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Free-H2 deoxygenation of Jatropha curcas oil into cleaner diesel-grade biofuel over coconut residue-derived activated carbon catalyst

Diesel-like hydrocarbons were produced by the catalytic deoxygenation (DO) of Jatropha curcas oil (JCO) over novel Agx/AC and Niy-Agx/AC catalysts under an H2-free atmosphere. The AC was synthesized from coconut fibre residues (CFR), where CFR is the by-product from coconut milk extraction and is pa...

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Main Authors: Nurul Asikin Mijan, J.M. Ooi, Abdulkareem Ghassan Alsultan, H.V. Lee, Mohd Sufri Mastuli, Nasar Mansir, Fahad A. Alharti, Abdulaziz Alghamdi, Yap, Taufiq Yun Hin
Format: Article
Language:English
Published: Elsevier 2019
Subjects:
QK Botany
Online Access:https://eprints.ums.edu.my/id/eprint/25486/1/Free-H2%20deoxygenation%20of%20Jatropha%20curcas%20oil%20into%20cleaner%20diesel-grade%20biofuel%20over%20coconut%20residue-derived%20activated%20carbon%20catalyst.pdf
https://eprints.ums.edu.my/id/eprint/25486/
https://doi.org/10.1016/j.jclepro.2019.119381
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spelling my.ums.eprints.254862020-06-07T10:13:55Z https://eprints.ums.edu.my/id/eprint/25486/ Free-H2 deoxygenation of Jatropha curcas oil into cleaner diesel-grade biofuel over coconut residue-derived activated carbon catalyst Nurul Asikin Mijan J.M. Ooi Abdulkareem Ghassan Alsultan H.V. Lee Mohd Sufri Mastuli Nasar Mansir Fahad A. Alharti Abdulaziz Alghamdi Yap, Taufiq Yun Hin QK Botany Diesel-like hydrocarbons were produced by the catalytic deoxygenation (DO) of Jatropha curcas oil (JCO) over novel Agx/AC and Niy-Agx/AC catalysts under an H2-free atmosphere. The AC was synthesized from coconut fibre residues (CFR), where CFR is the by-product from coconut milk extraction and is particularly rich in soft fibres with high mineral content. The Niy-Agx/AC catalyst afforded higher DO activity via the decarboxylation/decarbonylation (deCOx) route than Agx/AC due to the properties of Ni, synergistic interaction of Ni and Ag species, adequate amount of strong acid sites and large number of weak acid sites, which cause extensive C-O cleavage and lead to rich formation of n-(C15+C17) hydrocarbons. The effect of Ag and Ni content were studied within the 5 to 15 wt% range. An optimum Ni and Ag metal content (5 wt%) for deCOx reaction was observed. Excess Ni is not preferable due to a tendency for cracking and Ag-rich containing catalyst weakly enforced triglycerides breaking. The Ni5-Ag5/AC govern exclusively decarbonylation reaction, which corroborates the presence of Ni²⁺ species and a high amount of strong acid sites. Ultimately, Ni5-Ag5/AC in the present study shows excellent chemical stability with consistent five reusability without drastic reduction of hydrocarbon yield (78–95%) and n-(C15+C17) selectivity (82–83%), which indicate favourable application in JCO DO. Elsevier 2019-11 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/25486/1/Free-H2%20deoxygenation%20of%20Jatropha%20curcas%20oil%20into%20cleaner%20diesel-grade%20biofuel%20over%20coconut%20residue-derived%20activated%20carbon%20catalyst.pdf Nurul Asikin Mijan and J.M. Ooi and Abdulkareem Ghassan Alsultan and H.V. Lee and Mohd Sufri Mastuli and Nasar Mansir and Fahad A. Alharti and Abdulaziz Alghamdi and Yap, Taufiq Yun Hin (2019) Free-H2 deoxygenation of Jatropha curcas oil into cleaner diesel-grade biofuel over coconut residue-derived activated carbon catalyst. Journal of Cleaner Production, 249. ISSN 0959-6526 https://doi.org/10.1016/j.jclepro.2019.119381
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
topic QK Botany
spellingShingle QK Botany
Nurul Asikin Mijan
J.M. Ooi
Abdulkareem Ghassan Alsultan
H.V. Lee
Mohd Sufri Mastuli
Nasar Mansir
Fahad A. Alharti
Abdulaziz Alghamdi
Yap, Taufiq Yun Hin
Free-H2 deoxygenation of Jatropha curcas oil into cleaner diesel-grade biofuel over coconut residue-derived activated carbon catalyst
description Diesel-like hydrocarbons were produced by the catalytic deoxygenation (DO) of Jatropha curcas oil (JCO) over novel Agx/AC and Niy-Agx/AC catalysts under an H2-free atmosphere. The AC was synthesized from coconut fibre residues (CFR), where CFR is the by-product from coconut milk extraction and is particularly rich in soft fibres with high mineral content. The Niy-Agx/AC catalyst afforded higher DO activity via the decarboxylation/decarbonylation (deCOx) route than Agx/AC due to the properties of Ni, synergistic interaction of Ni and Ag species, adequate amount of strong acid sites and large number of weak acid sites, which cause extensive C-O cleavage and lead to rich formation of n-(C15+C17) hydrocarbons. The effect of Ag and Ni content were studied within the 5 to 15 wt% range. An optimum Ni and Ag metal content (5 wt%) for deCOx reaction was observed. Excess Ni is not preferable due to a tendency for cracking and Ag-rich containing catalyst weakly enforced triglycerides breaking. The Ni5-Ag5/AC govern exclusively decarbonylation reaction, which corroborates the presence of Ni²⁺ species and a high amount of strong acid sites. Ultimately, Ni5-Ag5/AC in the present study shows excellent chemical stability with consistent five reusability without drastic reduction of hydrocarbon yield (78–95%) and n-(C15+C17) selectivity (82–83%), which indicate favourable application in JCO DO.
format Article
author Nurul Asikin Mijan
J.M. Ooi
Abdulkareem Ghassan Alsultan
H.V. Lee
Mohd Sufri Mastuli
Nasar Mansir
Fahad A. Alharti
Abdulaziz Alghamdi
Yap, Taufiq Yun Hin
author_facet Nurul Asikin Mijan
J.M. Ooi
Abdulkareem Ghassan Alsultan
H.V. Lee
Mohd Sufri Mastuli
Nasar Mansir
Fahad A. Alharti
Abdulaziz Alghamdi
Yap, Taufiq Yun Hin
author_sort Nurul Asikin Mijan
title Free-H2 deoxygenation of Jatropha curcas oil into cleaner diesel-grade biofuel over coconut residue-derived activated carbon catalyst
title_short Free-H2 deoxygenation of Jatropha curcas oil into cleaner diesel-grade biofuel over coconut residue-derived activated carbon catalyst
title_full Free-H2 deoxygenation of Jatropha curcas oil into cleaner diesel-grade biofuel over coconut residue-derived activated carbon catalyst
title_fullStr Free-H2 deoxygenation of Jatropha curcas oil into cleaner diesel-grade biofuel over coconut residue-derived activated carbon catalyst
title_full_unstemmed Free-H2 deoxygenation of Jatropha curcas oil into cleaner diesel-grade biofuel over coconut residue-derived activated carbon catalyst
title_sort free-h2 deoxygenation of jatropha curcas oil into cleaner diesel-grade biofuel over coconut residue-derived activated carbon catalyst
publisher Elsevier
publishDate 2019
url https://eprints.ums.edu.my/id/eprint/25486/1/Free-H2%20deoxygenation%20of%20Jatropha%20curcas%20oil%20into%20cleaner%20diesel-grade%20biofuel%20over%20coconut%20residue-derived%20activated%20carbon%20catalyst.pdf
https://eprints.ums.edu.my/id/eprint/25486/
https://doi.org/10.1016/j.jclepro.2019.119381
_version_ 1760230374420512768
score 13.211869

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