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Citation: Lorenzo Landenna, Alberto Villa, Rodolfo Zanella, Claudio Evangelisti, Laura Prati. Gold-iridium catalysts for the hydrogenation of biomass derived products[J]. Chinese Journal of Catalysis, ;2016, 37(10): 1771-1775. doi: 10.1016/S1872-2067(16)62512-3 shu

Gold-iridium catalysts for the hydrogenation of biomass derived products

a Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, 20133 Milano, Italy;
b Centro de Ciencias Aplicadas y Desarrollo Technologico, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico;
c Istituto di Scienze e Tecnologie Molecolari ISTM-CNR, Via G. Fantoli 16/15, 20138 Milano, Italy

Received Date: 11 May 2016
Revised Date: 9 July 2016

Au-Ir and Au-Ru on TiO₂ catalysts prepared by sequential deposition-precipitation technique were compared with the corresponding monometallics in the hydrogenation of levulinic acid to γ-valerolactone. Interestingly the addition of Au to Ir/TiO₂ showed a detrimental effect on the activity of Ir monometallic catalyst whereas a positive synergistic effect was shown in the case of Ru. Both catalysts were reduced under H₂ to increase the M⁰-Au⁰ interaction. From previous DFT calculations and catalytic test, we addressed the lower activity of Au-Ir/TiO₂ than that of Ir/TiO₂ to the interference of Au into the redox mechanism of Ir atoms.
- Levulinic acid hydrogenation,
- Gold-irdium catalyst,
- Gold-ruthenium catalyst,
- γ-Valerolactone,
- Synergistic effect
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