Ru-Containing Polymeric Catalysts for Cellulose Conversion to Polyols

Manaenkov, Oleg V.; Matveeva, Valentina G.; Sulman, Esther M.; Филатова, А. Е.; Makeeva, Olga Yu.; Kislitza, Olga V.; Сидоров, А. И.; Doluda, V.

doi:10.1007/s11244-014-0338-9

Cited by 15 publications

(10 citation statements)

References 24 publications

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“…Five wt % Ru/C was obtained from Johnson Matthey Chemical Products and used as received. The Ru catalyst based on hyper-cross-linked polystyrene and denoted 3 wt % Ru/MN270 was synthesized as is described elsewhere …”

Section: Methodsmentioning

confidence: 99%

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Ru-Containing Magnetically Recoverable Catalysts: A Sustainable Pathway from Cellulose to Ethylene and Propylene Glycols

Manaenkov

Mann

Kislitza

et al. 2016

ACS Appl. Mater. Interfaces

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Biomass processing to value-added chemicals and biofuels received considerable attention due to the renewable nature of the precursors. Here, we report the development of Ru-containing magnetically recoverable catalysts for cellulose hydrogenolysis to low alcohols, ethylene glycol (EG) and propylene glycol (PG). The catalysts are synthesized by incorporation of magnetite nanoparticles (NPs) in mesoporous silica pores followed by formation of 2 nm Ru NPs. The latter are obtained by thermal decomposition of ruthenium acetylacetonate in the pores. The catalysts showed excellent activities and selectivities at 100% cellulose conversion, exceeding those for the commercial Ru/C. High selectivities as well as activities are attributed to the influence of Fe3O4 on the Ru(0)/Ru(4+) NPs. A facile synthetic protocol, easy magnetic separation, and stability of the catalyst performance after magnetic recovery make these catalysts promising for industrial applications.

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Section: Methodsmentioning

confidence: 99%

“…Scheme depicts pathways for the transformation of cellulose to EG and PG. − This reaction can be carried out as a one-pot process in subcritical water with various heterogeneous catalysts . Ru-containing catalysts are considered to be the most active. ,− …”

Section: Introductionmentioning

confidence: 99%

Ru-Containing Magnetically Recoverable Catalysts: A Sustainable Pathway from Cellulose to Ethylene and Propylene Glycols

Manaenkov

Mann

Kislitza

et al. 2016

ACS Appl. Mater. Interfaces

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“…This reaction can be carried out as a one-pot process in subcritical water with various heterogeneous catalysts (Verendel et al, 2011 ). Ru-containing catalysts are considered the best, but produce mainly sorbitol and mannitol, while EG and PG are obtained in small amounts (Dhepe and Fukuoka, 2007 ; Luo et al, 2007 ; Kobayashi et al, 2011 ; Manaenkov et al, 2014 ). Recently we developed magnetically recoverable catalysts based on mesoporous magnetic silica (Fe 3 O 4 -SiO 2 ) and Ru NPs (Manaenkov et al, 2016 ).…”

Section: Iron Oxide Can Change the Catalytic Reaction Pathwaymentioning

confidence: 99%

“…This leads to the formation of glucose, which easily caramelizes in the absence of hydrogenation catalysts. If suitable Ru-containing catalysts are present, sorbitol is formed (Manaenkov et al, 2014 ). It is noteworthy that at the beginning of the reaction with Ru-Fe 3 O 4 -SiO 2 sorbitol is also formed but it is later consumed to produce EG and PG, revealing that Fe 3 O 4 promotes these transformations, i.e., hydrogenolysis.…”

Section: Iron Oxide Can Change the Catalytic Reaction Pathwaymentioning

confidence: 99%

Magnetically Recoverable Catalysts: Beyond Magnetic Separation

Shifrina

Bronstein

2018

Front. Chem.

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Here, we discuss several important aspects of magnetically recoverable catalysts which can be realized when magnetic oxide nanoparticles are exposed to catalytic species and catalytic reaction media. In such conditions magnetic oxides can enhance performance of catalytic nanoparticles due to (i) electronic effects, (ii) catalyzing reactions which are beneficial for the final reaction outcome, or (iii) providing a capacity to dilute catalytic metal oxide species, leading to an increase of oxygen vacancies. However, this approach should be used when the magnetic oxides are stable in reaction conditions and do not promote side reactions. Incorporation of another active component, i.e., a graphene derivative, in the magnetically recoverable catalyst constitutes a smart design of a catalytic system due to synergy of its components, further enhancing catalytic properties.

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“…The selectivity for 1,2-PG was as high as 60.8% on the Pd-WO x /Al 2 O 3 catalyst, which was attributed to the isomerization of glucose to fructose by the rich Lewis acid sites on the catalyst . Moreover, it is reported that the Ru-containing catalyst is the most active for the conversion of cellulose to EG and 1,2-PG and has been widely used as the selective hydrogenation catalysts. − In this process of cellulose hydrogenolysis involving several individual reactions, the synergism due to the simultaneous presence of acidic sites and hydrogenation active sites may result in equilibrium of rate-matching between the various reactions, which is beneficial for the selectivity of the whole reaction.…”

Section: Introductionmentioning

confidence: 99%

Magnetically Recoverable Bifunctional Catalysts for the Conversion of Cellulose to 1,2-Propylene Glycol

Xin

Yin

et al. 2020

ACS Sustainable Chem. Eng.

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The use of cellulose instead of oil to produce 1,2-propylene glycol (1,2-PG) is of great significance for building a sustainable world. Herein, we synthesize Fe3O4@SiO2/Ru-WO x core–shell magnetically recoverable catalysts containing both Lewis acid and metal active sites using well-shaped Fe3O4@SiO2 core–shell magnetic nanospheres as the substrate. We investigated the catalytic performances of the bimetallic catalysts with various metals as well as different metal contents and WO x loadings for the conversion of cellulose to 1,2-PG. The results showed that Fe3O4@SiO2/10%Ru-20%WO x was more favorable for 1,2-PG production, with a 1,2-PG selectivity of 32.4% and a cellulose conversion of 96.8%. Our characterization and activity tests suggested that WO x on the Fe3O4@SiO2 nanospheres produced abundant Lewis acid sites to effectively promote glucose isomerization to fructose before glucose undergoes the retro-aldol condensation reaction. Moreover, the Ru further hydrogenated the C3 intermediate to 1,2-PG. It was notable that the catalyst can be separated through a simple magnetic separation after the end of the reaction, and it still maintained high catalytic activity after 5 uses.

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Ru-Containing Polymeric Catalysts for Cellulose Conversion to Polyols

Cited by 15 publications

References 24 publications

Ru-Containing Magnetically Recoverable Catalysts: A Sustainable Pathway from Cellulose to Ethylene and Propylene Glycols

Ru-Containing Magnetically Recoverable Catalysts: A Sustainable Pathway from Cellulose to Ethylene and Propylene Glycols

Magnetically Recoverable Catalysts: Beyond Magnetic Separation

Magnetically Recoverable Bifunctional Catalysts for the Conversion of Cellulose to 1,2-Propylene Glycol

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