Heavy oil hydroprocessing: effect of nanostructured morphologies of MoS2 as catalyst

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Five morphologically different nanostructured molybdenum disulfide (MoS2) samples were prepared, namely: nanoparticles, nanorods, nanoplatelets, nanoflowers and porous. These structures were characterized using X-ray diffraction and scanning electron microscope analyses. Afterwards, the up gradation of heavy oil was carried out in the presence of aforementioned nanostructures of molybdenum disulfide as catalysts. The results of catalytic and non-catalytic hydro-processing were compared. It was found that catalytic hydro-processing, due to lower sulfur contents, led to a more efficient and environmental friendly procedure as compared to non-catalytic hydro-processing. Furthermore, aromaticity, aromaticity condensation and branchiness index were also determined. In addition, nuclear magnetic resonance analyses were presented for the product of catalytic hydroprocessing. The nanoparticle morphology of molybdenum disulfide, catalyst, exhibited better result, due to its higher surface area, as compared to other morphologies of molybdenum disulfide catalysts, i.e., nanorods, nanoplatelets nanoflowers and porous structures.
Publisher
SPRINGER
Issue Date
2015-04
Language
English
Article Type
Article
Keywords

MOLYBDENUM SULFIDE CATALYSTS; ELECTROCHEMICAL/CHEMICAL SYNTHESIS; NANOCRYSTALLINE MOS2; ASPHALTENE; NANOWIRES; AQUATHERMOLYSIS; NANOCATALYSTS; EVOLUTION; KINETICS; CRACKING

Citation

REACTION KINETICS MECHANISMS AND CATALYSIS, v.114, no.2, pp.473 - 487

ISSN
1878-5190
DOI
10.1007/s11144-014-0822-z
URI
http://hdl.handle.net/10203/198227
Appears in Collection
CBE-Journal Papers(저널논문)
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