile phase within the TiO₂ support and by the preparation method of the supported Ru particles. The rutile phase not only favors the formation of small Ru particles but also promotes stronger metal–support interaction compared with the anatase polymorph. Strong interactions between metal and support can also be formed via thermal reduction in contrast to low-temperature direct chemical reduction. Interestingly, a low temperature solar photon-assisted synthesis method facilitates very high succinic acid conversion, by enabling the stabilization of 1.8 nm small-size Ru nanoparticles in the absence of any rutile phase within the TiO₂ support.

This article is part of the themed collection: Catalysis Science & Technology 10th Anniversary Symposium

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Article information

DOI: https://doi.org/10.1039/D0CY01446J
Article type: Paper
Submitted: 19 Jul 2020
Accepted: 25 Aug 2020
First published: 26 Aug 2020

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Catal. Sci. Technol., 2020,10, 6860-6869

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TiO₂ supported Ru catalysts for the hydrogenation of succinic acid: influence of the support

M. Brzezinska, J. Niemeier, Y. Louven, N. Keller, R. Palkovits and A. M. Ruppert, Catal. Sci. Technol., 2020, 10, 6860 DOI: 10.1039/D0CY01446J

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Catalysis Science & Technology