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Growth of carbon nanofibers synthesized from CO2 hydrogenation on a K/Ni/Al2O3 catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
52538 46876 2009 5 PDF Available
Title
Growth of carbon nanofibers synthesized from CO2 hydrogenation on a K/Ni/Al2O3 catalyst
Abstract

We used a commercially available Ni/Al2O3 sample containing K additive to enable carbon deposition from CO2 exposure by means of catalytic hydrogenation. Our experimental results suggest that K additives induce the formation of carbon nanofibers (CNFs) or carbon deposition on Ni/Al2O3 during the CO2 hydrogenation reaction. We propose that the rate of carbon deposition depends on the reaction temperature, on H2 and CO2 partial pressures, and on the reactant residence time. Furthermore, we suggest that the creation of a K-relevant active phase may be involved in the carbon deposition process. Our results also indicate that the degree of CNF graphitization can change with reaction time.

Keywords
CO2 hydrogenation; Ni/Al2O3 catalyst; Carbon nanofibers; Potassium; Carbon dioxide
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Growth of carbon nanofibers synthesized from CO2 hydrogenation on a K/Ni/Al2O3 catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 3, 25 November 2009, Pages 220–224
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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
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