Pt/ZrO2 Prepared by Atomic Trapping: An Efficient Catalyst for the Conversion of Glycerol to Lactic Acid with Concomitant Transfer Hydrogenation of Cyclohexene

Zhenchen Tang, Pei Liu, Huatang Cao, Sara Bals, Hero J. Heeres, Paolo P. Pescarmona*

*Corresponding author voor dit werk

OnderzoeksoutputAcademicpeer review

65 Citaten (Scopus)
261 Downloads (Pure)

Samenvatting

A series of heterogeneous catalysts consisting of highly dispersed Pt nanoparticles supported on nanosized ZrO2 (20 to 60 nm) was synthesized and investigated for the one-pot transfer hydrogenation between glycerol and cyclohexene to produce lactic acid and cyclohexane, without any additional H2. Different preparation methods were screened, by varying the calcination and reduction procedures with the purpose of optimizing the dispersion of Pt species (i.e., as single-atom sites or extra-fine Pt nanoparticles) on the ZrO2 support. The Pt/ZrO2 catalysts were characterized by means of transmission electron microscopy techniques (HAADF-STEM, TEM), elemental analysis (ICP-OES, EDX mapping), N2-physisorption, H2 temperature-programmed-reduction (H2-TPR), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). Based on this combination of techniques it was possible to correlate the temperature of the calcination and reduction treatments with the nature of the Pt species. The best catalyst consisted of subnanometer Pt clusters (
Originele taal-2English
Pagina's (van-tot)9953-9963
Aantal pagina's11
TijdschriftACS Catalysis
Volume9
Nummer van het tijdschrift11
DOI's
StatusPublished - 1-nov.-2019

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