Carbon nanofiber/graphite-felt composite supported Ru catalysts for hydrogenolysis of sorbitol

Zhou, Jinghong; Zhang, M.G.; Zhao, Le; Li, P.; Zhou, Xin; Wang, Yuan

doi:10.1016/j.cattod.2009.07.057

Cited by 51 publications

(38 citation statements)

References 23 publications

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“…They also proposed that the main reaction causing C-C bond cleavage in sorbitol hydrogenolysis was a retro-Michael reaction under the action of adsorbed nucleophilic species [10]. Zhao et al [11,12] carried out sorbitol hydrogenolysis over Ru supported on carbon nanofiber and graphite felt composite catalysts and reported 68 % conversion and 79 % propylene glycol selectivity.…”

Section: Introductionmentioning

confidence: 97%

Sorbitol Hydrogenolysis Over Ni, Pt and Ru Supported on NaY

et al. 2012

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The hydrogenolysis of sorbitol into 1,2-propanediol (PD), ethylene glycol (EG) and glycerol (G) was investigated over Ni, Pt and Ru supported on NaY at 220°C and 60 bar in a batch reactor. Ni(6 %)-NaY was investigated in detail at different process conditions, including its recyclability. Attempts have been made to rationalize the experimentally observed conversion and product selectivity obtained over the different catalysts with results of Density Functional Theory calculations of adsorption energy and bond length changes in sorbitol adsorbed over various planes of Ni, Pt and Ru.

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Section: Introductionmentioning

confidence: 97%

Sorbitol Hydrogenolysis Over Ni, Pt and Ru Supported on NaY

et al. 2012

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“…However, handling and separation of these CNMs materials from the filtrate were noted as posing a challenge in the application of nanomaterials in water treatment (Nora and Mamadou, 2005). Success had been made in the synthesis of composite nanoscale carbon materials on a macroscale substrate (Vieira et al, 2004;Pingle and Lefferts, 2006;Zhang et al, 2008;Zhou et al, 2009) which could reduce the challenge with the handling of these nano-size materials, however application of these composite materials in metal removal from solution is yet to be extensively investigated. This work explores the possibilities of synthesizing CNT on GAC to form a composite material CNT-GAC and studying the adsorption mechanism of the nano-size composite adsorbent in the removal of copper, nickel and lead ions from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Heavy metals removal from synthetic wastewater by a novel nano-size composite adsorbent

Onundi

Mamun

Khatib

et al. 2011

Int. J. Environ. Sci. Technol.

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ABSTRACT:The effects of varying operating conditions on metals removal from aqueous solution using a novel nano-size composite adsorbent are reported in this paper. Characterization of the composite adsorbent material showed successful production of carbon nanotubes on granular activated carbon using 1 % nickel as catalyst. In the laboratory adsorption experiment, initial mixed metals concentration of 2.0 mg/L Cu

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“…For this purpose, carbon supports such as activated carbon, carbon nanofibers or carbon nanotubes are considered to be good candidates [35,39,[62][63][64]. Titanium oxide and silica are also highly valued [18,54,65].…”

Section: Other Supportsmentioning

confidence: 99%

“…It should be noted that "neutral" supports are sometimes studied in association with bases [53,62,63,65] …”

Section: Other Supportsmentioning

confidence: 99%

Transformation of Sorbitol to Biofuels by Heterogeneous Catalysis: Chemical and Industrial Considerations

Vilcocq

Cabiac

Especel

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Résumé -Transformation du sorbitol en biocarburants par catalyse hétérogène : considérations chimiques et industrielles -La raréfaction du pétrole et l'augmentation conjointe de la demande en carburants ont conduit à la recherche de carburants alternatifs. Dans un premier temps, la valorisation de ressources agricoles alimentaires pour la production d'éthanol et de biodiesel a permis de développer les biocarburants de première génération. Aujourd'hui les travaux de recherche s'orientent vers l'utilisation de biomasse lignocellulosique comme source de carbone renouvelable (biocarburants de deuxième génération). Alors que la filière de l'éthanol cellulosique est en plein développement, une nouvelle voie consistant à transformer des sucres et polyols d'origine lignocellulosique en alcanes légers par catalyse hétérogène bifonctionnelle en phase aqueuse a été récemment décrite. Ce procédé s'effectue à basse température et pression modérée (T < 300 °C et P < 50 bar). Il nécessite, d'une part, la formation d'hydrogène par reformage catalytique de carbohydrates en phase aqueuse et, d'autre part, la déshydratation/hydrogénation de polyols conduisant à un alcane par ruptures sélectives des liaisons C-O. Un défi lié à cette thématique réside dans le développement de systèmes catalytiques multifonctionnels stables, actifs et sélectifs dans les conditions de la réaction de transformation. L'objectif de l'article est de présenter les réactions mises en jeu, les systèmes catalytiques décrits dans la littérature pour ce type de transformation ainsi que des exemples d'applications industrielles. Abstract

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Carbon nanofiber/graphite-felt composite supported Ru catalysts for hydrogenolysis of sorbitol

Cited by 51 publications

References 23 publications

Sorbitol Hydrogenolysis Over Ni, Pt and Ru Supported on NaY

Sorbitol Hydrogenolysis Over Ni, Pt and Ru Supported on NaY

Heavy metals removal from synthetic wastewater by a novel nano-size composite adsorbent

Transformation of Sorbitol to Biofuels by Heterogeneous Catalysis: Chemical and Industrial Considerations

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