Enhanced performance of Ru nanoparticles confined in carbon nanotubes for CO preferential oxidation in a H2-rich stream

Wang, Chao; Yi, Guangquan; Lin, Haiqiang; Yuan, Youzhu

doi:10.1016/j.cattod.2010.10.020

Cited by 42 publications

(20 citation statements)

References 24 publications

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“…29 This selective deposition technique has been successfully employed by different groups on various CNTs since then. [30][31][32] Secondly, the layer of pyrolytic carbon exhibits a high concentration of structural defects (see below) which can be tuned by annealing in an inert atmosphere (graphitization). Therefore, these materials offer a large playground to study the effect of the defect density and of the surface chemistry on the ALD.…”

Section: Resultsmentioning

confidence: 99%

Labeling and monitoring the distribution of anchoring sites on functionalized CNTs by atomic layer deposition

et al. 2012

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The chemical inertness of graphite and, in the case of tubes, of rolled up few layer graphene sheets, requires some degree of “defect engineering” for the fabrication of carbon based heterostructured materials. It is shown that atomic layer deposition provides a means to specifically label anchoring sites and can be used to characterize the surface functionality of differently treated carbon nanotubes. Direct observation of deposited titania by analytical transmission electron microscopy reveals the location and density of anchoring sites as well as structure related concentrations of functional groups on the surface of the tubes. Controlled functionalization of the tubes therefore allows us to tailor the distribution of deposited material and, hence, fabricate complex heterostructures

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Section: Resultsmentioning

confidence: 99%

Labeling and monitoring the distribution of anchoring sites on functionalized CNTs by atomic layer deposition

et al. 2012

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“…Similar improvement of PROX reactivity by confining metal nanoparticles inside CNTs has also been reported elsewhere. 15 Also, it is noteworthy that the superior PROX performance of Ru/AOX and Ru/COX over Ru/P-CNTs is only observed at reaction temperature below 120 uC, which might be explained by the weakened selective reactant enrichment with temperature increment. 39 …”

Section: Metal-support Interactionmentioning

confidence: 98%

Difference in the cooperative interaction between carbon nanotubes and Ru particles loaded on their internal/external surface

Wang

Chen

et al. 2013

RSC Adv.

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This paper examines differences in the cooperative interaction between carbon nanotubes (CNTs) and Ru particles loaded on their internal/external surface. The techniques used were transmission electron microscopy, X-ray photoelectron spectroscopy, CO chemisorption, X-ray diffraction, N 2 physisorption, hydrogen temperature-programmed reduction and two probe catalysis reactions, namely ammonia decomposition and preferential oxidation of CO in H 2 -rich atmosphere (PROX). The results show that the loading of highly dispersed Ru particles on CNTs does not change the structure of the CNTs. The cooperative interaction between Ru particles and associated CNT surfaces is dependent on the position of Ru particles and the surface functional groups of CNTs. Due to the electron-deficient structure of Ru particles confined inside CNT channels, they have an inferior ammonia decomposition activity to those deposited on the CNT external surface. For PROX, the catalytic performance of Ru particles confined inside CNT channels is superior compared to that over Ru particles deposited outside CNTs, which we attribute to the selective reactant enrichment of CO over H 2 inside the CNTs.

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“…Other metals supported on CNTs were applied in FTS such as Rh, 217,218 Ru, [219][220][221] NiMo. 222 The Rh particles confined within nanotubes have a significantly enhanced catalytic activity for the conversion of CO and H 2 to ethanol.…”

Section: Carbon Nanotubes and Nanofibers Supported Metal Catalystsmentioning

confidence: 99%

Carbon-based catalysts for Fischer–Tropsch synthesis

et al. 2021

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Enhanced performance of Ru nanoparticles confined in carbon nanotubes for CO preferential oxidation in a H2-rich stream

Cited by 42 publications

References 24 publications

Labeling and monitoring the distribution of anchoring sites on functionalized CNTs by atomic layer deposition

Labeling and monitoring the distribution of anchoring sites on functionalized CNTs by atomic layer deposition

Difference in the cooperative interaction between carbon nanotubes and Ru particles loaded on their internal/external surface

Carbon-based catalysts for Fischer–Tropsch synthesis

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