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Navigating Glycerol Conversion Roadmap and Heterogeneous Catalyst Selection Aided by Density Functional Theory: A Review
Open AccessFeature PaperArticle

Exploring the Effect of Au/Pt Ratio on Glycerol Oxidation in Presence and Absence of a Base

Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, I-20133 Milano, Italy
Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
Authors to whom correspondence should be addressed.
Catalysts 2018, 8(2), 54;
Received: 24 December 2017 / Revised: 26 January 2018 / Accepted: 29 January 2018 / Published: 31 January 2018
(This article belongs to the Special Issue Glycerol Conversion by Heterogeneous Catalysis)
Bimetallic AuPt nanoparticles with different Au:Pt ratios (molar ratio: 9-1, 8-2, 6-4, 2-8, 1-9) and the corresponding Au and Pt monometallic ones were prepared by sol immobilization and immobilized on commercial TiO2 (P25). The catalytic activity was evaluated in the liquid phase glycerol oxidation in presence and absence of a base (NaOH). It was found that the Au:Pt molar ratio and reaction conditions strongly influence the catalytic performance. In the presence of NaOH, Au-rich catalysts were more active than Pt-rich ones, with the highest activity observed for Au9Pt1/TiO2 (6575 h−1). In absence of a base, a higher content of Pt is needed to produce the most active catalyst (Au6Pt4/TiO2, 301 h−1). In terms of selectivity, in presence of NaOH, Au-rich catalysts showed a high selectivity to C3 products (63–72%) whereas Pt-rich catalysts promote the formation of formic and glycolic acids. The opposite trend was observed in absence of a base with Pt-rich catalysts showing higher selectivity to C3 products (83–88%). View Full-Text
Keywords: gold-platinum; glycerol oxidation; base; base free gold-platinum; glycerol oxidation; base; base free
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MDPI and ACS Style

Villa, A.; Jouve, A.; Sanchez Trujillo, F.J.; Motta, D.; Prati, L.; Dimitratos, N. Exploring the Effect of Au/Pt Ratio on Glycerol Oxidation in Presence and Absence of a Base. Catalysts 2018, 8, 54.

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