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Synthesis and Characterization of Cobalt-Based Nanocatalysts: Effect of Supports

This paper presents a comparative study of Co nanocatalysts supported on Al2O3, SiO2 and carbon nanotubes (CNTs). The nanocatalysts were prepared by a wet impregnation method. Samples were characterized using H2-TPR, CO-chemisorptions, H2-TPD, TPO and transmission electron microscopy (TEM). The cata...

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Main Authors: Ali, S., Mohd Zabidi, N. A., Subbarao, D.
Format: Conference or Workshop Item
Published: 2011
Subjects:
QD Chemistry
Online Access:http://eprints.utp.edu.my/6465/1/Paper_381-ICNFA_2011-__final__Paper_381-270411.pdf
http://ICNFA2011.International-ASET.com/
http://eprints.utp.edu.my/6465/
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spelling my.utp.eprints.64652017-01-19T08:22:34Z Synthesis and Characterization of Cobalt-Based Nanocatalysts: Effect of Supports Ali, S. Mohd Zabidi, N. A. Subbarao, D. QD Chemistry This paper presents a comparative study of Co nanocatalysts supported on Al2O3, SiO2 and carbon nanotubes (CNTs). The nanocatalysts were prepared by a wet impregnation method. Samples were characterized using H2-TPR, CO-chemisorptions, H2-TPD, TPO and transmission electron microscopy (TEM). The catalytic activities of the supported Co nanocatalysts were evaluated in a Fischer-Tropsch synthesis (FTS) reaction using a fixed-bed microreactor at 543K and 1 atm, H2/CO = 2 v/v and space velocity, SV = 12 L/g.h. CNTs-supported Co nanocatalyst exhibited different physicochemical properties compared to Co supported on Al2O3 and SiO2. The CNTs support resulted in better dispersion, improved reducibility, increased in the CO and hydrogen chemisorptions of Co compared to those supported on Al2O3 and SiO2. Amongst the catalysts studied, the Co/CNTs had the largest number of active sites which resulted in the highest CO conversion (15.7%) and C5+ selectivity (14.0%). Carbon nanotubes were found to be a better support for Co nanoparticles compared to Al2O3 and SiO2. 2011-07 Conference or Workshop Item PeerReviewed application/pdf http://eprints.utp.edu.my/6465/1/Paper_381-ICNFA_2011-__final__Paper_381-270411.pdf http://ICNFA2011.International-ASET.com/ Ali, S. and Mohd Zabidi, N. A. and Subbarao, D. (2011) Synthesis and Characterization of Cobalt-Based Nanocatalysts: Effect of Supports. In: 2nd International Conference on Nanotechnology: Fundamentals and Applications, 27-29 July 2011, Ottawa, Canada. http://eprints.utp.edu.my/6465/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic QD Chemistry
spellingShingle QD Chemistry
Ali, S.
Mohd Zabidi, N. A.
Subbarao, D.
Synthesis and Characterization of Cobalt-Based Nanocatalysts: Effect of Supports
description This paper presents a comparative study of Co nanocatalysts supported on Al2O3, SiO2 and carbon nanotubes (CNTs). The nanocatalysts were prepared by a wet impregnation method. Samples were characterized using H2-TPR, CO-chemisorptions, H2-TPD, TPO and transmission electron microscopy (TEM). The catalytic activities of the supported Co nanocatalysts were evaluated in a Fischer-Tropsch synthesis (FTS) reaction using a fixed-bed microreactor at 543K and 1 atm, H2/CO = 2 v/v and space velocity, SV = 12 L/g.h. CNTs-supported Co nanocatalyst exhibited different physicochemical properties compared to Co supported on Al2O3 and SiO2. The CNTs support resulted in better dispersion, improved reducibility, increased in the CO and hydrogen chemisorptions of Co compared to those supported on Al2O3 and SiO2. Amongst the catalysts studied, the Co/CNTs had the largest number of active sites which resulted in the highest CO conversion (15.7%) and C5+ selectivity (14.0%). Carbon nanotubes were found to be a better support for Co nanoparticles compared to Al2O3 and SiO2.
format Conference or Workshop Item
author Ali, S.
Mohd Zabidi, N. A.
Subbarao, D.
author_facet Ali, S.
Mohd Zabidi, N. A.
Subbarao, D.
author_sort Ali, S.
title Synthesis and Characterization of Cobalt-Based Nanocatalysts: Effect of Supports
title_short Synthesis and Characterization of Cobalt-Based Nanocatalysts: Effect of Supports
title_full Synthesis and Characterization of Cobalt-Based Nanocatalysts: Effect of Supports
title_fullStr Synthesis and Characterization of Cobalt-Based Nanocatalysts: Effect of Supports
title_full_unstemmed Synthesis and Characterization of Cobalt-Based Nanocatalysts: Effect of Supports
title_sort synthesis and characterization of cobalt-based nanocatalysts: effect of supports
publishDate 2011
url http://eprints.utp.edu.my/6465/1/Paper_381-ICNFA_2011-__final__Paper_381-270411.pdf
http://ICNFA2011.International-ASET.com/
http://eprints.utp.edu.my/6465/
_version_ 1738655489774845952
score 13.211869

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