Mesoporous Activated Carbon Supported Ru Catalysts to Efficiently Convert Cellulose into Sorbitol by Hydrolytic Hydrogenation

Fatima-Zahra Azar, M. Ángeles Lillo-Ródenas and M. Carmen Román-Martínez
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Fatima-Zahra Azar: MCMA Group, Department of Inorganic Chemistry and Materials Institute, Faculty of Sciences, University of Alicante, Ap. 99, E-03080 Alicante, Spain
M. Ángeles Lillo-Ródenas: MCMA Group, Department of Inorganic Chemistry and Materials Institute, Faculty of Sciences, University of Alicante, Ap. 99, E-03080 Alicante, Spain
M. Carmen Román-Martínez: MCMA Group, Department of Inorganic Chemistry and Materials Institute, Faculty of Sciences, University of Alicante, Ap. 99, E-03080 Alicante, Spain

Energies, 2020, vol. 13, issue 17, 1-14

Abstract: Catalysts consisting of Ru nanoparticles (1 wt%), supported on mesoporous activated carbons (ACs), were prepared and used in the one-pot hydrolytic hydrogenation of cellulose to obtain sorbitol. The carbon materials used as supports are a pristine commercial mesoporous AC (named SA), and two samples derived from it by sulfonation or oxidation treatments (named SASu and SAS, respectively). The catalysts have been thoroughly characterized regarding both surface chemistry and porosity, as well as Ru electronic state and particle size. The amount and type of surface functional groups in the carbon materials becomes modified as a result of the Ru incorporation process, while a high mesopore volume is preserved upon functionalization and Ru incorporation. The prepared catalysts have shown to be very active, with cellulose conversion close to 50% and selectivity to sorbitol above 75%. The support functionalization does not lead to an improvement of the catalysts’ behavior and, in fact, the Ru/SA catalyst is the most effective one, with about 50% yield to sorbitol, and a very low generation of by-products.

Keywords: Ru nanoparticles; activated carbon; one-pot hydrolytic hydrogenation; cellulose conversion; sorbitol (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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