Selective hydrodeoxygenation of levulinic acid to γ-valerolactone over Ru supported on functionalized carbon nanofibers

Bounoukta, Charf Eddine; Sayago, Cristina Megías; Rendón, Nuria; Ammari, Fatima; Penkova, Anna; Ivanova, Svetlana; Centeno, Miguel Ángel; Odriozola, José Antonio

doi:10.1039/d2se01503j

Cited by 4 publications

(1 citation statement)

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“…Reported active metals comprise noble metals such as Ru [ 17 ], Rh [ 18 ], Ir [ 19 ], Pt [ 20 ], and Pd [ 16 , 21 ] and non-noble metals like Ni [ 22 ], Cu [ 23 ], Fe [ 23 ], and Cr [ 24 ]. Among all reported systems, ruthenium-based catalysts in aqueous solution show an inherent ability to hydrogenate the carbonyl functionality of LA at temperatures below 150 °C with high selectivity towards GVL [ 25 , 26 , 27 , 28 , 29 ]. In the presence of Ru, the energy barrier for H-H dissociation is negligible and the intrinsic ability of carbonyl activation is high.…”

Section: Introductionmentioning

confidence: 99%

Functionalized Biochars as Supports for Ru/C Catalysts: Tunable and Efficient Materials for γ-Valerolactone Production

et al. 2023

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Cotton stalks-based biochars were prepared and used to synthetize Ru-supported catalysts for selective production of γ-valerolactone from levulinic acid in aqueous media. Different biochars’ pre-treatments (HNO3, ZnCl2, CO2 or a combination of them) were carried out to activate the final carbonaceous support. Nitric acid treatment resulted in microporous biochars with high surface area, whereas the chemical activation with ZnCl2 substantially increases the mesoporous surface. The combination of both treatments led to a support with exceptional textural properties allowing the preparation of Ru/C catalyst with 1422 m2/g surface area, 1210 m2/g of it being a mesoporous surface. The impact of the biochars’ pre-treatments on the catalytic performance of Ru-based catalysts is fully discussed.

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