Utilization of Carbon Nanotubes as a Support Material in Metal-Based Catalyst Systems: Applications in Catalysis

2012 ◽  
Vol 6 (1) ◽  
pp. 31-47 ◽  
Author(s):  
Rohaya Husny Pahmy ◽  
Abdul Rahman Mohamed
Keyword(s):  
Carbon Nanotubes ◽  
Support Material ◽  
Catalyst Systems

Employing Exfoliated Graphite as Novel Support Material for Heterogeneous Model Catalysts

2019 ◽  
Author(s):  
Moritz Wolf ◽  
Nico Fischer ◽  
Michael Claeys
Keyword(s):  
Surface Area ◽  
Graphite Powder ◽  
Model Catalysts ◽  
Model Systems ◽  
Exfoliated Graphite ◽  
Support Material ◽  
Heterogeneous Model ◽  
Support Materials ◽  
Metal Support Interaction ◽  
Catalyst Systems

<p>The inert nature of graphitic samples allows for characterisation of rather isolated supported nanoparticles in model catalysts, as long as sufficiently large inter-particle distances are obtained. However, the low surface area of graphite and the little interaction with nanoparticles result in a challenging application of conventional preparation routes in practice. In the present study, a set of graphitic carbon materials was characterised in order to identify potential support materials for the preparation of model catalyst systems. Various sizes of well-defined Co<sub>3</sub>O<sub>4</sub> nanoparticles were synthesised separately and supported onto exfoliated graphite powder, that is graphite after solvent-assisted exfoliation <i>via</i> ultrasonication resulting in thinner flakes with increased specific surface area. The developed model catalysts are ideally suited for sintering studies of isolated nano-sized cobaltous particles as the graphitic support material does not provide distinct metal-support interaction. Furthermore, the differently sized cobaltous particles in the various model systems render possible studies on structural dependencies of activity, selectivity, and deactivation in cobalt oxide or cobalt catalysed reactions.</p>

scholarly journals Zeolite Surface As a Catalyst Support Material for Synthesis of Single-Walled Carbon Nanotubes

2011 ◽  
Vol 115 (49) ◽  
pp. 24231-24237 ◽  
Author(s):  
Takahiko Moteki ◽  
Yoichi Murakami ◽  
Suguru Noda ◽  
Shigeo Maruyama ◽  
Tatsuya Okubo
Keyword(s):  
Carbon Nanotubes ◽  
Catalyst Support ◽  
Single Walled Carbon Nanotubes ◽  
Support Material ◽  
Zeolite Surface ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

scholarly journals A Comparative Study of Carbon Nanotubes Synthesized from Co/Zn/Al and Fe/Ni/Al Catalyst

2011 ◽  
Vol 8 (3) ◽  
pp. 1014-1021 ◽  
Author(s):  
Ezekiel Dixon Dikio
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Electron Microscope ◽  
Thermogravimetric Analysis ◽  
Catalyst System ◽  
X Ray ◽  
Transmission Electron ◽  
Catalyst Systems ◽  
Synthesis Of Carbon Nanotubes ◽  
Scanning Electron

The catalyst systems Fe/Ni/Al and Co/Zn/Al were synthesized and used in the synthesis of carbon nanotubes. The carbon nanotubes produced were characterized by Field Emission Scanning Electron Microscope(FE-SEM), Energy Dispersive x-ray Spectroscopy(EDS), Raman spectroscopy, Thermogravimetric Analysis(TGA)and Transmission Electron Microscope(TEM). A comparison of the morphological profile of the carbon nanotubes produced from these catalysts indicates the catalyst system Fe/Ni/Al to have produced higher quality carbon nanotubes than the catalyst system Co/Zn/Al.

scholarly journals Hierarchically structured reactors containing nanocarbons for intensification of chemical reactions

2017 ◽  
Vol 5 (43) ◽  
pp. 22408-22441 ◽  
Author(s):  
Enrique García-Bordejé ◽  
Yuefeng Liu ◽  
Dang Sheng Su ◽  
Cuong Pham-Huu
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanofibers ◽  
Chemical Reactions ◽  
Host Matrix ◽  
Structured Catalyst ◽  
Structured Reactors ◽  
Recent Developments ◽  
Catalyst Systems ◽  
Review Reports

This review reports on the recent developments in hierarchically structured catalyst systems based on self-supported nanocarbons and homogeneous decoration of a macroscopic host matrix with a layer of carbon nanotubes (CNTs) or carbon nanofibers (CNFs).

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