Nitrogen-doped carbon nanotubes as a metal catalyst support

The effect of nitrogen doped bamboo-like carbon nanotubes (N–CNTs) on the properties of supported platinum (0.2 and 1 wt %) catalysts in formic acid decomposition for hydrogen production was studied. It was shown that both impregnation and homogeneous precipitation routes led to the formation of electron-deficient platinum stabilized by pyridinic nitrogen sites of the N–CNTs. The electron-deficient platinum species strongly enhanced the activity and selectivity of the Pt/N–CNTs catalysts when compared to the catalysts containing mainly metallic platinum nanoparticles. A comparison of bamboo-like N–CNTs and herring-bone nitrogen doped carbon nanofibers (N–CNFs) as the catalyst support allowed us to conclude that the catalytic properties of supported platinum are determined by its locally one-type interaction with pyridinic nitrogen sites of the N–CNTs or N–CNFs irrespective of substantial structural differences between nanotubes and nanofibers.

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Nitrogen-doped Carbon Nanotubes as a Novel Class of Catalyst Support for PEM Fuel Cells

ECS Meeting Abstracts ◽

10.1149/ma2009-02/10/1124 ◽

2009 ◽

Keyword(s):

Carbon Nanotubes ◽

Fuel Cells ◽

Catalyst Support ◽

Pem Fuel Cells ◽

Nitrogen Doped ◽

Nitrogen Doped Carbon

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Tuning of nitrogen-doped carbon nanotubes as catalyst support for liquid-phase reaction

Applied Catalysis A General ◽

10.1016/j.apcata.2010.03.031 ◽

2010 ◽

Vol 380 (1-2) ◽

pp. 72-80 ◽

Cited By ~ 137

Author(s):

Kambiz Chizari ◽

Izabela Janowska ◽

Matthieu Houllé ◽

Ileana Florea ◽

Ovidiu Ersen ◽

...

Keyword(s):

Carbon Nanotubes ◽

Liquid Phase ◽

Catalyst Support ◽

Phase Reaction ◽

Nitrogen Doped ◽

Nitrogen Doped Carbon ◽

Liquid Phase Reaction

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Using nitrogen-doped carbon nanotubes as a catalyst support for selective hydrogenation of cinnamaldehyde

Science and Technology Development Journal ◽

10.32508/stdj.v20ik1.408 ◽

2017 ◽

Vol 20 (K1) ◽

pp. 20-27

Author(s):

Truong Huu Tri ◽

Nguyen Dinh Lam

Keyword(s):

Electron Microscopy ◽

Carbon Nanotubes ◽

Selective Hydrogenation ◽

Photoelectron Spectroscopy ◽

Catalyst Support ◽

Chemical Vapor ◽

Active Phase ◽

Chemical Vapor Deposition Method ◽

Nitrogen Doped ◽

Nitrogen Doped Carbon

Nitrogen-doped carbon nanotubes (N-CNTs) has been applied in different areas for over two last decade thanks to their novel properties. In this work, N-CNTs were produced by using chemical vapor deposition method, this material was used as catalyst support for nanoparticles paladi (Pd) catalyst. The support and catalyst Pd/N-CNTs were characterized by several techniques including Raman spectrum, X-ray photoelectron spectroscopy (XPS), nitrogen adsorption - desorption isotherms (BET), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The catalyst was tested for the selective hydrogenation of cinnamaldehyde (CAL), The result of this study shows that the catalyst Pd/N-CNTs exhibits a high selectivity towards the C=C bond, over 91% of hydrocinnamaldehyde (HCAL) obtained at about 70% of CAL conversion. The obtained results also show that the present nitrogen atoms in the carbon architecture and functional groups of oxygen in the N-CNTs material have altered the surface properties, as enhancing the dispersion and anchoring active phase on the surface of the support.

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