Multi-wall carbon nanotubes supported ruthenium for glucose hydrogenation to sorbitol

Pan, Jiaxing; Li, Jinhua; Wang, Chao; Yang, Zhengyu

doi:10.1007/s11144-007-4989-4

Cited by 42 publications

(30 citation statements)

References 12 publications

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“…As shown in Fig. 5(e)-(h), the binding energy of Ru 3p 3/2 was 462.2-462.3 eV and the binding energy of Ru 3p 1/2 was 484.2-484.5 eV, which was in agreement with other studies on Ru/CNFs catalysts [18,19] and multi-wall carbon nanotubes (MWCNTs) supported Ru particles [16]. This result indicated that Ru particles existed in approximately identical chemical state in all the reduced Ru/CNFs catalysts, though Ru atoms existed in different forms when the as-prepared Ru/CNFs catalyst was calcined at different temperatures.…”

Section: September 2010supporting

confidence: 91%

See 1 more Smart Citation

Carbon nanofibers supported Ru catalyst for sorbitol hydrogenolysis to glycols: Effect of calcination

Zhao

Zhou

Chen

et al. 2010

Korean J. Chem. Eng.

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Carbon nanofiber (CNFs) supported Ru catalysts for sorbitol hydrogenolysis to ethylene glycol and propylene glycol were prepared by incipient wetness impregnation, calcination and reduction. The effect of calcination on catalyst properties was investigated using thermal gravimetry analysis, temperature-programmed reduction, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and N 2 physisorption. The results indicated that calcination introduced a great amount of surface oxygen-containing groups (SOCGs) onto CNF surface and induced the phase transformation of Ru species, but slightly changed the texture of Ru/CNFs. The catalytic performance in sorbitol hydrogenolysis showed that Ru/CNFs catalyst calcined at 240 o C presented the highest glycol selectivities and reasonable glycol yields. It was believed that the inhibition and confinement effect of SOCGs around Ru particles as well as the high dispersion of Ru particles was the key factor for the catalytic activity.

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Section: September 2010supporting

confidence: 91%

“…was used to study the chemical state of the Ru particles because of the overlap of Ru 3d 3/2 peak with C 1s region [16,17]. As shown in Fig.…”

Section: September 2010mentioning

confidence: 99%

Carbon nanofibers supported Ru catalyst for sorbitol hydrogenolysis to glycols: Effect of calcination

Zhao

Zhou

Chen

et al. 2010

Korean J. Chem. Eng.

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“…In other words, CNT was the most effective support for Ru catalyst for the conversion of cellulose into sorbitol. It is of interest to note that Pan et al [29] have reported that the CNT-supported Ru catalyst is much effective than the Al 2 O 3 -and SiO 2 -supported Ru and Raney Ni catalysts for the conversion of glucose to sorbitol. To clarify the role of CNT support in our case, we have carried out more detailed studies on Ru/CNT catalysts.…”

Section: Catalytic Conversion Of Cellulosementioning

confidence: 99%

Conversion of Cellulose into Sorbitol over Carbon Nanotube-Supported Ruthenium Catalyst

et al. 2009

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Cellulose samples with different crystallinities (33-85%) were prepared by treating a commercial cellulose (crystalline, 85%) with phosphoric acid under different conditions. Supported Fe, Co, Ni, Pd, Pt, Rh, Ru, Ir, Ag, and Au catalysts were examined for the conversion of cellulose with a crystallinity of 33% in water medium in the presence of hydrogen, and Ru was found to be the most effective catalyst for the formation of sorbitol. We demonstrated that carbon nanotubes (CNTs) were the most efficient support of Ru for cellulose conversion, and the mean size of Ru nanoparticles over CNT was similar to 8.8 nm. NH3-TPD and H-2-TPD characterizations suggest that plenty of acid sites and unique hydrogen species over the Ru/CNT are important for sorbitol formation through hydrolysis and hydrogenation of cellulose. A 40% yield of hexitols (including 36% of sorbitol) could be achieved over the Ru/CNT catalyst for the conversion of the commercial cellulose (crystalline, 85%), and this yield was the highest one reported to date for the direct conversion of cellulose into sugar alcohols.National Natural Science Foundation of China [20625310, 20773099, 20873110]; National Basic Program of China [2010CB732303, 2005CB221408]; New Century Excellent Talents in Fujian Provinc

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“…It was established according to the analysis results ( Table 2) that ruthenium on the surface is in the form of the mixture of dioxide (Ru(IV)) with a different degree of hydration with the predominance of the latter. It is supposed that dioxide of ruthenium (Ru(IV)) is the oxidized ruthenium surface (Ru(0)) [39]. The absence of the ruthenate-anion should be noted in case Ru NPs are formed on the support with tertiary amine groups.…”

Section: Resultsmentioning

confidence: 99%

Influence of the Mesoporous Polymer Matrix Nature on the Formation of Catalytically Active Ruthenium Nanoparticles

Sulman

Doluda

Grigoryev

et al. 2015

Bull. Chem. React. Eng. Catal.

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This paper reports on ruthenium nanoparticles formation and stabilization by hypercrosslinked polystyrene and the catalytic properties of the nanocomposites obtained. Hypercrosslinked polystyrene with functional groups and without them was used. The nanocomposites were characterized using lowtemperature nitrogen physisorption, X-ray photoelectron spectroscopy and transmission electron microscopy. It is established that the tertiary amine group of the support influences both formation of ruthenium nanoparticles, and their catalytic properties in the selective hydrogenation of D-glucose.

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Multi-wall carbon nanotubes supported ruthenium for glucose hydrogenation to sorbitol

Cited by 42 publications

References 12 publications

Carbon nanofibers supported Ru catalyst for sorbitol hydrogenolysis to glycols: Effect of calcination

Carbon nanofibers supported Ru catalyst for sorbitol hydrogenolysis to glycols: Effect of calcination

Conversion of Cellulose into Sorbitol over Carbon Nanotube-Supported Ruthenium Catalyst

Influence of the Mesoporous Polymer Matrix Nature on the Formation of Catalytically Active Ruthenium Nanoparticles

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