Effect of process temperature on morphology of CNTs grown in a vertically fluidized bed reactor with Fe 2 O 3 /Al 2 O 3 catalyst

Carbon nanotubes (CNTs) are one of the most researched materials due to their exceptional mechanical and electrical properties. Among the various techniques, catalytic chemical vapor deposition in a fluidized bed reactor is the most promising technique for bulk production of CNTs. To meet the demand...

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Main Authors: Shukrullah, S., Mohamed, N.M., Shaharun, M.S.
Format: Conference or Workshop Item
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.31451 /
Published: American Institute of Physics Inc. 2015
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063840598&doi=10.1063%2f1.4919183&partnerID=40&md5=50eaac9085031c69ab5c5e2de0999c61
http://eprints.utp.edu.my/31451/
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spelling utp-eprints.314512022-03-26T03:19:52Z Effect of process temperature on morphology of CNTs grown in a vertically fluidized bed reactor with Fe 2 O 3 /Al 2 O 3 catalyst Shukrullah, S. Mohamed, N.M. Shaharun, M.S. Carbon nanotubes (CNTs) are one of the most researched materials due to their exceptional mechanical and electrical properties. Among the various techniques, catalytic chemical vapor deposition in a fluidized bed reactor is the most promising technique for bulk production of CNTs. To meet the demand of good quality along with the bulk production of CNTs, the effect of reaction temperature on the micro structures, morphology, diameter, quality and quantity of CNTs was investigated in these studies. CNTs were synthesized at process temperature ranging from 700-850°C by catalytic decomposition of C 2 H 4 on Fe 2 O 3 /Al 2 O 3 catalyst a vertical fluidized bed reactor. The microstructures of the grown CNTs at different reaction temperatures were investigated by using scanning electron microscope. The results of this study depicted a positive correlation between the average diameter of CNTs and reaction temperature. Narrow diameters (35�40 nm) of CNTs with fewer defects were found at the low and mild temperatures, in particular 800°C. At this temperature, a dynamic equilibrium between the rate of C 2 H 4 decomposition and CNTs quantity was found due to maximum carbon diffusion over catalyst. The CNTs produced with Fe 2 O 3 /Al 2 O 3 catalyst wer e also exhibiting high quality with relatively small mean outer diameter and fewer surface defects. © 2015 AIP Publishing LLC. American Institute of Physics Inc. 2015 Conference or Workshop Item NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063840598&doi=10.1063%2f1.4919183&partnerID=40&md5=50eaac9085031c69ab5c5e2de0999c61 Shukrullah, S. and Mohamed, N.M. and Shaharun, M.S. (2015) Effect of process temperature on morphology of CNTs grown in a vertically fluidized bed reactor with Fe 2 O 3 /Al 2 O 3 catalyst. In: UNSPECIFIED. http://eprints.utp.edu.my/31451/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Carbon nanotubes (CNTs) are one of the most researched materials due to their exceptional mechanical and electrical properties. Among the various techniques, catalytic chemical vapor deposition in a fluidized bed reactor is the most promising technique for bulk production of CNTs. To meet the demand of good quality along with the bulk production of CNTs, the effect of reaction temperature on the micro structures, morphology, diameter, quality and quantity of CNTs was investigated in these studies. CNTs were synthesized at process temperature ranging from 700-850°C by catalytic decomposition of C 2 H 4 on Fe 2 O 3 /Al 2 O 3 catalyst a vertical fluidized bed reactor. The microstructures of the grown CNTs at different reaction temperatures were investigated by using scanning electron microscope. The results of this study depicted a positive correlation between the average diameter of CNTs and reaction temperature. Narrow diameters (35�40 nm) of CNTs with fewer defects were found at the low and mild temperatures, in particular 800°C. At this temperature, a dynamic equilibrium between the rate of C 2 H 4 decomposition and CNTs quantity was found due to maximum carbon diffusion over catalyst. The CNTs produced with Fe 2 O 3 /Al 2 O 3 catalyst wer e also exhibiting high quality with relatively small mean outer diameter and fewer surface defects. © 2015 AIP Publishing LLC.
format Conference or Workshop Item
author Shukrullah, S.
Mohamed, N.M.
Shaharun, M.S.
spellingShingle Shukrullah, S.
Mohamed, N.M.
Shaharun, M.S.
Effect of process temperature on morphology of CNTs grown in a vertically fluidized bed reactor with Fe 2 O 3 /Al 2 O 3 catalyst
author_sort Shukrullah, S.
title Effect of process temperature on morphology of CNTs grown in a vertically fluidized bed reactor with Fe 2 O 3 /Al 2 O 3 catalyst
title_short Effect of process temperature on morphology of CNTs grown in a vertically fluidized bed reactor with Fe 2 O 3 /Al 2 O 3 catalyst
title_full Effect of process temperature on morphology of CNTs grown in a vertically fluidized bed reactor with Fe 2 O 3 /Al 2 O 3 catalyst
title_fullStr Effect of process temperature on morphology of CNTs grown in a vertically fluidized bed reactor with Fe 2 O 3 /Al 2 O 3 catalyst
title_full_unstemmed Effect of process temperature on morphology of CNTs grown in a vertically fluidized bed reactor with Fe 2 O 3 /Al 2 O 3 catalyst
title_sort effect of process temperature on morphology of cnts grown in a vertically fluidized bed reactor with fe 2 o 3 /al 2 o 3 catalyst
publisher American Institute of Physics Inc.
publishDate 2015
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063840598&doi=10.1063%2f1.4919183&partnerID=40&md5=50eaac9085031c69ab5c5e2de0999c61
http://eprints.utp.edu.my/31451/
_version_ 1741197576924823552
score 11.62408

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