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Simultaneous production of hydrogen and multi-walled carbon nanotubes by ethanol decomposition over Ni/Al2O3 catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
48131 46494 2009 10 PDF Available
Title
Simultaneous production of hydrogen and multi-walled carbon nanotubes by ethanol decomposition over Ni/Al2O3 catalysts
Abstract

Ethanol decomposition was studied over Ni/Al2O3 catalysts with different Ni loadings (10–90 mol%) at temperatures between 500 and 800 °C to produce hydrogen and multi-walled carbon nanotubes (MWCNTs) at the same time. The hydrogen production increased with increasing temperature and Ni loadings. However, both the quality and the quantity of the nanotubes formed at the relatively high temperatures of 700 and 800 °C decreased due to sintering of the Ni particles. The Ni (80 mol%)/Al2O3 was the most effective catalyst for ethanol decomposition into hydrogen (the maximum H2 yield of 83%) and MWCNTs (the maximum deposited yield of 80%) at 600 °C. Carbon nanofibers (CNFs) and MWCNTs were observed simultaneously on Ni (90 mol%)/Al2O3 at 500 °C. Several possible reactions also were proposed to explain ethanol decomposition to produce hydrogen and carbon (including nanotube), etc., at the same time.

Keywords
Ethanol decomposition; Ni/Al2O3; Hydrogen; Carbon nanotubes; Carbon nanofibers
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Simultaneous production of hydrogen and multi-walled carbon nanotubes by ethanol decomposition over Ni/Al2O3 catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 88, Issues 1–2, 29 April 2009, Pages 142–151
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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