TY - JOUR

T1 - Carbon supported size-controlled ru catalysts for selective levulinic acid hydrogenation into γ-valerolactone

AU - Simakova, Irina L.

AU - Demidova, Yuliya S.

AU - Simonov, Mikhail N.

AU - Niphadkar, Prashant S.

AU - Bokade, Vijay V.

AU - Devi, Nandini

AU - Dhepe, Paresh L.

AU - Murzin, Dmitry Yu

N1 - Simakova I.L., Demidova Yu.S., Simonov M.N., Niphadkar P.S., Bokade V.V., Devi N., Dhepe P.L., Murzin D.Yu. Carbon supported size-controlled Ru catalysts for selective levulinic acid hydrogenation into γ-valerolactone. J. Sib. Fed. Univ. Chem., 2020, 13(1), 5-16 Funding Information: This work was supported by RFBR Grant 18-53-45013 IND_a and INT/RUS/RFBR/P-323 project. Part of work (XRF and N2 physisorption) was supported by Ministry of Science and Higher Education of the Russian Federation (project АААА-А17-117041710075-0). Publisher Copyright: © Siberian Federal University. All rights reserved Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020

Y1 - 2020

N2 - Liquid phase levulinic acid hydrogenation into γ-valerolactone in 1,4-dioxane as a solvent (165°C, 20 bar) was studied over a range of Ru monometallic catalysts using mesoporous carbon material Sibunit as a support. In addition to the catalyst prepared by impregnation with RuCl3∙nH2O (0.1 M) followed by reduction in H2, size-controlled Ru(NPs)/Sibunit catalysts were synthesized by immobilization of polyvinylpyrrolidone (PVP) stabilized Ru nanoparticles (NPs) (dRu=2.4 nm). Сarbon supported colloidal Ru NPs were not studied earlier in levulinic acid hydrogenation. Activity of colloidal Ru(NPs)/Sibunit catalysts was found to be lower than that of impregnated Ru/Sibunit which could be attributed to hampering effect of PVP. However, colloidal Ru(NPs)/Sibunit purified by thermal treatment in air (180°C) followed by reduction in H2 (400°C) exhibited the same activity as impregnated one yielding 93% γ-valerolactone at 100% levulinic acid conversion. Applicability of supported PVP-assisted colloidal Ru NPs in hydrogenation of levulinic acid illustrates a potential to prepare more efficient catalysts for this reaction with a desired particle size. The catalysts were characterized by TEM, XRF, and N2 physisorption to compare their physical chemical properties.

AB - Liquid phase levulinic acid hydrogenation into γ-valerolactone in 1,4-dioxane as a solvent (165°C, 20 bar) was studied over a range of Ru monometallic catalysts using mesoporous carbon material Sibunit as a support. In addition to the catalyst prepared by impregnation with RuCl3∙nH2O (0.1 M) followed by reduction in H2, size-controlled Ru(NPs)/Sibunit catalysts were synthesized by immobilization of polyvinylpyrrolidone (PVP) stabilized Ru nanoparticles (NPs) (dRu=2.4 nm). Сarbon supported colloidal Ru NPs were not studied earlier in levulinic acid hydrogenation. Activity of colloidal Ru(NPs)/Sibunit catalysts was found to be lower than that of impregnated Ru/Sibunit which could be attributed to hampering effect of PVP. However, colloidal Ru(NPs)/Sibunit purified by thermal treatment in air (180°C) followed by reduction in H2 (400°C) exhibited the same activity as impregnated one yielding 93% γ-valerolactone at 100% levulinic acid conversion. Applicability of supported PVP-assisted colloidal Ru NPs in hydrogenation of levulinic acid illustrates a potential to prepare more efficient catalysts for this reaction with a desired particle size. The catalysts were characterized by TEM, XRF, and N2 physisorption to compare their physical chemical properties.

KW - Effect of polyvinylpyrrolidone

KW - Gamma-valerolactone

KW - Hydrogenation

KW - Levulinic acid

KW - Ru catalysts

KW - Ru colloidal nanoparticles

KW - Size effect

KW - levulinic acid

KW - hydrogenation

KW - gamma-valerolactone

KW - Ru catalysts

KW - Ru colloidal nanoparticles

KW - effect of polyvinylpyrrolidone

KW - size effect

UR - http://www.scopus.com/inward/record.url?scp=85097798504&partnerID=8YFLogxK

UR - https://www.elibrary.ru/item.asp?id=42647331

U2 - 10.17516/1998-2836-0166

DO - 10.17516/1998-2836-0166

M3 - Article

AN - SCOPUS:85097798504

VL - 13

SP - 5

EP - 16

JO - Журнал Сибирского федерального университета. Серия: Химия.

JF - Журнал Сибирского федерального университета. Серия: Химия.

SN - 1998-2836

IS - 1

M1 - 1

ER -