Hydrogenation of carbon monoxide over cobalt nanoparticles supported on carbon nanotubes

Lv, Jing; Ma, Xinbin; Huang, Chengdu; Li, Zhenhua; Gong, Jinlong

doi:10.1016/j.ijhydene.2011.04.122

Cited by 23 publications

(24 citation statements)

References 26 publications

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“…Three additional peaks are observed. The peak at 380 °C observed for 15 %Co/FM and 15 %Co/CNT is associated to the reduction of Co 3 O 4 to CoO . This peak is shifted towards lower temperatures (360 °C) for 15 %Co/CNF.…”

Section: Resultsmentioning

confidence: 87%

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Hydrogen Spillover in the Fischer‐Tropsch Synthesis on Carbon‐supported Cobalt Catalysts

et al. 2019

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The Fischer‐Tropsch reaction transforms syngas into high added value products, among which liquid fuels. Numerous parameters determine catalytic activity and selectivity towards the most desired hydrocarbons. The performances of cobalt‐based catalysts used in the reaction are known to depend critically on Co particle size and crystallographic phase. Here, we present a comparative study of Co‐based catalysts supported on three carbon supports: multi‐wall carbon nanotubes, carbon nanofibers and a fibrous material. Our results show that, while the selectivity towards C5+ follows the expected tendency with respect to Co particle size, this is not the case for the TOF. These results can be rationalized considering that the amount of H2 uptake on each catalyst increases with oxygen and defect concentration on the support. The catalyst on the support presenting many edges and oxygen surface groups, necessary for H2 spillover, presents the highest activity. Furthermore, the hydrogen spillover contributes to the enhancement of olefin hydrogenation and methane production.

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Section: Resultsmentioning

confidence: 87%

“…The peak at 380°C observed for 15 %Co/FM and 15 %Co/CNT is associated to the reduction of Co 3 O 4 to CoO. [35] This peak is shifted towards lower temperatures (360°C) for 15 %Co/CNF. The reduction of CoO to Co 0 occurs at � 530°C for 15 %Co/CNT and 15 %Co/FM catalysts.…”

Section: Catalyst Characterizationmentioning

confidence: 97%

Hydrogen Spillover in the Fischer‐Tropsch Synthesis on Carbon‐supported Cobalt Catalysts

et al. 2019

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“…Nanocarbon material supports, that is, carbon nanotubes (CNTs), carbon nanofibers (CNFs), and mesoporous carbon materials ( Figure 4), have recently attracted considerable attention as catalyst supports in FT synthesis owing to their unique properties, which include high purity, high mechanical strength, high electrical conductivity, high thermal stability, and high effective surface area along with a medium interaction with the activephase precursor. [83][84][85][86][87][88][89][90][91][92][93][94][95][96][97] In addition, CNTs and CNFs possess high external surface areas without micropores, which may be beneficial to FT reactions by reducing problems related to mass transfer. These thermally conductive supports have faced unprecedented investigation over the last decades.…”

Section: Nanocarbon Supportsmentioning

confidence: 99%

Fischer–Tropsch Reaction on a Thermally Conductive and Reusable Silicon Carbide Support

et al. 2014

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The Fischer-Tropsch (FT) process, in which synthesis gas (syngas) derived from coal, natural gas, and biomass is converted into synthetic liquid fuels and chemicals, is a strongly exothermic reaction, and thus, a large amount of heat is generated during the reaction that could severely modify the overall selectivity of the process. In this Review, we report the advantages that can be offered by different thermally conductive supports, that is, carbon nanomaterials and silicon carbide, pure or doped with different promoters, for the development of more active and selective FT catalysts. This Review follows a discussion regarding the clear trend in the advantages and drawbacks of these systems in terms of energy efficiency and catalytic performance for this most-demanded catalytic process. It is demonstrated that the use of a support with an appropriate pore size and thermal conductivity is an effective strategy to tune and improve the activity of the catalyst and to improve product selectivity in the FT process. The active phase and the recovery of the support, which also represents a main concern in terms of the large amount of FT catalyst used and the cost of the active cobalt phase, is also discussed within the framework of this Review. It is expected that a thermally conductive support such as β-SiC will not only improve the development of the FT process, but that it will also be part of a new support for different catalytic processes for which high catalytic performance and selectivity are strongly needed.

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“…As the methane is the major component of natural gas (70e98%) [1], many researches have been carried out with the catalytic methane reforming under different experimental conditions with different catalysts types [2e12] as a way to valorize the natural gas to more valuable products by transforming it to syngas where the last is suitable to be transformed to valuable products through various chemical processes such as Fischer-Tropch [3,13] and oxo-synthesis [8].…”

Section: Introductionmentioning

confidence: 99%

“…The consumption of two important greenhouse gases (CO 2 and CH 4 ) by dry methane reforming and their conversion to syngas gives to this process a great interest for environment protection [2,3,11,13] and natural gas valorization. Another advantage of this process is the production of CO-rich syngas which is considered as feedstock to produce many oxygenated hydrocarbons as methanol and dimethyl ether [10,14].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen and syngas production by methane dry reforming on SBA-15 supported nickel catalysts: On the effect of promotion by Ce0.75Zr0.25O2 mixed oxide

Albarazi

Beaunier

Costa

2013

International Journal of Hydrogen Energy

114

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Hydrogenation of carbon monoxide over cobalt nanoparticles supported on carbon nanotubes

Cited by 23 publications

References 26 publications

Hydrogen Spillover in the Fischer‐Tropsch Synthesis on Carbon‐supported Cobalt Catalysts

Hydrogen Spillover in the Fischer‐Tropsch Synthesis on Carbon‐supported Cobalt Catalysts

Fischer–Tropsch Reaction on a Thermally Conductive and Reusable Silicon Carbide Support

Hydrogen and syngas production by methane dry reforming on SBA-15 supported nickel catalysts: On the effect of promotion by Ce0.75Zr0.25O2 mixed oxide

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