Production of renewable diesel from Jatropha curcas oil via pyrolytic-deoxygenation over various multi-wall carbon nanotube-based catalysts

[Display omitted] •Development of NiO–Fe2O3 and NiO–ZnO supported MWCNT catalysts•Weak + medium acid acidic sites main factor affecting deoxygenation activity•NiO–Fe2O3/MWCNT catalyst yielded 89 % hydrocarbon and 79 % n-(C15+C17) selectivity•Product selective toward alkanes species.•Nanosize carbon...

Full description

Saved in:
Bibliographic Details
Published in:Process safety and environmental protection 2020-10, Vol.142, p.336-349
Main Authors: Asikin-Mijan, N., Rosman, N.A, AbdulKareem-Alsultan, G., Mastuli, M.S., Lee, H.V., Nabihah-Fauzi, N., Lokman, I.M, Alharthi, Fahad A., Alghamdi, Abdulaziz Ali, Aisyahi, Amjad Abdullah, Taufiq-Yap, Y.H.
Format: Article
Language:English
Subjects:
Adaptability
Calorific value
Carbon
Catalysts
Clean energy
Deoxygenation
Diesel
Ferric oxide
Flash point
Hexadecane
Iron
Jatropha curcas
Multi wall carbon nanotubes
Multiwall carbon nanotube
Nanostructure
Nickel
Nickel oxides
Oxygen content
Properties (attributes)
Selectivity
Soil conditions
Tropical environment
Tropical environments
Zinc oxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Development of NiO–Fe2O3 and NiO–ZnO supported MWCNT catalysts•Weak + medium acid acidic sites main factor affecting deoxygenation activity•NiO–Fe2O3/MWCNT catalyst yielded 89 % hydrocarbon and 79 % n-(C15+C17) selectivity•Product selective toward alkanes species.•Nanosize carbon support promote better diesel quality Jatropha curcas is a highly toxic plant that produces seed containing viscous oil with productivity (2 ton/ha), it grows in tropical and sub-tropical regions and offer greater adaptability to a wide range of climatic and soil conditions. Its oils have been noted as an important alternative to produce green diesel via deoxygenation reaction. This study, deoxygenation of jatropha curcas oil (JCO) was carried out over NiO–Fe2O3 and NiO–ZnO catalysts that supported onto multi-walled carbon nanotube (MWCNT). It had found that high Fe and Zn dosages were ineffective in deoxygenation and greatest activity was observed on NiO(20) Fe2O3(5)/MWCNT catalyst. Structure-activity correlations revealed that low metal loading, large density of weak + medium acidic sites and strong basic sites play key role in enhancing the catalytic activities and n-(C15+C17) selectivity. Comparing carbon nanostructures and carbon micron size supported NiO-Fe2O3 revealed that green diesel obtained from NiO–Fe2O3/MWCNT catalysed deoxygenation had the highest heating value and the lowest amounts of oxygen content. Thereby, it confirmed the importance of carbon nanostructure as the catalyst support in improving the diesel quality. Considering the high reusability of NiO-Fe2O3/MWCNT (6 consecutive runs) and superior green diesel properties (flash point, cloud properties and cetane index) demonstrated the NiO–Fe2O3/MWCNT catalyst offers great option in producing excellent properties of green diesel for energy sector.
ISSN:0957-5820
1744-3598
DOI:10.1016/j.psep.2020.06.034