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Controlling Co-support interaction in Co/MWCNTs catalysts and catalytic performance for hydrogen production via NH3 decomposition

Paper ID Volume ID Publish Year Pages File Format Full-Text
40118 45844 2013 9 PDF Available
Title
Controlling Co-support interaction in Co/MWCNTs catalysts and catalytic performance for hydrogen production via NH3 decomposition
Abstract

•Supported cobalt is reduced by MWCNTs via thermal pretreatment in N2 atmosphere.•Reduction of Co species by MWCNTs can be controlled by pretreatment temperature.•The N2-activated Co/MWCNTs catalyst has high catalytic activity for NH3 decomposition.

The influence of thermal treatment in hydrogen and nitrogen atmosphere of Co precursors in Co/MWCNTs system on the catalyst structure and catalytic activities in NH3 decomposition were studied. The cobalt-support interaction in cobalt supported on MWCNTs was controlled by varying the temperature of thermal treatment of Co precursor and reaction media. Due to the interaction of cobalt species with multi wall carbon nanotubes (MWCNTs), the Co/MWCNTs catalysts after pretreatment in nitrogen exhibited higher catalytic activity for NH3 decomposition comparing to that observed after hydrogen pretreatment of the sample. Cobalt dispersion in MWCNTs-supported catalysts was found to be a function of thermal pretreatment temperatures. The studied samples were characterized by X-ray diffraction, HRTEM, thermo gravimetric analysis, temperature programmed reduction and temperature programmed desorption

Graphical abstractThe reduction of cobalt species by MWCNTs in Co/MWCNTs catalyst during thermal pretreatment in N2 atmosphere results in a higher catalytic activity in NH3 decomposition than the Co/MWCNTs catalyst reduced by H2.Figure optionsDownload full-size imageDownload high-quality image (278 K)Download as PowerPoint slide

Keywords
MWCNTs-supported cobalt catalyst; Cobalt-support interaction; NH3 decomposition; Hydrogen
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Controlling Co-support interaction in Co/MWCNTs catalysts and catalytic performance for hydrogen production via NH3 decomposition
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 464–465, 15 August 2013, Pages 156–164
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us