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Fibers 2015, 3(4), 394-410; doi:10.3390/fib3040394

Using Mechanical Alloying to Create Bimetallic Catalysts for Vapor-Phase Carbon Nanofiber Synthesis

1
Chemistry Department, Millersville University, Millersville, PA 17551, USA
2
Applied Engineering, Safety & Technology Department, Millersville University, Millersville, PA 17551, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Jonathan Phillips
Received: 30 June 2015 / Accepted: 24 September 2015 / Published: 5 October 2015
(This article belongs to the Special Issue Carbon Fibers)
View Full-Text   |   Download PDF [967 KB, uploaded 5 October 2015]   |  

Abstract

Carbon nanofibers were generated over bimetallic catalysts in an atmospheric pressure chemical vapor deposition (APCVD) reactor. Catalyst compositions of Fe 30 at%, Cu and Ni 30 at% and Cu were mechanically alloyed using high-energy ball milling over durations of 4, 8, 12, 16, and 20 h. The catalyst powders were then used to produce carbon nanofibers in ethylene and hydrogen (4:1) at temperatures of 500, 550, and 600 °C. The microstructures of the catalysts were characterized as a function of milling time as well as at deposition temperature. The corresponding carbon deposition rates were assessed and are correlated to the microstructural features of each catalyst. The milling process directly determines the performance of each catalyst toward carbon deposition, and both catalysts performed comparably to those made by traditional co-precipitation methods. Considerations in miscible and immiscible nanostructured alloy systems are discussed. View Full-Text
Keywords: mechanical alloying; carbon nanofibers; nickel; iron; copper; XRD; SEM mechanical alloying; carbon nanofibers; nickel; iron; copper; XRD; SEM
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Guevara, L.; Wanner, C.; Welsh, R.; Atwater, M.A. Using Mechanical Alloying to Create Bimetallic Catalysts for Vapor-Phase Carbon Nanofiber Synthesis. Fibers 2015, 3, 394-410.

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